DOI: 10.1016/j.scib.2020.04.001
论文题名: Contrast patterns and trends of lapse rates calculated from near-surface air and land surface temperatures in China from 1961 to 2014
作者: He Y. ; Wang K.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期: 14 起始页码: 1217
结束页码: 1224
语种: 英语
中文关键词: 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
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 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169911
Appears in Collections: 气候变化与战略
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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
Recommended Citation:
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]. Science Bulletin,2020-01-01,65(14)