Climate Change Science Section

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• 2002

Eguchi, N., K. Kodera, B. Funatsu, H. Takashima, and R. Ueyama, 2016: Rapid convective transport of tropospheric air into the tropical lower stratosphere during the 2010 sudden stratospheric warming. SOLA, 12A, 13-17, doi:10.2151/sola.12A-003. [abstract] [full text]

Eguchi, N.,　K. Kodera, and T. Hirooka: Sudden tropical stratospheric warming by subtropical jet variation in the middle atmosphere. International Symposium on the Whole Atmosphere (ISWA), Tokyo, Japan, September 15, 2016.

Eguchi, N., Y. Yoshida, A. Hamada, and T. Inoue: Development of cirrus cloud detection method from TANSO-FTS spectra: Comparing with CALIOP and MODIS observations Part2. The 8th GOSAT RA PI Meeting, Kyoto, Japan, June 6, 2016.

Eguchi, N., K. Kodera, and T. Nasuno, 2015: A global non-hydrostatic model study of a downward coupling through the tropical tropopause layer during a stratospheric sudden warming. Atmospheric Chemistry and Physics, 15, 297-304, doi:10.5194/acp-15-297-2015. [abstract] [full text]

Kodera, K., B. M. Funatsu, C. Claud, and N. Eguchi, 2015: The role of convective overshooting clouds in tropical stratosphere–troposphere dynamical coupling, Atmospheric Chemistry and Physics, 15, 6767-6774, doi:10.5194/acp-15-6767-2015.

Eguchi, N., K. Kodera, R. Ueyama, H. Takashima, and M. Deushi: Rapid Transport of Carbon Monoxide and Water Vapor from Troposphere to Stratosphere via Tropical Convection During Stratospheric Sudden Warming. AGU Fall Meeting, San Francisco, CA, USA, December 16, 2015.

Eguchi, N., and N. Saitoh: Study for dynamical process of atmospheric compositions in troposphere and stratosphere using satellite data -Part I: Seasonal and year-to-year variations of CO2 and CH4 from GOSAT FTS TIR. 23rd CEReS International Symposium and 18th Environmental Remote Sensing symposium, Chiba, Japan, December 1, 2015.

Eguchi, N., K. Kodera, R. Ueyama, H. Takashima, and M. Deushi: Rapid Transport of CO from Troposphere to Stratosphere via Tropical Convection During Stratospheric Sudden Warming 2010. The First Asian Conference on Meteorology, Kyoto, Japan, October 27, 2015.

Eguchi, N., K. Kodera, R. Ueyama, H. Takashima, and M. Deushi: Rapid Transport of Carbon Monoxide from Troposphere to Stratosphere via Tropical Convection During Stratospheric Sudden Warming in January 2010. Composition and Transport in the Tropical Troposphere and Lower Stratosphere Meeting, Boulder, CO, USA, July 22, 2015.

Eguchi, N., K. Kodera, R. Ueyama, and H. Takashima: Rapid increase of carbon monoxide concentration in the tropical lower stratosphere during stratospheric sudden warming in January 2010. 95th AMS Annual Meeting, Phoenix, AZ, USA, January 7, 2015.

Eguchi, N., T. Hayasaka, and M. Sawada, 2014: Maritime-continental contrasts in the properties of low-level clouds: A case study of the summer of the 2003 Yamase, Japan, cloud event. Advances in Meteorology, 2014, 54809. [要旨] [全文]

Iida, C., T. Hirooka, and N. Eguchi, 2014: Circulation changes in the stratosphere and mesosphere during the stratospheric sudden warming event in January 2009. Journal of Geophysical Research Atmospheres, 119, 7104-7115, doi:10.1002/2013JD021252.

Eguchi, N., K. Kodera, R. Ueyama, Q. Li, H. Takashima, and C. Kobayashi: Rapid transport of CO and H₂O from troposphere to stratosphere via tropical convection during stratospheric sudden warming. AOGS 11th Annual Meeting, Sapporo, Japan, July 28, 2014.

Eguchi, N., K. Kodera, R. Ueyama, H. Takashima, and Q. Li: Rapid increases of CO and H₂O in the tropical lower stratosphere during January 2010 stratospheric sudden warming event. EGU 2014, Vienna, Australia, April 30, 2014.

Eguchi, N., K. Kodera, and T. Nasuno: Downward coupling process through TTL during a stratospheric sudden warming: a case study using a global non-hydrostatic model. SPARC 2014 General Assembly, Queenstown, New Zealand, January 16, 2014.

Eguchi, N., K. Kodera, and T. Nasuno: Stratospheric dynamical signal propagating through TTL: A case study of SSW period using a global non-hydrostatic model. AGU Fall Meeting, San Francisco, CA, USA, December 13, 2013.

