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首页> 外文会议>Remote sensing for agriculture, ecosystems, and hydrology XIX >Evaluation of TRMM 3B42V7 Product on Extreme Precipitation Measurements over Peninsular Malaysia
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Evaluation of TRMM 3B42V7 Product on Extreme Precipitation Measurements over Peninsular Malaysia

机译：TRMM 3B42V7产品在马来西亚半岛极端降水测量中的评估

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Climate variability has become a matter worth our attention as this issue has unveiled to the extreme water-related disasters such as flood and drought. Increments in heavy precipitation have happened over the past century and future climate scenarios show that it may alter the recurrence, timing, force, and length of these occasions. Satellite precipitation products (SPPs) could be used as representation of precipitation over a large region. This could be useful for the monitoring of the precipitation pattern as well as extreme events. Nevertheless, application of these products in monitoring extreme precipitation is still limited because insufficiency of quality assessment. This study aims to evaluate the performance of the Tropical Rainfall Measuring Mission (TRMM) Multi-satellite Precipitation Analysis (TMPA) 3B42V7 product in capturing the behavior of extreme precipitation events over Peninsular Malaysia from 2000 to 2015. Four extreme precipitation indices, in two general categories of absolute threshold (R10mm, R20mm and R50mm) and maximum (Rx1d) indices that recommended by the Expert Team on Climate Change Detection and Indices (ETCCDI) were used. General evaluation has shown that the TRMM 3B42V7 product performed good on the measurements of monthly and annual precipitation. In the respect of extreme precipitation measurements, weak to moderate positive correlations were found between the TRMM 3B42 product and rain gauges over Peninsular Malaysia. The TRMM 3B42V7 product overestimated the R10mm and R20mm indices, while an underestimation was found for the R50mm and Rx1d indices.
机译：气候变化已成为我们关注的一个问题，因为该问题已经暴露于与水有关的极端灾害，例如洪水和干旱。过去一个世纪以来，强降水增加了，未来的气候情景表明，这可能会改变这些情况的发生，时间，力量和时间长度。卫星降水产品（SPPs）可以用作大区域降水的代表。这对于监测降水模式以及极端事件可能很有用。然而，由于缺乏质量评估，这些产品在监测极端降水中的应用仍然受到限制。这项研究旨在评估热带降雨测量任务（TRMM）多卫星降水分析（TMPA）3B42V7产品在捕获2000年至2015年马来西亚半岛极端降水事件的行为中的性能。四个极端降水指数，其中两个使用了气候变化检测和指数专家组（ETCCDI）建议的绝对阈值（R10mm，R20mm和R50mm）和最大（Rx1d）类别。综合评估表明，TRMM 3B42V7产品在每月和每年降水量的测量中表现良好。在极端降水量测量方面，在马来西亚半岛的TRMM 3B42产品与雨量计之间发现了弱到中度的正相关。 TRMM 3B42V7产品高估了R10mm和R20mm指数，而R50mm和Rx1d指数却被低估了。

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