講演名 | 2009-11-02 A TREND OBSERVED IN TRMM/PR MONTHLY RAINFALL PRODUCTS AND AN EVALUATION OF SAMPLING ERROR BY A BOOTSTRAP METHOD(WSANE 2009 (Workshop for Space, Aeronautical and Navigational Electronics)) , |
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抄録(英) | This study examines a trend in 7-year monthly rainfall amounts (September 2001-August 2008) observed by the TRMM Precipitation Radar (PR). It is shown that the monthly rainfall amounts averaged in the range of 35°S to 35°N (PR observation range) tend to increase slightly over this period. This tendency can be considered to be affected by sampling errors due to the narrow observation swaths of the PR, in addition to natural variations. Therefore, this study developed the method of evaluating the sampling errors by a bootstrap method using the actual data observed by the PR. We examined the trend in the averaged rainfall amounts during 7 years considering the simulated sampling errors. As a result, the positive trend was significantly detected, even when sampling error was removed. From this, it can be concluded that this positive trend is highly likely to be due to natural variations. |
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キーワード(英) | Sampling error / Bootstrap / Trend detection / Rainfall / TRMM Precipitation Radar |
資料番号 | SANE2009-89 |
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研究会 | SANE |
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開催期間 | 2009/10/26(から1日開催) |
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申込み研究会 | Space, Aeronautical and Navigational Electronics (SANE) |
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本文の言語 | ENG |
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サブタイトル(和) | |
タイトル(英) | A TREND OBSERVED IN TRMM/PR MONTHLY RAINFALL PRODUCTS AND AN EVALUATION OF SAMPLING ERROR BY A BOOTSTRAP METHOD(WSANE 2009 (Workshop for Space, Aeronautical and Navigational Electronics)) |
サブタイトル(和) | |
キーワード(1)(和/英) | / Sampling error |
第 1 著者 氏名(和/英) | / Yasuhisa IIDA |
第 1 著者 所属(和/英) | Earth Observation Research Center, JAXA |
発表年月日 | 2009-11-02 |
資料番号 | SANE2009-89 |
巻番号(vol) | vol.109 |
号番号(no) | 265 |
ページ範囲 | pp.- |
ページ数 | 6 |
発行日 |