Model evaluation reveals a winter warm bias over Arctic sea ice driven by excess atmospheric heat transport, highlighting key priorities for future polar climate projections.
Key Points
Winter near-surface air temperature biases reach +3.1 °C in the coupled climate model, whereas atmosphere-only runs show a minor +0.4 °C warm anomaly.
Assessment using multiple observational datasets incorporated in situ measurements and ERA5, applying a linear correction across the Arctic perennial ice zone.
Highlights the need to correct excess poleward atmospheric heat transport identified by energy budget analysis, supporting improved Arctic climate projections.
Cite This Study
Vancoppenolle et al. (2025) studied this question.