Organization
School of Environment and Society Professor
Title
Professor
External link
KASAI YASUKO
Papers
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The SPARC Water Vapor Assessment II: assessment of satellite measurements of upper tropospheric humidity
William G. Read, Gabriele Stiller, Stefan Lossow, Michael Kiefer, Farahnaz Khosrawi, Dale Hurst, Holger Vomel, Karen Rosenlof, Bianca M. Dinelli, Piera Raspollini, Gerald E. Nedoluha, John C. Gille, Yasuko Kasai, Patrick Eriksson, Christopher E. Sioris, Kaley A. Walker, Katja Weigel, John P. Burrows, Alexei Rozanov
ATMOSPHERIC MEASUREMENT TECHNIQUES 15 ( 11 ) 3377 - 3400 2022.6
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Landing Method for Simple and Small Mars Lander Using Metal Foam
Yamaguchi Shun, Sugawara Yoshiki, Nakasuka Shinichi, Kasai Yasuko, Takeda Masakazu, Sakama Sayako
AEROSPACE TECHNOLOGY JAPAN, THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES 21 40 - 47 2022
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Takayoshi Yamada, Philippe Baron, Lori Neary, Toshiyuki Nishibori, Richard Larsson, Takeshi Kuroda, Frank Daerden, Yasuko Kasai
IEEE Transactions on Geoscience and Remote Sensing 60 1 - 11 2022
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Compact 480-GHz Radiometer Calibration Unit With Specular Reflection Absorber for Atmospheric Remote Sensor On-Board Microsatellite
Maho Nakagawa, Yuki Uchiyama, Takayoshi Yamada, Toshiyuki Nishibori, Satoshi Ochiai, Maya Mizuno, Akihisa Uematsu, Shigeru Sato, Yukio Nakano, Yasuko Kasai
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY 11 ( 5 ) 486 - 494 2021.9
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Integration of GOCI and AHI Yonsei aerosol optical depth products during the 2016 KORUS-AQ and 2018 EMeRGe campaigns
Hyunkwang Lim, Sujung Go, Jhoon Kim, Myungje Choi, Seoyoung Lee, Chang-Keun Song, Yasuko Kasai
ATMOSPHERIC MEASUREMENT TECHNIQUES 14 ( 6 ) 4575 - 4592 2021.6
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Model simulations of chemical effects of sprites in relation with observed HO2 enhancements over sprite-producing thunderstorms
Holger Winkler, Takayoshi Yamada, Yasuko Kasai, Uwe Berger, Justus Notholt
ATMOSPHERIC CHEMISTRY AND PHYSICS 21 ( 10 ) 7579 - 7596 2021.5
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The Diurnal Variation in Stratospheric Ozone from MACC Reanalysis, ERA-Interim, WACCM, and Earth Observation Data: Characteristics and Intercomparison
Ansgar Schanz, Klemens Hocke, Niklaus Kampfer, Simon Chabrillat, Antje Inness, Mathias Palm, Justus Notholt, Ian Boyd, Alan Parrish, Yasuko Kasai
ATMOSPHERE 12 ( 5 ) 2021.5
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Overview and update of the SPARC Data Initiative: comparison of stratospheric composition measurements from satellite limb sounders
Michaela I. Hegglin, Susann Tegtmeier, John Anderson, Adam E. Bourassa, Samuel Brohede, Doug Degenstein, Lucien Froidevaux, Bernd Funke, John Gille, Yasuko Kasai, Erkki T. Kyrola, Jerry Lumpe, Donal Murtagh, Jessica L. Neu, Kristell Perot, Ellis E. Remsberg, Alexei Rozanov, Matthew Toohey, Joachim Urban, Thomas von Clarmann, Kaley A. Walker, Hsiang-Jui Wang, Carlo Arosio, Robert Damadeo, Ryan A. Fuller, Gretchen Lingenfelser, Christopher McLinden, Diane Pendlebury, Chris Roth, Niall J. Ryan, Christopher Sioris, Lesley Smith, Katja Weigel
EARTH SYSTEM SCIENCE DATA 13 ( 5 ) 1855 - 1903 2021.5
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Validation of SMILES HCl profiles over a wide range from the stratosphere to the lower thermosphere
Seidai Nara, Tomohiro O. Sato, Takayoshi Yamada, Tamaki Fujinawa, Kota Kuribayashi, Takeshi Manabe, Lucien Froidevaux, Nathaniel J. Livesey, Kaley A. Walker, Jian Xu, Franz Schreier, Yvan J. Orsolini, Varavut Limpasuvan, Nario Kuno, Yasuko Kasai
ATMOSPHERIC MEASUREMENT TECHNIQUES 13 ( 12 ) 6837 - 6852 2020.12
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Detection and attribution of wildfire pollution in the Arctic and northern midlatitudes using a network of Fourier-transform infrared spectrometers and GEOS-Chem
Erik Lutsch, Kimberly Strong, Dylan B. A. Jones, Thomas Blumenstock, Stephanie Conway, Jenny A. Fisher, James W. Hannigan, Frank Hase, Yasuko Kasai, Emmanuel Mahieu, Maria Makarova, Isamu Morino, Tomoo Nagahama, Justus Notholt, Ivan Ortega, Mathias Palm, Anatoly Poberovskii, Ralf Sussmann, Thorsten Warneke
ATMOSPHERIC CHEMISTRY AND PHYSICS 20 ( 21 ) 12813 - 12851 2020.11
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Overview: Estimating and reporting uncertainties in remotely sensed atmospheric composition and temperature
Thomas von Clarmann, Douglas A. Degenstein, Nathaniel J. Livesey, Stefan Bender, Amy Braverman, Andre Butz, Steven Compernolle, Robert Damadeo, Seth Dueck, Patrick Eriksson, Bernd Funke, Margaret C. Johnson, Yasuko Kasai, Arno Keppens, Anne Kleinert, Natalya A. Kramarova, Alexandra Laeng, Bavo Langerock, Vivienne H. Payne, Alexei Rozanov, Tomohiro O. Sato, Matthias Schneider, Patrick Sheese, Viktoria Sofieva, Gabriele P. Stiller, Christian von Savigny, Daniel Zawada
ATMOSPHERIC MEASUREMENT TECHNIQUES 13 ( 8 ) 4393 - 4436 2020.8
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Validation of acetonitrile (CH3CN) measurements in the stratosphere and lower mesosphere from the SMILES instrument on the International Space Station
Tamaki Fujinawa, Tomohiro O. Sato, Takayoshi Yamada, Seidai Nara, Yuki Uchiyama, Kodai Takahashi, Naohiro Yoshida, Yasuko Kasai
ATMOSPHERIC MEASUREMENT TECHNIQUES 13 ( 4 ) 2119 - 2129 2020.4
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HO2 Generation Above Sprite-Producing Thunderstorms Derived from Low-Noise SMILES Observation Spectra
T. Yamada, T. O. Sato, T. Adachi, H. Winkler, K. Kuribayashi, R. Larsson, N. Yoshida, Y. Takahashi, M. Sato, A. B. Chen, R. R. Hsu, Y. Nakano, T. Fujinawa, S. Nara, Y. Uchiyama, Y. Kasai
GEOPHYSICAL RESEARCH LETTERS 47 ( 3 ) 2020.2
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New Era of Air Quality Monitoring from Space: Geostationary Environment Monitoring Spectrometer (GEMS)
Jhoon Kim, Ukkyo Jeong, Myoung-Hwan Ahn, Jae H. Kim, Rokjin J. Park, Hanlim Lee, Chul Han Song, Yong-Sang Choi, Kwon-Ho Lee, Jung-Moon Yoo, Myeong-Jae Jeong, Seon Ki Park, Kwang-Mog Lee, Chang-Keun Song, Sang-Woo Kim, Young Joon Kim, Si-Wan Kim, Mijin Kim, Sujung Go, Xiong Liu, Kelly Chance, Christopher Chan Miller, Jay Al-Saadi, Ben Veihelmann, Pawan K. Bhartia, Omar Torres, Gonzalo Gonzalez Abad, David P. Haffner, Dai Ho Ko, Seung Hoon Lee, Jung-Hun Woo, Heesung Chong, Sang Seo Park, Dennis Nicks, Won Jun Choi, Kyung-Jung Moon, Ara Cho, Jongmin Yoon, Sang-kyun Kim, Hyunkee Hong, Kyunghwa Lee, Hana Lee, Seoyoung Lee, Myungje Choi, Pepijn Veefkind, Pieternel F. Levelt, David P. Edwards, Mina Kang, Mijin Eo, Juseon Bak, Kanghyun Baek, Hyeong-Ahn Kwon, Jiwon Yang, Junsung Park, Kyung Man Han, Bo-Ram Kim, Hee-Woo Shin, Haklim Choi, Ebony Lee, Jihyo Chong, Yesol Cha, Ja-Ho Koo, Hitoshi Irie, Sachiko Hayashida, Yasko Kasai, Yugo Kanaya, Cheng Liu, Jintai Lin, James H. Crawford, Gregory R. Carmichael, Michael J. Newchurch, Barry L. Lefer, Jay R. Herman, Robert J. Swap, Alexis K. H. Lau, Thomas P. Kurosu, Glen Jaross, Berit Ahlers, Marcel Dobber, C. Thomas McElroy, Yunsoo Choi
BULLETIN OF THE AMERICAN METEOROLOGICAL SOCIETY 101 ( 1 ) E1 - E22 2020.1
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笠井 康子, 山田 崇貴, JUICE/SWI日本チーム
日本赤外線学会誌 = Journal of the Japan Society of Infrared Science and Technolog / 日本赤外線学会 編 29 ( 1 ) 37 - 42 2019.8
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Concept of small satellite UV/visible imaging spectrometer optimized for tropospheric NO2 measurements in air quality monitoring
Tamaki Fujinawa, Katsuyuki Noguchi, Akihiko Kuze, Andreas Richter, John P. Burrows, Andreas C. Meier, Tomohiro O. Sato, Takeshi Kuroda, Naohiro Yoshida, Yasko Kasai
ACTA ASTRONAUTICA 160 421 - 432 2019.7
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笠井 康子, 山田 崇貴
光学 = Japanese journal of optics : publication of the Optical Society of Japan 48 ( 5 ) 187 - 192 2019.5
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The SPARC water vapour assessment II: profile-to-profile comparisons of stratospheric and lower mesospheric water vapour data sets obtained from satellites
Stefan Lossow, Farahnaz Khosrawi, Michael Kiefer, Kaley A. Walker, Jean-Loup Bertaux, Laurent Blanot, James M. Russell, Ellis E. Remsberg, John C. Gille, Takafumi Sugita, Christopher E. Sioris, Bianca M. Dinelli, Enzo Papandrea, Piera Raspollini, Maya Garcia-Comas, Gabriele P. Stiller, Thomas von Clarmann, Anu Dudhia, William G. Read, Gerald E. Nedoluha, Robert P. Damadeo, Joseph M. Zawodny, Katja Weigel, Alexei Rozanov, Faiza Azam, Klaus Bramstedt, Stefan Noel, John P. Burrows, Hideo Sagawa, Yasuko Kasai, Joachim Urban, Patrick Eriksson, Donal P. Murtagh, Mark E. Hervig, Charlotta Hogberg, Dale F. Hurst, Karen H. Rosenlof
ATMOSPHERIC MEASUREMENT TECHNIQUES 12 ( 5 ) 2693 - 2732 2019.5
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Mars submillimeter sensor on microsatellite: sensor feasibility study
Richard Larsson, Yasuko Kasai, Takeshi Kuroda, Shigeru Sato, Takayoshi Yamada, Hiroyuki Maezawa, Yutaka Hasegawa, Toshiyuki Nishibori, Shinichi Nakasuka, Paul Hartogh
GEOSCIENTIFIC INSTRUMENTATION METHODS AND DATA SYSTEMS 7 ( 4 ) 331 - 341 2018.12
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The SPARC water vapour assessment II: comparison of stratospheric and lower mesospheric water vapour time series observed from satellites
Farahnaz Khosrawi, Stefan Lossow, Gabriele P. Stiller, Karen H. Rosenlof, Joachim Urban, John P. Burrows, Robert P. Damadeo, Patrick Eriksson, Maya Garcia-Comas, John C. Gille, Yasuko Kasai, Michael Kiefer, Gerald E. Nedoluha, Stefan Noel, Piera Raspollini, William G. Read, Alexei Rozanov, Christopher E. Sioris, Kaley A. Walker, Katja Weigel
ATMOSPHERIC MEASUREMENT TECHNIQUES 11 ( 7 ) 4435 - 4463 2018.7
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AHI/Himawari-8 Yonsei Aerosol Retrieval (YAER): Algorithm, Validation and Merged Products.
