Articles | Volume 15, issue 14
https://doi.org/10.5194/acp-15-8439-2015
https://doi.org/10.5194/acp-15-8439-2015
Research article
 | 
28 Jul 2015
Research article |  | 28 Jul 2015

Observations of relative humidity effects on aerosol light scattering in the Yangtze River Delta of China

L. Zhang, J. Y. Sun, X. J. Shen, Y. M. Zhang, H. Che, Q. L. Ma, Y. W. Zhang, X. Y. Zhang, and J. A. Ogren

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The aerosol hygroscopic properties at a rural background site in the Yangtze River delta of China was discussed. The results show the scattering coefficient and backscattering coefficient increased by 58 and 25% as relative humidity (RH) increased from 40 to 85%, while the hemispheric backscatter fraction decreased by 21%. Aerosol hygroscopic growth caused a 47% increase in calculated aerosol direct radiative forcing at 85% RH compared to the forcing at 40% RH. Nitrate played a vital role.
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