February 28, 2007
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FROM VOLUME 6, NUMBER 12, DECEMBER 1993
IMPACTS OF CLIMATE CHANGE: ICE COVER
Recent Sea-Ice Retreat West of the Antarctic Peninsula,"
S.S. Jacobs, (Lamont-Doherty Earth Observ., Palisades NY 10964),
J.C. Comiso, Geophys. Res. Lett., 20(12),
1171-1174, June 18, 1993.
A record decrease in sea ice extent was observed in the
Bellinghausen Sea from mid-1988 through early 1991. Its
coincidence with record high regional air temperatures makes the
event a potential analogy for future climate change.
of Characteristics of Arctic Sea Ice in the Case of a Doubling of
Carbon Dioxide," M.P. Kolomeev, S.L. Malyshev, Soviet
Meteor. & Hydrol., 4, 34-40 (p. 45 Russian), 1992.
A 3-D energy balance model predicts that summer ice cover area
would decrease from 6.2 to 1.1 million km2, and would remain only
north of Greenland. Winter ice cover area would decrease by 18%
and mean thickness in the zone of 80-90·N would decrease
Variability of Landfast Ice Thickness in the Canadian High
Arctic, 1950-89," R.D. Brown (Can. Clim. Ctr., LaSalle
Acad., Block E, 373 Sussex Dr., Ottawa ON K1A 0H3, Can.), P.
Cote, Arctic, 45(3), 273-284, Sep. 1992.
A heat-transfer model showed that snow insulation explained
30-60% of variability, other snow-related processes 15-30%, and
annual variation in air temperature less than 4%. However, a
response surface sensitivity analysis has indicated that landfast
ice would be more sensitive to air temperature variations under a
warmer, snowier environment.
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