Interactive comment on “Seasonal Variability of Tropical Wetland CH<sub>4</sub> emissions: the role of the methanogen-available carbon pool” by A. A. Bloom et al
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چکیده
CH4 column over the Amazon can occur some months prior to the peak in the water table (the measure used to characterise the ’wetland’). The parameterisation is then applied globally and used in the GEOS-CHEM atmospheric chemistry model. This work is highly relevant as many of the leading land surface models (e.g., the US Community Land Model (Riley et al., 2011), the Joint UK Land Environment Simulator (Clark et al., 2011), Orchidee (Ringeval et al., 2010), etc) generally use parameterisations of CH4 release from wetlands which would scale with the wetland extent/fraction, all other factors being equal.
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Interactive comment on “Seasonal Variability of Tropical Wetland CH<sub>4</sub> emissions: the role of the methanogen-available carbon pool” by A. A. Bloom et al
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Interactive comment on “Seasonal Variability of Tropical Wetland CH<sub>4</sub> emissions: the role of the methanogen-available carbon pool” by A. A. Bloom et al
متن کامل
Interactive comment on “Seasonal Variability of Tropical Wetland CH<sub>4</sub> emissions: the role of the methanogen-available carbon pool” by A. A. Bloom et al
the Tropics. Substrate availability as a primary control on methane emissions is a viable hypothesis, but I feel the paper would be enhanced by a more thorough analysis and discussion of alternative controllers on the seasonality of net CH4 emissions to the atmosphere. It seems possible that the decay constant the authors infer could be explained by other processes with comparable temporal vari...
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We develop a dynamic methanogen-available carbon model (DMCM) to quantify the role of the methanogenavailable carbon pool in determining the spatial and temporal variability of tropical wetland CH4 emissions over seasonal timescales. We fit DMCM parameters to satellite observations of CH4 columns from SCIAMACHY CH4 and equivalent water height (EWH) from GRACE. Over the Amazon River basin we fou...
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