Hyun-Kwang Lim, Myungje Choi, Jhoon Kim, Yasuko Kasai, Pak Wai Chan
Remote Sensing 10 ( 5 ) 699 - 699 2018.5
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Integral design method for simple and small Mars lander system using membrane aeroshell
Ryo Sakagami, Ryohei Takahashi, Akifumi Wachi, Yuki Koshiro, Hiroyuki Maezawa, Yasko Kasai, Shinichi Nakasuka
ACTA ASTRONAUTICA 144 103 - 118 2018.3
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Vertical profile of tropospheric ozone derived from synergetic retrieval using three different wavelength ranges, UV, IR, and microwave: sensitivity study for satellite observation
Tomohiro O. Sato, Takao M. Sato, Hideo Sagawa, Katsuyuki Noguchi, Naoko Saitoh, Hitoshi Irie, Kazuyuki Kita, Mona E. Mahani, Koji Zettsu, Ryoichi Imasu, Sachiko Hayashida, Yasuko Kasai
ATMOSPHERIC MEASUREMENT TECHNIQUES 11 ( 3 ) 1653 - 1668 2018.3
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The Conceptual Design of a Novel, Small and Simple Mars Lander
Ryohei Takahashi, Ryo Sakagami, Akifumi Wachi, Yasko Kasai, Shinichi Nakasuka
2018 IEEE AEROSPACE CONFERENCE 2018
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Diurnal variation of oxygen isotopic enrichment in asymmetric-18 ozone observed by the SMILES from space
T. O. Sato, K. Kuribayashi, N. Yoshida, Y. Kasai
GEOPHYSICAL RESEARCH LETTERS 44 ( 12 ) 6399 - 6406 2017.6
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Optimal retrieval method to estimate ozone vertical profile in the mesosphere and lower thermosphere (MLT) region from submillimeter-wave limb emission spectra
K. Kuribayashi, N. Yoshida, H. Jin, Y. J. Orsolini, Y. Kasai
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 192 42 - 52 2017.5
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Martian magnetism with orbiting sub-millimeter sensor: simulated retrieval system
Richard Larsson, Mathias Milz, Patrick Eriksson, Jana Mendrok, Yasuko Kasai, Stefan Alexander Buehler, Catherine Dieval, David Brain, Paul Hartogh
GEOSCIENTIFIC INSTRUMENTATION METHODS AND DATA SYSTEMS 6 ( 1 ) 27 - 37 2017.1
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Planetary plasma and atmospheres explored by space missions in Japan: Hisaki, Akatsuki, and beyond
Y. Kasaba, T. Imamura, F. Tsuchiya, N. Terada, Y. Miyoshi, Y. Kasai, Y. Saito
FRONTIERS IN THEORETICAL AND APPLIED PHYSICS/UAE 2017 (FTAPS 2017) 869 2017
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Evaluating the Diurnal Cycle of Upper-Tropospheric Ice Clouds in Climate Models Using SMILES Observations
Jonathan H. Jiang, Hui Su, Chengxing Zhai, T. Janice Shen, Tongwen Wu, Jie Zhang, Jason N. S. Cole, Knut von Salzen, Leo J. Donner, Charles Seman, Anthony Del Genio, Larissa S. Nazarenko, Jean-Louis Dufresne, Masahiro Watanabe, Cyril Morcrette, Tsuyoshi Koshiro, Hideaki Kawai, Andrew Gettelman, Luis Millan, William G. Read, Nathaniel J. Livesey, Yasko Kasai, Masato Shiotani
JOURNAL OF THE ATMOSPHERIC SCIENCES 72 ( 3 ) 1022 - 1044 2015.3
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Stratospheric and mesospheric HO2 observations from the Aura Microwave Limb Sounder
L. Millan, S. Wang, N. Livesey, D. Kinnison, H. Sagawa, Y. Kasai
ATMOSPHERIC CHEMISTRY AND PHYSICS 15 ( 5 ) 2889 - 2902 2015
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Overview and sample applications of SMILES and Odin-SMR retrievals of upper tropospheric humidity and cloud ice mass
P. Eriksson, B. Rydberg, H. Sagawa, M. S. Johnston, Y. Kasai
ATMOSPHERIC CHEMISTRY AND PHYSICS 14 ( 23 ) 12613 - 12629 2014
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Vertical profile of delta(OOO)-O-18 from the middle stratosphere to lower mesosphere from SMILES spectra
T. O. Sato, H. Sagawa, N. Yoshida, Y. Kasai
ATMOSPHERIC MEASUREMENT TECHNIQUES 7 ( 4 ) 941 - 958 2014
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Direct estimation of the rate constant of the reaction ClO + HO2 -> HOCl + O-2 from SMILES atmospheric observations
K. Kuribayashi, H. Sagawa, R. Lehmann, T. O. Sato, Y. Kasai
ATMOSPHERIC CHEMISTRY AND PHYSICS 14 ( 1 ) 255 - 266 2014
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Past changes in the vertical distribution of ozone - Part 1: Measurement techniques, uncertainties and availability
B. Hassler, I. Petropavlovskikh, J. Staehelin, T. August, P. K. Bhartia, C. Clerbaux, D. Degenstein, M. De Maziere, B. M. Dinelli, A. Dudhia, G. Dufour, S. M. Frith, L. Froidevaux, S. Godin-Beekmann, J. Granville, N. R. P. Harris, K. Hoppel, D. Hubert, Y. Kasai, M. J. Kurylo, E. Kyroelae, J. -C. Lambert, P. F. Levelt, C. T. McElroy, R. D. McPeters, R. Munro, H. Nakajima, A. Parrish, P. Raspollini, E. E. Remsberg, K. H. Rosenlof, A. Rozanov, T. Sano, Y. Sasano, M. Shiotani, H. G. J. Smit, G. Stiller, J. Tamminen, D. W. Tarasick, J. Urban, R. J. van der A, J. P. Veefkind, C. Vigouroux, T. von Clarmann, C. von Savigny, K. A. Walker, M. Weber, J. Wild, J. M. Zawodny
ATMOSPHERIC MEASUREMENT TECHNIQUES 7 ( 5 ) 1395 - 1427 2014
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The use of SMILES data to study ozone loss in the Arctic winter 2009/2010 and comparison with Odin/SMR data using assimilation techniques
K. Sagi, D. Murtagh, J. Urban, H. Sagawa, Y. Kasai
ATMOSPHERIC CHEMISTRY AND PHYSICS 14 ( 23 ) 12855 - 12869 2014
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Validation of MIPAS IMK/IAA V5R_O3_224 ozone profiles
A. Laeng, U. Grabowski, T. von Clarmann, G. Stiller, N. Glatthor, M. Hoepfner, S. Kellmann, M. Kiefer, A. Linden, S. Lossow, V. Sofieva, I. Petropavlovskikh, D. Hubert, T. Bathgate, P. Bernath, C. D. Boone, C. Clerbaux, P. Coheur, R. Damadeo, D. Degenstein, S. Frith, L. Froidevaux, J. Gille, K. Hoppel, M. McHugh, Y. Kasai, J. Lumpe, N. Rahpoe, G. Toon, T. Sano, M. Suzuki, J. Tamminen, J. Urban, K. Walker, M. Weber, J. Zawodny
ATMOSPHERIC MEASUREMENT TECHNIQUES 7 ( 11 ) 3971 - 3987 2014
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SPARC Data Initiative: A comparison of ozone climatologies from international satellite limb sounders
S. Tegtmeier, M. I. Hegglin, J. Anderson, A. Bourassa, S. Brohede, D. Degenstein, L. Froidevaux, R. Fuller, B. Funke, J. Gille, A. Jones, Y. Kasai, K. Krueger, E. Kyrola, G. Lingenfelser, J. Lumpe, B. Nardi, J. Neu, D. Pendlebury, E. Remsberg, A. Rozanov, L. Smith, M. Toohey, J. Urban, T. von Clarmann, K. A. Walker, R. H. J. Wang
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 118 ( 21 ) 12229 - 12247 2013.11
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菊池 健一, 落合 啓, 笠井 康子
電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 113 ( 232 ) 13 - 16 2013.10
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Characterizing sampling biases in the trace gas climatologies of the SPARC Data Initiative
M. Toohey, M. I. Hegglin, S. Tegtmeier, J. Anderson, J. A. Anel, A. Bourassa, S. Brohede, D. Degenstein, L. Froidevaux, R. Fuller, B. Funke, J. Gille, A. Jones, Y. Kasai, K. Krueger, E. Kyrola, J. L. Neu, A. Rozanov, L. Smith, J. Urban, T. von Clarmann, K. A. Walker, R. H. J. Wang
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 118 ( 20 ) 11847 - 11862 2013.10
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A method for remote sensing of weak planetary magnetic fields: Simulated application to Mars
Richard Larsson, Robin Ramstad, Jana Mendrok, Stefan Alexander Buehler, Yasuko Kasai
GEOPHYSICAL RESEARCH LETTERS 40 ( 19 ) 5014 - 5018 2013.10
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SMILES zonal and diurnal variation climatology of stratospheric and mesospheric trace gasses: O-3, HCl, HNO3, ClO, BrO, HOCl, HO2, and temperature
