부산대학교 도서관

Synoptic-scale surface geostrophic wind speeds near Barrow, Alaska, are, on average, about 40% higher in January than in July. By contrast, observed surface wind speeds are roughly the same at Barrow in the two months, and exceed the mean geostrophic speeds in July. It is concluded that an added pressure gradient component exists which is not recorded by the synoptic observation network. It is suggested that the land-sea temperature difference in July is responsible for this extra gradient. These winds may have a relatively large alongshore component compared with typical mid-latitude sea breezes because of continuous solar irradiance in the Arctic, large horizontal extent of the coastline, and relatively large Coriolis acceleration at high latitudes.