Diurnal phase of late-night against late-afternoon of stratiform and convective precipitation in summer southern contiguous ChinaReportar como inadecuado




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Climate Dynamics

, Volume 35, Issue 4, pp 567–576

First Online: 21 April 2009Received: 27 December 2008Accepted: 25 March 2009

Abstract

Using the tropical rainfall measuring mission TRMM Precipitation Radar PR observations combined with the surface rain gauge data during 1998–2006, the robust diurnal features of summer stratiform and convective precipitation over the southern contiguous China are revealed by exploring the diurnal variations of rain rate and precipitation profile. The precipitation over the southern contiguous China exhibits two distinguishing diurnal phases: late-night 2200–0600 LST and late-afternoon 1400–2200 LST, dependent on the location, precipitation type and duration time. Generally, the maximum rain rate and the highest profile of stratiform precipitation occur in the late-afternoon late-night over the southeastern southwestern China, while most of the stratiform short-duration rain rate tends to present late-afternoon peaks over the southern China. For convective precipitation, the maximum rain rate and the highest profile occur in the late-afternoon over most of the southern contiguous China, while the convective long-duration rain rate exhibits late-night peaks over the southwestern China. Without regional dependence, the convective precipitation exhibits much larger amplitude of diurnal variations in both near surface rain rate and vertical extension compared with stratiform precipitation and the convective rain top rises most rapidly between noon and afternoon. However, there are two distinctive sub-regions. The diurnal phases of precipitation there are very weakly dependent on precipitation type and duration time. Over the eastern periphery of the Tibetan Plateau, the maximum rain rate and the highest profile of either convective or stratiform precipitation occur in the late-night. Over the southeastern coastal regions, both the near surface rain rate and rain top of convective and stratiform precipitation peak in the late-afternoon.

KeywordsDiurnal cycle Stratiform precipitation Convective precipitation Rainfall duration  Download fulltext PDF



Autor: Rucong Yu - Weihua Yuan - Jian Li - Yunfei Fu

Fuente: https://link.springer.com/







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