Fig. 4: Sensitivity of net ecosystem exchange (NEE) to temperature (T) and terrestrial water storage (TWS) in boreal spring and summer.

NEE is estimated by atmospheric inversions (a, d), DGVMs from the TRENDY project in simulation S2 (NEE output) (b, e), and FLUXCOM models (c, f). A positive sensitivity to TWS means drier conditions are correlated with more net carbon uptake, while a positive sensitivity to T means warmer conditions are correlated with less net carbon uptake.