AI Article Synopsis
- Dust is crucial for climate and biophysical feedbacks, with the Bodélé Depression in Chad being a major source, producing about half of the Sahara's mineral aerosols.
- Our study uses advanced remote sensing, modeling, and chemical analyses to explore how slight changes in atmospheric circulation could significantly impact dust behavior in this region.
- Historical data shows that dust production from Bodélé stopped during the mid-Holocene, but some future climate simulations suggest a possible substantial increase in dust output by the end of the 21st century.
Article Abstract
Dust plays a vital role in climate and biophysical feedbacks in the Earth system. One source of dust, the Bodélé Depression in Chad, is estimated to produce about half the mineral aerosols emitted from the Sahara, which is the world's largest source. By using a variety of new remote sensing data, regional modeling, trajectory models, chemical analyses of dust, and future climate simulations, we investigate the current and past sensitivity of the Bodélé. We show that minor adjustments to small features of the atmospheric circulation, such as the Bodélé Low-Level Jet, could profoundly alter the behavior of this feature. Dust production during the mid-Holocene ceased completely from this key source region. Although subject to a great deal of uncertainty, some simulations of the 21st century indicate the potential for a substantial increase in dust production by the end of the century in comparison with current values.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2791565 | PMC |
| http://dx.doi.org/10.1073/pnas.0711850106 | DOI Listing |
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