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東京大学 大気海洋研究所

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　口頭発表（国際）

2017

Rokotyan, N., R. Imasu, K. Gribanov, V. Zakharov, Bottlenecks in the remote sensing of the 13CO2/12CO2 isotopic ratio from GOSAT measurements,SPIE Proceedings Article, 10466, 2017.

2016

Zadvornykh, I.V., K.G. Gribanov, R. Imasu, GOSAT TIR and SWIR spectra analysis for CO2 and CH4 profiles retrieval,SPIE, doi:10.1117/12.2249494 , 2016.

Khamtnurova, MY, K.G. Gribanov, V.I. Zakharov, R. Imasu, The development of algorithms for atmospheric methane distribution retrieval from IASI/METOP spectra and their validation with MACC/ECMWF reanalysis data,SPIE, doi:10.1117/12.2249468, 2016.

2015

Imasu, R., Y. Arai, Y. Tanabe, Y. Someya, N. Saitoh, and H. Kondo, easonal variation and distribution features of CO2 concentration over an urban area retrieved from TANSO-FTS and in situ data, 7th GOSAT PI meeting, CalTech, USA, June 15, 2015.

Imasu, R., Y. Arai, Y. Tanabe, Y. Someya, N. Saitoh, H. Kondo, K. Shiomi, and B. Fomin, Seasonal variation and distribution feature of CO2 concentrations in Tokyo city retrieved from GOSAT and in situ data, ISARD-2015, St. Petersburg, June 23, 2015.

Imasu, R., L. Chen, M. Tamura, K. Tokuhashi, Y. Niwa, and B. Fomin, Global warming potentials and radiative effects of chlorofluorocarbon (CFC) replacements, hydrofluoroethers (HFEs) and hydrofluoroolefins (HFOs), ISARD-2015, St. Petersburg, June 23, 2015.

2014

Imasu, R., W. Takeuchi, A. Sekiyama, N. Saitoh, Y. Matsumi, M. Kawasaki, S. Hayashida, and A. Ono, Synergetic approach of bottom-up/top-down studies on CO2 and CH4 emissions from biomass burning and rice paddy in East Asia, Pacifico YOKOHAMA, 1 May, 2014.

　　Niwa, Y., Y. Fujii, Y. Sawa, A. Ito, H. Tomita, M. Satoh,,R. Imasu, and H. Matsueda, Development of a variational CO2 inversion system with an icosahedral grid atmosphere transport model, IWGGMS-10, Noordwijk, The Netherlands, May 5-7, 2014.

Imasu, R., Y. Someya, N. Saitoh, and B. Fomin, Retrieval of lower tropospheric CO2 concentrations using synergy of SWIR and TIR spectra calibrated with optimized parameters, 6th GOSAT PI meeting, Tsukuba, June 9-12, 2014

2013

Takeuchi, W., A. Sekiyama, and R. Imasu, 2013: Estimation of global carbon emissions from wild fires in forests and croplands, IGARSS 2013, paper#2979, 1805-1808, doi: 10.1109/IGARSS.2013.6723150, 2013

Rokotyan, N., V. Zakharov, K. Gribanov, F.-M. Breon, J. Jouzel, R. Imasu, Christof Petri, Thorsten Warneke, and Justus Notholt, "A possibility of retrieval of H2O and CH4 isotopologues concentration ratios from high resolution infrared measurements of atmospheric transmittance, EGU general assembly 2013, Vol.15, EGU2013-4257-1, Vienna, 7-12 April, 2013.

Someya, Y., R. Imasu, K. Shiomi, N. Saitoh, and Y. Ota, PSC and cirrus cloud detection over the high latitudes using thermal infrared spectra observed by TANSO-FTS/GOSAT, EGU general assembly Vol.15, EGU2013-10448-1, Vienna, 7-12 April, 2013.

Imasu, R., Y. Arai, H. Kondo, Y. Niwa, Y. Sawa, H. Matsueda, T. Machida, Y. Yoshida, T. Yokota, Y. Matsumi and N. Saitoh, Estimation of CO2 emission strength from a mega-sized city using satellite and in situ observation data, IWGGMS-9, Yokohama, May 29-31, 2013.

