Sea Ice Extent
WorldPhysical EnvironmentMean extent of Arctic and Antarctic sea ice between 1981 and 2010
NSIDCA world map shows the sea ice extent at the beginning of 2022, with the highest coverage in the Arctic region around Canada, Greenland, and Russia, and some presence in the Antarctic region. These regions are highlighted in light blue.
Sea Ice Extent | Risk level 1 (very low) | Risk level 2 | Risk level 3 (low) | Risk level 4 | Risk level 5 (moderate) | Risk level 6 | Hypoxic | Eutrophic | |
|---|---|---|---|---|---|---|---|---|---|
Arizona | 3.96% | 2.03% | 39.3% | 1.13% | 0.402% | 1.94% | |||
Utah | 2.19% | 24.0% | 59.1% | 0.958% | |||||
Yukon | 55.1% | 5.40% | 0.314% | ||||||
Northwest Territories | 38.2% | 1.33% | 0.447% | ||||||
District of Columbia | 100% | ||||||||
Idaho | 13.6% | 8.18% | 32.7% | 2.94% | |||||
Vermont | 100% | ||||||||
Wyoming | 4.91% | 55.5% | 0.561% | 1.00% | |||||
Nunavut | 0.158% | 0.396% | |||||||
Montana | 0.103% | 4.94% | 33.0% | 0.115% | |||||
North Dakota | 0.112% | 0.133% | 99.8% | ||||||
Kentucky | 35.7% | 64.2% | |||||||
Saskatchewan | 0.108% | 7.01% | 1.30% | 0.348% | |||||
West Virginia | 92.7% | 3.42% | 3.86% | ||||||
Nebraska | 2.05% | 97.8% | |||||||
Missouri | 0.633% | 95.9% | 1.63% | ||||||
New Brunswick | 99.4% | ||||||||
New Mexico | 12.1% | 35.9% | 20.3% | 0.704% | 1.02% | ||||
Kansas | 99.9% | ||||||||
Wisconsin | 8.12% | 88.8% | |||||||
British Columbia | 86.0% | 0.217% | 0.271% | ||||||
Michigan | 51.8% | 0.907% | 14.6% | 0.520% | |||||
Alberta | 75.6% | 3.33% | 0.547% | ||||||
Pennsylvania | 39.1% | 60.4% | 0.421% | ||||||
Colorado | 0.180% | 45.2% | 14.2% | ||||||
Nevada | 0.533% | 16.8% | 45.2% | 2.15% | |||||
Québec | 69.8% | 0.250% | |||||||
Manitoba | 81.9% | 8.24% | 0.169% | 0.546% | 0.815% | ||||
Oklahoma | 0.595% | 1.38% | 56.8% | 10.9% | |||||
Tennessee | 0.102% | 89.8% | 7.28% | ||||||
Ontario | 98.7% | 0.766% | |||||||
Arkansas | 94.1% | 5.38% | |||||||
South Dakota | 0.217% | 99.7% | |||||||
Ohio | 2.41% | 0.104% | 97.3% | ||||||
Indiana | 4.47% | 95.5% | |||||||
Minnesota | 0.208% | 99.8% | |||||||
Iowa | 99.9% | ||||||||
Illinois | 100% | ||||||||
Alaska | 35.0% | 0.129% | 0.194% | 1 | |||||
Florida | 89.2% | 6.71% | 43 | 11 | |||||
New Hampshire | 100% | 1 | |||||||
Rhode Island | 95.3% | 3 | |||||||
Washington | 13.7% | 37.3% | 29.7% | 1.66% | 7 | 3 | |||
Maine | 99.4% | 3 | |||||||
Nova Scotia | 79.0% | 2 | |||||||
Virginia | 14.9% | 82.6% | 1.66% | 5 | |||||
Delaware | 97.6% | 6 | 1 | ||||||
Prince Edward Island | 1.54% | 95.4% | 1 | ||||||
Mississippi | 3.08% | 18.3% | 68.7% | 1.07% | 3 | 1 | |||
Texas | 2.19% | 4.69% | 83.5% | 0.249% | 0.428% | 11 | 2 | ||
Louisiana | 1.01% | 23.5% | 68.0% | 1.27% | 6 | ||||
North Carolina | 91.0% | 0.995% | 15 | ||||||
Oregon | 8.75% | 34.0% | 16.1% | 2 | |||||
Alabama | 4.06% | 91.4% | 2.97% | 3 | 1 | ||||
Newfoundland and Labrador | 0.162% | 57.4% | 1.10% | 1 | |||||
New Jersey | 98.6% | 5 | |||||||
South Carolina | 96.9% | 3.07% | 15 | ||||||
Connecticut | 82.4% | 17.5% | 2 | ||||||
Massachusetts | 92.1% | 4.34% | 3 | ||||||
Georgia | 0.779% | 71.7% | 16.1% | 5 | 1 | ||||
New York | 80.6% | 16.2% | 5 | ||||||
Maryland | 10.9% | 87.5% | 8 | ||||||
California | 4.06% | 25.8% | 27.5% | 16.1% | 0.987% | 7 | 2 | ||
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