The Impact of Air Pollution Control Programs (2014-2019) on the Vertical Structure of Precipitation in China

被引：0

作者：

Zhu, Hongxia ^{[1
]}

Zhou, Renjun ^{[1
]}

Zhao, Hongwei ^{[1
]}

Li, Rui ^{[1
]}

机构：

[1] Univ Sci & Technol China, Sch Earth & Space Sci, CMA USTC Lab Fengyun Remote Sensing, Deep Space Explorat Lab, Hefei, Peoples R China

来源：

GEOPHYSICAL RESEARCH LETTERS | 2025年 / 52卷 / 11期

基金：

中国国家自然科学基金;

关键词：

cloud-aerosol-precipitation interactions; precipitation vertical structure; precipitation top height (PTH); satellite remote sensing; aerosol; emission reduction; CLOUD MICROPHYSICS; AEROSOL; ALGORITHM; PROFILES; VARIABILITY; RETRIEVAL;

D O I：

10.1029/2024GL113571

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The impact of air pollution control programs on the vertical structure of precipitation remains poorly understood. Using multiple data sources, we observed a yearly decrease in aerosol optical depth (AOD) in southern China from 2014 to 2019, probably due to these programs. In contrast, the precipitation top height related to rain onset (PTH0), increased annually after accounting for thermodynamic variations. Further analyses revealed that, within the mixed/lower atmospheric layers, the growth of precipitating particles (SlopeA/SlopeB) was significantly faster/slower in 2014 compared to subsequent years. The correlation coefficients (R) between AOD and SlopeA and PTH0 were 0.99 and -0.94, respectively. As this study is based on multi-source observations, further research incorporating model simulations is necessary to elucidate the mechanisms underlying the impact of emission reductions on the vertical structure of precipitation.

引用

页数：10

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