Extended Data Fig. 7: Heat loss during the 2016 polynya estimated from hydrographic observations.
From: Antarctic offshore polynyas linked to Southern Hemisphere climate anomalies
Heat flux estimates (n = 31; diamonds at the bottom correspond to histogram above) computed using potential temperature profiles from floats 5904468 and 5904471 following the opening of the 2016 polynya (see Methods section ‘Polynya heat flux estimates’). The dashed red line marks the average open-water ocean-atmosphere turbulent heat flux within the 2016 opening, estimated using a bulk flux algorithm as 252 W m−2 (see Methods section ‘Atmospheric reanalysis’).
