Modeling and Observational Studies of Shallow Cumulus Convection Over the Indian Ocean: Aerosol and Meteorological Effects on Diurnal Cycles

Additional solar heating induced by soot aerosols affected the static stability in the boundary layer. The vertical profile of soot aerosols had a critical influence on how they impacted cloud properties and turbulence. Changes in environmental relative humidity and the presence of a dry and stable layer had critical impacts on cumulus cloud properties, turbulence and lateral detrainment rate, and on how anthropogenic aerosols affect these quantities. For the range of meteorological conditions observed during INDOEX the semi-direct effect always dominated indirect effects, producing a positive daytime mean net indirect forcing, varying between 0.2 and 4.5 W m-2. Further, the indirect forcing was larger when the environmental relative humidity was higher and in the absence of any dry and stable layers.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Atmospheric Sciences

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Wang, Hailong

Contributors dc:contributor

• McFarquhar, Greg M.

• Geophysics

Language dc:language

eng

Identifier

(MiAaPQ)AAI3290419

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/85971