Ouchi,M., K. Miyaji, Y. Matsumi, T. Nakayama, R. Imasu, Comparison of CO2 column concentrations calculated from GOSAT SWIR with balloon-borne CO2 instrument measurements, IWGGMS-9, Yokohama, May 29-31, 2013.

Satioh,N. and R. Imasu, Profiles of CO2 and CH4 retrieved from GOSAT/TANSO-FTS thermal infrared spectra using an improved algorithm, IWGGMS-9, Yokohama, May 29-31, 2013.

Imasu, R., Y. Hayashi, Y. Someya, N. Saitoh, and B. Fomin, Estimation of lower tropospheric CO2 concentrations over urban area using synergy of TIR and SWIR data, 5th GOSAT PI meeting, Yokohama Symposia, Japan, June 20-22, 2013.

Saitoh, N. and R. Imasu, Studies on Atmospheric Minor Constituents Retrieved from Thermal Infrared Spectra of TANSO-FTS, G5th GOSAT PI meeting, Yokohama Symposia, Japan, June 20-22, 2013.

Imasu, R., Y. Arai, H. Kondo, Y. Niwa, Y. Sawa, H. Matsueda, T. Machida, and T. Yokota, Inverse analysis of CO2 emissions from a mega-sized city using satellite and in situ observation data, Geo Carbon Task Force CL-02 Meeting, Geneva, 3-4 October 2013.

Imasu R., Saitoh N., Hayashi Y., Someya Y., Arai Y., Kondo H., Machida T., Matsueda H., Sawa Y., Niwa Y., Fomin B.,Minor Gas Constituents and Cloud Properties Retrieved from TANSO-FTS/GOSAT Spectra, Inter. Sympo. on Atmos. Rad. And Dynam. (ISIRD-2013), St. Petersburg, Russia, June 24, 2013.

Zakharov, V.I., K.G. Gribanov, N.V. Rokotyan, R. Imasu, J. Jouzel, M. Butzin, М. Werner, Remote Sensing of Carbon Greenhouse Gases and Isotopes of Water Vapour in the Atmosphere Using Ground-Based FTIR of Ural Atmospheric Fourier Station in Kourovka, Inter. Sympo. on Atmos. Rad. And Dynam. (ISIRD-2013), St. Petersburg, Russia, June 24-27, 2013.

Imasu, R., Y. Arai, H. Kondo, Y. Niwa, Y. Sawa, H. Matsueda, T. Machida, and T. Yokota, Inverse analysis of CO2 emissions from a mega-sized city using satellite and in situ observation data, ABC-SLCP-CCAC Symposium, Seoul, Korea, 9 Sep., 2013.

Sato, T.M, H. Sagawa, H. Irie, K. Noguchi, N. Saitoh, R. Imasu, Y. Hayashi, and Y. Kasai, Simulation study of synergetic retrieval for tropospheric ozone with UV, TIR, MW measurements, 10th Annual Meeting, AOGS, AS34-D4-PM2-P011, Brisbane, 2013.6.27, 2013.

Takeuchi, W. A. Sekiyama, R. Imasu, 'Estimation of global carbon emissions from wild fires in forests and croplands', Melbourne, May 31, 2013.

Niwa, Y., T. Machida, Y. Sawa, H. Matsueda, T. J. Schuck, C. A. M. Brenninkmeijer, R. Imasu, and M. Satoh, Atmospheric inversion with CONTRAIL exposing CO2 dynamics in the Asian tropics, 9th Inter. CO2Conf., Beiging, China, 3-7 June, 2013.

Saitoh, N. and R. Imasu, CO2 profiles retrieved from GOSAT/TANSO-FTS thermal infrared, 9th Inter. CO2 Conf., Beiging, China, 3-7 June, 2013.

Imasu, R., Y. Arai, H. Kondo, Y. Niwa, Y. Sawa, H. Matsueda, T. Machida, and T. Yokota, Present status of GOSAT observation and inverse analysis of CO2 emissions from a mega-sized city using satellite and in situ observational data, SNU seminar, 5 Nov., 2013.