Eguchi, N., K. Kodera, and T. Nasuno: Downward coupling process through TTL during a stratospheric sudden warming: a case study using a global non-hydrostatic model. WCRP Regional Workshop on Stratosphere-Troposphere Processes and their Role in Climate, Kyoto, Japan, April 1-2, 2013.

Oshchepkov, S., A. Bril, T. Yokota, I. Morino, Y. Yoshida, T. Matsunaga, D. Belikov, D. Wunch, P. Wennberg, G. Toon, C. O’Dell, A. Butz, S. Guerlet, A. Cogan, H. Boesch, N. Eguchi, N. Deutscher, D. Griffith, R. Macatangay, J. Notholt, R. Sussmann, M. Rettinger, V. Sherlock, J. Robinson, E. Kyrö, P. Heikkinen, D. G. Feist, T. Nagahama, N. Kadygrov, S. Maksyutov, O. Uchino, and H. Watanabe, 2012: Effects of atmospheric light scattering on spectroscopic observations of greenhouse gases from space: Validation of PPDF-based CO₂ retrievals from GOSAT. Journal of Geophysical Research, 117, D12305, doi:10.1029/2012JD017505.

Eguchi, N., K. Kodera, and T. Nasuno: Impact of abrupt stratospheric dynamical change on water vapor and ice cloud in Tropical Tropopause Layer: A case study of early winter 2011/2012. AGU Fall Meeting, San Francisco, CA, USA, December 4, 2012.

Eguchi, N., K. Kodera, and T. Nasuno: Impact of abrupt stratospheric dynamical change on Tropical Tropopause Layer. U.S. - Japan Bilateral Workshop on the Tropical Tropopause Layer: State of the Current Science and Future Observational Needs, Honolulu, HI, USA, October 18, 2012.

Eguchi, N., K. Kodera, and T. Nasuno: Stratospheric sudden warming impact on the tropical troposphereseen in NICAM - a global non-hydrostatic model. EGU General Assembly Conference, Vienna, Austria, April 26, 2012.

Eguchi, N., Y. Yoshida, I. Morino, N. Kikuchi, T. Saeki, and M. Inoue, 2011: Seasonal variations of greenhouse gas column-averaged dry air mole fractions retrieved from swir spectra of GOSAT TANSO-FTS. 2011 IEEE International Geoscience and Remote Sensing Symposium (IGARSS), 3542-3545. [要旨] [全文]

Kodera, K., N. Eguchi, J. N. Lee, Y. Kuroda, and S. Yukimoto, 2011: Sudden changes in the tropical stratospheric and tropospheric circulation during January 2009. Journal of the Meteorological Society of Japan, 89, 3, 283–290, doi:10.2151/jmsj.2011-308.

Yoshida, Y., Y. Ota, N. Eguchi, N. Kikuchi, K. Nobuta, H. Tran, I. Morino, and T. Yokota, 2011: Retrieval algorithm of CO₂ and CH₄ column abundances from short-wavelength infrared spectral observations by the Greenhouse Gases Observing Satellite. Atmospheric Measurement Techniques, 4, 4, 717-734, doi:10.5194/amt-4-717-2011.

Oguma, H., I. Morino, H. Suto, Y. Yoshida, N. Eguchi, A. Kuze, and Y. Yokota, 2011: First Observations of CO₂ absorption spectra in 2005 using the airship-born FTS (GOSAT TANSO-FTS BBM) in SWIR spectral region. International Journal of Remote Sensing, 32, 24, 9033-9049, DOI:10.1080/01431161.2010.535864.

Eguchi, N., and K. Kodera: Study of the stratospheric sudden warming impact on the water vapor and clouds in the tropical troposphere. AGU Fall Meeting, San Francisco, CA, USA, December 9, 2011.

Eguchi, N., T. Hayasaka, and M. Sawada: Characteristics of “Yamase” clouds : A case study of summer 2003. Fifth Japan-Korea-China Meteorological Meeting, Busan, Korea, October 25, 2011.

Eguchi, N., Y. Yoshida, I. Morino, N. Kikuchi, T. Saeki, M. Inoue, O. Uchino, S. Maksyutov, H. Watanabe and T. Yokota: Seasonal variations of greenhouse gas column-averaged dry air mole fractions retrieved from SWIR spectra of GOSAT TANSO-FTS. 2011 IEEE International Geoscience and Remote Sensing Symposium, Vancouver, Canada, July 28, 2011.

