Articles | Volume 21, issue 21
Atmos. Chem. Phys., 21, 16277–16291, 2021
https://doi.org/10.5194/acp-21-16277-2021
Atmos. Chem. Phys., 21, 16277–16291, 2021
https://doi.org/10.5194/acp-21-16277-2021

Research article 16 Nov 2021

Research article | 16 Nov 2021

Changes in biomass burning, wetland extent, or agriculture drive atmospheric NH3 trends in select African regions

Jonathan E. Hickman et al.

Data sets

NOAA Global Surface Temperature Dataset (NOAAGlobal- Temp) H.-M. Zhang, B. Huang, J. Lawrimore, M. Menne, and T. M. Smith https://doi.org/10.25921/9qth-2p70

MCD64A1 MODIS/Terra+Aqua Burned Area Monthly L3 Global 500m SIN Grid V006 L. Giglio, C. Justice, L. Boschetti, and D. Roy https://doi.org/10.5067/MODIS/MCD64A1.006

MCD12C1 MODIS/Terra+Aqua Land Cover Type Yearly L3 Global 0.05Deg CMG V006 M. Friedl and D. Sulla-Menashe https://doi.org/10.5067/MODIS/MCD12C1.006

TRMM (TMPA/3B43) Rainfall Estimate L3 1 month 0.25 degree x 0.25 degree V7 Tropical Rainfall Measuring Mission (TRMM): , Greenbelt, MD, Goddard Earth Sciences Data and Information [data set], \doi{}, 2011. https://doi.org/10.5067/TRMM/TMPA/MONTH/7

Global sheep distribution in 2010 (5 minutes of arc) M. Gilbert, G. Nicolas, G. Cinardi, T. P. Van Boeckel, S. Vanwambeke, W. G. R. Wint, and T. P. Robinson https://doi.org/10.7910/DVN/BLWPZN

Global pigs distribution in 2010 (5 minutes of arc) M. Gilbert, G. Nicolas, G. Cinardi, T. P. Van Boeckel, S. Vanwambeke, W. G. R. Wint, and T. P. Robinson https://doi.org/10.7910/DVN/33N0JG

Global goats distribution in 2010 (5 minutes of arc) M. Gilbert, G. Nicolas, G. Cinardi, T. P. Van Boeckel, S. Vanwambeke, W. G. R. Wint, and T. P. Robinson https://doi.org/10.7910/DVN/OCPH42

Global cattle distribution in 2010 (5 minutes of arc) M. Gilbert, G. Nicolas, G. Cinardi, T. P. Van Boeckel, S. Vanwambeke, W. G. R. Wint, and T. P. Robinson https://doi.org/10.7910/DVN/GIVQ75

Global chickens distribution in 2010 (5 minutes of arc) M. Gilbert, G. Nicolas, G. Cinardi, T. P. Van Boeckel, S. Vanwambeke, W. G. R. Wint, and T. P. Robinson https://doi.org/10.7910/DVN/SUFASB

Global buffaloes distribution in 2010 (5 minutes of arc) M. Gilbert, G. Nicolas, G. Cinardi, T. P. Van Boeckel, S. Vanwambeke, W. G. R. Wint, and T. P. Robinson https://doi.org/10.7910/DVN/5U8MWI

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Short summary
Ammonia (NH3) gas emitted from soils and biomass burning contributes to particulate air pollution. We used satellite observations of the atmosphere over Africa to show that declines in NH3 concentrations over South Sudan's Sudd wetland in 2008–2017 are related to variation in wetland extent. We also find NH3 concentrations increased in West Africa as a result of biomass burning and increased in the Lake Victoria region, likely due to agricultural expansion and intensification.
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