Aerosol-cloud interaction inferred from MODIS satellite data and global aerosol models
By G. Myhre, F. Stordal, M. Johnsrud, Yoram J. Kaufman, Daniel Rosenfeld, T. Storelvmo, J. Kristjánsson, T. Berntsen, Arne Myhre, I. Isaksen. 2006
179 citations recorded by the source corpus.
We have used the MODIS satellite data and two global aerosol models to investigate the relationships be- tween aerosol optical depth (AOD) and cloud parameters that may be affected by the aerosol concentration. The relation- ships that are studied are mainly between AOD, on the one hand, and cloud cover, cloud liquid water path, and water vapour, on the other. Additionally, cloud droplet effective radius, cloud optical depth, cloud top pressure and aerosol ˚ Angstrexponent, have been analysed in a few cases. In the MODIS data we found, as in earlier studies, an enhance- ment in the cloud cover with increasing AOD. We find it likely that most of the strong increase in cloud cover with AOD, at least for AOD 0.2 can be explained by larger water uptake close to the clouds since relative humidity is higher in regions with higher cloud cover. The efficiency of the hy- groscopic growth depends on aerosol type, the hygroscopic nature of the aerosol, the relative humidity, and to some ex- tent the cloud screening. By analysing the ˚ Angstr¨ om expo- nent we find that the hygroscopic growth of the aerosol is not likely to be a main contributor to the cloud cover increase with AOD. Since the largest increase in cloud cover with
Subfields: Atmospheric Science, Global and Planetary Change
View Paper: https://www.semanticscholar.org/paper/8c617d8d60438cd80959902bb06c2eb4285a188b
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In Atmospheric Science
- Johannes Quaas
- P. Stier
- Ulrike Lohmann
- Bjorn Stevens
- Bernd Kärcher
- C. Hoose
- R. Wood
- Andrew Gettelman
In Global and Planetary Change
- P. Stier
- Johannes Quaas
- Ulrike Lohmann
- Bjorn Stevens
- Bernd Kärcher
- C. Hoose
- R. Wood
- Andrew Gettelman
Citations in the corpus
- Interpreting the cloud cover – aerosol optical depth relationship found in satellite data using a general circulation model (2009, background): “Aerosol swelling:Aerosol size increases in the air surrounding clouds where relative humidity is higher (Haywood et al., 1997; Charlson et al., 2007; Koren et al., 2007; Myhre et al., 2007; Twohy et al., 2009; Roelofs et al., 2010).”