气候变化领域集成服务门户(CCPortal): Elevation-Dependent Warming Over the Tibetan Plateau From an Ensemble of CORDEX-EA Regional Climate Simulations

CCPortal

DOI	10.1029/2020JD033997
	Elevation-Dependent Warming Over the Tibetan Plateau From an Ensemble of CORDEX-EA Regional Climate Simulations
	Niu X.; Tang J.; Chen D.; Wang S.; Ou T.
发表日期	2021
ISSN	2169897X
卷号	126 期号:9
英文摘要	Under the Coordinated Regional Climate Downscaling Experiments-East Asia (CORDEX-EA-II), the outputs from two regional climate models (RCMs) driven by four global climate models (GCMs) are used to investigate the characteristics and possible mechanisms of the projected elevation-dependent warming (EDW) over the Tibetan Plateau (TP) under the Representative Concentration Pathway emission scenario 8.5 (RCP8.5). Results show that widespread warming over the TP is projected with considerable disagreements in warming intensity and the maximum warming center among RCMs. The largest spread in the surface air temperature (Tas) projections is found above 5,000 m, indicating that a large uncertainty exists over the higher elevations. A marked EDW signal over the TP is simulated under the RCP 8.5 by the multi-RCM ensemble mean for all seasons, particularly in autumn. Based on the analysis of the surface energy budget, it is found that the surface albedo feedback (SAF) is the primary contributor to EDW and acts as the main source of uncertainty in EDW projections among RCMs. The downward longwave radiation (DLW) is found to be the dominant factor in regulating Tas change over the TP, and its contribution to EDW is model-dependent. Furthermore, the structure and magnitude of projected EDW are sensitive to the RCM physics and driving GCM, as they can alter the projections of snow cover and albedo, which modulate the simulated SAF and its effect on EDW. Additionally, RegCM4 shows a higher sensitivity to the anthropogenic greenhouse forcing than WRF, evidenced by the larger temperature projections and stronger EDW signal in RegCM4. © 2021. The Authors.
英文关键词	CORDEX-EA; elevation-dependent warming; surface albedo feedback; temperature projections; the Tibetan Plateau
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185269
作者单位	Department of Atmospheric Science, School of Environmental Studies, China University of Geosciences, Wuhan, China; Institute for Climate and Global Change Research & School of Atmospheric Sciences, Nanjing University, Nanjing, China; Department of Earth Sciences, Regional Climate Group, University of Gothenburg, Gothenburg, Sweden
推荐引用方式 GB/T 7714	Niu X.,Tang J.,Chen D.,et al. Elevation-Dependent Warming Over the Tibetan Plateau From an Ensemble of CORDEX-EA Regional Climate Simulations[J],2021,126(9).
APA	Niu X.,Tang J.,Chen D.,Wang S.,&Ou T..(2021).Elevation-Dependent Warming Over the Tibetan Plateau From an Ensemble of CORDEX-EA Regional Climate Simulations.Journal of Geophysical Research: Atmospheres,126(9).
MLA	Niu X.,et al."Elevation-Dependent Warming Over the Tibetan Plateau From an Ensemble of CORDEX-EA Regional Climate Simulations".Journal of Geophysical Research: Atmospheres 126.9(2021).