Fig. 5: Relationships of Antarctic sea ice extent (SIE) anomaly with lower cell strength (LCS) anomaly, Southern Annual Mode (SAM) index, and NINO3.4 index in SPEAR_MED runs.
From: Role of anthropogenic forcing in Antarctic sea ice variability simulated in climate models
a Scatterplots of Antarctic SIE anomalies (in 106 km2) against the LCS anomalies (in Sv) on a density space for SPEAR_MED natural (blue), historical (black), and SSP585 (red) forcing runs. We used anomalies for 1985–2014 period of the natural and historical forcing runs and for 2071–2100 period of the SSP585 forcing run. Regression line and equation for each of three runs are shown in the panel. b, c Same as in (a), but for the SAM index (in hPa) and NINO3.4 index (in °C).