N. Satioh, and R. Imasu, CO2, CH4, AND OTHER TRACE GASES RETRIEVED FROM THERMAL INFRARED SPECTRA OF GOSAT SATELLITE, SPIE ER-2013,DRESDEN, GRERMANY, 23-26 SEP., 2013.

2012

Tanaka T., K. Shiomi, S. Kawakami, N. Saitoh, R. Imasu, M. Inoue, I. Morino, O. Uchino, C. Sweeney, and P. Tans, Characterization and validation of CO2 and CH4 products derived from the GOSAT thermal infrared band,SPIE,8528, DOI: 10.1117/12.979663, 2012

Niwa, Y., T. Machida, Y. Sawa, H. Matsueda, T. J. Schuck, C. A. M. Brenninkmeijer,R. Imasu, M. Satoh, 2012: Transport and inverse modeling analyses with the CONTRAIL data for estimating surface CO2 fluxes. Second Workshop of the Greenhouse Gas Budgets of South and Southeast Asia.

Niwa, Y., T. Machida, Y. Sawa, H. Matsueda, T. J. Schuck, C. A. M. Brenninkmeijer, R. Imasu, M. Satoh, 2012: Atmospheric CO2 inversion for 2006-2008 using CONTRAIL data. The Atmospheric Tracer Transport Model Intercomparison Project Meeting 2012.

Imasu, R., A Inagoya, Y. Hayashi, Y. Someya, N. Saitoh, K. Shiomi, T. Machida, Y. Niwa, H. Matsueda, Y. Sawa, Y. Matsumi, Retrieval of upper air CO2, CH4, and other minor constituents from GOSAT Thermal Infrared Spectra, ASSFTS-16, Madison, USA, May 22, 2012.

R. Imasu, A. Inagoya, Y. Hayashi, N. Saitoh, and K. Shiomi, Retrieval of minor constituents using GOSAT TANSO-FTS thermal infrared (TIR) data, IWGGMS, Pasadena, USA, June 17, 2012.

N. Saitoh, M. Touno, Y. Nasu, S. Hayashida,R. Imasu, K. Shiomi, T. Yokota, T. Machida, H. Matsueda, and Y. Sawa, Simultaneous observations of column abundances and profiles of CH4 by GOSAT: Validation of GOSAT CH4 products using aircraft CH4 measurements over Guam, IWGGMS, Pasadena, USA, June 17, 2012.

Imasu, R., Y. Hayashi, Y. Someya, N. Saitoh, and B. Fomin, E Studies on CO2 concentration in the lower atmosphere and its budget analysis using synergetic data of TANSO-FTS TIR and SWIR bands, 4th GOSAT PI meeting, Caltech, USA, June 20-22, 2012.

Saitoh, N.,R. Imasu, T. Sugita, S. Hayashida, and K. Shiomi, Algorithm improvement toward better retrieval of CO2 and CH4 profiles from GOSAT/TANSO-FTS thermal infrared spectra, AGU fall meeting, San Francisco, 2012.

2011

Hayashi, Y. and R. Imasu, Sensitivity studies of tropospheric ozone using TANSO-FTS on GOSAT, IWGGMS, Edinburgh, May 16, 2011.

Imasu, R., G. Inoue, H. Kondo, Y. Niwa, H. Matsueda, T. Machida, Y. Matsumi, M. Kawasaki, T. Nakayama, Y. Arai, Y. Hayashi, A. Inagoya, N. Saitoh, T. Yokota, GOSAT specific observation targeting at urban CO2 emissions, IWGGMS, Edinburgh, May 17, 2011.

Imasu, R., N. Saitoh, and B. Fomin, Studies on CO2 concentration in the lower atmosphere and its budget analysis using synergetic data of TANSO-FTS TIR and SWIR bands, 3rd GOSAT PI meeting, Scotland, England, May 19-20, 2011.

Kondo, H., R. Imasu, Y. Matsumi, Y. Niwa , Y. Sawa, H. Matsueda , K. Tsuboi, Development of local scale CO2 transportation model including data assimilation with GOSAT data, 3rd iLEAPS Science Conference,　Garmisch-Partenkirchen, Germany, 18-23 September, 2011.

