Black Carbon and West African Monsoon precipitation: observations and simulations
We have recently investigated large-scale co-variability between aerosol and precipitation and other meteorological variables in the West African Monsoon (WAM) region using long term satellite observations and reanalysis data. In this study we compared the observational results to a global model...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2009-11-01
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| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/27/4171/2009/angeo-27-4171-2009.pdf |
| Summary: | We have recently investigated large-scale co-variability between aerosol and
precipitation and other meteorological variables in the West African Monsoon
(WAM) region using long term satellite observations and reanalysis data. In
this study we compared the observational results to a global model
simulation including only direct radiative forcing of black carbon (BC).
From both observations and model simulations we found that in boreal cold
seasons anomalously high African aerosols are associated with significant
reductions in cloud amount, cloud top height, and surface precipitation.
These results suggest that the observed precipitation reduction in the WAM
region is caused by radiative effect of BC. The result also suggests that
the BC effect on precipitation is nonlinear. |
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| ISSN: | 0992-7689 1432-0576 |