Abstract
Glacier studies have been made in Greenland since the 1970s to plan hydro-electric power. However, there is also public concern about the extra melting from the Greenland ice sheet and local glaciers that may occur under a warmer climate due to the 'greenhouse effect' (Fenger & Laut, 1989). The increase in melting will cause a rapid retreat of glaciers over the next 100 years and could give serious problems for large hydro-electric power stations. More seriously, glacier retreat in Greenland will also cause a rise in world sea level. Greenland is therefore a possible hazard to all low-lying land, including Denmark.
Highlights
There is public concern about the extra melting from the Greenland ice sheet and local glaciers that may occur under a warmer climate due to the 'greenhouse effect' (Fenger & Laut, 1989)
To anticipate the tindings of this body, it ean be said that a sea level rise of under a metre may occur in the 100 years
Such assessments are good enough to show the potential threat of sea level rise but a precise forecast needs much more data
Summary
S.l. melting is calculated with an energy balance model which includes the physics of the melting process (Braithwaite & Olesen, in press). The model describes ablation under present climate quite well, while a temperature rise of 5°e nearly doubles the melting at the ice sheet margin A key point in the discussion of sea level rise is the ous deficiencies in this estimate Both the assumption that glacier melting increases with higher area of the ablation zone, and the length of melting temperatures. This is confirmed by analysis of data from season, will increase with temperature. 1) hand, the melting in the higher parts of the ice sheet will (Braithwaite & Olesen, 1989a). The solution will probably be a blend of remote sensing from satellites and data collection in sparse stake nets
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