DOI: 10.1007/s00382-016-3317-y
Scopus记录号: 2-s2.0-84982284271
论文题名: Resolution dependence of the simulated precipitation and diurnal cycle over the Maritime Continent
作者: Li Y. ; Jourdain N.C. ; Taschetto A.S. ; Gupta A.S. ; Argüeso D. ; Masson S. ; Cai W.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2017
卷: 48, 期: 2017-11-12 起始页码: 4009
结束页码: 4028
语种: 英语
英文关键词: Diurnal cycle
; Horizontal resolution
; Land-sea breeze
; Maritime Continent
; Prevailing wind
; Regional coupled model
英文摘要: The Maritime Continent is a region of intense rainfall characterised by a strong diurnal cycle. This study investigates the sensitivity of rainfall characteristics to resolution in a coupled regional climate model configuration, in particular focusing on processes that modulate the diurnal cycle. Model biases are resolution dependent. Increasing resolution from 3/4° to 1/4° improves the mean state sea surface temperature and precipitation biases. However, at higher resolutions (1/12°) rainfall becomes too strong in most areas. Daily maximum rainfall is simulated about 2–4 h earlier than in observations over both the land and the ocean, with only small improvements over high topography at higher resolution. We develop a technique to examine cross-coastal processes associated with the rainfall diurnal cycle along all coastlines. This is used to investigate the sensitivity of the diurnal cycle to resolution and to the direction of the prevailing wind. During offshore prevailing winds, most land rainfall is confined near the coastline and associated with a shallow land-sea breeze circulation at all resolution (though rainfall partly develops directly inland at 1/12°). During onshore prevailing winds, rainfall propagates from the coastline to the island interior at 1/4° and 1/12°, whereas it appears directly over the island interior at 3/4°, and this is associated with a deep convective cell across the coastline for all resolutions. Oceanic rainfall propagates far offshore during offshore prevailing winds at all resolutions, whereas it tends to remain confined near the coastline under onshore prevailing winds condition, particularly at higher resolution. © 2016, Springer-Verlag Berlin Heidelberg.
资助项目: ANR, Agence Nationale de la Recherche
; CSIRO, Commonwealth Scientific and Industrial Research Organisation
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53226
Appears in Collections: 过去全球变化的重建
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作者单位: Climate Change Research Centre (CCRC) and ARC Centre of Excellence for Climate System Science (ARCCSS), University of New South Wales, Sydney, Australia; Centre National de la Recherche Scientifique, LGGE, Grenoble, France; Univ. Grenoble Alpes, LGGE, Grenoble, France; Department of Atmospheric Sciences, SOEST, University of Hawai’i at Mānoa, Honolulu, HI, United States; LOCEAN Laboratory, Sorbonne Univ. (UPMC, Univ. Paris 06)-CNRS-IRD-MNHN, IPSL, Paris, France; CSIRO Oceans and Atmosphere, Aspendale, Australia
Recommended Citation:
Li Y.,Jourdain N.C.,Taschetto A.S.,et al. Resolution dependence of the simulated precipitation and diurnal cycle over the Maritime Continent[J]. Climate Dynamics,2017-01-01,48(2017-11-12)