31. When low-temperature ice covers the Arctic Ocean there is little evaporation or global ocean water circulation. 32. The record suggests that altering the present ice cover would have profound effects on future climates. 33. They have tracked the ebb and growth of the ice cover for the past five years. 34. Ice cover is continuous only in the bays and forms floating patches in the open sea.35. The water is shallow and rocky, and ice covers the Gulf of Finland in winter months. 36. With this dependence, the Arctic Ocean experiences variations due to seasonal changes in sea ice cover . 37. The ice covers the White Sea from beginning of December to the first decade of May. 38. The floating sea ice cover of the Arctic Ocean shrank to record low levels this year. 39. During the summer sea ice covers of ocean. 40. Ice cover decreased to by 1987 1988 and to by 2005, 50 % of the 1850 area.
