On The Frequency of Gales in the Arctic and Antarctic

maps of the sea areas published in 1942 * for the years 1933-7 and based on ships' data available in the Meteorological Office. The data for individual months were sometimes too sparse to yield a clear picture, but the pattern of annual totals appears to be determined beyond doubt. Frequencies for the years 1930-35 at all the observing stations on land and on the islands had also been worked up from the respective yearbooks and expedition reports 2? 3? 4, 5: these values made it possible to extend the isopleth pattern over land without difficulty. (The broken lines in north-east Greenland are partly based on the indications of marine data for 1933-7