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Cornell Study Pinpoints Global Crop Emissions to 10-Kilometer Resolution
The study finds croplands emitted 2.5 gigatons of CO2 equivalent in 2020, with Asia producing half, highlighting tailored mitigation by crop and source is essential.
- Cornell-Led researchers released on Feb. 13 in Nature Climate Change a global croplands emissions map resolving about 10-kilometer grids by crop and emission source, synthesizing ground data and models.
- The last comparable global map dated to 2000, but croplands cover 12% of land and produce 25% of agricultural emissions, so policymakers and scarce funds need updated data.
- Researchers calculated croplands emitted 2.5 gigatons of CO2 equivalent in 2020, with East Asia and Pacific providing about half and South Asia, Europe and Central Asia contributing 30%.
- Researchers propose targeted fixes like controlled peatland rewetting, management of flooded rice paddies, and optimized fertilizer use, urging local communities and countries to act as mitigation funds remain scarce.
- Four crops dominate cropland emissions, led by rice at 43%, with major sources including drained peatlands for oil palm and flooded rice paddies, researchers said.
9 Articles
9 Articles
Spatially explicit global assessment of cropland greenhouse gas emissions circa 2020 - Nature Climate Change
Spatially explicit cropland greenhouse gas emission data are essential for identifying emission hotspots and guiding sustainable mitigation strategies. Here we develop high-resolution (5 arcmin) global maps of cropland emissions across 46 crop classes in 2020 by integrating sectoral datasets on synthetic fertilizer, manure, crop residue, in-field burning, rice cultivation and cultivated drained peatlands. Global croplands emitted 2.5 (95% CI 2.4…
Study creates most precise map yet of agricultural emissions, charts path to reduce hotspots
To lower agricultural emissions, policymakers and communities first need to pinpoint the sources. Not just by country but crop by crop, field by field. In a Cornell Unviersity study published Feb. 13 in Nature Climate Change, researchers have synthesized data from multiple ground sources and models to map global cropland emissions at high resolution – down to about 10 kilometers – while breaking down emissions by crop and source and …
Most precise map yet of agricultural emissions charts a path to reduce hotspots
To lower agricultural emissions, policymakers and communities first need to pinpoint the sources—not just by country but crop by crop, field by field. In a study published in Nature Climate Change, researchers have synthesized data from multiple ground sources and models to map global cropland emissions at high resolution—down to about 10 kilometers—while breaking down emissions by crop and source and identifying regions for more precise mitigat…
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