TY - JOUR
T1 - Anthropogenic Effects on Cloud Condensation Nuclei Distribution and Rain Initiation in East Asia
AU - Liu, Chong
AU - Wang, Tijian
AU - Rosenfeld, Daniel
AU - Zhu, Yannian
AU - Yue, Zhiguo
AU - Yu, Xing
AU - Xie, Xiaodong
AU - Li, Shu
AU - Zhuang, Bingliang
AU - Cheng, Tiantao
AU - Niu, Shengjie
N1 - Publisher Copyright:
©2020. American Geophysical Union. All Rights Reserved.
PY - 2020/1/28
Y1 - 2020/1/28
N2 - The recently developed method for retrieving cloud drop concentrations (Nd), cloud base updraft, and supersaturation made it possible to map these properties over East Asia. It was done for the summers of 2013 to 2019, in conjunction to low level wind direction. The background CCN concentrations were nearly equally low (<300 cm−3) over minimally perturbed air masses to the south and east of the densely populated areas of China, over ocean, and to the north over northern China, Mongolia, and southern Siberia. This stood in large contrast to large concentrations of activated CCN into cloud droplets reaching up to 2,000 cm−3 over and downwind of the densely populated regions over East Asia. Because cloud depth for rain initiation (Dc) increased linearly with CCN concentrations, the enhanced CCN increased Dc from a background of <1 km over ocean and ~2 km to the north of China to Dc > 4 km over the most polluted regions.
AB - The recently developed method for retrieving cloud drop concentrations (Nd), cloud base updraft, and supersaturation made it possible to map these properties over East Asia. It was done for the summers of 2013 to 2019, in conjunction to low level wind direction. The background CCN concentrations were nearly equally low (<300 cm−3) over minimally perturbed air masses to the south and east of the densely populated areas of China, over ocean, and to the north over northern China, Mongolia, and southern Siberia. This stood in large contrast to large concentrations of activated CCN into cloud droplets reaching up to 2,000 cm−3 over and downwind of the densely populated regions over East Asia. Because cloud depth for rain initiation (Dc) increased linearly with CCN concentrations, the enhanced CCN increased Dc from a background of <1 km over ocean and ~2 km to the north of China to Dc > 4 km over the most polluted regions.
KW - Cloud condensation nuclei
KW - East Asia
KW - NPP-VIIRS
UR - http://www.scopus.com/inward/record.url?scp=85079827242&partnerID=8YFLogxK
U2 - 10.1029/2019GL086184
DO - 10.1029/2019GL086184
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AN - SCOPUS:85079827242
SN - 0094-8276
VL - 47
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 2
M1 - e2019GL086184
ER -