Title :
The impact of aerosols on cloud and precipitation processes: cloud-resolving model simulations
Author :
Tao, Wei-Kuo ; Li, Xiaowen ; Khain, Alexander ; Matsui, Toshihisa ; Lang, Stephen ; Simpson, Joanne
Author_Institution :
Lab. for Atmospheres, NASA/Goddard Space Flight Center, Greenbelt, MD, USA
Abstract :
Recently, a detailed spectral-bin microphysical scheme was implemented into the Goddard Cumulus Ensemble (GCE) model. Atmospheric aerosols are also described using number density size-distribution functions. A spectral-bin microphysical model is very expensive from a computational point of view and has only been implemented into the 2D version of the GCE at the present time. The model is tested by studying the evolution of deep tropical clouds in the west Pacific warm pool region and summertime convection over a mid-latitude continent with different concentrations of CCN: a low "clean" concentration and a high "dirty" concentration. The impact of atmospheric aerosol concentration on cloud and precipitation will be investigated.
Keywords :
aerosols; atmospheric precipitation; clouds; convection; modelling; 2D GCE; GCE model; Goddard Cumulus Ensemble model; aerosol effects; atmospheric aerosol concentration effects; atmospheric aerosols; cloud processes; cloud resolving model simulations; deep tropical cloud evolution; midlatitude continent; number density size distribution functions; precipitation processes; spectral bin microphysical scheme; summertime convection; west Pacific warm pool region; Aerosols; Atmospheric modeling; Clouds; Cooling; Ice; Rain; Surface cleaning;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International
Conference_Location :
Munich
Print_ISBN :
978-1-4673-1160-1
Electronic_ISBN :
2153-6996
DOI :
10.1109/IGARSS.2012.6351003
