Climate and Energy Exchange on a Sub-Polar Ice Cap in Summer. Part A. Physical Climatology,
Abstract
The analysis is based on climatological and micro-meteorological measurements made mainly at an elevated observation-place (Ice Cap Station, 1.3 km above M.S.L.) in the area of superimposed ice formation on the northwest slope of the ice cap. Comparative measurements were temporarily made in different parts of the ice cap. The structure of the wind-field over the ice cap, especially in situations with katabatic winds, was investigated by means of pilot balloons. In the middle of the summer the low-lying parts of the ice cap and the outlet glaciers are invaded by air of temperatures above freezing. Since the temperature of the ice cannot rise further than to melting-point, an advection inversion develops above the surface. Over the high-lying parts of the ice cap the air temperature in general stays well below freezing. Here the radiation climate is the factor which dominates the temperature stratification in the surface layer. At Ice Cap Station the conditions are intermediate in this respect; air temperatures above freezing were obtained in about 40% of all temperature readings at screen level in July. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1971
- Accession Number
- AD0721546
Entities
People
- Bjoern Holmgren