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Instantaneous Glacierization, the Rate of Albedo Change, and Feedback Effects at the Beginning of an Ice Age

Published online by Cambridge University Press:  20 January 2017

R. M. Koerner
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Abstract

A study of the average annual- and melt-season albedos for the northwest side of the Devon Island Ice Cap shows that there is no step in the average albedo either at the equilibrium or firn line. Similarly, during a period of increasing glacierization there is nowhere any dramatic increase in the average annual- or melt-season albedo with time as the equilibrium line gradually moves downslope. This means that the inception of ice caps and permanent snowfields does not make a significant change to the rate of increasing albedo and its associated feedback effects during the same period of glacierization. The extension of the annual period of snowcover generally is much more important to the feedback process (by increasing albedo) than the specific lowering of the equilibrium line. A decreased variability of summer climate, and hence the disappearance of “anomalously” warm summers, may be an integral part of the glacierizing process.

Type
Research Article
Information
Quaternary Research , Volume 13 , Issue 2 , March 1980 , pp. 153 - 159
Copyright
University of Washington

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References

Andrews, J.T. Barry, R.G. Bradley, R.S. Miller, G.H. Williams, L.D., (1972). Past and present glaciological responses to climate in eastern Baffin Island. Quaternary Research 2 303 314 Google Scholar
Alt, B., (1978). Synoptic climate controls of massbalance variations on Devon Island ice cap. Arctic & Alpine Research 10 61 80 Google Scholar
Benson, C.S., (1961). Stratigraphic studies in the snow and firn of the Greenland ice sheet. Folio Geographica Danica, Tom. 9 13 37 Google Scholar
Bray, J.R., (1976). Volcanic triggering of glaciation. Nature (London) 260 414 415 Google Scholar
Dahlgren, L., (1978). Solar Radiation Climate Near Sea Level in the Canadian Arctic Archipelago Meteorologiska Institutionen Uppsala 119 Universitet, Middelande Nr 121 Google Scholar
Flint, R.F., (1943). Growth of the North American ice sheet during the Wisconsin Age. Geological Society of America Bulletin 54 325 362 Google Scholar
Flohn, H., (1974). Background of geophysical model of the initiation of the next glaciation. Quaternary Research 4 385 404 Google Scholar
Holmgren, B., (1971). Climate and Energy Changes on a Sub-Polar Ice Cap in Summer, Part F. On the Energy Exchange of the Snow Surface at Ice Cap Station Meteorologiska Institutionen, Uppsala Universitet 53 Meddelande Nr. 112 Google Scholar
Ives, J.D., (1957). Glaciation of the Torngat mountains. Northern Labrador. Arctic 10 67 87 Google Scholar
Ives, J.D. Andrews, J.T. Barry, R.G., (1975). Growth and decay of the Laurentide Ice Sheet and comparisons with Fenno-Scandinavia. Naturwissenschaften 62 118 125 Google Scholar
Keeler, C.M., (1964). Relationship between Climate Ablation and Run-Off on the Sverdrup Glacier 1963, Devon Island, N. W. T.. Arctic Institute of North America, Research Paper No. 27 Google Scholar
Koerner, R.M., (1966). A Mass Balance Study—The Devon Island Ice Cap. Doctoral dissertation University of London England Google Scholar
Koerner, R.M., (1971). The mass balance of the Devon Island ice cap, Northwest Territories, Canada, 1961–1966. Journal of Glaciology 9 325 336 Google Scholar
Koerner, R.M., (1977). Devon Island ice cap: Core stratigraphy and paleoclimate. Science 196 15 18 CrossRefGoogle ScholarPubMed
Koerner, R.M., (1979). Accumulation, Ablation, and Oxygen Isotope variations from the Queen Elizabeth Island ice caps, Canada. Journal of Glaciology 22 25 42 Google Scholar
Lamb, H.H., (1972). Climate: Present, Past and Future Vol. 1 613 Fundamentals and climate now Google Scholar
Locke, C.W. Locke, W.W. III (1977). Little Ice Age snow-cover extent and paleoglaciation thresholds: North-central Baffin Island, N. W. T., Canada. Arctic & Alpine Research 9 291 300 Google Scholar
McIntyre, A. Ruddiman, W.F. Jantzen, R., (1972). Southward penetration of the North Atlantic polar front: Faunal and floral evidence of the largescale surface movements over the last 225,000 years. Deep-Sea Research 19 16 77 Google Scholar
Meier, M.F. Tangborn, W.V., (1965). Net budget and flow of South Cascade Glacier, Washington. Journal of Glaciology 5 547 566 CrossRefGoogle Scholar