Daniel Kreyling, Hideo Sagawa, Ingo Wohltmann, Ralph Lehmann, Yasuko Kasai
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 118 ( 20 ) 11888 - 11903 2013.10
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SMILES ice cloud products
L. Millan, W. Read, Y. Kasai, A. Lambert, N. Livesey, J. Mendrok, H. Sagawa, T. Sano, M. Shiotani, D. L. Wu
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 118 ( 12 ) 6468 - 6477 2013.6
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Observation of horizontal winds in the middle-atmosphere between 30 degrees S and 55 degrees N during the northern winter 2009-2010
P. Baron, D. P. Murtagh, J. Urban, H. Sagawa, S. Ochiai, Y. Kasai, K. Kikuchi, F. Khosrawi, H. Kornich, S. Mizobuchi, K. Sagi, M. Yasui
ATMOSPHERIC CHEMISTRY AND PHYSICS 13 ( 12 ) 6049 - 6064 2013
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Comparison of SMILES ClO profiles with satellite, balloon-borne and ground-based measurements
H. Sagawa, T. O. Sato, P. Baron, E. Dupuy, N. Livesey, J. Urban, T. von Clarmann, A. de lange, G. Wetzel, B. J. Connor, A. Kagawa, D. Murtagh, Y. Kasai
ATMOSPHERIC MEASUREMENT TECHNIQUES 6 ( 12 ) 3325 - 3347 2013
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Diurnal variation of stratospheric and lower mesospheric HOCl, ClO and HO2 at the equator: comparison of 1-D model calculations with measurements by satellite instruments
M. Khosravi, P. Baron, J. Urban, L. Froidevaux, A. I. Jonsson, Y. Kasai, K. Kuribayashi, C. Mitsuda, D. P. Murtagh, H. Sagawa, M. L. Santee, T. O. Sato, M. Shiotani, M. Suzuki, T. von Clarmann, K. A. Walker, S. Wang
ATMOSPHERIC CHEMISTRY AND PHYSICS 13 ( 15 ) 7587 - 7606 2013
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HCl and ClO profiles inside the Antarctic vortex as observed by SMILES in November 2009: comparisons with MLS and ACE-FTS instruments
T. Sugita, Y. Kasai, Y. Terao, S. Hayashida, G. L. Manney, W. H. Daffer, H. Sagawa, M. Suzuki, M. Shiotani, K. A. Walker, C. D. Boone, P. F. Bernath
ATMOSPHERIC MEASUREMENT TECHNIQUES 6 ( 11 ) 3099 - 3113 2013
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Stratospheric BrO abundance measured by a balloon-borne submillimeterwave radiometer
R. A. Stachnik, L. Millan, R. Jarnot, R. Monroe, C. McLinden, S. Kuehl, J. Pukite, M. Shiotani, M. Suzuki, Y. Kasai, F. Goutail, J. P. Pommereau, M. Dorf, K. Pfeilsticker
ATMOSPHERIC CHEMISTRY AND PHYSICS 13 ( 6 ) 3307 - 3319 2013
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Validation of stratospheric and mesospheric ozone observed by SMILES from International Space Station
Y. Kasai, H. Sagawa, D. Kreyling, E. Dupuy, P. Baron, J. Mendrok, K. Suzuki, T. O. Sato, T. Nishibori, S. Mizobuchi, K. Kikuchi, T. Manabe, H. Ozeki, T. Sugita, M. Fujiwara, Y. Irimajiri, K. A. Walker, P. F. Bernath, C. Boone, G. Stiller, T. von Clarmann, J. Orphal, J. Urban, D. Murtagh, E. J. Llewellyn, D. Degenstein, A. E. Bourassa, N. D. Lloyd, L. Froidevaux, M. Birk, G. Wagner, F. Schreier, J. Xu, P. Vogt, T. Trautmann, M. Yasui
ATMOSPHERIC MEASUREMENT TECHNIQUES 6 ( 9 ) 2311 - 2338 2013
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Quantifying the relationship between the measurement precision and specifications of a UV/visible sensor on a geostationary satellite
Hitoshi Irie, Hironobu Iwabuchi, Katsuyuki Noguchi, Yasuko Kasai, Kazuyuki Kita, Hajime Akimoto
ADVANCES IN SPACE RESEARCH 49 ( 12 ) 1743 - 1749 2012.6
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Evaluation of isotopic fractionation of oxygen ions escaping from terrestrial thermosphere
Yasutaka Hiraki, Akinori Yamada, Yasuko Kasai, Takamasa Seta, Minoru Ozima
GEOCHIMICA ET COSMOCHIMICA ACTA 84 525 - 533 2012.5
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Overview of the Martian atmospheric submillimetre sounder FIRE
Yasuko Kasai, Hideo Sagawa, Takeshi Kuroda, Takeshi Manabe, Satoshi Ochiai, Ken-ichi Kikuchi, Toshiyuki Nishibori, Philippe Baron, Jana Mendrok, Paul Hartogh, Donal Murtagh, Joachim Urban, Fredrik von Scheele, Urban Frisk
PLANETARY AND SPACE SCIENCE 63-64 62 - 82 2012.4
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HCl/Cly ratios just before the breakup of the Antarctic vortex as observed by SMILES/MLS/ACE-FTS
T. Sugita, Y. Kasai, Y. Terao, S. Hayashida, G. L. Manney, W. H. Daffer, H. Sagawa, M. Suzuki, M. Shiotani
REMOTE SENSING OF THE ATMOSPHERE, CLOUDS, AND PRECIPITATION IV 8523 2012
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Strato-mesospheric ClO observations by SMILES: error analysis and diurnal variation
T. O. Sato, H. Sagawa, D. Kreyling, T. Manabe, S. Ochiai, K. Kikuchi, P. Baron, J. Mendrok, J. Urban, D. Murtagh, M. Yasui, Y. Kasai
ATMOSPHERIC MEASUREMENT TECHNIQUES 5 ( 11 ) 2809 - 2825 2012
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The Level 2 research product algorithms for the Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES)
P. Baron, J. Urban, H. Sagawa, J. Moller, D. P. Murtagh, J. Mendrok, E. Dupuy, T. O. Sato, S. Ochiai, K. Suzuki, T. Manabe, T. Nishibori, K. Kikuchi, R. Sato, M. Takayanagi, Y. Murayama, M. Shiotani, Y. Kasai
ATMOSPHERIC MEASUREMENT TECHNIQUES 4 ( 10 ) 2105 - 2124 2011
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The H2O-O-2 water vapour complex in the Earth's atmosphere
Y. Kasai, E. Dupuy, R. Saito, K. Hashimoto, A. Sabu, S. Kondo, Y. Sumiyoshi, Y. Endo
ATMOSPHERIC CHEMISTRY AND PHYSICS 11 ( 16 ) 8607 - 8612 2011
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Overview and early results of the Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES)
Ken-ichi Kikuchi, Toshiyuki Nishibori, Satoshi Ochiai, Hiroyuki Ozeki, Yoshihisa Irimajiri, Yasuko Kasai, Makoto Koike, Takeshi Manabe, Kazuo Mizukoshi, Yasuhiro Murayama, Tomoo Nagahama, Takuki Sano, Ryota Sato, Masumichi Seta, Chikako Takahashi, Masahiro Takayanagi, Harunobu Masuko, Junji Inatani, Makoto Suzuki, Masato Shiotani
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 115 2010.12
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Large MIF on O-2 photo-dissociation and its relevance to Earth wind
Akinori Yamada, Shinkoh Nanbu, Yasuko Kasai, Minoru Ozima
GEOCHIMICA ET COSMOCHIMICA ACTA 74 ( 12 ) A1167 - A1167 2010.6
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Measurement of the pressure broadening coefficient of the 625 GHz transition of H2O2 in the sub-millimeter-wave region
T. O. Sato, A. Mizoguchi, J. Mendrok, H. Kanamori, Y. Kasai
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 111 ( 6 ) 821 - 825 2010.4
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Pressure broadening coefficients of H2O induced by CO2 for Venus atmosphere
Hideo Sagawa, Jana Mendrok, Takamasa Seta, Hiromichi Hoshina, Philippe Baron, Kodai Suzuki, Iwao Hosako, Chiko Otani, Paul Hartogh, Yasuko Kasai
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 110 ( 18 ) 2027 - 2036 2009.12
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MASS-INDEPENDENT OXYGEN ISOTOPE FRACTIONATION IN EARTH WIND: FIRST PRINCIPLE CALCULATION
Akinori Yamada, Shinkoh Nanbu, Yasuko Kasai, Minoru Ozima
METEORITICS & PLANETARY SCIENCE 44 A223 - A223 2009.7
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Validation of ozone measurements from the Atmospheric Chemistry Experiment (ACE)