Eguchi, N., R. Saito, T. Saeki, D. Belikov, and S. Maksyutov, 2010: A priori covariance estimation for CO₂ and CH₄ retrievals. Journal of Geophysical Research Atmosphere, 115, D10215, doi:10.1029/2009JD013269. [要旨] [全文]

Eguchi, N., and K. Kodera, 2010: Impacts of stratospheric sudden warming event on tropical clouds and moisture fields in the TTL: A case study. SOLA, 6, 137-140, doi:10.2151/sola.2010-035. [要旨] [全文]

Takashima, H., N. Eguchi, and W. G. Read, 2010: A short-duration cooling event around the tropical tropopause and its effect on water vapor. Geophysical Research Letters, 37, L20804, doi:10.1029/2010GL044505.

Maksyutov,S., Y. Nakatsuka, V. Valsala, M. Saito, N. Kadygrov, T. Aoki, N. Eguchi, R. Hirata, M. Ikeda, G. Inoue, T. Nakazawa, R. Onishi, P. K. Patra, A. D. Richardson, T. Saeki, and T. Yokota, 2010: Algorithms for carbon flux estimation using GOSAT observational data. CGER’s Supercomputer Monograph Report, Vol.15.

Eguchi, N., Y. Yoshida, I. Morino, N. Kikuchi, T. Saeki, M. Inoue, O. Uchino, S. Maksyutov, H. Watanabe, and T. Yokota: Seasonal variations of CO₂ and CH₄ column abundances retrieved from SWIR of GOSAT TANSO-FTS. AGU Fall Meeting, San Francisco, CA, USA, December 17, 2010.

Eguchi, N., R. Saito, T. Saeki, S. Maksyutov, L. E. Ott, S. Pawson, Z. Zhu, and T. Yokota: A priori covariance estimation for CO₂ and CH₄ retrievals and its validation. 15th International Workshop on Atmospheric Science from Space using Fourier Transform Spectrometry, Nara, Japan, May 11-13, 2010.

Eguchi, N., Y. Yoshida, T. Saeki, I. Morino, O. Uchino, R. Saito, S. Maksyutov, and T. Yokota: Evaluation and early results of GOSAT TANSO-FTS SWIR Level 2 product (CO₂ and CH₄ column abundances data). 6th International Workshop for Greenhouse Gas Measurements from Space (IWGGMS), Kyoto, Japan, January 27, 2010.

Kadygrov, N., S. Maksyutov, N. Eguchi, T. Aoki, T. Nakazawa, T. Yokota, and G. Inoue, 2009: The role of simulated GOSAT total column CO₂ observations in surface CO₂ flux uncertainty reduction. Journal of Geophysical Research Atmosphere, 114, D21208, doi:10.1029/2008JD011597.

Yokota, T. Y. Yoshida, N. Eguchi, Y. Ota, T. Tanaka, S. Maksyutov, and H. Watanabe, 2009: Global concentrations of CO₂ and CH₄ retrieved from GOSAT: First preliminary results. SOLA, 5, 160-163, doi:10.2151/sola.2009-041.

Eguchi, N., Y. Yoshida, and T. Yokota: Preliminary Evaluation of GOSAT Level 2 (CO₂ and CH₄ column abundances) data product. AGU Fall Meeting, San Francisco, CA, USA, December 18, 2009.

Eguchi, N., L. Ott, R. Saito, Z. Zhu, T. Yokota, S. Pawson, and S. Maksyutov: Comparison analysis of CO₂ simulations between NIES Transport Model and GEOS-5 for GOSAT CO₂ retrieval. Fourth Japan-China-Korea Joint Conference on Meteorology, Tsukuba, Japan, November 9, 2009.

Eguchi, N., and K. Kodera: Tropical impact of 2009 northern stratospheric sudden warming, SPRAC-IGAC Joint Conference, Kyoto, Japan, October 28, 2009.

Eguchi, N., L. Ott, R. Saito, Z. Zhu, T. Yokota, S. Maksyutov, and S. Pawson: Comparison analysis of CO₂ simulation between NIES Transport Model and GEOS-5 for GOSAT CO₂ retrieval. 8th International Carbon Dioxide Conference (ICDC8), Jena, Germany, September 13-19, 2009.

Eguchi, N., and T. Yokota, 2008: Investigation of clear-sky occurrence rate estimated from CALIOP and MODIS observations. Geophysical Research Letters, 35, 23, L23816, doi:10.1029/2008GL035897.[要旨] [全文]

Eguchi, N., R. Saito, Y. Nakatsuka, and S. Maksyutov: Analysing Atmospheric CO₂/CH₄ variability to derive a prior covariance matrices for CO₂ retrieval from spectroscopic data. AGU Fall Meeting, San Francisco, CA, USA, December 18, 2008.

Eguchi, N., and K. Kodera: Tropical cirrus cloud variation during the southern stratospheric warming in 2006 and 2007. SPARC (Stratospheric Processes And their Role in Climate) 4th General Assembly, Bologna, Italia, September 5, 2008.

