Fig. 1: Characteristics of the winter 2023 Antarctic sea ice record low.
From: Understanding the drivers and predictability of record low Antarctic sea ice in austral winter 2023
Times series of observed June, July, and August (JJA) raw (million km2; left) and standardized (σ; right) SIA anomalies between 1979 and 2023 (A). Mean SIC anomalies in JJA 2023 in observations (B) and CESM2-NUDGE (C). Magenta and black contours indicate climatological average (1980–2020) and JJA 2023 sea ice edge (15% concentration), respectively. SST anomalies in JJA 2023 in observations (D) and CESM2-NUDGE (E), and mean SLP and near-surface wind anomalies in JJA 2023 in ERA5 (F) and CESM2-NUDGE (G). Stacked bar-charts show the monthly time series of SIA anomaly (million km2) for each Antarctic sector (defined in C) between 2016-01 and 2023-08 in observations (H) and CESM2-NUDGE (I). The black lines shows the total Antarctic SIA anomaly (million km2).