2010

Imasu, R., Y. Hayashi, A. Inagoya, N. Saitoh, K. Shiomi, Retrieval of minor constituents from thermal infrared spectra observed by GOSAT TANSO-FTS sensor,SPIE,7857, doi: 10.1117/12.870684, 2010.

Kawakami, S., Y. Kasai, K. Kita, H. Irie, K. Sagi, S. Hayashida, B. Philippe,R. Imasu, Plan of Japanese Geostationary Mission for Meteorology and Air Pollution (GMAP-ASIA), ASSFTS-15, Nara, May 11-13, 2010.

Imasu, R., N. Saitoh, K. Shiomi, H. Suto, A. Kuze, Nakajima, M., and Nami Sekio, Radiometric calibration accuracy of GOSAT TANSO-FTS (TIR) sensor and gaseous component retrieval, International Workshop on Greenhouse Gass Monitoring from Space (IWGGMS), Kyoto, Jan. 26-27, 2010.

2009

Imasu, R., Naoko Saitoh, Kei Shiomi, Hiroshi Suto, Akihiko Kuze, and Masakatsu Nakajima, Upper atmospheric CO2 concentration retrieved from thermal infrared spectrum as observed using GOSAT TANSO-FTS (TIR) sensor,SPIE,7474, doi：10.1117/12.830387, 2009.

Sagi, K., P. Baron, E. Dupuy, K. Suzuki, K. Kita, R. Imasu, Y. Kasai, "Feasibility study for Geo-Stationary satellite observation of tropospheric pollutants"

Patra, P.K., Y. Niwa, Y. Sawa, M. Ikegami, R. Imasu, T. Maki, T. Machida, S. Makyutov, H. Matsueda, T. Nakazawa, T. Oda, M. Takigawa, CONTRAIL-Transport Model Intercomparison (TMI): analysis of CO2 concentrations in the UT/LS region, 8th International Carbon Dioxide Conference (ICDC), Jena, Germany, 2009.

Niwa, Y., P. K. Patra, Y. Sawa, M. Ikegami, R. Imasu, T. Maki, T. Machida, S. Maksyutov, H. Matsueda, T. Nakazawa, T. Oda, M. Satoh, CONTRAIL-Transport Model Intercomparison (TMI): analysis of CO2 vertical profiles, 8th International Carbon Dioxide Conference (ICDC), Jena, Germany, 2009.

Saitoh, N. and R. Imasu, CO2 Profiles from GOSAT/TANSO-FTS thermal infrared band: Retrieval methods and preliminary results, 8th International Carbon Dioxide Conference (ICDC), Jena, Germany, 2009.

Sagi, K., P. Baron, E. Dupuy, K. Suzuki, K. Kita, R. Imasu, Y. Kasai, "The observation of Asian tropospheric pollutants from geo-stationary satellite"

Imasu, R., N. Saitoh, K. Shiomi, H. Suto, A. Kuze, M. Nakajima, Radiometric calibration accuracy of GOSAT TANSO-FTS (TIR) sensor and trace gas retrievals, AGU fall meeting, A51A-0085, San Francisco, USA, Dec. 14-18, 2009.

Saitoh, N., and R. Imasu, CO2 Profile from Thermal Infrared Spectra of GOSAT/TANSO-FTS: First Results, AGU fall meeting, San Francisco, USA, Dec. 14-18, 2009.

Hayashi, Y., R. Imasu, T. Miyata, Observation of greenhouse gases from ground-based telescope "Subaru" and "TAO", AGU fall meeting, San Francisco, USA, Dec. 14-18, 2009.

Kasai, Y., K. Sagi, P. Baron, K. Suzuki, K. Kita, S. Hayashida, R.Imasu, and H. Akimoto, Feasibility study for Japanese Air Quality Mission from Geostationary Satellite: Infrared Imaging Spectrometer, AGU fall meeting, San Francisco, USA, Dec. 14-18, 2009.