E. Dupuy, K. A. Walker, J. Kar, C. D. Boone, C. T. McElroy, P. F. Bernath, J. R. Drummond, R. Skelton, S. D. McLeod, R. C. Hughes, C. R. Nowlan, D. G. Dufour, J. Zou, F. Nichitiu, K. Strong, P. Baron, R. M. Bevilacqua, T. Blumenstock, G. E. Bodeker, T. Borsdorff, A. E. Bourassa, H. Bovensmann, I. S. Boyd, A. Bracher, C. Brogniez, J. P. Burrows, V. Catoire, S. Ceccherini, S. Chabrillat, T. Christensen, M. T. Coffey, U. Cortesi, J. Davies, C. De Clercq, D. A. Degenstein, M. De Maziere, P. Demoulin, J. Dodion, B. Firanski, H. Fischer, G. Forbes, L. Froidevaux, D. Fussen, P. Gerard, S. Godin-Beekmann, F. Goutail, J. Granville, D. Griffith, C. S. Haley, J. W. Hannigan, M. Hoepfner, J. J. Jin, A. Jones, N. B. Jones, K. Jucks, A. Kagawa, Y. Kasai, T. E. Kerzenmacher, A. Kleinboehl, A. R. Klekociuk, I. Kramer, H. Kuellmann, J. Kuttippurath, E. Kyroelae, J. -C. Lambert, N. J. Livesey, E. J. Llewellyn, N. D. Lloyd, E. Mahieu, G. L. Manney, B. T. Marshall, J. C. McConnell, M. P. McCormick, I. S. McDermid, M. McHugh, C. A. McLinden, J. Mellqvist, K. Mizutani, Y. Murayama, D. P. Murtagh, H. Oelhaf, A. Parrish, S. V. Petelina, C. Piccolo, J. -P. Pommereau, C. E. Randall, C. Robert, C. Roth, M. Schneider, C. Senten, T. Steck, A. Strandberg, K. B. Strawbridge, R. Sussmann, D. P. J. Swart, D. W. Tarasick, J. R. Taylor, C. Tetard, L. W. Thomason, A. M. Thompson, M. B. Tully, J. Urban, F. Vanhellemont, C. Vigouroux, T. von Clarmann, P. von der Gathen, C. von Savigny, J. W. Waters, J. C. Witte, M. Wolff, J. M. Zawodny
ATMOSPHERIC CHEMISTRY AND PHYSICS 9 ( 2 ) 287 - 343 2009
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HO2 measurements in the stratosphere and the mesosphere from the sub-millimetre limb sounder Odin/SMR
P. Baron, E. Dupuy, J. Urban, D. P. Murtagh, P. Eriksson, Y. Kasai
INTERNATIONAL JOURNAL OF REMOTE SENSING 30 ( 15-16 ) 4195 - 4208 2009
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Precise measurement of pressure broadening parameters for water vapor with a terahertz time-domain spectrometer
Hiromichi Hoshina, Takamasa Seta, Toshiyuki Iwamoto, Iwao Hosako, Chiko Otani, Yasuko Kasai
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 109 ( 12-13 ) 2303 - 2314 2008.8
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Pressure broadening coefficients of the water vapor lines at 556.936 and 752.033 GHz
Takamasa Seta, Hiromichi Hoshina, Yasuko Kasai, Iwao Hosako, Chiko Otani, Stefan Lossow, Joachim Urban, Mattias Ekstrom, Patrick Eriksson, Donal Murtagh
JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 109 ( 1 ) 144 - 150 2008.1
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6 電磁波伝搬モデル 6-1 テラヘルツ電磁波大気伝搬モデル
笠井 康子, 瀬田 孝将
情報通信研究機構ジャーナル 54 ( 1 ) 61 - 64 2008
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7-4 MATRAS（テラヘルツ大気放射伝達モデル）
バロン フィリップ, メンドロック ヤナ, 笠井 康子, 落合 啓, 瀬田 孝将, 鷺 和俊, 鈴木 広大, 佐川 英夫, ウルバン ヨアヒム
情報通信研究機構ジャーナル 54 ( 1 ) 93 - 105 2008
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CO measurements from the ACE-FTS satellite instrument: data analysis and validation using ground-based, airborne and spaceborne observations
C. Clerbaux, M. George, S. Turquety, K. A. Walker, B. Barret, P. Bernath, C. Boone, T. Borsdorff, J. P. Cammas, V. Catoire, M. Coffey, P. -F. Coheur, M. Deeter, M. De Maziere, J. Drummond, P. Duchatelet, E. Dupuy, R. de Zafra, F. Eddounia, D. P. Edwards, L. Emmons, B. Funke, J. Gille, D. W. T. Griffith, J. Hannigan, F. Hase, M. Hoepfner, N. Jones, A. Kagawa, Y. Kasai, I. Kramer, E. Le Flochmoen, N. J. Livesey, M. Lopez-Puertas, M. Luo, E. Mahieu, D. Murtagh, P. Nedelec, A. Pazmino, H. Pumphrey, P. Ricaud, C. P. Rinsland, C. Robert, M. Schneider, C. Senten, G. Stiller, A. Strandberg, K. Strong, R. Sussmann, V. Thouret, J. Urban, A. Wiacek
ATMOSPHERIC CHEMISTRY AND PHYSICS 8 ( 9 ) 2569 - 2594 2008
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Chemistry of sprite discharges through ion-neutral reactions
Y. Hiraki, Y. Kasai, H. Fukunishi
ATMOSPHERIC CHEMISTRY AND PHYSICS 8 ( 14 ) 3919 - 3928 2008
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Validation of ACE-FTS v2.2 measurements of HCl, HF, CCl3F and CCl2F2 using space-, balloon- and ground-based instrument observations
E. Mahieu, P. Duchatelet, P. Demoulin, K. A. Walker, E. Dupuy, L. Froidevaux, C. Randall, V. Catoire, K. Strong, C. D. Boone, P. F. Bernath, J. -F. Blavier, T. Blumenstock, M. Coffey, M. De Maziere, D. Griffith, J. Hannigan, F. Hase, N. Jones, K. W. Jucks, A. Kagawa, Y. Kasai, Y. Mebarki, S. Mikuteit, R. Nassar, J. Notholt, C. P. Rinsland, C. Robert, O. Schrems, C. Senten, D. Smale, J. Taylor, C. Tetard, G. C. Toon, T. Warneke, S. W. Wood, R. Zander, C. Servais
ATMOSPHERIC CHEMISTRY AND PHYSICS 8 ( 20 ) 6199 - 6221 2008
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Validation of ACE-FTS v2.2 methane profiles from the upper troposphere to the lower mesosphere
M. De Maziere, C. Vigouroux, P. F. Bernath, P. Baron, T. Blumenstock, C. Boone, C. Brogniez, V. Catoire, M. Coffey, P. Duchatelet, D. Griffith, J. Hannigan, Y. Kasai, I. Kramer, N. Jones, E. Mahieu, G. L. Manney, C. Piccolo, C. Randall, C. Robert, C. Senten, K. Strong, J. Taylor, C. Tetard, K. A. Walker, S. Wood
ATMOSPHERIC CHEMISTRY AND PHYSICS 8 ( 9 ) 2421 - 2435 2008
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7-3 国際宇宙ステーション搭載サブミリ波サウンダ Ⅱ：データ処理アルゴリズム開発とSMILESシミュレータの構築
笠井 康子, 落合 啓
情報通信研究機構ジャーナル 54 ( 1 ) 81 - 92 2008
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7 テラヘルツ波リモートセンシング 7-1 テラヘルツ波リモートセンシング総論
笠井 康子
情報通信研究機構ジャーナル 54 ( 1 ) 65 - 67 2008
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Validation of HNO3, ClONO2, and N2O5 from the Atmospheric Chemistry Experiment Fourier Transform Spectrometer (ACE-FTS)
M. A. Wolff, T. Kerzenmacher, K. Strong, K. A. Walker, M. Toohey, E. Dupuy, P. F. Bernath, C. D. Boone, S. Brohede, V. Catoire, T. von Clarmann, M. Coffey, W. H. Daffer, M. De Maziere, P. Duchatelet, N. Glatthor, D. W. T. Griffith, J. Hannigan, F. Hase, M. Hoepfner, N. Huret, N. Jones, K. Jucks, A. Kagawa, Y. Kasai, I. Kramer, H. Kuellmann, J. Kuttippurath, E. Mahieu, G. Manney, C. T. McElroy, C. McLinden, Y. Mebarki, S. Mikuteit, D. Murtagh, C. Piccolo, P. Raspollini, M. Ridolfi, R. Ruhnke, M. Santee, C. Senten, D. Smale, C. Tetard, J. Urban, S. Wood
ATMOSPHERIC CHEMISTRY AND PHYSICS 8 ( 13 ) 3529 - 3562 2008
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7-5 MATRAS：雲散乱を考慮したケース
メンドロック ヤナ, バロン フィリップ, 笠井 康子
情報通信研究機構ジャーナル 54 ( 1 ) 107 - 116 2008
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Stratomesospheric CO measured by a ground-based Fourier Transform Spectrometer over Poker Flat, Alaska: Comparisons with Odin/SMR and a 2-D model
N. B. Jones, Y. Kasai, E. Dupuy, Y. Murayama, J. Urban, B. Barret, M. Sinnhuber, A. Kagawa, T. Koshiro, P. Ricaud, D. Murtagh
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 112 ( D20 ) 2007.10
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保科 宏道, 瀬田 孝将, 笠井 康子
Optronics : 光技術コーディネートジャーナル 26 ( 8 ) 110 - 116 2007.8
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Global observations of middle atmospheric water vapour by the Odin satellite: An overview
J. Urban, N. Lautie, D. Murtagh, P. Eriksson, Y. Kasai, S. Lossow, E. Dupuy, J. de la Noe, U. Frisk, M. Olberg, E. Le Flochmoen, P. Ricaud
PLANETARY AND SPACE SCIENCE 55 ( 9 ) 1093 - 1102 2007.6
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Annual variation of strato-mesospheric carbon monoxide measured by ground-based Fourier transform infrared spectrometry
V. Velazco, S. W. Wood, M. Sinnhuber, I. Kramer, N. B. Jones, Y. Kasai, J. Notholt, T. Warneke, T. Blumenstock, F. Hase, F. J. Murcray, O. Schrems
ATMOSPHERIC CHEMISTRY AND PHYSICS 7 1305 - 1312 2007.2
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Characteristics and error estimation of stratospheric ozone and ozone-related species over Poker Flat (65 degrees N, 147 degrees W), Alaska observed by a ground-based FTIR spectrometer from 2001 to 2003
