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Home > Featured Articles > Dust-rainfall feedbacks in the West African Sahel > Dust-rainfall feedbacks in the West African Sahel

Dust-rainfall feedbacks in the West African Sahel [1]

Dust aerosols can suppress rainfall by increasing the number of cloud condensation nuclei in warm clouds and affecting the surface radiation budget and boundary layer instability. The extent to which atmospheric dust may affect precipitation yields and the hydrologic cycle in semiarid regions remains poorly understood. We investigate the relationship between dust aerosols and rainfall in the West African Sahel where the dust-rainfall feedback has been speculated to contribute to sustained droughts. We find that the amount of dust loadings is negatively correlated with rainfall values, suggesting that dust entrained in the atmosphere can significantly inhibit rainfall in this region.

Original Source [2]

Publication Date: 
14/05/2008
Wanching Jacquie Hui [3], Benjamin I. Cook [4], Sujith Ravi & et al [5]
Water Resources Research [6]
44
1-6
Tags:
Rainfall [7], Aerosols [8], Africa [9], Atmosphere [10], Rainfall Pattern [11], Droughts [12], Solar Radiation [13]
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Source URL: http://admin.indiaenvironmentportal.org.in/feature-article/dust-rainfall-feedbacks-west-african-sahel

Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/dust-rainfall-feedbacks-west-african-sahel
[2] http://www.ldeo.columbia.edu/~bc9z/mypubs/2008_hui.pdf
[3] http://admin.indiaenvironmentportal.org.in/category/author/wanching-jacquie-hui
[4] http://admin.indiaenvironmentportal.org.in/category/author/benjamin-i-cook
[5] http://admin.indiaenvironmentportal.org.in/category/author/sujith-ravi-et-al
[6] http://admin.indiaenvironmentportal.org.in/category/journal/water-resources-research
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rainfall
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/aerosols
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/africa
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/atmosphere
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rainfall-pattern
[12] http://admin.indiaenvironmentportal.org.in/category/thesaurus/droughts
[13] http://admin.indiaenvironmentportal.org.in/category/thesaurus/solar-radiation