气候变化领域集成服务门户(CCPortal): Air pollution slows down surface warming over the Tibetan Plateau

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DOI	10.5194/acp-20-881-2020
	Air pollution slows down surface warming over the Tibetan Plateau
	Jia A.; Liang S.; Wang D.; Jiang B.; Zhang X.
发表日期	2020
ISSN	16807316
起始页码	881
结束页码	899
卷号	20 期号:2
英文摘要	The Tibetan Plateau (TP) plays a vital role in regional and global climate change. The TP has been undergoing significant surface warming starting from 1850, with an air temperature increase of 1.39K and surface solar dimming resulting from decreased incident solar radiation. The causes and impacts of solar dimming on surface warming are unclear. In this study, long-term (from 1850 to 2015) surface downward radiation datasets over the TP are developed by integrating 18 Coupled Model Intercomparison Project phase 5 (CMIP5) models and satellite products. The validation results from two ground measurement networks show that the generated downward surface radiation datasets have a higher accuracy than the mean of multiple CMIP5 datasets and the fused datasets of reanalysis and satellite products. After analyzing the generated radiation data with four air temperature datasets, we found that downward shortwave radiation (DSR) remained stable before 1950 and then declined rapidly at a rate of -0:53Wm-2 per decade, and that the fastest decrease in DSR occurs in the southeastern TP. Evidence from site measurements, satellite observations, reanalysis, and model simulations suggested that the TP solar dimming was primarily driven by increased anthropogenic aerosols. The TP solar dimming is stronger in summer, at the same time that the increasing magnitude of the surface air temperature is the smallest. The cooling effect of solar dimming offsets surface warming on the TP by 0:80±0:28K (48:6±17:3 %) in summer since 1850. It helps us understand the role of anthropogenic aerosols in climate warming and highlights the need for additional studies to be conducted to quantify the influence of air pollution on regional climate change over the TP. © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.
关键词	air temperature atmospheric pollution climate change CMIP shortwave radiation solar radiation warming China Qinghai-Xizang Plateau
语种	英语
来源机构	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/132280
推荐引用方式 GB/T 7714	Jia A.,Liang S.,Wang D.,et al. Air pollution slows down surface warming over the Tibetan Plateau[J]. Atmospheric Chemistry and Physics,2020,20(2).
APA	Jia A.,Liang S.,Wang D.,Jiang B.,&Zhang X..(2020).Air pollution slows down surface warming over the Tibetan Plateau.,20(2).
MLA	Jia A.,et al."Air pollution slows down surface warming over the Tibetan Plateau".20.2(2020).