Global monthly distributions of atmospheric CO2 concentrations under the historical and future scenarios
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Increases in atmospheric carbon dioxide (CO<sub>2</sub>) concentrations is the main driver of global warming. Satellite observations provide continuous global CO<sub>2</sub> retrieval products, that reveal the nonuniform distributions of atmospheric CO<sub>2 </sub>concentrations. However, climate simulation studies are almost based on a globally uniform mean or latitudinally resolved CO<sub>2</sub> concentrations assumption. In this study, we reconstructed the historical global monthly distributions of atmospheric CO<sub>2</sub> concentrations with 1º resolution from 1850 to 2013. We followed the historical monthly and latitudinally resolved CO<sub>2 </sub>concentrations accounting longitudinal features retrieved from fossil-fuel CO<sub>2</sub> emissions from Carbon Dioxide Information Analysis Center. And the spatial distributions of nonuniform CO<sub>2</sub> under Shared Socio-economic Pathways and Representative Concentration Pathways scenarios were generated based on the spatial, seasonal and interannual scales of the current CO<sub>2</sub> concentrations from 2015 to 2150. Including the heterogenous CO<sub>2 </sub>distributions could enhance the realism of global climate modeling, to better anticipate the potential socio-economic implications, adaptation practices, and mitigation of climate change.