A. Kagawa, Y. Kasai, N. B. Jones, M. Yamamori, K. Seki, F. Murcray, Y. Murayama, K. Mizutani, T. Itabe
ATMOSPHERIC CHEMISTRY AND PHYSICS 7 ( 14 ) 3791 - 3810 2007
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First Passive Permittivity Measurement of Lunar Regolith Simulant at Terahertz Band
Makito Kobayashi, Takayoshi Yamada, Hideaki Miyamoto, Tomohiro Takemura, Airi Toida, Yasuko Kasai
The Planetary Science Journal 6 ( 11 ) 266 - 266 2025.11
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Hiroshi Tanimoto, Tsuneo Matsunaga, Yu Someya, Tamaki Fujinawa, Hirofumi Ohyama, Isamu Morino, Hisashi Yashiro, Takafumi Sugita, Satoshi Inomata, Astrid Müller, Tazu Saeki, Yukio Yoshida, Yosuke Niwa, Makoto Saito, Hibiki Noda, Yousuke Yamashita, Kohei Ikeda, Nobuko Saigusa, Toshinobu Machida, Matthias Max Frey, Hyunkwang Lim, Priyanka Srivastava, Yoshitaka Jin, Atsushi Shimizu, Tomoaki Nishizawa, Yugo Kanaya, Takashi Sekiya, Prabir Patra, Masayuki Takigawa, Jagat Bisht, Yasko Kasai, Tomohiro O. Sato
Progress in Earth and Planetary Science 12 ( 1 ) 2025.1
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Experimental Study of Polarization Characteristics of Terahertz Emission
Takayoshi Yamada, Makito Kobayashi, Yuki Uchiyama, Yutaka Hasegawa, Hiroyuki Maezawa, Hideaki Miyamoto, Yasuko Kasai
IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY 15 ( 1 ) 1 - 7 2025.1
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GOSAT-GW TANSO-3 L2 NO2プロダクト（T3L2NO2）の導出アルゴリズム
藤縄 環, 林 顯光, 佐藤 知紘, 関谷 高志, 山下 陽介, 中村 綾乃, 杉田 考史, 金谷 有剛, 笠井 康子, 谷本 浩志
日本リモートセンシング学会誌 44 ( 2 ) 127 - 134 2024.6
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Maho Nakagawa, Takayoshi Yamada, Shigeru Sato, Ichiro Kato, Toshiyuki Nishibori, Kenichi Harada, Toru Taniguchi, Hiroaki Kawamoto, Kazuyuki Nakamura, Takahiro Kuhara, Yasuko Kasai
IEEE Journal on Miniaturization for Air and Space Systems 3 ( 1 ) 1 - 1 2021
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Novel index to comprehensively evaluate air cleanliness: the Clean aIr Index (CII) Reviewed
Tomohiro O. Sato, Takeshi Kuroda, Yasuko Kasai
Geoscience Communication 3 ( 2 ) 233 - 247 2020.8
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Validation analysis of deriving acetonitrile (CH3CN) profiles by observations of SMILES from the International Space Station, in the stratosphere and lower mesosphere
Tamaki Fujinawa, Tomohiro O. Sato, Takayoshi Yamada, Seidai Nara, Yuki Uchiyama, Kodai Takahashi, Naohiro Yoshida, Yasuko Kasai
2019.8
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Solving non-LTE problems in rotational transitions using the Gauss-Seidel method and its implementation in the atmospheric radiative transfer simulator Reviewed
T. Yamada, L. Rezac, R. Larsson, P. Hartogh, N. Yoshida, Y. Kasai
Astronomy and Astrophysics 619 2018.11
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An estimation of oxygen isotopic ratio on sun derived from ACE/FTS spectra
Yamada Akinori, Hideo Sagawa, Walker Kaley, Bernath Peter, Boone Chris, Ozima Minoru, Kasai Yasuko
Abstracts of Annual Meeting of the Geochemical Society of Japan 61 167 - 167 2014
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Vertical profile of δ18OOO from middle stratosphere to lower mesosphere derived by retrieval algorithm developed for SMILES spectra
T. O. Sato, H. Sagawa, N. Yoshida, Y. Kasai
2013.10
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Observed and simulated time evolution of HCl, ClONO2, and HF total column abundances Reviewed
R. Kohlhepp, R. Ruhnke, M. P. Chipperfield, M. De Maziere, J. Notholt, S. Barthlott, R. L. Batchelor, R. D. Blatherwick, Th. Blumenstock, M. T. Coffey, P. Demoulin, H. Fast, W. Feng, A. Goldman, D. W. T. Griffith, K. Hamann, J. W. Hannigan, F. Hase, N. B. Jones, A. Kagawa, I. Kaiser, Y. Kasai, O. Kirner, W. Kouker, R. Lindenmaier, E. Mahieu, R. L. Mittermeier, B. Monge-Sanz, I. Morino, I. Murata, H. Nakajima, M. Palm, C. Paton-Walsh, U. Raffalski, Th. Reddmann, M. Rettinger, C. P. Rinsland, E. Rozanov, M. Schneider, C. Senten, C. Servais, B. -M. Sinnhuber, D. Smale, K. Strong, R. Sussmann, J. R. Taylor, G. Vanhaelewyn, T. Warneke, C. Whaley, M. Wiehle, S. W. Wood
ATMOSPHERIC CHEMISTRY AND PHYSICS 12 ( 7 ) 3527 - 3556 2012
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Influence of CO2 line profiles on radiative and radiative-convective equilibrium states of the Venus lower atmosphere Reviewed
M. Takagi, K. Suzuki, H. Sagawa, P. Baron, J. Mendrok, Y. Kasai, Y. Matsuda
Journal of Geophysical Research E: Planets 115 ( 6 ) 2010.6
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AMATERASU: Model for atmospheric TeraHertz Radiation analysis and simulation
Baron, P., Mendrok, J., Kasai, Y., Ochiai, S., Seta, T., Sagi, K., Suzuki, K., Sagawa, H., Urban, J.
Journal of the National Institute of Information and Communications Technology 55 ( 1 ) 109 - 121 2008
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At the Dawn of a New Era in Terahertz Technology.
Iwao Hosako, Norihiko Sekine, Mikhail Patrashin, Shingo Saito, Kaori Fukunaga, Yasuko Kasai, Philippe Baron, Takamasa Seta, Jana Mendrok, Satoshi Ochiai, Hiroaki Yasuda
Proceedings of the IEEE 95 ( 8 ) 1611 - 1623 2007.8
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Analysis of radio astronomical data of the negative ion C6H- in IRC+10 216 Reviewed
Y. Kasai, E. Kagi, K. Kawaguchi
ASTROPHYSICAL JOURNAL 661 ( 1 ) L61 - L64 2007.5
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地球大気サブミリ波リモートセンシング観測のための実験室分子圧力幅測定
山田 真澄, 笠井 康子, 天埜 行儀
情報通信研究機構ジャーナル 53 ( 1.2 ) 131 - 136 2007
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1 アラスカプロジェクトの成果から～北極域大気観測技術の実証～ アラスカ・プロジェクトにおける北極域大気総合観測システムの開発と成果
村山 泰啓, 石井 守, 久保田 実, 森 弘隆, 水谷 耕平, 落合 啓, 笠井 康子, 川村 誠治, 田中 良昌, 増子 治信, 井口 俊夫, 熊谷 博, 菊池 崇, 佐藤 薫, リチャード L. コリンズ, ブレントンJ. ワトキンス, マーク コンデ, ビル ブリストウ, ロジャー W. スミス
情報通信研究機構ジャーナル 53 ( 1.2 ) 3 - 12 2007
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2 サブミリ波地球環境計測技術 超伝導サブミリ波リム放射サウンダ（SMILES）の開発と地上試験
落合 啓, 笠井 康子, 入交 芳久, 瀬田 益道, 真鍋 武嗣
情報通信研究機構ジャーナル 53 ( 1.2 ) 123 - 130 2007
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超伝導サブミリ波サウンダSMILES による上部対流圏オゾン観測に対して巻雲が及ぼす影響の評価
メンドロック ヤナ, バロン フィリップ, 笠井 康子
情報通信研究機構ジャーナル 53 ( 1.2 ) 161 - 173 2007
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アラスカにおけるオゾンゾンデキャンペーン観測及び観測結果の3 次元化学輸送モデルデータとの比較
山森 美穂, 村山 泰啓, 柴崎 和夫, 村田 功, 香川 晶子, 笠井 康子, 宮崎 和幸
情報通信研究機構ジャーナル 53 ( 1.2 ) 35 - 41 2007
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リモートセンシングから大気パラメータを得るニューラルネットワークの実装
フィリップ バロン, ヤナ メンドロック, 笠井 康子
情報通信研究機構ジャーナル 53 ( 1.2 ) 147 - 160 2007
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Validation of ILAS-II version 1.4 O-3, HNO3, and temperature data through comparison with ozonesonde, ground-based FTS, and lidar measurements in Alaska
Miho Yamamori, Akiko Kagawa, Yasuko Kasai, Kohei Mizutani, Yasuhiro Murayama, Takafumi Sugita, Hitoshi Irie, Hideaki Nakajima
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 111 ( D11 ) 2006.6
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Correlation between nuclear spin ratio of cyclic C3H2 and chemical evolution in TMC-1 cores
Yusuke Morisawa, Mizuho Fushitani, Yoshiyasu Kato, Hiromichi Hoshina, Zenzo Simizu, Shiori Watanabe, Yuki Miyamoto, Yasuko Kasai, Kentarou Kawaguchi, Takamasa Momose
ASTROPHYSICAL JOURNAL 642 ( 2 ) 954 - 965 2006.5
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YJ Kasai, J Urban, C Takahashi, S Hoshino, K Takahashi, J Inatani, M Shiotani, H Masuko
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 44 ( 3 ) 676 - 693 2006.3
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Method and results of retrieval of HDO/H2O in atmosphere from IMG/ADEOS and FTIR data
