Simulation of the effects of sea‐salt aerosols on cloud ice and precipitation of a tropical cyclone
Abstract This study used the Weather Research and Forecasting model with chemistry (WRF‐Chem) with a parameterization for the emissions of sea‐salt aerosols to assess the effects of sea‐salt aerosols on a tropical cyclone. A control simulation (Ctl) and a simulation with a sea‐salt emission flux tha...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Wiley
2019-09-01
|
Series: | Atmospheric Science Letters |
Subjects: | |
Online Access: | https://doi.org/10.1002/asl.936 |
id |
doaj-d716bc10aad64ab9a2115478aefea870 |
---|---|
record_format |
Article |
spelling |
doaj-d716bc10aad64ab9a2115478aefea8702020-11-25T01:12:12ZengWileyAtmospheric Science Letters1530-261X2019-09-01209n/an/a10.1002/asl.936Simulation of the effects of sea‐salt aerosols on cloud ice and precipitation of a tropical cycloneBaolin Jiang0Wenshi Lin1Fangzhou Li2Baojun Chen3School of Atmospheric Sciences, and Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies Sun Yat‐sen University Guangzhou Guangdong ChinaSchool of Atmospheric Sciences, and Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies Sun Yat‐sen University Guangzhou Guangdong ChinaSchool of Atmospheric Sciences, and Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies Sun Yat‐sen University Guangzhou Guangdong ChinaSchool of Atmospheric Sciences Nanjing University Nanjing ChinaAbstract This study used the Weather Research and Forecasting model with chemistry (WRF‐Chem) with a parameterization for the emissions of sea‐salt aerosols to assess the effects of sea‐salt aerosols on a tropical cyclone. A control simulation (Ctl) and a simulation with a sea‐salt emission flux that is one‐tenth of that in Ctl (Low) were conducted. Results show that sea‐salt aerosols enhance the condensation process, promoting vertical motion and precipitation in a tropical cyclone. Peak precipitation value in Ctl is 120% that in Low. Enhanced vertical motion in Ctl results in increase of water vapor transport to the upper atmosphere, which promotes deposition growth of cloud ice crystals. Therefore, cloud ice mixing ratio and stratiform precipitation in Ctl are larger than those in Low. Stratiform precipitation in the rain band is about 0.5 mm/h in Ctl and about 0.4 mm/h in Low.https://doi.org/10.1002/asl.936precipitationsea‐salt aerosolstropical cycloneWRF‐Chem |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Baolin Jiang Wenshi Lin Fangzhou Li Baojun Chen |
spellingShingle |
Baolin Jiang Wenshi Lin Fangzhou Li Baojun Chen Simulation of the effects of sea‐salt aerosols on cloud ice and precipitation of a tropical cyclone Atmospheric Science Letters precipitation sea‐salt aerosols tropical cyclone WRF‐Chem |
author_facet |
Baolin Jiang Wenshi Lin Fangzhou Li Baojun Chen |
author_sort |
Baolin Jiang |
title |
Simulation of the effects of sea‐salt aerosols on cloud ice and precipitation of a tropical cyclone |
title_short |
Simulation of the effects of sea‐salt aerosols on cloud ice and precipitation of a tropical cyclone |
title_full |
Simulation of the effects of sea‐salt aerosols on cloud ice and precipitation of a tropical cyclone |
title_fullStr |
Simulation of the effects of sea‐salt aerosols on cloud ice and precipitation of a tropical cyclone |
title_full_unstemmed |
Simulation of the effects of sea‐salt aerosols on cloud ice and precipitation of a tropical cyclone |
title_sort |
simulation of the effects of sea‐salt aerosols on cloud ice and precipitation of a tropical cyclone |
publisher |
Wiley |
series |
Atmospheric Science Letters |
issn |
1530-261X |
publishDate |
2019-09-01 |
description |
Abstract This study used the Weather Research and Forecasting model with chemistry (WRF‐Chem) with a parameterization for the emissions of sea‐salt aerosols to assess the effects of sea‐salt aerosols on a tropical cyclone. A control simulation (Ctl) and a simulation with a sea‐salt emission flux that is one‐tenth of that in Ctl (Low) were conducted. Results show that sea‐salt aerosols enhance the condensation process, promoting vertical motion and precipitation in a tropical cyclone. Peak precipitation value in Ctl is 120% that in Low. Enhanced vertical motion in Ctl results in increase of water vapor transport to the upper atmosphere, which promotes deposition growth of cloud ice crystals. Therefore, cloud ice mixing ratio and stratiform precipitation in Ctl are larger than those in Low. Stratiform precipitation in the rain band is about 0.5 mm/h in Ctl and about 0.4 mm/h in Low. |
topic |
precipitation sea‐salt aerosols tropical cyclone WRF‐Chem |
url |
https://doi.org/10.1002/asl.936 |
work_keys_str_mv |
AT baolinjiang simulationoftheeffectsofseasaltaerosolsoncloudiceandprecipitationofatropicalcyclone AT wenshilin simulationoftheeffectsofseasaltaerosolsoncloudiceandprecipitationofatropicalcyclone AT fangzhouli simulationoftheeffectsofseasaltaerosolsoncloudiceandprecipitationofatropicalcyclone AT baojunchen simulationoftheeffectsofseasaltaerosolsoncloudiceandprecipitationofatropicalcyclone |
_version_ |
1725167915245764608 |