期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Sea-Salt Aerosol Effects on the Simulated Microphysics and Precipitation in a Tropical Cyclone 被引量:1
1
作者 baolin jiang Wenshi LIN +1 位作者 Fangzhou LI Junwen CHEN 《Journal of Meteorological Research》 SCIE CSCD 2019年第1期115-125,共11页
We investigate the effects of sea-salt aerosol(SSA) activated as cloud condensation nuclei on the microphysical processes, precipitation, and thermodynamics of a tropical cyclone(TC). The Weather Research and Forecast... We investigate the effects of sea-salt aerosol(SSA) activated as cloud condensation nuclei on the microphysical processes, precipitation, and thermodynamics of a tropical cyclone(TC). The Weather Research and Forecasting model coupled with Chemistry(WRF-Chem) was used together with a parameterization of SSA production. Three simulations, with different levels of SSA emission(CTL, LOW, HIGH), were conducted. The simulation results show that SSA contributes to the processes of autoconversion of cloud water and accretion of cloud water by rain,thereby promoting rain formation. The latent heat release increases with SSA emission, slightly increasing horizontal wind speeds of the TC. The presence of SSA also regulates the thermodynamic structure and precipitation of the TC.In the HIGH simulation, higher latent heat release gives rise to stronger updrafts in the TC eyewall area, leading to enhanced precipitation. In the LOW simulation, due to decreased latent heat release, the temperature in the TC eye is lower, enhancing the downdrafts in the region; and because of conservation of mass, updrafts in the eyewall also strengthen slightly; as a result, precipitation in the LOW experiment is a little higher than that in the CTL experiment.Overall, the relationship between the precipitation rate and SSA emission is nonlinear. 展开更多
关键词 SEA-SALT aerosol MICROPHYSICS tropical CYCLONE WRF-Chem cloud CONDENSATION NUCLEI
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部