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首页> 外文期刊>Selected Topics in Applied Earth Observations and Remote Sensing, IEEE Journal of >Precipitation From the Advanced Microwave Scanning Radiometer 2
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Precipitation From the Advanced Microwave Scanning Radiometer 2

机译:来自高级微波扫描辐射计2的降水

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摘要

The Goddard Profiling Algorithm 2010 Version 2 (GPROF2010V2) was adapted for use for the Advanced Microwave Scanning Radiometer 2 (AMSR2) on board the Global Change Observation Mission–Water satellite. This study presents the validation and evaluation of the National Oceanic and Atmospheric Administration’s AMSR2 precipitation product. Rain rates calculated by GROF2010V2 meet mission accuracy requirements, with root–mean-squared error of $1.3 text{mm}{cdot} text{h}^{-1}$ and $3.6 text{mm}{cdot} text{h}^{-1}$ over ocean and land, respectively. In addition to meeting instantaneous rain rate requirements, GPROF2010V2 captures monthly and seasonal precipitation patterns relative to rain gauge analysis. Recurring problems with the algorithm over land surfaces, such as false alarms due to snow cover and surface contamination, are identified. These deficiencies can be mitigated using separate dayight screening procedures and ancillary information on daily snow cover.
机译:戈达德剖析算法2010版本2(GPROF2010V2)适用于全球变化观测任务-水卫星上的高级微波扫描辐射计2(AMSR2)。这项研究提出了对美国国家海洋和大气管理局AMSR2降水产品的验证和评估。由GROF2010V2计算的降雨率符合任务精度要求,均方根误差为$ 1.3文本{mm} {cdot}文本{h} ^ {-1} $和$ 3.6文本{mm} {cdot}文本{h} ^ {-1} $分别超过海洋和陆地。除了满足瞬时降雨率要求外,GPROF2010V2还捕获了与雨量计分析有关的每月和季节性降水模式。识别出该算法在陆地表面上反复出现的问题,例如由于积雪和表面污染引起的误报。可以使用单独的昼/夜筛选程序和每日雪覆盖上的辅助信息来缓解这些不足。

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