Fig. 2: Interannual variations of autumn NEE over the land north of 25° N for the periods 1982–2003 and 2004–2018.
From: Increasing terrestrial ecosystem carbon release in response to autumn cooling and warming
a, The interannual variation of NEE derived from ensemble simulations of global vegetation dynamic models (TRENDY), empirical models based on eddy-covariance data (FLUXCOM) and atmospheric inversion models (CarboScope, NISMON and CAMS). The light grey lines represent the individual models from TRENDY. b, NEE trends over the periods 1982–2003 and 2004–2018 for TRENDY (red), FLUXCOM (orange), CarboScope (blue), CAMS (purple) and NISMON (black). The small graph in the upper left corner of b shows the ratios between the trends of the carbon exchange in the later and earlier periods. The trend in NISMON was calculated only for the period 2004–2018. The error bars indicate the 90% confidence intervals of the trends. *P < 0.1; **P < 0.05; ***P < 0.01. The grey vertical line in the figure shows the dividing line with 2004 as the boundary.
