Fig. 7: Thermodynamic and dynamical coupling diagnostics for CCA 1–4 (Oct–Mar, 1950–2024). | npj Climate and Atmospheric Science

Fig. 7: Thermodynamic and dynamical coupling diagnostics for CCA 1–4 (Oct–Mar, 1950–2024).

From: Drivers of winter Arctic sea ice variability

Fig. 7: Thermodynamic and dynamical coupling diagnostics for CCA 1–4 (Oct–Mar, 1950–2024).The alternative text for this image may have been generated using AI.

a–d Upward turbulent heat flux composite difference (high minus low PC years; sign convention: ocean→ atmosphere positive). Stippling denotes grid points significant at the 95% confidence level. e–h Downward longwave radiation (STRD) composite difference (atmosphere→surface positive). Stippling denotes grid points significant at the 95% confidence level. i–l Z850 composite difference with 850-hPa wind anomalies. Stippling denotes grid points significant at the 95% confidence level; vectors are plotted south of 84°N for clarity.

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