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Scatter plot of AIRS Level 3 CO2 and H2O daily anomalies during the winters of September 2002–November 2009 between 10 °S and 10 °N. Color contours represent the probability distribution function of the scattered points. The slope of the linear fit is 0.13 ± 0.01 ppmv-CO2 per g/kg-H2O.
