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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概要

• 論文の詳細を見る

• 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.

• 社団法人電子情報通信学会の論文
• 2009-10-26

著者

• KOZU Toshiaki

  Shimane University

• IGUCHI Toshio

  National Institute of Information and Communications Technology

• OKI Riko

  Earth Observation Research Center, Japan Aerospace Exploration Agency

• KUBOTA Takuji

  Earth Observation Research Center, Japan Aerospace Exploration Agency

• Kubota Takuji

  Earth Observation Research Center Japan Aerospace And Exploration Agency

• Kubota Takuji

  Japan Aerospace And Exploration Agency

• OKI Riko

  Japan Aerospace Exploration Agency, Earth Observation Research Center

• Kubota Takuji

  Earth Observation Research Center Jaxa

• Iguchi Toshio

  Applied Electromagnetic Research Center National Institute Of Information And Communications Technol

• Oki Riko

  Japan Aerospace Exploration Agency/earth Observation Res. Center

• Oki Riko

  Japan Aerospace Exploration Agency Earth Observation Research Center

• IIDA Yasuhisa

  Earth Observation Research Center, JAXA

• IGUCHI Toshio

  Earth Observation Research Center, JAXA

• Iida Yasuhisa

  Earth Observation Research Center Jaxa

• Oki Riko

  Earth Observation Res. Center Japan Aerospace Exploration Agency

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