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Evaluation of Precipitation Estimates by at-Launch Codes of GPM/DPR Algorithms Using Synthetic Data from TRMM/PR Observations
https://jaxa.repo.nii.ac.jp/records/22529
https://jaxa.repo.nii.ac.jp/records/22529bf9e59d8-8754-42a8-b3f7-0fc0c53e92b3
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2015-06-10 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Evaluation of Precipitation Estimates by at-Launch Codes of GPM/DPR Algorithms Using Synthetic Data from TRMM/PR Observations | |||||
言語 | ||||||
言語 | eng | |||||
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 |
Kubota, Takuji
× Kubota, Takuji× Yoshida, Naofumi× Urita, Shinji× Iguchi, Toshio× Seto, Shinta× Meneghini, Robert× Awaka, Jun× Hanado, Hiroshi× Kida, Satoshi× Oki, Riko |
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著者所属(英) | ||||||
en | ||||||
Japan Aerospace Exploration Agency(JAXA) | ||||||
著者所属(英) | ||||||
en | ||||||
Remote Sensing Technology Center of Japan(RESTEC) | ||||||
著者所属(英) | ||||||
en | ||||||
Remote Sensing Technology Center of Japan(RESTEC) | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Information and Communications Technology(NICT) | ||||||
著者所属(英) | ||||||
en | ||||||
Nagasaki University | ||||||
著者所属(英) | ||||||
en | ||||||
National Aeronautics and Space Administration(NASA) | ||||||
著者所属(英) | ||||||
en | ||||||
Tokai University | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Information and Communications Technology(NICT) | ||||||
著者所属(英) | ||||||
en | ||||||
Japan Aerospace Exploration Agency(JAXA) | ||||||
著者所属(英) | ||||||
en | ||||||
Japan Aerospace Exploration Agency(JAXA) | ||||||
出版者(英) | ||||||
出版者 | Institute of Electrical and Electronics Engineers, Inc.(IEEE) | |||||
書誌情報 |
en : IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing 巻 7, 号 9, p. 3931-3944, 発行日 2014-09 |
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抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The Global Precipitation Measurement (GPM) Core Observatory will carry a Dual-frequency Precipitation Radar (DPR) consisting of a Ku-band precipitation radar (KuPR) and a Ka-band precipitation radar (KaPR). In this study, “at-launch” codes of DPR precipitation algorithms, which will be used in GPM ground systems at launch, were evaluated using synthetic data based upon the Tropical Rainfall Measuring Mission (TRMM) Precipitation Radar (PR) data. Results from the codes (Version 4.20131010) of the KuPR-only, KaPR-only, and DPR algorithms were compared with “true values” calculated based upon drop size distributions assumed in the synthetic data and standard results from the TRMM algorithms at an altitude of 2 km over the ocean. The results indicate that the total precipitation amounts during April 2011 from the KuPR and DPR algorithms are similar to the true values, whereas the estimates from the KaPR data are underestimated. Moreover, the DPR estimates yielded smaller precipitation rates for rates less than about 10 mm/h and greater precipitation rates above 10 mm/h. Underestimation of the KaPR estimates was analyzed in terms of measured radar reflectivity (Zm) of the KaPR at an altitude of 2 km. The underestimation of the KaPR data was most pronounced during strong precipitation events of Zm <; 18 dBZ (high attenuation cases) over heavy precipitation areas in the Tropics, whereas the underestimation was less pronounced when the Zm > 26 (moderate attenuation cases). The results suggest that the underestimation is caused by a problem in the attenuation correction method, which was verified by the improved codes. | |||||
内容記述(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Accepted: 2014-04-19 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1939-1404 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12359644 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | http://dx.doi.org/10.1109/JSTARS.2014.2320960 | |||||
関連名称 | info:doi/10.1109/JSTARS.2014.2320960 | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: PA1510027000 |