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Dust radiative feedback on Saharan boundary layer dynamics and dust mobilization

Dust radiative feedback on Saharan boundary layer dynamics and dust mobilization,10.1029/2008GL035319,Geophysical Research Letters,B. Heinold,I. Tegen

Dust radiative feedback on Saharan boundary layer dynamics and dust mobilization  
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Mineral dust radiative effects and feedbacks upon Saharan boundary layer meteorology are estimated by means of regional dust simulations for a one-week period in May 2006. The regional dust model system LM-MUSCAT is used, which allows online interaction of the computed dust load with the solar and thermal radiation and consequently with the model dynamics. For the Bodélé depression, a mechanism is proposed that describes positive and negative dust radiative feedbacks on surface wind speeds and dust emission in dependence on atmospheric stratification, dust-induced stabilization, and baroclinity. These effects are attributed to the formation and breakdown of the low-level jet (LLJ), which is a common phenomenon in the Bodélé. However, such processes are likely also relevant for other Saharan regions.
Journal: Geophysical Research Letters - GEOPHYS RES LETT , vol. 35, no. 20, 2008
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