Earth system models underestimate carbon fixation by plants in the high latitudes.

Nat Commun · 2019 · PMC6385346 · PMID 30792385

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a decreasing trendno p-value reported

Analyses of long-term measurements at NHL stations, Point Barrow (BRW, Alaska) and Alert Nunavut (ALT, Canada), reveal that this seasonal cycle has changed over time, dominated by a decreasing trend in the annual CO 2 minimum (Fig. 3a, b ).

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