Eguchi, N., and T. Yokota: Investigation of clear-sky frequency from CALIOP observation. The 24th International Laser Radar Conference, Boulder, CO, USA, June 23-27, 2008.

Eguchi, N., T. Aoki, and T. Yokota: Expected spatial and temporal variations of GOSAT carbon dioxide retrieval error. The 5th International Workshop on Greenhouse Gas Measurements from Space (IWGGMS), Pasadena, CA, USA, June 24-26, 2008.

Eguchi, N., and K. Kodera, 2007: Impact of the 2002, Southern Hemisphere, stratospheric warming on the tropical cirrus clouds and convective activity. Geophysical Research Letters, 34, 5, L05819, doi:10.1029/2006GL028744. [要旨] [全文]

Eguchi, N., T. Yokota, and G. Inoue, 2007: Characteristics of cirrus clouds from ICESat/GLAS observations. Geophysical Research Letters, 34, 9, L09810, doi:10.1029/2007GL029529. [要旨] [全文]

Eguchi, N., M. Kiguchi, F. Murata, Y. Yamane, T. Terao, T. Hayashi, and S. Karmakar: Upper tropospheric water vapor variation over Asian monsoon during northern summer 2007. AGU Fall Meeting, San Francisco, CA, USA, December 11, 2007.

Eguchi, N., and K. Kodera: Impact of the 2002 stratospheric warming in the southern hemisphere on the tropical cirrus clouds and convective activity. The International Symposium on Coupling Processes in the Equatorial Atmosphere (CPEA Symposium), Kyoto, Japan, March 20-23, 2007.

Eguchi, N., T. Yokota, and G. Inoue: Cirrus cloud characteristics from the ICESat/GLAS observations. AGU Fall Meeting, San Francisco, CA, USA, December 12, 2006.

Eguchi, N., T. Yokota, and G. Inoue: Characteristics of cirrus clouds from the ICESat/GLAS observations. The 2nd Asian-Pacific Radiation Symposium (APRS2006), Kanazawa, Japan, July 31- August 2, 2006.

Eguchi, N., T. Yokota, and G. Inoue : Analysis of cirrus clouds by using the ICESat/GLAS data. 23rd International Laser Rader Conference (ILRC 23), Nara, Japan, July 25, 2006.

Eguchi, N., and K. Kodera: Impact of the 2002 stratospheric warming in the southern hemisphere on the tropical cirrus clouds and convective activity. The Third International Soundings of Ozone and Water in the Equatorial Region (SOWER) meeting, Shikotsuko, Japan, July 18-20, 2006.

Eguchi, N., T. Yokota, and G. Inoue: Investigating vertical distribution of global cirrus clouds using the ICESat/GLAS observations. The 3rd International Workshop on Greenhouse Gas Measurements from Space (IWGGMS), Tsukuba, Japan, May 30-31, 2006.

Eguchi, N., T. Yokota, and G. Inoue: Annual and interannual variations of cirrus clouds using MODIS/Terra. AGU Fall Meeting, San Francisco, CA, USA, December 8, 2005.

Eguchi, N.: Water vapor and cirrus cloud in the Tropical Tropopause Layer. The International Workshop on Submillimeter Wave Earth Observation -Past, Present, and Future-, Kyoto, Japan, November, 2005.

Eguchi, N., and M. Shiotani, 2004: Intraseasonal variations of water vapor and cirrus clouds in the tropical upper troposphere. Journal of Geophysical Research Atmosphere, 109, D12162, doi:10.1029/2003JD004314. [要旨] [全文]

Eguchi, N.: Water vapor variation in the Tropical Tropopause Layer. COE21 KAGI 2nd International Symposium, Beppu, Japan, November 2, 2004.

Eguchi, N., and M. Shiotani: Intraseasonal variations of water vapour and cirrus clouds in the Tropical Tropopause Layer (TTL). SPARC (Stratospheric Processes And their Role in Climate) 3rd General Assembly, Victoria (BC), Canada, August 5, 2004.

Shiotani, M. and Eguchi, N.: Intraseasonal variations of water vapor and cirrus clouds in the tropical upper troposphere. International Workshop on Critical Evaluation of mm-/submm-wave Spectroscopic Data for Atmospheric Observations, Mito, Japan, January 2004. [invited]

Eguchi, N., and M. Shiotani: Intraseasonal variations of humidity and thin cirrus clouds in the tropical upper troposphere. International Union of Geodesy and Geophysics, Sapporo, Japan, June 30-July 11, 2003.

Eguchi, N., and M. Shiotani: Intraseasonal variations of humidity and thin cirrus cloud in the tropical upper troposphere. The International Symposium on Stratospheric Variations and Climate, Fukuoka, Japan, November 12-15, 2002.