| DOI: | 10.1016/j.atmosres.2019.01.015
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| Scopus记录号: | 2-s2.0-85060685614
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| 论文题名: | Response of Indian monsoon to increase of resolution in NCAR-CAM5 |
| 作者: | Anand A.; Bhowmick M.; Mishra S.K.; Sahany S.; Reddy Telukuntla C.V.
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| 刊名: | Atmospheric Research
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| ISSN: | 1698095
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| 出版年: | 2019
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| 卷: | 221 | | 起始页码: | 12
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| 结束页码: | 26
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| 语种: | 英语
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| 英文关键词: | CAM
; Community Earth System Model
; GCM
; High resolution
; Horizontal resolution
; Indian summer monsoon
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| 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
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| 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. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/122294
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Centre for Atmospheric Sciences, IIT Delhi, India; Department of Civil Engineering, IIT Delhi, India
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| Recommended Citation: | |
Anand A.,Bhowmick M.,Mishra S.K.,et al. Response of Indian monsoon to increase of resolution in NCAR-CAM5[J]. Atmospheric Research,2019-01-01,221
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