2008

Gribanov, K., R. Imasu, V. Vasin, V. Zakharov, and W. Bleuten, A view from space on natural and anthropogenic methane over peatland of Western Siberia, EGU General Assembly 2008, EGU2008-A-03780, Vienna, Austria, 18 April 2008, 2008.

Saitoh, N., R. Imasu, Y. Ota, and Y. Niwa, CO2 Vertical Profile Retrieval from Thermal Infrared Spectra of GOSAT/TANSO-FTS, (poster), IWGGMS-5, Pasadena, USA, June 24-26, 2008.

Imasu, R., Naoko Saitoh, Yosuke Niwa, Hiroshi Suto, Akihiko Kuze, Kei Shiomi, Masakatsu Nakajima, Radiometric calibration accuracy of GOSAT-TANSO-FTS (TIR) relating to CO2 retrieval error(poster), SPIE, 7149, doi：10.1117_12.806145,IWGGMS-5, Pasadena, USA, June 24-26, 2008.

Niwa, Y. and R. Imasu, Tracer transport simulation by using NICAM, TransCom2008, Utrecht, Holland, June 6, 2008.

Arai, Y., R. Imasu, and T. Takemura, Aerosol data assimilation using ensemble Kalman filter method, pp.239-240, The 25th Symposium on AEROSOL SCIENCE & TECHNOLOGY, Aug.20-22, Kanazawa, 2008.

Imasu, R., N. Saitoh, Y. Niwa, H. Suto, A. Kuze, K. Shiomi, M. Nakajima, Radiometric calibration accuracy of GOSAT-TANSO-FTS (TIR) relating to CO2 retrieval error, SPIE 7149-12, New Caledonia, Nov. 17-21, 2008.

Saitoh, N., R. Imasu, Y. Ota, Y. Niwa, Retrieval Algorithm of CO2 Profile from Thermal Infrared Spectra of GOSAT/TANSO-FTS, AGU Fall Meeting, San Francisco, USA, Dec. 15-19. 2008.

2007

Niwa, Y., R. Imasu, M. Satoh, S. Maksyutov, A tracer transport simulation by an icosahedral grid model, 8th TransCom workshop, 24-27 April, Purdue, 2007.

Imasu, R., N. Saitoh, and Y. Niwa, Total performance of CO2 observation by GOSAT FTS-TIR sensor, 4th International Workshop on Greenhouse Gas Measurements from Space (IWGGMS), 25-27 June, Paris, 2007.

Saitoh, N., R. Imasu, Y. Ota, and Y. Niwa, CO2 and CH4 Concentrations Retrieved from Thermal Infrared Spectra of GOSAT/TANSO-FTS sensor, 4th International Workshop on Greenhouse Gas Measurements from Space (IWGGMS), 25-27 June, Paris, 2007.

Imasu, R., N. Saitoh, and Y. Niwa, Retrieval performance of GOSAT thermal infrared FTS sensor for measuring CO2concentrations and cloud properties, SPIE,6744, doi:10.1117/12.737796,2007.

Imasu, R., Y. Niwa, N. Saitoh, T. Machida, H. Matsueda, and Y. Sawa, Simulation studies on measurement of CO2 vertical distribution features by GOSAT FTS (thermal infrared) sensor, Toulouse, France, 13th International workshop on atmos. sci. space FTS (ASSFTS), 2007.11.7.

Saitoh, N., Y. Ota, R. Imasu, and Y. Niwa, CO2 VERTICAL PROFILES RETRIEVED FROM THERMAL INFRARED SPECTRA OF GOSAT/TANSO-FTS, Toulouse, France, 13th International workshop on atmos. sci. space FTS　(ASSFTS), 2007.11.7.

Niwa, Y., R. Imasu, M. Satoh, H. Matsueda, and T. Machida, "An analysis of CO2 concentration variation using inverted surface fluxes", UAW2007, Beiging, China, June 18-21, 2007.

Saitoh, N., Y. Ota, Y. Niwa, and R. Imasu, Accuracy and Precision of CO2 Vertical Profiles Retrieved from Thermal Infrared Spec-tra of GOSAT/TANSO-FTS sensor, AGU fall meeting, San Francisco, USA, Dec. 9-14, 2007.

