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

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...

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Bibliographic Details
Main Author: Holmgren,Bjoern
Other Authors: ARCTIC INST OF NORTH AMERICA WASHINGTON D C
Format: Text
Language:English
Published: 1971
Subjects:
Meteorology
(*CLIMATE
ARCTIC REGIONS)
(*HUMIDITY
MEASUREMENT)
ATMOSPHERIC TEMPERATURE
GLACIERS
CONVECTION(ATMOSPHERIC)
SNOW
CANADA
DEVON ISLAND
Arctic
Canada
Devon Island
glacier*
Ice cap
Polar Ice Cap
Online Access:http://www.dtic.mil/docs/citations/AD0721488
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0721488
Description
Summary: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) Report of Devon Island Expedition 1961-1963. Pub. as Uppsala Univ. (Sweden). Meteorologiska Institutionen. Meddelande-110. See also Part E, AD-721 489.

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