DOI: 10.1007/s00382-013-1913-7
Scopus记录号: 2-s2.0-84897576235
论文题名: Climate variability attributable to terrestrial and oceanic forcing in the NCAR CAM3-CLM3 Models
作者: Sun S. ; Wang G.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 42, 期: 2017-07-08 起始页码: 2067
结束页码: 2078
语种: 英语
英文关键词: Climate variability
; Land-atmosphere interactions
; Soil moisture feedback
; Vegetation feedback
英文摘要: Based on numerical experiments using the NCAR CAM3-CLM3 models, this paper examines the impact of soil moisture, vegetation, and sea surface temperature (SST) on the inter-annual variability of climate over land. For each element, two experiments are carried out, with the inter-annual variability preserved in one experiment and eliminated in the other. Differences in the standard deviation of the precipitation and air temperature at the inter-annual time scale are used to quantify the impacts from soil moisture dynamics, vegetation dynamics, and oceanic forcing. The impact of oceanic forcing is mainly limited to the Tropics, with the strongest signal in the equatorial zone, and moisture convergence is the key linkage between SST forcing and tropical precipitation. Soil moisture plays a significant role in climate variability during the rainy seasons of all semi-arid regions (which is consistent with many previous studies), and during the dry seasons of the humid Amazon. Evapotranspiration is identified as the main mechanism linking precipitation variability to soil moisture. Amazon is the only region where vegetation dynamics has a significant influence on precipitation variability. However, the impact of vegetation dynamics on temperature is strong over the US Great Plains in all four seasons and in the Amazon region during the dry and dry-to-wet transition seasons. © 2013 Springer-Verlag Berlin Heidelberg. 资助项目: NSF, National Oceanic and Atmospheric Administration
; NOAA, National Oceanic and Atmospheric Administration
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54627
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Civil and Environmental Engineering and Center for Environmental Sciences and Eng., University of Connecticut, Storrs, CT, United States; University of Chicago, Chicago, IL, United States
Recommended Citation:
Sun S.,Wang G.. Climate variability attributable to terrestrial and oceanic forcing in the NCAR CAM3-CLM3 Models[J]. Climate Dynamics,2014-01-01,42(2017-07-08)