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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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Articles | Volume 15, issue 14
Atmos. Chem. Phys., 15, 8439–8454, 2015
https://doi.org/10.5194/acp-15-8439-2015
Atmos. Chem. Phys., 15, 8439–8454, 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 et al.

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Cited articles

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Short summary
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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