Fig. 4: Backward trajectory map and reconstructions of associated physical properties.
From: Unprecedented decline of Arctic sea ice outflow in 2018
a trajectories of sea ice floes which arrived at Fram Strait in May, 2011–2017 and 2018, and reconstructions of b ice thickness, c 2 m air temperature, and d latitude along the trajectories back in time. The magenta line in panel a shows Fram Strait. The right edge of the panels b–d denotes arrivals of the ice floes at Fram Strait, while the left edge denotes 2.5 year (30 months) before the arrival. Corresponding months are shown at the top of the panels b–d. The ice thickness in panel b shows an average of independent reconstructions by three different ice thickness products (AWI CS2smos, Univ. Bristol, and NERC-CPOM) derived from CS2smos/CS2. The 2 m air temperature in panel c is obtained from ERA5. See method section for a description.
