DOI: 10.1002/2016GL069909
论文题名: Climatology of contribution-weighted tropical rain rates based on TRMM 3B42
作者: Venugopal V. ; Wallace J.M.
刊名: Geophysical Research Letters
ISSN: 0094-8573
EISSN: 1944-8304
出版年: 2016
卷: 43, 期: 19 起始页码: 10439
结束页码: 10447
语种: 英语
英文关键词: Contribution-weighted spectrum
; TRMM
; Tropical rain rate
Scopus关键词: Climatology
; Geographical distribution
; Precipitation (meteorology)
; Rain gages
; Tropics
; Contribution-weighted spectrum
; Precipitation radar
; Spatial patterns
; Spatial resolution
; Temporal resolution
; TRMM
; Tropical rain
; Tropical rainfall measuring missions
; Rain
英文摘要: The climatology of annual mean tropical rain rate is investigated based on merged Tropical Rainfall Measuring Mission (TRMM) 3B42 data. At 0.25° × 0.25° spatial resolution, and 3-hourly temporal resolution, half the rain is concentrated within only ∼1% of the area of the tropics at any given instant. When plotted as a function of logarithm of rain rate, the cumulative contribution of rate-ranked rain occurrences to the annual mean rainfall in each grid box is S shaped and its derivative, the contribution-weighted rain rate spectrum, is Gaussian shaped. The 50% intercept of the cumulative contribution R50 is almost equivalent to the contribution-weighted mean logarithmic rain rate (Formula presented.) based on all significant rain occurrences. The spatial patterns of R50 and (Formula presented.) are similar to those obtained by mapping the fraction of the annual accumulation explained by rain occurrences with rates above various specified thresholds. The geographical distribution of R50 confirms the existence of patterns noted in prior analyses based on TRMM precipitation radar data and reveals several previously unnoticed features. ©2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84990909315&doi=10.1002%2f2016GL069909&partnerID=40&md5=cfaa68a31f85b6719dbefbbbcb300916
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9536
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Centre for Atmospheric and Oceanic Sciences, & Divecha Centre for Climate Change, Indian Institute of Science, Bengaluru, India
Recommended Citation:
Venugopal V.,Wallace J.M.. Climatology of contribution-weighted tropical rain rates based on TRMM 3B42[J]. Geophysical Research Letters,2016-01-01,43(19).