Fig. 5: Annual cycles in daily NPP for 1970, 2020, and 2100 at four locations.

Maps of the (a) change in the length of the phytoplankton bloom from 1970 to 2100 and (b) change in the standard deviation (S.D.) in the length of the phytoplankton bloom between 1970 and 2100, with circles demonstrating the location of the featured grid cells. Mean (line) and S.D. (shaded region) daily NPP (g C m−2 d−1) in 1970 (blue), 2020 (purple) and 2100 (red) for individual grid cells in (c) the Bering Sea (61.0∘N, 178.2∘W), (d) the Chukchi Sea (72.5∘N, 171.0∘W), (e) Hudson Bay (58.9∘N, 84.4∘W), and (f) the central Arctic (85.9∘N, 70.6∘W), with mean bloom start and end (dots) and S.D. in bloom start and end (lines) for 1970 (blue), 2020 (purple), and 2100 (red) above.