Fig. 2: County-level map of greenhouse gas emissions from irrigation pumping. | Nature Communications

Fig. 2: County-level map of greenhouse gas emissions from irrigation pumping.

From: Greenhouse gas emissions from US irrigation pumping and implications for climate-smart irrigation policy

Fig. 2

The distribution of (a) total greenhouse gas emissions (tonnes CO2e) from energy use for on-farm irrigation pumping in 2018 in the United States, and several key drivers of emissions, including: b total water demand for crop irrigation (km3 per year), c the percentage of total emissions attributable to groundwater use rather than surface water use, and d the percentage of emissions attributable to natural gas, diesel, gasoline, or propane pumps rather than electrical pumps. a, b The color scale is square root transformed for improved visibility. a–c Counties that have no emissions are in white.

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