2006

Saitoh, N., S. Taguchi, R. Imasu, CO2 Retrieval Simulation From Thermal Infrared Spectra of GOSAT Satellite, AGU 2006 Fall meeting, A21F-902, 2006.

Niwa, Y., R. Imasu, S. Maksyutov, and M. Satoh, Using an Icosahedral Grid Model as a Transport Model for Estimating CO2 Sources and Sinks, AGU 2006 Fall meeting, B43B-0270, 2006.

Niwa, Y., R. Imasu, M. Satoh, and S. Maksyutov, Estimating sources/sinks of CO2 using the icosahedral grid model, University Allied Workshop on Climate and Environment 2006, Taiwan, 18-20 July, 2006.

Imasu, R., S. Taguchi, and N. Saitoh, CO2 retrieval performance of GOSAT thermal infrared FTS sensor, SPIE's 6th Inter. Asia-Pacific Env. Remo. Sensing Symp. Honolulu, Goa, India, 6405-07, 2006.

Saitoh, N., Y. Ota, S. Taguchi, and R. Imasu, Assessment of uncertainty in CO2 concentrations retrieved from thermal infrared spectra of GOSAT satellite,SPIE,6405, 640508-1-640508-10, doi:10.1117/12.693803, 6th Inter. Asia-Pacific Env. Remo. Sensing Symp., Goa, India, 6405-07, 2006.

Imasu, R., N. Saitoh, Y. Ota, and S. Taguchi, CO2 retrieval performance of TANSO-FTS(TIR) sensor aboard Japanese greenhouse gases observing satellite (GOSAT), XVth High Res. Molec. Spectros.-2006, Nizhny Novgorod, Russia, 18-21 July,SPIE,6580, 6580Z-1-6580Z-6, doi:10.1117/12.724963, 2006.

Toptygin, A. Yu, K. G. Gribanov and V. I. Zakharov, Y. Kasai, A. Kagawa, Y. Murayama, R. Imasu, G.A. Schmidt, G. Hoffmann, and J. Jouzel, Method and results of retrieval of HDO/H2O in atmosphere from IMG/ADEOS and FTIR data,SPIE, 6580, 65800X-1-6580X-6, doi:10.1117/12.724949, XVth High Res. Molec. Spectros.-2006, Nizhny Novgorod, Russia, 18-21 July, 2006.

Imasu, R., Y. Ohno, M. Yasui, H. Kuroiwa, H. Kumagai, and H. Okamoto, Observation of atmospheric parameters using a synergy system consisted of ground-based FTS, LIDAR, and CPR, 2nd Asia-Pacific Radiation Symposium, Kanazawa, Japan, 1-2 August, 2006.

Saitoh, N, R. Imasu, S. Taguchi, and Y. Ota, GOSAT TIR Algorithm, 3rd International Workshop on Greenhouse Gas Measurements from Space (IWGGMS), 30-31 May, Tsukuba, 2006.

Ota, Y. and R. Imasu, CO2 concentration retrieval from IMG spectrum data, 3rd International Workshop on Greenhouse Gas Measurements from Space (IWGGMS), 30-31 May, Tsukuba, 2006.

2005

Ota, Y. and R. Imasu, CO2 Distribution Extracted from Thermal Infrared FTS Data in Combination with Meteorological Reanalysis Data, 2nd Inter. Workshop on Greenhouse Gas Meas. Space (IWGGMS), Pasadena, 2005.

Imasu, R. and Y. Ota, Thermal infrared FTS data as a component of the synergy of GOSAT data, 2nd Inter. Workshop on Greenhouse Gas Meas. Space (IWGGMS), Pasadena, 2005.

Ota, Y. and R. Imasu, CO2 distribution extracted from IMG/ADEOS data in combination with meteorological reanalysis data, ASSFTS 12 workshop, Quebec, 2005.

Imasu, R. and Y. Ota, CO2 columnar concentration retrieved from 10 μm weak absorption band data, ASSFTS 12 workshop, Quebec, 2005.

Gribanov, K.G., R. Imasu, A. Yu. Toptygin, W. Bleuten, and V; I. Zakharov, Methods and result of CH4 content retrieval in the atmosphere from AIRS/AQUA spectra in far IR. 7th Atmos. Spectro. Appl. meeting, Reims, France, 6-8 Sep., 2005.

