Implement GRPI CH4 rice emissions to replace EDGAR in CH4 and carbon simulations #2673
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The Global Rice Patty Inventory (GRPI) as documented in Z. Chen et al. (2025) is added as the default global rice emissions inventory in CH4 and carbon simulations. The GHGI_v2 (US) and Scarpelli_Mexico rice emissions will still be used over the US and Mexico. GRPI emissions are monthly and provided at 0.1x0.1 resolution. They are based on Landsat satellite inundation data. Reference: Chen, Z., Lin, H., Balasus, N., Hardy, A., East. J.D., Zhang, Y., Runkle, B.R.K., Hancock, S.E., Taylor, C.A., Du, X., Sander, B.O., Jacob, D. J. , Global Rice Paddy Inventory (GRPI): a high-resolution inventory of methane emissions from rice agriculture based on Landsat satellite inundation data, submitted to Earth's Future, https://doi.org/10.31223/X5941Z, 2025. Signed-off-by: Melissa Sulprizio <[email protected]>
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category: Feature Request
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Name and Institution (Required)
Name: Melissa Sulprizio
Institution: Harvard
Describe the update
The Global Rice Patty Inventory (GRPI) as documented in Z. Chen et al. (2025) is added as the default global rice emissions inventory in CH4 and carbon simulations. The GHGI_v2 (US) and Scarpelli_Mexico rice emissions will still be used over the US and Mexico. GRPI emissions are monthly and provided at 0.1x0.1 resolution. They are based on Landsat satellite inundation data.
Tagging developers @zichongchen and @eastjames
Expected changes
This is a zero-difference update with respect to the fullchem benchmark simulations. In CH4 and carbon simulations it will increase CH4 rice emissions. From Chen et al. (2025):
Reference(s)
Related Github Issue
Closes #2637