サガワ ヒデオ   SAGAWA HIDEO
  佐川 英夫
   所属   京都産業大学  理学部 宇宙物理・気象学科
   職種   教授
言語種別 英語
発行・発表の年月 2015/03
形態種別 研究論文
査読 査読あり
標題 Stratospheric and mesospheric HO2 observations from the Aura Microwave Limb Sounder
執筆形態 その他
掲載誌名 Atmospheric Chemistry and Physics
出版社・発行元 COPERNICUS GESELLSCHAFT MBH
巻・号・頁 15(5),pp.2889-2902
著者・共著者 Millán, L,Wang, S,Livesey, N,Kinnison, D,Sagawa, H,Kasai, Y
概要 This study introduces stratospheric and mesospheric hydroperoxyl radical (HO2) estimates from the Aura Microwave Limb Sounder (MLS) using an offline retrieval (i.e. run separately from the standard MLS algorithm). This new data set provides two daily zonal averages, one during daytime from 10 to 0.0032 hPa (using day-minus-night differences between 10 and 1 hPa to ameliorate systematic biases) and one during nighttime from 1 to 0.0032 hPa. The vertical resolution of this new data set varies from about 4 km at 10 hPa to around 14 km at 0.0032 hPa. A description of the methodology and an error analysis are presented. Comparisons against the Whole Atmosphere Community Climate Model (WACCM), the Superconducting Submillimeter-Wave Limb-Emission Sounder (SMILES) and the Far Infrared Spectrometer (FIRS-2) measurements, as well as photochemical simulations, demonstrate the robustness of the retrieval and indicate that the retrieval is sensitive enough to detect mesospheric HO2 layers during both day and night. This new data set is the first long-term HO2 stratospheric and mesospheric satellite record and it provides needed constraints to help resolve the O-3 deficit problem and the "HOx dilemma".
DOI 10.5194/acp-15-2889-2015
ISSN 1680-7316/1680-7324