Dezfuli, AminIchoku, CharlesBosilovich, Michael G.2024-10-282024-10-282024-09-15Dezfuli, Amin, Charles M. Ichoku, and Michael G. Bosilovich. “Large-Scale Climate Features Control Fire Emissions and Transport in Africa.” Geophysical Research Letters 51, no. 18 (2024): e2024GL110179. https://doi.org/10.1029/2024GL110179.https://doi.org/10.1029/2024GL110179http://hdl.handle.net/11603/36737Recent increase in extreme wildfire events has led to major health and environmental consequences across the globe. These adverse impacts underlined the need for better understanding of this phenomenon and to formulate mitigating actions. While previous research has focused on local weather drivers of wildfires, our knowledge about their large-scale climatic controls remains limited, especially in tropical Africa, which stands out as a global hotspot for fire emissions. Here, we show that interannual variability of carbon emission due to fires in the southern Congo Basin is strongly linked to low-level winds that are controlled by the Indian Ocean subtropical high. The interhemispheric transport of these emissions to West Africa relies on the intensity and position of both Indian and South Atlantic subtropical highs. Combined effects of this transport mechanism and carbon production in the source region explain a majority of the interannual variability of black carbon in West Africa.8 pagesen-USThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.Public Domainhttps://creativecommons.org/publicdomain/mark/1.0/climate dynamicsCongo Basinbiomass burningAfricawildfireText