patterns, including those in Europe? What observations in the Arctic and Antarctic are most urgently needed to improve our understanding, models, and predictions of the atmosphere, sea ice, and ocean [...] day! Consider a summer day somewhere in Europe with an Atlantic ocean breeze, and compare it to a day influenced by winds blowing from the continent. The latter will tend to be more strongly affected [...] change, simply because the continents warm more strongly than the oceans. Can we be more specific? Yes! By using a climate model in a special way, where the winds are forced to follow the observed winds,