Correlations between the interannual variation in land carbon sinks (NEP), atmospheric CO2 growth rate and vapor pressure deficit (VPD) at the monthly scale. (IMAGE)

Science China Press

Correlations between the interannual variation in land carbon sinks (NEP), atmospheric CO2 growth rate and vapor pressure deficit (VPD) at the monthly scale.

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(a) Interannual variations in NEP and VPD over global lands from 1980 to 2013; NEP simulations from FLUXCOM (green line) and TRENDY (black line) were used. (b) Interannual variation in the atmospheric CO2 growth rate (blue line) and the VPD. The numbers in the figure show the correlation coefficients (r) of the VPD with FLUXCOM-NEP (green), TRENDY-NEP (black) and CO2 growth rate (blue), and * indicates statistical significance at p < 0.05. Art by Yafeng Zhang.

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