Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL073451 |
Microwave retrievals of terrestrial precipitation over snow-covered surfaces: A lesson from the GPM satellite | |
Ebtehaj, A. M.1; Kummerow, C. D.2 | |
2017-06-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Satellites are playing an ever-increasing role in estimating precipitation over remote areas. Improving satellite retrievals of precipitation requires increased understanding of its passive microwave signatures over different land surfaces. Snow-covered surfaces are notoriously difficult to interpret because they exhibit both emission from the land below and scattering from the ice crystals. Using data from the Global Precipitation Measurement (GPM) satellite, we demonstrate that microwave brightness temperatures of rain and snowfall transition from a scattering to an emission regime from summer to winter, due to expansion of less emissive snow cover. Evidence suggests that the combination of low- (10-19 GHz) and high-frequency (89-166 GHz) channels provides the maximum amount of information for snowfall detection. The results demonstrate that, using a multifrequency matching method, the probability of snowfall detection can even be higher than rainfall-chiefly because of the information content of the low-frequency channels that respond to the (near) surface temperature. |
英文关键词 | satellite precipitation snowfall microwaves |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000405854200033 |
WOS关键词 | PASSIVE MICROWAVE ; LAND ; ALGORITHM ; CLASSIFICATION ; INFORMATION ; PARAMETERS ; PRODUCTS ; WATER |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/29160 |
专题 | 气候变化 |
作者单位 | 1.Univ Minnesota, Dept Civil Environm & Geoengn, St Anthony Falls Lab, Minneapolis, MN 55455 USA; 2.Colorado State Univ, Cooperat Inst Res Atmosphere, Dept Atmospher Sci, Ft Collins, CO 80523 USA |
推荐引用方式 GB/T 7714 | Ebtehaj, A. M.,Kummerow, C. D.. Microwave retrievals of terrestrial precipitation over snow-covered surfaces: A lesson from the GPM satellite[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(12). |
APA | Ebtehaj, A. M.,&Kummerow, C. D..(2017).Microwave retrievals of terrestrial precipitation over snow-covered surfaces: A lesson from the GPM satellite.GEOPHYSICAL RESEARCH LETTERS,44(12). |
MLA | Ebtehaj, A. M.,et al."Microwave retrievals of terrestrial precipitation over snow-covered surfaces: A lesson from the GPM satellite".GEOPHYSICAL RESEARCH LETTERS 44.12(2017). |
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