Articles | Volume 16, issue 4
https://doi.org/10.5194/acp-16-2435-2016
https://doi.org/10.5194/acp-16-2435-2016
Research article
 | 
01 Mar 2016
Research article |  | 01 Mar 2016

Evaluation and application of multi-decadal visibility data for trend analysis of atmospheric haze

Chi Li, Randall V. Martin, Brian L. Boys, Aaron van Donkelaar, and Sacha Ruzzante

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Short summary
We comprehensively screen and process global hourly visibility data to construct a more reliable monthly inverse visibility (1/Vis) data set, and to infer trends in atmospheric haze. Consistency is found for the inferred 1/Vis seasonality and trends with other collocated in situ aerosol measurements over the US and Europe. Trends of 1/Vis over 1945–1996 for the eastern US, and over 1973–2013 for Europe and eastern Asia are significantly associated with the variation of SO2 emission.
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