%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Bedou, M.
%A Konare, A.
%A Seidou-Sanda, I.
%A Assamoi, P.
%A Diedhiou, Arona
%T Hygroscopic properties of aerosols in the Sahel : preliminary results
%D 2007
%L fdi:010044085
%G ENG
%J Scientific Research and Essays
%@ 1992-2248
%K aerosol ; optical depth ; Angstrom coefficient ; atmospheric water content ; and hygroscopic growth
%M ISI:000259850900002
%N 6
%P 177-183
%U https://www.documentation.ird.fr/hor/fdi:010044085
%> https://www.documentation.ird.fr/intranet/publi/2008/11/010044085.pdf
%V 2
%W Horizon (IRD)
%X Approximately three years of sunphotometric measurements carried out in the locality of Bidi (13.36 degrees N; 2.30 degrees W) in Burkina Faso (West Africa) from October 1986 to January 1989 were used to estimate the atmospheric precipitable water vapour (APW) and the Angstrom exponent values a. A study of the relationship between these two parameters on a seasonal time scale shows that an increase of water vapour in the Sahel is associated with a decrease of a values, indicating hygroscopic growth of aerosol particles. This result shows that the Sahel aerosol particles may grow in size through water vapour absorption due to hygroscopic properties.
%$ 021