Imasu, R., Y. Arai, and T. Takemura, Radiation field changes caused by Asian aerosols: Simulation studies supported by observational data, 2005 AIE International Symposium, Kyoto, 20 Sep. 2005.

Saitoh, N., Y. Ota, S. Taguchi, and R. Imasu, "Impact of Cloud Occurrence on CO2 Sources/Sinks Inversions Based on Satellite Data", AGU fall meeting, A21D-0898, on Tuesday, 6 December, 2005.

Imasu, R. and Y. Ota, "Columnar and Upper Level CO2 Concentration as Retrieved from IMG/ADEOS Thermal Infrared Data", AGU fall meeting, A41C-0060, on Thursday, 8 December, 2005.

2004

Imasu, R. and Y. Ota, Retrieval of CO2 vertical profile and columnar concentration from thermal infrared spectrum data, International Workshop for Greenhouse Gas Measurement from Space, 2004.4.22-23, Tokyo, 2004.

Imasu, R. and K. Oguma, Land surface emissivity model combined with CCSR/NIES AGCM, International Radiation Symposium 2004, Busan, Abst. pp.174, 2004.

Ota, Y. and R. Imasu, Characteristics of spectral emissivity for various types of the surface derived from IMG spectrum data, International Radiation Symposium 2004, Busan, Abst. pp.67, 2004.

Imasu, R. and Y. Ota, CO2 columnar amount retrieved from thermal infrared spectra observed by IMG/ADEOS, SPIE,5655, 106-113, doi:10.1117/12.578775, SPIE’s 4th Inter. Asia-Pacific Env. Remo. Sensing Symp. Honolulu, HI, USA, 5655-17, 2004.

Ota, Y. and R. Imasu, Temperature and water vapor retrieval from IMG/ADEOS spectrum data, SPIE, 5655, 437-444, doi:10.1117/12.578629, SPIE’s 4th Inter. Asia-Pacific Env. Remo. Sensing Symp. Honolulu, HI, USA, 5655-69, 2004.

Toptygin, A., K. G. Gribanov, R. Imasu, W. Bleuten, and V. I. Zakharov, Seasonal methane content in atmosphere of the permafrost boundary zone in Western Siberia determined from IMG/ADEOS and AIRS/AQUA data,SPIE, 5655, 508-514 , doi:10.1117/12.579494, SPIE’s 4th Inter. Asia-Pacific Env. Remo. Sensing Symp. Honolulu, HI, USA, 5655-83, 2004.

Gribanov, K.G., R. Imasu, G. Schmidt, A. Toptygin, and V. I. Zakharov, Neural　network retrieval of deuterium to hydrogen ratio in atmosphere from IMG/ADEOS　spectra,SPIE, 5655, 515-521, doi:10.1117/12.579496, SPIE’s 4th Inter. Asia-Pacific Env. Remo. Sensing Symp. Honolulu, HI,　USA, 5655-84, 2004.

Zakharov, V.I., R. Imasu, and K. G. Gribanov, Regarding free energy net of the earth and its monitoring from space concept,SPIE,5655, 540-547, doi:10.1117/12.585089, SPIE’s 4th Inter. Asia-Pacific　Env. Remo. Sensing Symp. Honolulu, HI, USA, 5655-90, 2004.

Imasu. R., S. Saikawa, V.I. Zakharov, K.G. Gribanov, G.Hoffmann, and J. Jouzel, Latitudinal distribution of the deuterium to hydrogen ratio in the atmospheric water vapor retrieved from space FTS data, AGU fall meeting, San Francisco, 2004.

Zakharov, V. I., K.G. Gribanov, A.Yu. Toptygin, R. Imasu, G. Hoffmann, and J. Jouzel, A First Satellite Data / Model Results Comparison for the Deuterium in Atmosphere, Stable Water Isotope Model Intercomparison Study (SIMS) Workshop, Vienna, Austria, 25-27 February 2004.

