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Journal Article: BibTeX citation key:  Huang2009b
Huang, J., Adams, A., Wang, C. & Zhang, C. (2009) Black Carbon and West African Monsoon precipitation: observations and simulations. IN Annales Geophysicae, 27. 4171–4181.
Added by: Fanny Lefebvre 2010-08-30 11:15:43    Last Edited by: Fanny Lefebvre 2010-12-08 15:32:28
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Categories: General
Creators: Adams, Huang, Wang, Zhang
Collection: Annales Geophysicae

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Abstract
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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Added by: Fanny Lefebvre    Last Edited by: Fanny Lefebvre