Oral

Symbol A (Atmospheric and Hydrospheric Sciences) » A-AS Atmospheric Sciences, Meteorology & Atmospheric Environment

[A-AS21] Atmospheric Chemistry

Thu. May 28, 2015 11:00 AM - 12:45 PM 201B (2F)

Convener:*Yousuke Sawa(Oceanography and Geochemistry Research Department, Meteorological Research Institute), Nobuyuki Takegawa(Graduate School of Science and Engineering, Tokyo Metropolitan University), Yugo Kanaya(Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology), Kenshi Takahashi(Research Institute for Sustainable Humanosphere, Kyoto University), Hiroshi Tanimoto(National Institute for Environmental Studies), Chair:Motoki Sasakawa(National Institute for Environmental Studies)

This session provides a forum for the presentation of the broad spectrum of tropospheric and stratospheric chemistry, including various research topics (air quality and climate), approaches (modeling, field measurements, satellite data analysis, and laboratory studies), and species (gas and aerosol). This session also provides an opportunity for discussing possible future collaboration with other research fields relevant to atmospheric chemistry.

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11:00 AM - 11:15 AM

[AAS21-13] Observations of O3, CO, CO2 and CH4 concentrations at Happo and estimations of the source by chemical transport model

*Sachiko OKAMOTO¹, Hiroshi TANIMOTO¹, Hideki NARA¹, Kohei IKEDA¹, Kazuyo YAMAJI² (1.National Institute for Environmental Studies, 2.Kobe University)

11:15 AM - 11:30 AM

[AAS21-14] Long-term variations of atmospheric methane concentration over Siberia derived from aircraft and tower measurements

*Motoki SASAKAWA¹, Toshinobu MACHIDA¹, Akihiko ITO¹, Noritsugu TSUDA², Mikhail Arshinov³, Denis Davydov³, Alexandrov Fofonov³, Oleg Krasnov³, Prabir Patra⁴, Kentaro ISHIJIMA⁴ (1.National Institute for Environmental Studies, 2.Global Environmental Forum, 3.V.E. Zuev Institute of Atmospheric Optics, Russian Academy of Sciences, 4.Japan Agency for Marine-Earth Science and Technology)

11:30 AM - 11:45 AM

[AAS21-15] Variations of atmospheric methane concentration and its carbon and hydrogen isotopic ratios at Churchill, Canada

*Ryo FUJITA¹, Shinji MORIMOTO¹, Taku UMEZAWA², Worthy Doug³, Shuji AOKI¹, Takakiyo NAKAZAWA¹ (1.Center for Atmospheric and Oceanic Studies, Graduate School of Science, Tohoku University, 2.National Institute for Environmental Studies, 3.Environment Canada)

11:45 AM - 12:00 PM

[AAS21-16] Temporal variation of methane profile observed with FTIR at Tsukuba

*Isao MURATA¹, Hideaki NAKAJIMA², Isamu MORINO³ (1.Graduate School of Environmental Studies, Tohoku University, 2.Council for Science, Technology and Innovation, Cabinet Office, Government of Japan, 3.National Institute for Environmental Studies)

12:00 PM - 12:15 PM

[AAS21-17] Atmospheric methane measurement by open-path laser methane instrument at paddy fields in India

*Takehiro HIDEMORI¹, Yutaka MATSUMI¹, Tomoki NAKAYAMA¹, Hiroshi SASAGO¹, Masahiro KAWASAKI¹, Ryoichi IMASU², Minaco ADACHI³, Wataru TAKEUCHI³, Yukio TERAO⁴, Shohei NOMURA⁴, Toshinobu MACHIDA⁴, Kenshi TAKAHASHI⁵, Surendra Dhaka⁶, Jagmohan Singh⁶ (1.Solar-Terrestrial Environment Laboratory, Nagoya University, 2.Atmosphere and Ocean Research Institute, The University of Tokyo, 3.The University of Tokyo, Institute of Industrial Science, 4.National Institute for Environmental Studies, 5.Research Institute for Sustainable Humanosphere, Kyoto University, 6.Rajdhani College, Univ. of Delhi)

12:15 PM - 12:30 PM

[AAS21-18] Relationship between interannual variation in the changing rate of APO trend at Cape Ochi-ishi and PDO

*Yasunori TOHJIMA¹, Hitoshi MUKAI¹, Toshinobu MACHIDA¹, Yukio TERAO¹ (1.National Institute for Environmental Studies)

12:30 PM - 12:45 PM

[AAS21-19] Variations in the atmospheric Ar/N2 and APO observed at Tsukuba, Ochi-Ishi, Hateruma and Minamitorishima, Japan

*Shigeyuki ISHIDOYA¹, Shohei MURAYAMA¹, Yasunori TOHJIMA², Kazuhiro TSUBOI³, Hidekazu MATSUEDA³, Shoichi TAGUCHI¹, Prabir Patra⁴, Hiroaki KONDO¹ (1.National Institute of Advanced Industrial Science and Technology (AIST), 2.National Institute for Environmental Studies (NIES), 3.Meteorological Research Institute (MRI), 4.Japan Agency for Marine-Earth Science and Technology (JAMSTEC))