Fig. 5: Shifting position of the leading-edge Ehux bloom distribution.
From: Faster Atlantic currents drive poleward expansion of temperate phytoplankton in the Arctic Ocean
Shifting position from ocean-color PIC (a), and the 3 Lagrangian experiments (b–d) for the last 19-years (1998–2016). The comparison between the 1st Lagrangian experiment (EXP1, b) with the 2nd (EXP2, c) and the 3rd (EXP3, d) aims at estimating the relative contribution of currents (EXP2, constant temperature) vs. temperature (EXP3, constant currents) on the total Ehux poleward expansion (EXP1, varying temperature and currents). The right panel is a schematic illustration of the poleward expansion of the Ehux with the winter 4 °C isotherm (lowest temperature for a ‘regular’ Ehux growth) in blue and the summer bloom position (northern boundary) in red. The two extreme years 1998 (dashed) and 2015 (solid) are represented. Arrows indicate the contribution from temperature and/or currents keeping the same color code.
