Very high resolution precipitation climatologies from the Tropical Rainfall Measuring Mission precipitation radar

被引：94
作者：
Nesbitt, Stephen W. [1 ]
Anders, Alison M. [2 ]
机构：
[1] Univ Illinois, Dept Atmospher Sci, Urbana, IL 61801 USA
[2] Univ Illinois, Dept Geol, Urbana, IL 61801 USA
来源：
GEOPHYSICAL RESEARCH LETTERS | 2009年 / 36卷
基金：
美国国家科学基金会;
关键词：
WESTERN GHAT MOUNTAINS; LOW-LEVEL FLOW; SUMMER MONSOON; OFFSHORE CONVECTION; PROFILING ALGORITHM; SAMPLING ERROR; TRMM; MODEL;
D O I：
10.1029/2009GL038026
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
To investigate processes related to the interaction of topography and precipitation, a tropics-wide (+/- 36 degrees latitude) high resolution (0.1 degrees) ten year (1998-2007) rainfall climatology is presented from the Tropical Rainfall Measuring Mission (TRMM) precipitation radar (PR) using algorithm 2A25 version 6 near-surface rain. We observe a tight coupling between precipitation and topography with distinct precipitation-topography relationships present in northwest South America and South Asia. An error model is developed by subsampling the TRMM Multi-satellite Precipitation Analysis as sampled by the PR. The error model predicts observed sampling error as a function of resolution, rain rate and sampling frequency with an r(2) of 0.82. This error model indicates that the precipitation climatology at 0.1 degrees resolution does resolve precipitation gradients in regions with large average daily rain totals including the Andes, Western Ghats, and Himalaya. Citation: Nesbitt, S. W., and A. M. Anders (2009), Very high resolution precipitation climatologies from the Tropical Rainfall Measuring Mission precipitation radar, Geophys. Res. Lett., 36, L15815, doi: 10.1029/2009GL038026.
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页数：5
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