hudson bay and approaches - star.nesdis.noaa.gov · hudson bay and approaches 50% d h i d 197150%...
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Hudson Bay and Approaches Hudson Bay and Approaches 50% d h i d 197150% d h i d 1971 2006200650% decrease over the period 197150% decrease over the period 1971--20062006Historical Total Accumulated Ice Coverage 0625 Historical Total Accumulated Ice Coverage 0625 –– 10151015
0.25Hudson Bay / Baie d`Hudson
0.20
mal
isée
0.15
ture
des
gla
ces
norm
short name / nom en bref: HUDBAY
source region / région source: HB / BH
0.10
e co
vera
ge /
couv
ert
ice season (mmdd) / saison des glaces (mmdd): 0625-1015
averages based upon / les moyennes basées sur: 1971-2000
by / par:
0.05
norm
alis
ed ic
by / par: CIS / SCG
0.00
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
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2000
2001
2002
2003
2004
2005
2006
season / saison
Murmansk to Churchill – The Arctic Bridge
Omnitrax
Implications for CanadaImplications for CanadaImplications for CanadaImplications for Canada•• Increased access to Hudson Bay and Port of Increased access to Hudson Bay and Port of
ChurchillChurchill•• Similar to Gulf of St Lawrence by midSimilar to Gulf of St Lawrence by mid--centurycentury
Increase from 13 to 20 weeks in 35 years
Sea Ice InterSea Ice Inter--Annual Variability is SignificantAnnual Variability is Significant
B f t SBeaufort SeaLancaster Sound
P l S dPeel Sound
We have experienced years in the past where a given year can have 3 times more or lesscan have 3 times more or less ice than the previous year
GCM Projections for Northern HemisphereGCM Projections for Northern Hemisphere
MAR SEPTSeptemberMarch
• Canadian model has ice-free summers by 2050
• Main ensemble of models delays this until next century