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DOI | 10.1007/s00382-018-4411-0 |
Importance of the resolution of surface topography vis-a-vis atmospheric and surface processes in the simulation of the climate of Himalaya-Tibet highland | |
Jain, Shipra; Mishra, Saroj K.; Salunke, Popat; Sahany, Sandeep | |
2019-04-01 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 52页码:4735-4748 |
文章类型 | Article |
语种 | 英语 |
国家 | India |
英文摘要 | As Himalaya-Tibet Highland (HTH), a spatially extensive and complex terrain, plays influential roles in the regional and global climate, its representation in climate models is a decisive factor in climate simulations. It is established that higher spatial resolution improves the simulation of several seasonal mean features over this region, but how much improvement comes from the better representation of surface topography and how much comes from the better modeling of the atmospheric and surface processes are still not clear. To understand this, three sets of 6-member ensemble simulations are conducted using the NCAR Community Atmosphere Model version 5.1 (CAM5.1) at: (1) 1.9 degrees x2.5 degrees resolution (Coarse), (2) 0.47 degrees x0.63 degrees resolution (Fine), and (3) topography is prescribed at the Coarse resolution and rest of the model processes are computed at the Fine resolution (Hybrid). The Coarse resolution overlooks most of the intricate features of the topography with a severe bias of similar to 1-2km but Fine resolution does a much better job in their representations. Surface air temperatures are found to be strongly dependent on the resolution of topography and therefore it is desirable to resolve topography in models for the realistic simulation and projection of temperatures. Rest of the variables, viz. seasonal mean, seasonal cycle and probability distribution of precipitation; tropospheric temperature and moisture; Tibetan anticyclone, show remarkable improvements with the increase in resolution of the atmospheric and surface processes. Influence of the resolution of topography is found to be limited to the model levels adjacent to the surface, and for higher model levels, the resolution of the atmospheric and surface processes is noted to play a more crucial role. |
英文关键词 | Himalaya Tibetan Plateau (HTP) Climate modeling NCAR-CAM Resolution Topography Monsoon modeling |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000467187600051 |
WOS关键词 | HORIZONTAL RESOLUTION ; MODEL ; SENSITIVITY ; PLATEAU ; PARAMETERIZATION ; CONVECTION ; MONSOON ; DATASET |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/181921 |
专题 | 气候变化 |
作者单位 | Indian Inst Technol Delhi, Ctr Atmospher Sci, New Delhi 110016, India |
推荐引用方式 GB/T 7714 | Jain, Shipra,Mishra, Saroj K.,Salunke, Popat,et al. Importance of the resolution of surface topography vis-a-vis atmospheric and surface processes in the simulation of the climate of Himalaya-Tibet highland[J]. CLIMATE DYNAMICS,2019,52:4735-4748. |
APA | Jain, Shipra,Mishra, Saroj K.,Salunke, Popat,&Sahany, Sandeep.(2019).Importance of the resolution of surface topography vis-a-vis atmospheric and surface processes in the simulation of the climate of Himalaya-Tibet highland.CLIMATE DYNAMICS,52,4735-4748. |
MLA | Jain, Shipra,et al."Importance of the resolution of surface topography vis-a-vis atmospheric and surface processes in the simulation of the climate of Himalaya-Tibet highland".CLIMATE DYNAMICS 52(2019):4735-4748. |
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