The prevailing winds in this region, which the sea traverses longitudinally, are westerly, but the sea itself causes the formation of bands of low barometric pressure during the winter season, within which cyclonic disturbances frequently develop, while in summer the region comes under the influence of the polar margin of the tropical high pressure belt.
Dissipation was above the average when cyclonic conditions prevailed, but this seemed simply a consequence of the increased wind velocity.
2 The well-known strangely warm and dry fain- winds of Greenland occur both on the west and the east coast; they are more local than was formerly believed, and are formed by cyclonic winds passing either over mountains or down the outer slope of the inland ice.
A cyclonic circulation of the atmosphere is associated with a cyclonic circulation of the water of the ocean, as is well shown in the Norwegian Sea and North Atlantic between the Azores and Greenland.
This produces a heaping-up of warm water towards the middle of the anticyclonic current circulation between io° and 40°, and on the other hand an updraught of deep water along the outer side of the cyclonic currents.