| アイテムタイプ |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2014-12-17 |
| タイトル |
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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 |
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言語 |
eng |
| キーワード |
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主題Scheme |
Other |
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主題 |
Algorithms |
| キーワード |
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主題Scheme |
Other |
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主題 |
attenuation |
| キーワード |
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主題Scheme |
Other |
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主題 |
Global Precipitation Measurement (GPM) |
| キーワード |
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主題Scheme |
Other |
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主題 |
rain |
| キーワード |
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主題Scheme |
Other |
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主題 |
simulation |
| キーワード |
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主題Scheme |
Other |
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主題 |
snow |
| キーワード |
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主題Scheme |
Other |
|
主題 |
spaceborne radar |
| キーワード |
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主題Scheme |
Other |
|
主題 |
Tropical Rainfall Measuring Mission (TRMM) |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
Kubota, Takuji
Yoshida, Naofumi
Urita, Shinji
Iguchi, Toshio
Seto, Shinta
Meneghini, Robert
Awaka, Jun
Hanado, Hiroshi
Kida, Satoshi
Oki, Riko
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| 抄録 |
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内容記述タイプ |
Abstract |
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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 ({\bf Z}-{\bf m}) of the KaPR at an altitude of 2 km. The underestimation of the KaPR data was most pronounced during strong precipitation events of {\bf Z}-{\bf m} \lt {\bf 18}~{\bf dBZ} (high attenuation cases) over heavy precipitation areas in the Tropics, whereas the underestimation was less pronounced when the {\bf Z}-{\bf m}\gt 26~{\bf dBZ} (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. |
| 書誌情報 |
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
巻 7,
号 9,
p. 3931-3944,
発行日 2014-09-01
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| 出版者 |
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出版者 |
IEEE |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
19391404 |
| EISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
21511535 |
| DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
10.1109/JSTARS.2014.2320960 |
| 権利 |
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権利情報 |
This is an open-access article. |
| 権利 |
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|
権利情報 |
c 2014 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information. |
| 著者版フラグ |
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出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 引用 |
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内容記述タイプ |
Other |
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内容記述 |
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 7(9), pp.3931-3944; 2014 |
IEEE_JSTAEORS7_6820746.pdf (3.9 MB)
