| DOI: | 10.1175/JCLI-D-16-0684.1
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| Scopus记录号: | 2-s2.0-85022346634
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| 论文题名: | Climatological characteristics of typical daily precipitation |
| 作者: | Pendergrass A.G.; Deser C.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2017
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| 卷: | 30, 期:15 | | 起始页码: | 5985
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| 结束页码: | 6003
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| 语种: | 英语
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| Scopus关键词: | Climatology
; Earth atmosphere
; Precipitation (chemical)
; Rain
; Daily precipitations
; Frequency distributions
; Geographical patterns
; Model evaluation
; Precipitation products
; Satellite observations
; Seasonal variation
; Total precipitation
; Precipitation (meteorology)
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| 英文摘要: | Precipitation is often quantified by the amount that falls over a given period of time but not the rate at which most of it falls or the rate associated with the most frequent events. Here, three metrics are introduced to distill salient characteristics of typical daily precipitation accumulation based on the full distribution of rainfall: rain amount peak (the rain rate at which the most rain falls), rain frequency peak (the most frequent nonzero rain rate), and rain amount width (a measure of the variability of typical precipitation accumulation). These metrics are applied to two observational datasets to describe the climatology of typical daily precipitation accumulation: GPCP 1° daily (October 1996-October 2015) and TMPA 3B42 (January 1998-October 2015). Results show that the rain frequency peak is similar to total rainfall in terms of geographical pattern and seasonal cycle and varies inversely with rain amount width. In contrast, the rain amount peak varies distinctly, reaching maxima on the outer edges of the regions of high total precipitation, and with less seasonal variation. Despite that GPCP and TMPA 3B42 are both merged satellite-gauge precipitation products, they show substantial differences. In particular, the rain amount peak and rain amount width are uniformly greater in TMPA 3B42 compared to GPCP, and there are large discrepancies in their rain frequency distributions (peak and width). Issues relating to model evaluation are highlighted using CESM1 as an illustrative example and underscore the need for observational datasets incorporating measurements of light rain. © 2017 American Meteorological Society. |
| 资助项目: | DOE, U.S. Department of Energy
; NASA, National Aeronautics and Space Administration
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/48803
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| Appears in Collections: | 气候减缓与适应
气候变化与战略
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作者单位: | National Center for Atmospheric Research, Boulder, CO, United States
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| Recommended Citation: | |
Pendergrass A.G.,Deser C.. Climatological characteristics of typical daily precipitation[J]. Journal of Climate,2017-01-01,30(15)
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