globalchange  > 气候减缓与适应
DOI: 10.1007/s10584-017-2025-x
Scopus记录号: 2-s2.0-85025089003
论文题名:
Relative impacts of increased greenhouse gas concentrations and land cover change on the surface climate in arid and semi-arid regions of China
作者: Xu Z.; Yang Z.-L.
刊名: Climatic Change
ISSN: 0165-0009
EISSN: 1573-1480
出版年: 2017
卷: 144, 期:3
起始页码: 491
结束页码: 503
语种: 英语
英文关键词: Extreme events ; Precipitation ; Precipitation efficiency ; Temperature
Scopus关键词: Arid regions ; Climate models ; Efficiency ; Global warming ; Greenhouse gases ; Precipitation (chemical) ; Temperature ; Weather forecasting ; Arid and semi-arid regions ; Dynamical downscaling ; Extreme events ; Land use and land cover change ; Lateral boundary conditions ; Precipitation efficiency ; Surface air temperatures ; Weather research and forecasting models ; Climate change ; air temperature ; anthropogenic source ; arid region ; boundary condition ; climate modeling ; concentration (composition) ; downscaling ; efficiency measurement ; extreme event ; global warming ; greenhouse gas ; land cover ; land use ; precipitation (climatology) ; semiarid region ; China
英文摘要: Four dynamical downscaling simulations are performed with different combinations of land cover maps and greenhouse gas (GHG) levels using the Weather Research and Forecasting (WRF) model nested in the Community Earth System (CESM) model. A pseudo-global warming downscaling method is used to effectively separate the anthropogenic signals from the internal noises of climate models. Based on these simulations, we investigate the impacts of anthropogenic increase in GHG concentrations and land use and land cover change (LULCC) on mean climate and extreme events in the arid and semi-arid regions of China. The results suggest that increased GHG concentrations lead to significant increases in the surface air temperature at 2 m height (T2m) by 1–1.5 °C and greater increase in the warm day temperature (TX90p) than the cold day temperature (TX10p) in the arid and semi-arid regions. Moreover, precipitation increases by 30–50% in the arid region in cold season (November to March) due to the GHG-induced increase in moisture recycling rate and precipitation efficiency. LULCC leads to significant decreases in the T2m, TX90p, and TX10p by approximately 0.3 °C. The regional LULCC accounts for 66 and 68% decrease in T2m in warm and cold seasons, respectively. The rest changes in T2m results from the changes in lateral boundary condition induced by the global LULCC. In response to LULCC, both the warm and cold day temperatures show a significant decrease in cold seasons, which primarily results from the regional LULCC. LULCC-induced changes in precipitation are generally weak in the arid and semi-arid regions of China. © 2017, Springer Science+Business Media B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83899
Appears in Collections:气候减缓与适应
气候变化事实与影响

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作者单位: CAS Key Laboratory of Regional Climate-Environment for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, 40 Hua Yan Li, Qi Jia Huo Zi, Beijing, China; Department of Geological Sciences, The Jackson School of Geosciences, The University of Texas at Austin, Austin, TX, United States

Recommended Citation:
Xu Z.,Yang Z.-L.. Relative impacts of increased greenhouse gas concentrations and land cover change on the surface climate in arid and semi-arid regions of China[J]. Climatic Change,2017-01-01,144(3)
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