A. Yu. Toptygin, K. G. Gribanov, V. I. Zakharov, Y. Kasai, A. Kagawa, Y. Murayama, R. Imasu, G. A. Schmidt, G. Hoffmann, J. Jouzel
15TH SYMPOSIUM ON HIGH-RESOLUTION MOLECULAR SPECTROSCOPY 6580 2006
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Atmospheric observations by a balloon-borne superconducting submillimeter-wave limb-emission sounder Reviewed
Y. Irimajiri, S. Ochiai, Y. Kasai, T. Yamagami, Y. Saito, N. Izutsu, T. Kawasaki, I. Iijima, M. Namiki, I. Murata, K. Saito
CONFERENCE DIGEST OF THE 2006 JOINT 31ST INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES AND 14TH INTERNATIONAL CONFERENCE ON TERAHERTZ ELECTRONICS 495 - 495 2006
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Seasonal variations of CO and HCNin the troposphere measured by solar absorption spectroscopy over Poker Flat, Alaska
YJ Kasai, A Kagawa, N Jones, A Fujiwara, K Seki, Y Murayama, F Murcray
GEOPHYSICAL RESEARCH LETTERS 32 ( 19 ) 2005.10
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Search for CCH-, NCO-, and NCS- Negative Ions in Molecular Clouds
Y Morisawa, H Hoshina, Y Kato, Z Simizu, S Kuma, N Sogoshi, M Fushitani, S Watanabe, Y Miyamoto, T Momose, Y Kasai, K Kawaguchi
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 57 ( 2 ) 325 - 334 2005.4
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Theoretical study of O2-H2O: potential energy surface, molecular vibrations, and equilibrium constant at atmospheric temperatures. International journal
Akiyoshi Sabu, Satomi Kondo, Ryu Saito, Yasuko Kasai, Kenro Hashimoto
The journal of physical chemistry. A 109 ( 9 ) 1836 - 42 2005.3
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Ground-based measurement of strato-mesospheric CO by a FTIR spectrometer over Poker Flat, Alaska
YJ Kasai, T Koshiro, M Endo, NB Jones, Y Murayama
COUPLING PROCESSES IN THE MLT REGION 35 ( 11 ) 2024 - 2030 2005
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Generation of metastable oxygen atom O(D-1) in sprite halos
Y Hiraki, L Tong, H Fukunishi, K Nanbu, Y Kasai, A Ichimura
GEOPHYSICAL RESEARCH LETTERS 31 ( 14 ) 2004.7
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4-6 Poker Flat FTIR による大気微量成分の観測
関 浩二, 笠井 康子, 村山 泰啓, 水谷 耕平, 板部 敏和, フランクJ. マークレー, ウィリアムR. シンプソン, スティーブンA. ロイド
情報通信研究機構ジャーナル 48 ( 2 ) 171 - 179 2002
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Development of superconducting submillimeter-wave limb emission sounder (JEM/SMILES) aboard the International Space Station
H Ozeki, J Inatani, R Satoh, T Nishibori, N Ikeda, Y Fujii, T Nakajima, Y Iida, T Lida, K Kikuchi, T Miura, H Masuko, T Manabe, S Ochiai, M Seta, Y Irimajiri, Y Kasai, M Suzuki, T Shirai, S Tsujimaru, K Shibasaki, M Shiotani
SENSORS, SYSTEMS AND NEXT-GENERATION SATELLITES V 4540 209 - 220 2001
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Plan for the development of retrieval algorithm and ground segment of JEM/SMILES
M Suzuki, S Tsujimaru, S Ochiai, Y Kasai, T Manabe, H Masuko, K Shibasaki, T Shirai, J Inatani, M Shiotani
MICROWAVE REMOTE SENSING OF THE ATMOSPHERE AND ENVIRONMENT II 4152 283 - 291 2000
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JEM/SMILES limb-sounding of stratospheric trace species II. Simulation results for JEM/SMILES observations
Y Kasai, C Takahashi, S Tsujimaru, S Ochiai, S Buehler, K Takahashi, T Shirai, H Ozeki, M Shiotani
MICROWAVE REMOTE SENSING OF THE ATMOSPHERE AND ENVIRONMENT II 4152 263 - 273 2000
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Submillimeter limb-emission sounder JEM/SMILES aboard the Space Station
J Inatani, H Ozeki, R Satoh, T Nishibori, N Ikeda, Y Fujii, T Nakajima, Y Iida, T Iida, K Kikuchi, T Miura, H Masuko, T Manabe, S Ochiai, M Seta, Y Irimajiri, Y Kasai, M Suzuki, T Shirai, S Tsujimaru, K Shibasaki, M Shiotani
MICROWAVE REMOTE SENSING OF THE ATMOSPHERE AND ENVIRONMENT II 4152 243 - 254 2000
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Submillimeter-wave spectroscopic performance of JEM/SMILES
H Ozeki, Y Kasai, S Ochiai, S Tsujimaru, J Inatani, H Masuko, C Takahashi, L Mazuray, C Rosolen
MICROWAVE REMOTE SENSING OF THE ATMOSPHERE AND ENVIRONMENT II 4152 255 - 262 2000
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JEM/SMILES limb-sounding of stratospheric trace species I: retrieval algorithm and simulator
C Takahashi, Y Kasai, S Ochiai, S Tsujimaru, T Shirai, M Suzuki, T Manabe, M Seta, J Inatani, H Ozeki, T Nishibori, T Nakajima, Y Fujii, H Taniguchi, Y Itou, H Masuko
MICROWAVE REMOTE SENSING OF THE ATMOSPHERE AND ENVIRONMENT II 4152 274 - 282 2000
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Field emission silicon surge absorber
Y Kasai, M Maruyama, M Misawa, S Yonekubo
APPLIED SURFACE SCIENCE 146 ( 1-4 ) 224 - 229 1999.5
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Demonstration of Superconducting Sub-Millimeter-wave Limb Emission Sounder (SMILES) for observing trace gases in the middle atmosphere using the Exposed Facility of the Japanese Experimental Module (JEM) of the International Space Station
H Masuko, T Manabe, M Seta, Y Kasai, S Ochiai, Y Irimajiri, J Inatani, N Ikeda, T Nishibori, Y Iida, Y Fujii
SPACE TECHNOLOGY AND APPLICATIONS INTERNATIONAL FORUM - 1999, PTS ONE AND TWO 458 188 - 193 1999
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Observations of C-13 isotopomers of HC3N and HC5N in TMC-1: evidence for isotopic fractionation
S Takano, A Masuda, Y Hirahara, H Suzuki, M Ohishi, S Ishikawa, N Kaifu, Y Kasai, K Kawaguchi, TL Wilson
ASTRONOMY & ASTROPHYSICS 329 ( 3 ) 1156 - 1169 1998.1
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Laboratory detection of the C5N radical by Fourier transform microwave spectroscopy
Y Kasai, Y Sumiyoshi, Y Endo, K Kawaguchi
ASTROPHYSICAL JOURNAL 477 ( 1 ) L65 - L67 1997.3
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Observation of the O-u(-) (P-3(1)) ion-pair state of Cl-2 by perturbation-facilitated optical-optical double resonance
T Ishiwata, Y Kasai, K Obi
CHEMICAL PHYSICS LETTERS 261 ( 1-2 ) 175 - 180 1996.10
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A spectral-line survey observation of IRC +10216 between 28 and 50 GHz
K Kawaguchi, Y Kasai, S Ishikawa, N Kaifu
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 47 ( 6 ) 853 - 876 1995
MISC
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オゾンに関する観測的研究の将来展望 : 2018年秋季オゾン研究連絡会の報告
林田, 佐智子, 竹内, 綾子, 金谷, 有剛, 高島, 久洋, 藤原, 正智, 宮崎, 和幸, 笠井, 康子
天気 66 ( 6 ) 457 - 461 2019
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下田 陽久, 中島 映至, 本多 嘉明, 笠井 康子, 若林 裕之, 中村 健治, 高橋 暢宏, 杉本 伸夫, 今須 良一, 操野 年之, 江淵 直人
気象研究ノート ( 234 ) 1 - 4 2017.11
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操野 年之, 笠井 康子, 本多 嘉明, 中島 孝, 村上 浩, 可知 美佐子, 平田 貴文, 石元 裕史
気象研究ノート ( 234 ) 53 - 57 2017.11
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笠井 康子, 林田 佐智子, 金谷 有剛, 北 和之, 入江 仁士, 齋藤 尚子, 今須 良一
気象研究ノート ( 234 ) 39 - 46 2017.11
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Frontier of Planetary Science Revealed by Terahertz Wave Observations in Deep-space Explorations Reviewed
KURODA Takeshi, SAGAWA Hideo, SEKINE Yasuhito, KASAI Yasuko, HARTOGH Paul
Journal of The Remote Sensing Society of Japan 37 ( 4 ) 351 - 361 2017
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SATO Tomohiro, ZETTSU Koji, KASAI Yasuko
Journal of The Remote Sensing Society of Japan 37 ( 4 ) 341 - 350 2017
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テラヘルツ波リモートセンシングによる地球惑星探査小特集号によせて
笠井 康子, 石井 昌憲
日本リモートセンシング学会誌 37 ( 4 ) 37_4x1 - 37_4x1 2017
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Project Introduction: Terra-Hertz Remote Sensing
KASAI Y.
