Bedou M., Konare A., Seidou-Sanda I., Assamoi P., Diedhiou Arona. (2007). Hygroscopic properties of aerosols in the Sahel : preliminary results. Scientific Research and Essays, 2 (6), p. 177-183. ISSN 1992-2248.
Titre du document
Hygroscopic properties of aerosols in the Sahel : preliminary results
Bedou M., Konare A., Seidou-Sanda I., Assamoi P., Diedhiou Arona
Source
Scientific Research and Essays, 2007,
2 (6), p. 177-183 ISSN 1992-2248
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.
