globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.atmosres.2018.04.029
Scopus记录号: 2-s2.0-85047257878
论文题名:
Wintertime cooling and a potential connection with transported aerosols in Hong Kong during recent decades
作者: Yang X.; Zhao C.; Zhou L.; Li Z.; Cribb M.; Yang S.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 211
起始页码: 52
结束页码: 61
语种: 英语
Scopus关键词: Aerosols ; Atmospheric movements ; Atmospheric temperature ; River pollution ; Hong Kong , China ; Low cloud cover ; Negative correlation ; Pearl River delta ; Summer temperature ; Surface air temperatures ; Temperature changes ; Temperature reduction ; Loading
英文摘要: As a southeast neighbor of the heavily industrialized and urbanized region of the Pearl River Delta (PRD), Hong Kong, China, has been susceptible to aerosols transported from the PRD in winter when the prevailing flow is from the west. The decadal trend in pollution during recent decades has likely indicated a difference in aerosol loading between winter and summer when different winds dominate. The surface air temperature shows a wintertime cooling trend during recent decades in Hong Kong, particularly during the midday hours. Differently, the surface air temperature shows a summertime warming trend during recent decades in Hong Kong. By examining the distinct winter versus summer trends in midday hour temperature under low cloud cover conditions in Hong Kong from 1979 to 2014, we found a close relationship between the temperature reduction during midday hours and increased aerosol loading in winter but not in summer. The consistency in turning point for both the increase in aerosol loading and the variation in winter-summer temperature differences in the late 1980s also supports the strong association between aerosol and temperature changes. Further analysis shows that there was a significant negative correlation between downwelling solar radiation (DSR) and aerosol loading. Quantitatively, aerosols over Hong Kong during the study period reduced surface DSR and midday temperatures by approximately 30 W m−2 and 2.1 °C for low cloud cover cases. © 2018 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108834
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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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, China; Joint Center for Global Change Studies, Beijing, China; ESSIC and Department of Atmospheric and Oceanic Science, University of Maryland, College Park, MD, United States

Recommended Citation:
Yang X.,Zhao C.,Zhou L.,et al. Wintertime cooling and a potential connection with transported aerosols in Hong Kong during recent decades[J]. Atmospheric Research,2018-01-01,211
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