Existing biogeochemistry models often contain a simple single- bucket hydrological model. In these hydrological models, the water is simply balanced so as to estimate soil moisture and water fluxes, which are then used to drive biogeochemical processes. These pixel- based hydrological and biogeochemistry models are then extrapolated to regional scales to quantify greenhouse gas cycling. This paradigm ignores the lateral flow induced by elevation or topographical differences between grids across the landscape, biasing estimates of key water fluxes, moisture, and water table depth, leading to errors in the quantification of greenhouse gas emissions.
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