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New approaches to removing cloud shadows and evaluating the 380nm surface reflectance for improved aerosol optical thickness retrievals from the GOSAT/TANSO-Cloud and Aerosol Imager
https://jaxa.repo.nii.ac.jp/records/22372
https://jaxa.repo.nii.ac.jp/records/22372d595d608-3c0f-4b5d-97de-3076875dc970
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2015-03-26 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | New approaches to removing cloud shadows and evaluating the 380nm surface reflectance for improved aerosol optical thickness retrievals from the GOSAT/TANSO-Cloud and Aerosol Imager | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | aerosol; remote sensing; satellite | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
福田, 悟
× 福田, 悟× Nakajima, Teruyuki× Takenaka, Hideaki× Higurashi, Akiko× Kikuchi, Nobuyuki× Nakajima, Takashi Y.× Ishida, Haruma× Fukuda, Satoru× Nakajima, Teruyuki× Takenaka, Hideaki× Higurashi, Akiko× Kikuchi, Nobuyuki× Nakajima, Takashi Y.× Ishida, Haruma |
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著者所属 | ||||||
宇宙航空研究開発機構(JAXA) | ||||||
著者所属 | ||||||
東京大学 | ||||||
著者所属 | ||||||
東京大学 | ||||||
著者所属 | ||||||
国立環境研究所 | ||||||
著者所属 | ||||||
イー・アンド・イー ソリューションズ株式会社 | ||||||
著者所属 | ||||||
東海大学 | ||||||
著者所属 | ||||||
山口大学 | ||||||
著者所属(英) | ||||||
en | ||||||
Japan Aerospace Exploration Agency(JAXA) | ||||||
著者所属(英) | ||||||
en | ||||||
University of Tokyo | ||||||
著者所属(英) | ||||||
en | ||||||
University of Tokyo | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute for Environmental Studies | ||||||
著者所属(英) | ||||||
en | ||||||
E and E Solutions Inc. | ||||||
著者所属(英) | ||||||
en | ||||||
Tokai University | ||||||
著者所属(英) | ||||||
en | ||||||
Yamaguchi University | ||||||
出版者(英) | ||||||
出版者 | American Geophysical Union | |||||
書誌情報 |
en : Journal of Geophysical Research: Atmospheres 巻 118, 号 24, p. 13520-13531, 発行日 2013-12 |
|||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | [1] A satellite aerosol retrieval algorithm was developed to utilize a near-ultraviolet band of the Greenhouse gases Observing SATellite/Thermal And Near infrared Sensor for carbon Observation (GOSAT/TANSO)-Cloud and Aerosol Imager (CAI). At near-ultraviolet wavelengths, the surface reflectance over land is smaller than that at visible wavelengths. Therefore, it is thought possible to reduce retrieval error by using the near-ultraviolet spectral region. In the present study, we first developed a cloud shadow detection algorithm that uses first and second minimum reflectances of 380 nm and 680 nm based on the difference in Rayleigh scattering contribution for these two bands. Then, we developed a new surface reflectance correction algorithm, the modified Kaufman method, which uses minimum reflectance data at 680 nm and the NDVI to estimate the surface reflectance at 380 nm. This algorithm was found to be particularly effective at reducing the aerosol effect remaining in the 380 nm minimum reflectance; this effect has previously proven difficult to remove owing to the infrequent sampling rate associated with the three-day recursion period of GOSAT and the narrow CAI swath of 1000 km. Finally, we applied these two algorithms to retrieve aerosol optical thicknesses over a land area. Our results exhibited better agreement with sun-sky radiometer observations than results obtained using a simple surface reflectance correction technique using minimum radiances. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2169-897X | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10819765 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | http://dx.doi.org/10.1002/2013JD020090 | |||||
関連名称 | info:doi/10.1002/2013JD020090 | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: PA1410003000 |