globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-016-3168-6
Scopus记录号: 2-s2.0-84969895381
论文题名:
Quantification of the relative role of land-surface processes and large-scale forcing in dynamic downscaling over the Tibetan Plateau
作者: Gao Y.; Xiao L.; Chen D.; Chen F.; Xu J.; Xu Y.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2017
卷: 48, 期:2017-05-06
起始页码: 1705
结束页码: 1721
语种: 英语
英文关键词: DDM ; Precipitation ; Temperature ; Tibet Plateau
英文摘要: Dynamical downscaling modeling (DDM) is important to understand regional climate change and develop local mitigation strategies, and the accuracy of DDM depends on the physical processes involved in the regional climate model as well as the forcing datasets derived from global models. This study investigates the relative role of the land surface schemes and forcing datasets in the DDM over the Tibet Plateau (TP), a region complex in topography and vulnerable to climate change. Three Weather Research and Forecasting model dynamical downscaling simulations configured with two land surface schemes [Noah versus Noah with multiparameterization (Noah-MP)] and two forcing datasets are performed over the period of 1980–2005. The downscaled temperature and precipitation are evaluated with observations and inter-compared regarding temporal trends, spatial distributions, and climatology. Results show that the temporal trends of the temperature and precipitation are determined by the forcing datasets, and the forcing dataset with the smallest trend bias performs the best. Relative to the forcing datasets, land surface processes play a more critical role in the DDM over the TP due to the strong heating effects on the atmospheric circulation from a vast area at exceptionally high elevations. By changing the vertical profiles of temperature in the atmosphere and the horizontal patterns of moisture advection during the monsoon seasons, the land surface schemes significantly regulate the downscaled temperature and precipitation in terms of climatology and spatial patterns. This study emphasizes the selection of land surface schemes is of crucial importance in the successful DDM over the TP. © 2016, Springer-Verlag Berlin Heidelberg.
资助项目: MOST, Ministry of Science and Technology of the People's Republic of China ; NSFC, National Natural Science Foundation of China ; NSFC, National Natural Science Foundation of China ; NSFC, National Natural Science Foundation of China
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53326
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作者单位: Key Laboratory of Land-surface Process and Climate Change in Cold and Arid Regions, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou, Gansu, China; Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden; National Center for Atmospheric Research, Boulder, CO, United States; State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing, China

Recommended Citation:
Gao Y.,Xiao L.,Chen D.,et al. Quantification of the relative role of land-surface processes and large-scale forcing in dynamic downscaling over the Tibetan Plateau[J]. Climate Dynamics,2017-01-01,48(2017-05-06)
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