DOI: 10.1175/JCLI-D-16-0688.1
Scopus记录号: 2-s2.0-85018966017
论文题名: A 10-year austral summer climatology of observed and modeled intraseasonal, mesoscale, and diurnal variations over the maritime continent
作者: Vincent C.L. ; Lane T.P.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2017
卷: 30, 期: 10 起始页码: 3807
结束页码: 3828
语种: 英语
Scopus关键词: Boundary layers
; Budget control
; Moisture
; Precipitation (chemical)
; Rain
; Tropics
; Diurnal effects
; Diurnal precipitation
; Madden-Julian oscillation
; Maritime Continent
; Meso-scale models
; Mesoscale model simulation
; Satellite precipitation estimates
; Sea breeze circulation
; Climatology
英文摘要: The Maritime Continent is one of the wettest regions on the planet and has been shown to be important for global budgets of heat and moisture. Convection in the region, however, varies on several interrelated scales, making it difficult to quantify the precipitation climate and understand the key processes. For example, the diurnal cycle in precipitation over the land varies substantially according to the phase of the Madden-Julian oscillation (MJO), and the diurnal precipitation cycle over the water is coupled to that over the land, in some cases for distances of over 1000 km from the coast. Here, a 10-yr austral summer climatology of diurnal and MJO-scale variations in rain rate over the land and sea over the Maritime Continent is presented. The climatology is based on mesoscale model simulations with a horizontal grid length of 4 km and satellite precipitation estimates. The amplitude of the observed diurnal precipitation cycle is shown to reach a maximum just prior to the MJO active phase, with a weaker secondary maximum after the MJO active phase. Although these two maxima also exist in the modeled diurnal precipitation cycle, there is less difference between the maxima before and after the MJO active phase than in the observations. The modeled sea-breeze circulation is also shown to possess approximately equal maxima just before and just after the MJO active period, suggesting that the asymmetry of the diurnal precipitation cycle about the MJO active period is related more to moisture availability than kinematic forcing. © 2017 American Meteorological Society. 资助项目: ARC, Australian Research Council
; NCI, National Computational Infrastructure
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49695
Appears in Collections: 气候变化事实与影响
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作者单位: School of Earth Sciences, The University of Melbourne, Melbourne, VIC, Australia; ARC Centre of Excellence for Climate System Science, The University of Melbourne, Melbourne, VIC, Australia
Recommended Citation:
Vincent C.L.,Lane T.P.. A 10-year austral summer climatology of observed and modeled intraseasonal, mesoscale, and diurnal variations over the maritime continent[J]. Journal of Climate,2017-01-01,30(10)