Extended Data Fig. 4: Cumulative GPP changes and their modulation through negative GPP extremes between the 2000–2016 and 1982–1998 study periods.
From: Increasing impact of warm droughts on northern ecosystem productivity over recent decades
a, c, Cumulative changes in GPP (ΔGPP_c (PgC); expressed as the differences in cumulative GPP between the study periods) driven by a, Climate only (all datasets) and c, Climate + CO2 fertilization (TRENDY models only; see Methods) between the two periods over regions with consistent increased GPP extremes. b, d, Corresponding modulation (%) of b, Climate only and d, Climate + CO2 fertilization ΔGPP_c through GPP extremes calculated as (Δ Extremes)/(Δ GPP_c) where ΔExtremes is the difference of cumulative negative GPP extremes between the periods. Grey areas mark regions where the datasets differ in the direction of GPP modulation.
