Biogeosciences
Biogeosciences
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Articles | Volume 18, issue 2
Articles | Volume 18, issue 2
https://doi.org/10.5194/bg-18-557-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-18-557-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 2
Research article
 | 
22 Jan 2021
Research article |  | 22 Jan 2021

Using satellite data to identify the methane emission controls of South Sudan's wetlands

Sudhanshu Pandey, Sander Houweling, Alba Lorente, Tobias Borsdorff, Maria Tsivlidou, A. Anthony Bloom, Benjamin Poulter, Zhen Zhang, and Ilse Aben

Data sets

TROPOMI/S5P Methane KNMI https://s5phub.copernicus.eu/dhus/#/home

Surface Water Microwave Product Series Version 3.2 K. Jensen and K. McDonald https://asf.alaska.edu/data-sets/derived-data-sets/wetlands-measures/wetlands-measures-product-downloads/

Global 0.5-deg Wetland Methane Emissions and Uncertainty (WetCHARTs v1.0) NASA-CMS https://daac.ornl.gov/CMS/guides/CMS_Global_Monthly_Wetland_CH4.html

Time series of water levels in the rivers and lakes around the world CNES http://hydroweb.theia-land.fr/

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Short summary
We use atmospheric methane observations from the novel TROPOspheric Monitoring Instrument (TROPOMI; Sentinel-5p) to estimate methane emissions from South Sudan's wetlands. Our emission estimates are an order of magnitude larger than the estimate of process-based wetland models. We find that this underestimation by the models is likely due to their misrepresentation of the wetlands' inundation extent and temperature dependences.
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