气候变化领域集成服务门户(CCPortal): Response of Indian monsoon to increase of resolution in NCAR-CAM5

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DOI	10.1016/j.atmosres.2019.01.015
	Response of Indian monsoon to increase of resolution in NCAR-CAM5
	Anand A.; Bhowmick M.; Mishra S.K.; Sahany S.; Reddy Telukuntla C.V.
发表日期	2019
ISSN	0169-8095
起始页码	12
结束页码	26
卷号	221
英文摘要	Effects of increase in horizontal resolution (from 2°, to 1° and 0.5°) in simulating Indian summer monsoon (ISM) in Community Atmosphere Model version 5 (CAM5) are reported herein. Various parameters — temperature, rainfall, winds, surface evaporation, precipitable water, specific humidity, and clouds — of the model simulations are examined with respect to observations {India Meteorological Department (IMD) and Tropical Rainfall Measuring Mission (TRMM) data for precipitation and Modern-Era Retrospective analysis for Research and Applications (MERRA) products for rest of the variables}. With increase in horizontal resolution overall improvement in majority of surface driven parameters like surface air temperature, surface specific humidity, and low-level winds is observed that highlights the importance of better representation of orography. Over the Indian subcontinent and surrounding oceans, rainfall is overestimated due to the overestimation of the large-scale precipitation in the model, which significantly gets alleviated with increase in resolution. Overall, seasonal mean features of ISM show significant improvements, which are likely to further improve by representing finer spatial features with increase in resolution. However, some aspects of its temporal variations — seasonal, intraseasonal, and diurnal variations — of monsoon rainfall do not show much improvement with increase in resolution, suggesting that traditional physics parameterizations do not work well at high resolution and hence there is a need for improvement in model physics. © 2019 Elsevier B.V.
英文关键词	CAM; Community Earth System Model; GCM; High resolution; Horizontal resolution; Indian summer monsoon
语种	英语
scopus关键词	Atmospheric temperature; Atmospheric thermodynamics; Cams; Rain; Community atmosphere model; Earth system model; High resolution; Horizontal resolution; Indian summer monsoon; Large-scale precipitation; Research and application; Tropical rainfall measuring missions; Rain gages; air temperature; atmospheric modeling; computer simulation; image resolution; monsoon; numerical model; orography; parameterization; surface temperature; temporal variation; TRMM; weather forecasting; India
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/161996
作者单位	Centre for Atmospheric Sciences, IIT Delhi, India; Department of Civil Engineering, IIT Delhi, India
推荐引用方式 GB/T 7714	Anand A.,Bhowmick M.,Mishra S.K.,et al. Response of Indian monsoon to increase of resolution in NCAR-CAM5[J],2019,221.
APA	Anand A.,Bhowmick M.,Mishra S.K.,Sahany S.,&Reddy Telukuntla C.V..(2019).Response of Indian monsoon to increase of resolution in NCAR-CAM5.Atmospheric Research,221.
MLA	Anand A.,et al."Response of Indian monsoon to increase of resolution in NCAR-CAM5".Atmospheric Research 221(2019).