Enhance seasonal amplitude of atmospheric CO₂ by the changing Southern Ocean carbon sink.

Moreover, in the southern high latitudes, the absence of a significant trend in the AMP before 2000 is consistent with a much lower to nearly absent trend in the seasonal difference in P co 2 during 1986–1999, but the high inconsistency (−0.3 [−2.0, 1.4] μatm decade −1 ), likely emanating from the sparser measurements, makes this conclusion less robust (fig.

also in 9,775 other papers

This leads to the negative trend in the seasonal difference in P co 2 before 2000 and a positive trend after 2000.

also in 11,005 other papers