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Methane Emissions Wetlands - Wiley Online Library

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Last Updated: 08 February 2022

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Improving Representation of Tropical Wetland Methane Emissions With CYGNSS Inundation Maps

The single biggest source of methane in the atmosphere, the Wetlands, are the single largest source of methane to the atmosphere, and their emissions are expected to respond to a changing climate. Model wetland emissions and effects representation of wetland emissions on inter-annual and seasonal time frames differ due to inaccuracy and uncertainty in inundation extent. These inundation maps can be linked to methane fluxes using WetCHARTs, a global wetland methane emission model ensemble. We compare CYGNSS-simulated methane emissions with WetCHARTs standard runs that use monthly rainfall data from ECMWF's reanalysis, as well as the commonly used SWAMPS wetland maps. Multiple ways can be modified by the CYGNSS-based inundation maps. Following peak rainfall, peak rainfall has changed the yearly availability of inundation and methane emissions by two months. Both floodplain and methane emissions react non-linearly to total wet-season precipitation levels, resulting in significant interannual variability in emissions.

Source link: https://onlinelibrary.wiley.com/doi/10.1029/2020GB006890

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions