气候变化领域集成服务门户(CCPortal): Contrast patterns and trends of lapse rates calculated from near-surface air and land surface temperatures in China from 1961 to 2014

CCPortal

DOI	10.1016/j.scib.2020.04.001
	Contrast patterns and trends of lapse rates calculated from near-surface air and land surface temperatures in China from 1961 to 2014
	He Y.; Wang K.
发表日期	2020
ISSN	20959273
起始页码	1217
结束页码	1224
卷号	65 期号:14
英文摘要	The near-surface lapse rate reflects the atmospheric stability above the surface. Lapse rates calculated from land surface temperature (γTs) and near-surface air temperature (γTa) have been widely used. However, γTs and γTa have different sensitivity to local surface energy balance and large-scale energy transport and therefore they may have diverse spatial and temporal variability, which has not been clearly illustrated in existing studies. In this study, we calculated and compared γTa and γTs at ~ 2200 stations over China from 1961 to 2014. This study finds that γTa and γTs have a similar multiyear national average (0.53 °C/100 m) and seasonal cycle. Nevertheless, γTs shows steeper multiyear average than γTa at high latitudes, and γTs in summer is steeper than γTa, especially in Northwest China. The North China shows the shallowest γTa and γTs, then inhibiting the vertical diffusion of air pollutants and further reducing the lapse rates due to accumulation of pollutants. Moreover, the long-term trend signs for γTa and γTs are opposite in northern China. However, the trends in γTa and γTs are both negative in Southwest China and positive in Southeast China. Surface incident solar radiation, surface downward longwave radiation and precipitant frequency jointly can account for 80% and 75% of the long-term trends in γTa and γTs in China, respectively, which provides an explanation of trends of γTa and γTs from perspective of surface energy balance. © 2020 Science China Press
关键词	Climatic factor Land surface temperature Lapse rate Long-term trend Near-surface air temperature
英文关键词	Atmospheric temperature; Energy balance; Incident solar radiation; Interfacial energy; Pollution; Surface measurement; Surface properties; Atmospheric stability; Contrast patterns; Energy transport; Long-wave radiation; Near surface air temperature; Southwest China; Spatial and temporal variability; Vertical diffusion; Land surface temperature
语种	英语
来源期刊	Science Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/207055
作者单位	State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Global Change and Earth System Science, Beijing Normal University, Beijing, 100875, China
推荐引用方式 GB/T 7714	He Y.,Wang K.. Contrast patterns and trends of lapse rates calculated from near-surface air and land surface temperatures in China from 1961 to 2014[J],2020,65(14).
APA	He Y.,&Wang K..(2020).Contrast patterns and trends of lapse rates calculated from near-surface air and land surface temperatures in China from 1961 to 2014.Science Bulletin,65(14).
MLA	He Y.,et al."Contrast patterns and trends of lapse rates calculated from near-surface air and land surface temperatures in China from 1961 to 2014".Science Bulletin 65.14(2020).