Journal of The Remote Sensing Society of Japan 36 ( 3 ) 251 - 255 2016
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Kasai Y., Sagawa H., Sekine Y., Kuroda T., Kikuchi K., Nishibori T., Manabe T., JUICE-SWI Japan Team
Planetary People - The Japanese Society for Planetary Sciences 23 ( 2 ) 140 - 148 2014
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Remote Sensing of Atmospheric Composition
Journal of The Remote Sensing Society of Japan 30 ( 5 ) 343 - 345 2010
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火星気象学,あるいは水文学への挑戦—Exploring the Martian meteorology and hydrology—特集 MELOS火星複合探査の科学検討
今村 剛, 笠井 康子, 佐川 英夫
遊・星・人 = Planetary people : 日本惑星科学会誌 18 ( 2 ) 76 - 78 2009.6
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笠井 康子, 落合 啓
情報通信研究機構季報 = Review of the National Institute of Information and Communications Technology / 情報通信研究機構広報部 編 54 ( 1 ) 81 - 92 2008.3
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テラヘルツ波リモートセンシング総論—Introduction to terahertz-wave remote sensing—テラヘルツ技術特集 ; テラヘルツ波リモートセンシング
笠井 康子
情報通信研究機構季報 = Review of the National Institute of Information and Communications Technology / 情報通信研究機構広報部 編 54 ( 1 ) 65 - 67 2008.3
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笠井 康子, 瀬田 孝将
情報通信研究機構季報 = Review of the National Institute of Information and Communications Technology / 情報通信研究機構広報部 編 54 ( 1 ) 61 - 64 2008.3
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Philippe Baron, Jana Mendrok, 笠井 康子
情報通信研究機構季報 = Review of the National Institute of Information and Communications Technology / 情報通信研究機構広報部 編 54 ( 1 ) 93 - 105 2008.3
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MATRAS--雲散乱を考慮したケース—The MATRAS scattering module—テラヘルツ技術特集 ; テラヘルツ波リモートセンシング
Jana Mendrok, Philippe Baron, 笠井 康子
情報通信研究機構季報 = Review of the National Institute of Information and Communications Technology / 情報通信研究機構広報部 編 54 ( 1 ) 107 - 116 2008.3
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山田 真澄, 笠井 康子, 天埜 行儀
情報通信研究機構季報 = Review of the National Institute of Information and Communications Technology / 情報通信研究機構広報部 編 53 ( 1・2 ) 131 - 136 2007
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Philippe Baron, Jana Mendrok, 笠井 康子
情報通信研究機構季報 = Review of the National Institute of Information and Communications Technology / 情報通信研究機構広報部 編 53 ( 1・2 ) 147 - 160 2007
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落合 啓, 笠井 康子, 入交 芳久
情報通信研究機構季報 = Review of the National Institute of Information and Communications Technology / 情報通信研究機構広報部 編 53 ( 1・2 ) 123 - 130 2007
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Jana Mendrok, Philippe Baron, 笠井 康子
情報通信研究機構季報 = Review of the National Institute of Information and Communications Technology / 情報通信研究機構広報部 編 53 ( 1・2 ) 161 - 173 2007
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TeraHertz ice cloud/water vapor micro satellite mission
江口菜穂, 増永浩彦, 笠井康子, 今須良一, 今岡啓治, 岩渕弘信, 小原慧一, 鈴木順子, 清木達也, 花田俊也, 早坂忠裕, 芳村圭
日本地球惑星科学連合大会予稿集(Web) 2023 2023
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JUICE木星氷衛星探査計画
関根康人, 齋藤義文, 浅村和史, 塩谷圭吾, 笠井康子, 笠羽康正, 春山純一, 松岡彩子
日本惑星科学会秋季講演会予稿集(Web) 2023 2023
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JUpiter ICy moons Explorer JUICE: Science goals of JUICE-Japan and cooperation with Japanese geochemists and cosmochemists
Sekine Yasuhito, Saito Yoshifumi, Asamura Kazushi, Enya Keigo, Kasai Yasko, Kasaba Yasumasa, Haruyama Jun'ichi, Matsuoka Ayako
Abstracts of Annual Meeting of the Geochemical Society of Japan 68 80 2021
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Measuring atmospheric chemistry and ozone levels
Kasai, Y, Sagawa, H
SPIE Newsroom 2013.7
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Tropospheric water vapor retrieval from a nadir THz/FIR sounder
Philippe Baron, Jana Mendrok, Eric Dupuy, Yasuko Kasai
Proceedings of SPIE - The International Society for Optical Engineering 7149 2008
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Studying the potential of Terahertz radiation for deriving ice cloud microphysical information
Jana Mendrok, Philippe Baron, Yasuko Kasai
Proceedings of SPIE - The International Society for Optical Engineering 7107 2008
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Yamamori M, Murayama Y, Shibasaki K, Murata I, Kagawa A, Kasai Y, Miyazaki K
Journal of the National Institute of Information and Communications Technology 54 ( 1-2 ) 39 - 45 2007
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Submillimeter-wave Observation of Earth's Atmosphere from Space
KASAI Yasuko
Journal of the Spectroscopical Society of Japan 55 ( 2 ) 89 - 98 2006
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8.人工衛星観測(国際オゾンシンポジウム-Sapporo 2000-報告)
笠井,康子
天気 48 ( 8 ) 566 - 567 2001.8
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NDSC10周年記念シンポジウム (Arcachon,France) の紹介
笠井,康子, 川上,修司, 河本,望, 杉田,考史, 村田,功
天気 48 ( 7 ) 505 - 506 2001.7
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成層圏オゾンの同位体の偏重
笠井 康子
化学と工業 = Chemistry and chemical industry 54 ( 4 ) 495 2001.4
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Superconducting Submillimeter-Wave Limb Emission Sounder (SMILES) onboard Japanese Experimental Module (JEM) of International Space Station (ISS)
H Masuko, T Manabe, M Seta, Y Kasai, S Ochiai, Y Irimajiri, J Inatani, N Ikeda, T Nishibori, H Ozeki, R Sato, Y Fujii, T Nakajima, H Watanabe, K Kikuchi, M Koyama
IGARSS 2000: IEEE 2000 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM, VOL I - VI, PROCEEDINGS 71 - 73 2000
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笠井 康子
分光研究 49 ( 4 ) 200 - 203 2000
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OPTICAL OPTICAL DOUBLE-RESONANCE SPECTROSCOPY OF THE CI(2) 1G((1)D) ION-PAIR STATE
T ISHIWATA, Y KASAI, K OBI
JOURNAL OF CHEMICAL PHYSICS 98 ( 5 ) 3620 - 3626 1993.3
Presentations
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宇宙科学シンポ
Research Projects
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What to extent of the lower tropospheric ozone can be observed from satellites?
Grant number：23K03496 2023.4 - 2026.3
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
Grant amount：\4550000 （ Direct Cost: \3500000 、 Indirect Cost：\1050000 ）
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Millimeter-Wave Band Monitoring Observationsof the Planetary Middle Atmospheres of the Solar System with 10m Single-dish Ground Based Telescope.
Grant number：22340042 2010 - 2012
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
MAEZAWA Hiroyuki, TOKUMARU Munetoshi, SAGAWA Hideo, KASAI Yasuko, OKUDA Takeshi, KASABA Yasumasa, KAWABE Ryohei, SAKAI Tsuyosi, TERADA Naoki, MIZUNO Akira
Grant amount：\19630000 （ Direct Cost: \15100000 、 Indirect Cost：\4530000 ）
Solar activities such as solar winds, solar flares, solar proton events have affected the environments and evolutions of planetary atmospheres. To further understand the habitable zone and atmospheric physical and chemical balance of solar and extra-solar planets, it is important to study the influence of activities of our Sun, which is a typical G-type star, on the atmospheres of Venus and Mars as well as of Earth. In order to study the relationship between solar activities in the atmospheric environments and climates of solar planets we started a long-term and regular monitoring observation project, SPART (solar planetary atmosphere research telescope), in 2011 by launching a single dish ground-based 10m-telescope. This is the utilization of the heritage of the Nobeyama Millimeter Array. The planetary middle atmosphere, which plays an important role in controlling the atmospheric environment of a planet, is sensitive to such activities because of its moderately low density. CO2is the main component in Mars and Venus's atmosphere. CO is formed from CO2basically by a photo-dissociation process owing to solar UV - X-ray radiation and incident high energy particles produced by solar flare events like coronal mass ejections. By the 115 GHz band monitoring heterodyne spectroscopies with SPART, we found that in Venus the CO mixing ratio at the altitude of around 80 km has decreased possibly for the past thirty years
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Exploiting precise physical chemistry of Earth's and planets' atmosphere by molecular theory and computation
Grant number：20550019 2008 - 2010
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
HASHIMOTO Kenro, KASAI Yasuko
Grant amount：\5070000 （ Direct Cost: \3900000 、 Indirect Cost：\1170000 ）
We have developed the computational procedure and object-oriented software of especially the anharmonic molecular vibrations to precisely study the atmospheric physical chemistry. The global distribution of O_2-H_2O complex was simulated using the result of molecular computations. The distribution of the complex follows that of water vapour in the troposphere and seems inversely proportional to temperature in the lower stratosphere. Preliminary estimates at the surface show the amount of the complex is comparable to CO or N_2O, ranking water vapour complexes among the ten most abundant species in the boundary layer.
