Vertical Dependency of Aerosol Impacts on Local Scale Convective Precipitation
Vertical Dependency of Aerosol Impacts on Local Scale Convective Precipitation
复制标题
DOI：
10.1029/2022gl102186
复制
发表时间：
2023-01
影响因子：
5.2
通讯作者：
Yue Sun;Yuan Wang;Chuanfeng Zhao;Yuehua Zhou;Yikun Yang;Xingchuan Yang;H. Fan;Xin Zhao;Jieping Yang
中科院分区：
文献类型：
--
作者：
Yue Sun;Yuan Wang;Chuanfeng Zhao;Yuehua Zhou;Yikun Yang;Xingchuan Yang;H. Fan;Xin Zhao;Jieping Yang
气溶胶对对流降水的影响对于了解人类对极端天气和水文循环的影响至关重要。然而，即使是它们的迹象和规模仍然存在争议。特别是气溶胶对降水垂直结构的影响还没有得到系统的研究。结合华北平原6年的空间和地面观测资料，我们发现气溶胶对对流降水的顶高有一个从增强到抑制的回飞棒形影响。进一步的分析表明，气溶胶对不同层次的降水有不同的影响。特别是，近地面降水率没有显示出显着的响应气溶胶和降水-顶部高度由于强蒸发。凝结和冻结释放的能量与蒸发吸收的能量之间的竞争导致了降水顶高度对气溶胶的不同响应，并可以解释回飞棒形气溶胶效应。
Aerosol effects on convective precipitation is critical for understanding human impacts on extreme weather and the hydrological cycle. However, even their signs and magnitude remain debatable. In particular, aerosol effects on vertical structure of precipitation have not been systematically examined yet. Combining 6‐year space‐borne and ground‐based observations over the North China Plain, we show a boomerang‐shape aerosol effect on the top height of convective precipitation, from invigoration to suppression. Further analyses reveal that the aerosols play distinct effects on precipitation rate at different layers. Particularly, near surface precipitation rate shows no significant responses to aerosol and precipitation‐top height due to strong evaporation. The competition of energy between released from condensation and freezing and absorbed by evaporation contributes to different responses of precipitation‐top height to aerosol and can explain the boomerang‐shape aerosol effect.