2003

Kondo, K., R. Imasu, T. Kimura, J. Tanii, T. Nakajima, Objectives and instrument design of EarthCARE FTS,SPIE,5152, 32-41, doi:10.1117/12.503986, 2003.

Imasu, R. and Y. Ota, Ozone retrieval from high-resolution spectrum data observed by IMG/ADEOS sensor,SPIE,4897, 57-64, doi:10.1117/12.467727, 2003.

Zakharov, V.I., R. Imasu, and K.G. Gribanov, D/H latitudinal distribution in the atmosphere retrieved from IMG spectra,SPIE,4897, 65-71, doi:10.1117/12.467724 2003.

Kondo, K, R. Imasu, T. Kimura, M. Suzuki, A. Kuze, and T. Ogawa, T. Nakajima, Mission objectives and instrument design concept of EarthCARE FTS,SPIE,4897, 91-98, doi:10.1117/12.467593, 2003.

Kimura, T, K. Kondo, H. Kumagai, H. Kuroiwa, C. Ishida, R. Oki, A. Kuze, M. Suzuki, H. Okamoto, R. Imasu, T.Nakajima, EarthCARE - Earth clouds, aerosol and radiation explorer: It's objectives and Japanese sensor designs, SPIE, 4882, 510-519, doi:10.1117/12.462582, 2003.

Imasu, R. and Y. Ota, A method for retrieving columnar CO2 concentration from thermal infrared radiation spectrum, Atmospheric Science from Space using Fourier Transform Spectrometry, Bad Wildbad, Germany, 2003.

Ota, Y. and R. Imasu, Characteristics of spectral emissivity for various types of the surface derived from IMG spectrum data, Atmospheric Science from Space using Fourier Transform Spectrometry, Bad Wildbad, Germany, 2003.

Zakharov V.I., K.G. Gribanov, R. Imasu, A. Khain, V.M. Shmelev, A.P. Vasiliev, From Industrialization to Greenhouse Explosion?, World Conference on Climate Change (WCCC2003), 30 September 2003.

2002

Imasu, R. and Y. Ota, Ozone retrieval from high-resolution spectrum data observed by IMG/ADEOS sensor, SPIE Remote Sensing of the Atmospher, Ocean, Environment, and Space, Hangzhou, 2002.

Zakharov, V.I., R. Imasu, and K.G. Gribanov, D/H latitudinal distribution in the atmosphere retrieved from IMG spectra, SPIE Remote Sensing of the Atmospher, Ocean, Environment, and Space, Hangzhou, 2002.

Kondo, K., R. Imasu, T. Kimura, M. Suzuki, A. Kuze, and T. Ogawa, Mission objectives and instrument design concept of EarthCARE FTS, Proceedings of SPIE The Third International Asia-Pacific Environment Remote Sensing Symposium, Hangzhou, (2002).

1999

Suzuki M. H. Kobayashi, R. Imasu, H. Shimoda, T. Ogawa, ATRAS: atmospheric radiation spectrometer results after phase A study,SPIE,3870, 171-178, doi:10.1117/12.373175, 1999.

Suzuki, M., K. Tsuno, E. Okumura, H. Kobayashi, R. Imasu, H. Shimoda, T. Ogawa, Conceptual design study for an IMG follow-on instrument atmospheric radiation spectrometer (ATRAS) proposed for Mission Demonstration Satellite (MDS),SPIE,3759, 118-129, doi:10.1117/12.372665, 1999.

1998

Murayama, T., N. Sugimoto, I. Matsui, K. Arao, K. Iokibe, R. Koga, T. Sakai, Y. Kubota, Y. Saito, M. Abo, N. Hagiwara, H. Kuze, N. Kaneyasu, R. Imasu, K. Asai, and K. Aoki, Lidar network observation of Asian dust (Kosa) in Japan,SPIE,3504, 8-15, doi:10.1117/12.319584, 1998.

Imasu, R., T. Ogawa, and H. Shimoda, Latitudinal distribution of methane as observed by IMG sensor aboard ADEOS satellite. Optical Remote Sensing of the Atmosphere and Clouds,SPIE,3501, 84-91, doi:10.1117/12.317761, 1998.