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超高感度サブミリ波放射衛星による地球観測データ解析アルゴリズムの開発
Grant number：05F05607 2005 - 2006
日本学術振興会 科学研究費助成事業 特別研究員奨励費
笠井 康子, BARON P., BARON Philippe
Grant amount：\2400000 （ Direct Cost: \2400000 ）
H18年度は主に以下の3種類の研究開発を遂行した。
1)気球搭載超伝導サブミリ波サウンダの解析研究
2004と2007に気球放球を行ったが、そのフライトデータの解析を行った。2004年のフライトに関しては、各種測定データから受信機のゲイン変動を取り除く操作を行い、大気物理量リトリーバル解析が可能な状態にした。2007年のフライトデータはスペクトルが解釈出来ない振る舞いをしており、原因が不明であったが、種々の計測データや時間変動などを解析し、分光計の応答に深刻な問題が生じていることを突き止めた。
2)ニューラルネットワークリトリーバル解析
サブミリ波衛星データリトリーバル解析のためにニューラルネットワーク解析手法を確立した。これらはNICTとJAXAと開発を行っている国際宇宙ステーション搭載のJEM/SMILESデータの解析やチャルマス工科大学との共同研究の上でOdin/SMR衛星データの解析に応用が可能である。また、衛星で観測した雲データの解析にも有用である。
3)Odin/SMR衛星HO2
HO2は上部成層圏から中間圏にかけて存在し、その領域のオゾン存在量をコントロールする上で鍵となる物質であるが化学的に活性な物質であるため、大気中の存在量が極端に低い。従ってこれまでほとんど観測例はなかった。サブミリ波衛星Odin/SMRスペクトルデータを注意深く積算し、HO2物質を抽出、その存在量高度分布を導出することに成功した。 -
Structure and Dynamics of Ions and Free Radicals : Investigations by Submillimeter-wave Spectroscopy
Grant number：16350004 2004 - 2005
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
AMANO Takayoshi, KASAI Yasuko
Grant amount：\8200000 （ Direct Cost: \8200000 ）
This project was planned to pursue a further development of our on-going project on high-resolution spectroscopic investigation of molecular ions and free radicals which had been our main research objectives in the past several years. A major workhorse to promote our investigation is a submillimeter-wave spectrometer system. One such machine had been constructed on the basis of the past several years of research activities. The spectrometer covers the frequency range of 270-860 GHz with three back-ward wave oscillators. During the period of this research project, another similar submillimeter system has been completed. It utilizes a millimeter-wave frequency synthesizer as a local oscillator opposed to a millimeter-wave Gunn oscillator used in the old system. In addition, Fourier transform visible spectroscopy of the Swan system of C_2 and a visible system of C_3 has been carried out as a part of the collaboration with Professor Bernath at University of Waterloo by using a Bruker Fourier transform spectrometer.
Major achievements obtained during this project term are mainly in the following areas.
(1) Spectroscopy of molecular ions. (2) Extended investigation of the Swan band system of C_2. (3) Precise pressure broadening measurements of molecules relevant to the Earth's atmospheric chemistry. -
Submillimeter-wae Investigations of Reaction Intermediates Relevant to Interstellar and Atmospheric Chemistry
Grant number：13440172 2001 - 2003
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)
AMANO Takayoshi
Grant amount：\8100000 （ Direct Cost: \8100000 ）
During the past several years, out effort was focused on submillimeter-wave spectroscopic studies of free radicals and molecular ions, in particular, of astrophysical and atmospheric chemical interests. Very high-sensitivity, high-precision, and high efficiency of data acquisition of a spectrometer system are the most crucial factors for successful search of free radicals and ions. To achieve this goal, we employed Russian-made backward-wave oscillators as radiation sources. The oscillation frequencies have been stabilized by using a double phase-lock loop. Below major results are summarized and full report already published on these results will attached as Appendices. The collaboration with the JEM/SMILES group has been measured. These projects are also pursued in collaboration with the JPL group.
Major achievements obtained during this project term are mainly in the following areas: (1)Spectroscopy of unstable species (2)Identification of reaction intermediates in discharge plasma used for plasma CVD processes. (3Precise pressure broadening measurements of molecules relevant to the Earth's atmospheric chemistry. -
高分解能分光法によるラジカル錯体の検出と構造および分子間ポテンシャルの決定
Grant number：13127101 2001 - 2003
日本学術振興会 科学研究費助成事業 特定領域研究
遠藤 泰樹, 笠井 康子, 住吉 吉英
Grant amount：\41500000 （ Direct Cost: \41500000 ）
大気中での各種の化学反応や、地球大気の熱収支に対して、様々な分子錯体の存在が無視できない寄与をしているのではないかという主張に対して、我々は、フーリエ変換マイクロ波分光法などの高分解能分光の手法を通じてそれら分子錯体の実験室での検出を試みるとともに、実際の大気中での存在量の推定、大気中での観測の可能性を考察した。大気でのリモートセンシングに用いられるミリ波領域のデータを収集するための2重共鳴分光装置を整備し、この装置を用いて、紫外線の弱い極域でのオゾン層破壊に重要な寄与をしているとされているClOOおよびBrOOラジカルの高分解能スペクトルを初めて観測した。これらのラジカルが異常に弱いCi-O、Br-O結合を持つことを実験的に確認した。また、そのポテンシャルを精密に決定することにより、特にCl+O_2<->ClOOの平衡定数を見積もり、実験値との比較からCl-O結合エネルギーを正確に見積もった。ミリ波領域の遷移を観測できたことから、これらのラジカルを大気中で観測する可能性ができ、オゾン層破壊のメカニズムの実証的な研究の進展が期待できる。
また、対流圏の大気反応において重要な寄与をすると考えられる有機過酸化ラジカルとして、CH_3OOの高分解能スペクトルを初めて観測した。これも分光学的データのきわめて限られていたラジカル種である。今後このラジカルの詳細が明らかになることにより、大気反応での役割が解明できると期待できる成果である。 -
Dissociation-Recombination Dynamics of Iodine Molecule in Super Fluid State Helium
Grant number：10640506 1998 - 1999
Japan Society for the Promotion of Science Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C)
USHIDA Kiminori, TAKAMI Michio, KASAI Yasuko
Grant amount：\3400000 （ Direct Cost: \3400000 ）
In this research project we planned to observe some chemical reactions in the super-fluid helium as a solvent and to build up a measurement system for this purpose. The experimental setup needed for this purpose is a femtosecond-picosecond laser system synchronized with a nanosecond laser system which excites just before the pump-probe experiment. We improved the experimental system which we built previously to realize this synchronization. Completed improvements are follows ; 1)The laser pulses from Regen amplifier system of which repetition rate is 1kHz are reduced to a single pulse of variable repetition by using of a shutter system driven by galvano motors.2) To enhance the probe wavelength in pump-probe experiment to near-IR region. We built a new multi-channel spectrograph system and realize a measurement in 1100-1700nm area. 3) To improve the accuracy of the pump-probe experiment, we built up a new system to detect a small deviation of probing light less than about 10^<-7>. T check and to improve the accuracy of these experimental systems, we performed coherent phonon (CP) spectroscopy and optical heterodyne detection of optical Kerr effect (OKE). In CP experiment, we succeeded to probe the relaxation process of lattice vibrations clearly and developed a new method to estimate amount of lattice defects quantitatively by using of ion-irradiation. In OKE experiment, we attempted to detect very small signal to discuss the relationship between the molecular orientational relaxation and inter-molecular interactions. These new experimental result was obtained because of the remarkable improvement of the experimental accuracy. In the next step, we planned to enter the liquid helium experiment.
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超流動ヘリウム中におけるSF_6の赤外分光
Grant number：09874119 1997
日本学術振興会 科学研究費助成事業 萌芽的研究
笠井 康子, 高見 道生
Grant amount：\2100000 （ Direct Cost: \2100000 ）
本研究の目的は超流動ヘリウム中におけるSF_6分子の観測であった。今回は実験手法として新しい方法を開発し、今回、それらの技術を応用し、超流動ヘリウム中におけるSF_6分子の赤外吸収スペクトルを観測したので報告する。
実験は液体He用のメタルデュワ-中で行った。液体Heは減圧する事により超流動状態にした。He中に0.1〜0.01%に希釈したサンプル超流動He中に導入した。本研究の最も大きな課題は分子をいかにして孤立状態で注入するかである。分子は低温のため、すぐに微粒子になるからである。サンプル導入には断熱真空チューブを用いて用いた。また、迅速に孤立分子を注入するために、ジェネラルバブルを用いて分子を注入した。これにより、SF_6(ν3)のスペクトルを観測する事に成功した。このスペクトルの線幅は分解能より狭い。これらのスペクトルはサンプル導入を止めると消滅することにより、窓に付着したものからの信号ではない事を確認した。
気相中におけるSF_6(ν3)の値は947.975cm^<-1>であり、今回得られた947.7cm^<-1>の値はほとんどシフトが見られなかった。回転構造を含めた詳細な構造について情報を得るために、現在ダイオードレーザーでの測定を試みている。
また、非常に冷たく密度の濃いヘリウム雰囲気中でのCO-He錯体の振動回転スペクトルを観測した。 -
希ガス液体中におけるI_2分子の分光
Grant number：08740479 1996
日本学術振興会 科学研究費助成事業 奨励研究(A)
笠井 康子
Grant amount：\900000 （ Direct Cost: \900000 ）
ヨウ素分子を観測するために、まず、超流動ヘリウム中への効率の良い分子注入法を開発した。従来、金属サンプルに対して超流動ヘリウム中で分子を観測するには、あらかじめ試料を超流動ヘリウム中に注入、それをレーザー蒸発させることで分子を生成させていた。これは金属のサンプルには有効ではあるがそれ以外のサンプルに用いると、低温のため分子がクラスタリングしてしまう事が分かった。そこで、ナフタレンをテストサンプルとして用い、希釈した気体ガスの分子フロウ系による観測を開発、ヨウ素分子に適用した。
(1)X^1Σ^+(0_g)→D^3Π(O_u^+)励起:ヨウ素分子を基底状態から240nmの波長で励起したところ、280nmに発光が得られた。励起波長を240nm±5nm、または230nmに変化させても同様なスペクトルが得られる。これらのふるまい、波長、発光の線型から280nmの発光はD^3Π(0_u^+)→X^1Σ^+(0_g)と同定した。
(2)X^1Σ^+(0_g)→B^3Π(O_u^+)励起:B^3Π(O_u^+)状態からはどの波長で励起しても発光は見られなかった。希ガスマトリックス中、または液相中ではB→A、A'への緩和が早く、発光がほとんど見られない事が知られている。液体ヘリウム中でもAまたはA'への緩和が早い事が考えられる。
(3)230nm励起の際は605nmに極大を持つ反発型の発光が、240nm励起の時は550nmに極大を持つ反発型の発光が得られた。これらは中間状態とイオン対状態の間に存在する反発型のポテンシャルへの発光と思われる。