Download - Comments on Sea Ice in the Arctic Climate Impact Assessment and Future Needs for Coastal Alaska
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The State of Arctic Sea IceGary Hufford, NOAA/NWS Alaska Region
Lawson Brigham, Executive DirectorArctic Research Commission
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Comments on Sea Ice in the Arctic Climate
Impact Assessment and Future Needs for Coastal Alaska
PRIDE Alaska Coastal Climatologies Wind/Wave WorkshopAnchorage, Alaska 2 - 3 August 2005
Lawson BrighamDeputy Director, U.S. Arctic Research Commission
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Sea IceSea Ice Observational data show Observational data show a decrease of coveragea decrease of coverage
• Decrease isDecrease is largest inlargest in summersummer
• Decrease isDecrease is largest sincelargest since late 1980slate 1980s
Sea
Ice
Exte
nt (m
illio
n km
2 )
16151413121110
9876543210
Sea
Ice
Exte
nt (m
illio
n km
2 )
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16 September 200216 September 2002
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16 September 200316 September 2003
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16 September 200416 September 2004
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16 September 200216 September 2002 16 September 200316 September 2003 16 September 200416 September 2004
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Arctic Climate Impact AssessmentArctic Climate Impact AssessmentClimate model projections of sea ice extent:Climate model projections of sea ice extent:
2000 - 21002000 - 2100
MarchMarch SeptemberSeptember
MAR SEPT
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Arctic Climate Impact Assessment
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‘Arctic Sea Ice Atlas of the Future’Projected Ice Extent – Hadley Model
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Sea Ice in Alaska’s Coastal Seas
• 23 June 2005 – Established working group
• Represented – USARC, AOOS, NWS (Anchorage), UAF, NIC, NSIDC, PMEL, USFWS, CRREL, UW/APL
• Issue – Lack of long-term, robust sea ice data set for Alaska’s coastal seas
• Needs - Arctic Climate Impact Assessment- Arctic Marine Shipping Assessment- Integrated Bering Sea Ecosystem Research- Many Stakeholders
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Examples of Ongoing Sea Ice Work
• NWS – Regional sea ice charts
• NIC – Global charts; George Mason U. digitizing for usable database
• NSIDC – W. Dehn collection ~ 7000 charts (1953 – 1986)
• PMEL – SAR data analysis
• CRREL – Range of research
• UAA/MMS – Sea ice atlas
• UAF – Spring leads/landfast; energy + mass balance; HF radar; ice thickness by airborne sensing
• UW/APL – Fast ice; range of research