Climate and Energy Exchange on a Sub-Polar Ice Cap in Summer. Part D. On the Vertical Turbulent Fluxes of Water Vapour at Ice Cap Station,
Abstract
The vertical turbulent flux of water vapour E at the snow surface is calculated by means of three-hourly determinations of wind speed at a low level, (0.5 - 1.0 m); water-vapour pressure at 1.5 m; and temperature profiles for indirect determination of the temperature and water-vapour pressure at the snow surface. The temperature of the snow surface is determined by extrapolation of temperature-profiles down to the snow surface. The method is 'calibrated' by reference to the conditions over melting snow. Humidity profiles measured with Assmann psychrometers at different levels are also utilized in the analysis of the humidity-field in the layer below the 1.5 m level. The discussion includes a comparison with a semi-empirical model suggested by Sverdrup. The variations of E in different weather situations are described. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1971
- Accession Number
- AD0721488
Entities
People
- Bjoern Holmgren