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Impacts of wind stilling on solar radiation variability in China
- Lin, C. G. (author)
- Yang, K. (author)
- Huang, J. P. (author)
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- Tang, W. J. (author)
- Qin, J. (author)
- Niu, X. L. (author)
- Chen, Y. Y. (author)
- Lu, N. (author)
- Fu, R. (author)
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- (creator_code:org_t)
- 2015-10-14
- 2015
- English.
- In: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 5
- Journal article (peer-reviewed)
Abstract
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- Solar dimming and wind stilling (slowdown) are two outstanding climate changes occurred in China over the last four decades. The wind stilling may have suppressed the dispersion of aerosols and amplified the impact of aerosol emission on solar dimming. However, there is a lack of long-term aerosol monitoring and associated study in China to confirm this hypothesis. Here, long-term meteorological data at weather stations combined with short-term aerosol data were used to assess this hypothesis. It was found that surface solar radiation (SSR) decreased considerably with wind stilling in heavily polluted regions at a daily scale, indicating that wind stilling can considerably amplify the aerosol extinction effect on SSR. A threshold value of 3.5 m/s for wind speed is required to effectively reduce aerosols concentration. From this SSR dependence on wind speed, we further derived proxies to quantify aerosol emission and wind stilling amplification effects on SSR variations at a decadal scale. The results show that aerosol emission accounted for approximately 20% of the typical solar dimming in China, which was amplified by approximately 20% by wind stilling.
Subject headings
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Meteorologi och atmosfärforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Meteorology and Atmospheric Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Klimatforskning (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Climate Research (hsv//eng)
Keyword
- NORTHERN-HEMISPHERE
- SURFACE
- VISIBILITY
- TRENDS
- AEROSOLS
- LAND
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- ref (subject category)
- art (subject category)
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- Lin, C. G.
- Yang, K.
- Huang, J. P.
- Tang, W. J.
- Qin, J.
- Niu, X. L.
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- Chen, Y. Y.
- Chen, Deliang, 1 ...
- Lu, N.
- Fu, R.
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- University of Gothenburg
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