气候变化领域集成服务门户(CCPortal): Precipitation features of the maritime continent in parameterized and explicit convection models

CCPortal

DOI	10.1175/JCLI-D-19-0416.1
	Precipitation features of the maritime continent in parameterized and explicit convection models
	Argüeso D.; Romero R.; Homar V.
发表日期	2020
ISSN	0894-8755
起始页码	2449
结束页码	2466
卷号	33 期号:6
英文摘要	The Maritime Continent is the largest archipelago in the world and a region of intense convective activity that influences Earth’s general circulation. The region features one of the warmest oceans, very complex topography, dense vegetation, and an intricate configuration of islands, which together result in very specific precipitation characteristics, such as a marked diurnal cycle. Atmospheric models poorly resolve deep convection processes that generate rainfall in the archipelago and show fundamental errors in simulating precipitation. Spatial resolution and the use of convective schemes required to represent subgrid convective circulations have been pointed out as culprits of these errors. However, models running at the kilometer scale explicitly resolve most convective systems and thus are expected to contribute to solve the challenge of accurately simulating rainfall in the Maritime Continent. Here we investigate the differences in simulated precipitation characteristics for different representations of convection, including parameterized and explicit, and at various spatial resolutions. We also explore the vertical structure of the atmosphere in search of physical mechanisms that explain the main differences identified in the rainfall fields across model experiments. Our results indicate that both increased resolution and representing convection explicitly are required to produce a more realistic simulation of precipitation features, such as a correct diurnal cycle both over land and ocean. We found that the structures of deep and shallow clouds are the main differences across experiments and thus they are responsible for differences in the timing and spatial distribution of rainfall patterns in the various convection representation experiments. © 2020 American Meteorological Society
英文关键词	Topography; Complex topographies; Convective activity; Convective systems; General circulation; Maritime Continent; Precipitation characteristics; Realistic simulation; Vertical structures; Rain; atmospheric convection; general circulation model; precipitation (climatology); rainfall; spatial distribution
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171388
作者单位	Meteorology Group, Physics Department, University of the Balearic Islands, Palma, Spain
推荐引用方式 GB/T 7714	Argüeso D.,Romero R.,Homar V.. Precipitation features of the maritime continent in parameterized and explicit convection models[J],2020,33(6).
APA	Argüeso D.,Romero R.,&Homar V..(2020).Precipitation features of the maritime continent in parameterized and explicit convection models.Journal of Climate,33(6).
MLA	Argüeso D.,et al."Precipitation features of the maritime continent in parameterized and explicit convection models".Journal of Climate 33.6(2020).