Fig. 7: Observed and simulated annual GPP trends at two AmeriFlux sites. | npj Climate and Atmospheric Science

Fig. 7: Observed and simulated annual GPP trends at two AmeriFlux sites.

From: When is a trend meaningful? Insights to carbon cycle variability from an initial-condition large ensemble

Fig. 7

a Statistical distribution of trends at US-MMS (Morgan-Monroe State Forest) for 1999–2020. Trends from the CESM2 Large Ensemble are normally distributed (mean ± standard deviation, 11.6 ± 42.3 g C m−2 yr−1 per 10 years). Also shown is the trend estimated using the AmeriFlux data (ref. 57). See Supplementary Table 2 for the data. (b) As in a, but for US-Ho1 (Howland Forest) for 1996–2020 with observations from Hollinger et al. (ref. 20). See Supplementary Table 3 for the data.

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