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 | -2.0 to 0.0 | 0.0 to 1.9 | 2.0 to 3.9 | 4.0 to 5.9 | 6.0 to 7.9 | 8.0 to 9.9 | 10.0 to 11.9 | 12.0 to 13.9 | 14.0 to 15.9 | 18.0 to 19.9 | 20.0 to 21.9 | 22.0 to 23.9 | 24.0 to 25.9 | 26.0 to 27.9 | 28.0 to 29.9 | No data | Arid and low water use | Low (<10%) | Low-medium (10-20%) | Medium-high (20-40%) | High (40-80%) | Extremely high (>80%) | Settled by 400 CE | Settled by 800 CE | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Alaska | 0.243% | 0.756% | 0.368% | 0.132% | 87.9% | 0.193% | 0.154% | 1.32% | |||||||||||||||||
Arizona | 3.34% | 9.37% | 6.97% | 0.448% | 4.52% | ||||||||||||||||||||
Utah | 20.8% | 13.7% | 0.313% | 0.420% | 49.5% | ||||||||||||||||||||
Yukon | 0.923% | 99.0% | |||||||||||||||||||||||
Northwest Territories | 0.540% | 0.342% | 3.62% | ||||||||||||||||||||||
District of Columbia | 100% | ||||||||||||||||||||||||
Florida | 0.797% | 0.110% | 0.317% | 0.665% | 10.4% | 12.0% | 0.279% | 0.266% | 0.590% | ||||||||||||||||
Idaho | 0.772% | 13.8% | 28.4% | 8.83% | 44.9% | ||||||||||||||||||||
New Hampshire | 17.2% | 33.7% | 40.5% | 8.46% | |||||||||||||||||||||
Rhode Island | 4.89% | 0.183% | 86.5% | 6.09% | |||||||||||||||||||||
Vermont | 7.27% | 88.3% | 4.41% | ||||||||||||||||||||||
Washington | 0.825% | 72.6% | 3.37% | 5.42% | 0.287% | 6.53% | |||||||||||||||||||
Wyoming | 21.7% | 0.541% | 70.3% | ||||||||||||||||||||||
Nunavut | 0.158% | 2.12% | 0.979% | 18.2% | |||||||||||||||||||||
Montana | 28.7% | 2.60% | 14.6% | 5.24% | 35.2% | ||||||||||||||||||||
Maine | 0.534% | 94.9% | 2.65% | 0.228% | 0.817% | ||||||||||||||||||||
North Dakota | 7.38% | 3.22% | 4.45% | 0.249% | 9.67% | 36.7% | |||||||||||||||||||
Kentucky | 76.6% | 17.7% | 5.68% | ||||||||||||||||||||||
Nova Scotia | 1.84% | 0.489% | 0.275% | 0.472% | 0.182% | 80.1% | |||||||||||||||||||
Virginia | 0.725% | 11.9% | 0.775% | 16.4% | 1.64% | ||||||||||||||||||||
Delaware | 1.06% | 0.105% | 37.7% | 61.1% | |||||||||||||||||||||
Prince Edward Island | 1.54% | 5.18% | 98.5% | ||||||||||||||||||||||
Saskatchewan | 4.25% | 59.9% | 2.62% | 2.54% | 2.67% | 0.868% | |||||||||||||||||||
Mississippi | 74.5% | 1.57% | 23.9% | ||||||||||||||||||||||
West Virginia | 63.6% | 17.6% | 14.6% | ||||||||||||||||||||||
Nebraska | 0.605% | 3.54% | 22.3% | 73.5% | |||||||||||||||||||||
Texas | 0.214% | 4.07% | 3.41% | 2.84% | 1.94% | 22.5% | 2.71% | ||||||||||||||||||
Missouri | 45.5% | 14.9% | 0.131% | 5.37% | |||||||||||||||||||||
Louisiana | 1.00% | 54.5% | 20.6% | 5.75% | |||||||||||||||||||||
North Carolina | 0.239% | 0.183% | 0.286% | 0.116% | 12.2% | 54.7% | 3.14% | 0.982% | |||||||||||||||||
Oregon | 14.3% | 48.2% | 11.8% | 4.82% | 0.772% | 0.847% | |||||||||||||||||||
New Brunswick | 0.647% | 0.219% | 99.5% | ||||||||||||||||||||||
Alabama | 0.114% | 92.6% | 5.45% | 0.987% | |||||||||||||||||||||
New Mexico | 30.3% | 0.128% | 7.32% | 21.7% | |||||||||||||||||||||
Kansas | 0.176% | 1.82% | 13.8% | 68.4% | |||||||||||||||||||||
Wisconsin | 0.545% | 5.67% | 25.0% | 40.8% | 9.68% | ||||||||||||||||||||
British Columbia | 1.06% | 92.0% | 1.55% | 0.285% | |||||||||||||||||||||
Newfoundland and Labrador | 0.162% | 1.04% | 0.607% | 74.5% | |||||||||||||||||||||
New Jersey | 0.163% | 1.14% | 0.162% | 3.07% | 94.0% | 1.76% | |||||||||||||||||||
South Carolina | 0.748% | 24.6% | 36.2% | ||||||||||||||||||||||
Michigan | 1.89% | 56.0% | 3.00% | 4.63% | 9.70% | ||||||||||||||||||||
Alberta | 3.52% | 56.8% | 0.267% | 4.01% | 3.67% | 11.4% | |||||||||||||||||||
Connecticut | 0.194% | 0.460% | 29.6% | 24.9% | 23.8% | 1.35% | |||||||||||||||||||
Pennsylvania | 1.42% | 27.8% | 49.9% | 3.96% | |||||||||||||||||||||
Colorado | 0.795% | 9.40% | 85.2% | ||||||||||||||||||||||
Nevada | 8.21% | 0.731% | 1.40% | 0.413% | 2.80% | 24.0% | |||||||||||||||||||
Massachusetts | 1.32% | 2.66% | 0.220% | 0.206% | 0.166% | 33.6% | 8.30% | 30.7% | |||||||||||||||||
Georgia | 0.230% | 8.71% | 47.0% | 37.9% | |||||||||||||||||||||
New York | 0.265% | 0.344% | 25.4% | 5.89% | 56.3% | 5.19% | 0.401% | ||||||||||||||||||
Maryland | 2.09% | 0.151% | 4.45% | 64.3% | 1.05% | 8.49% | |||||||||||||||||||
Québec | 0.165% | 99.1% | 0.240% | ||||||||||||||||||||||
Manitoba | 0.656% | 83.1% | 11.7% | 2.04% | 1.39% | ||||||||||||||||||||
Oklahoma | 11.4% | 5.60% | 4.28% | 17.9% | 30.0% | ||||||||||||||||||||
Tennessee | 90.1% | 5.50% | |||||||||||||||||||||||
Ontario | 0.375% | 97.2% | 1.67% | 1.13% | |||||||||||||||||||||
California | 0.120% | 0.206% | 0.688% | 12.5% | 0.232% | 17.8% | 2.26% | 1.00% | |||||||||||||||||
Arkansas | 12.6% | 46.8% | 33.2% | 6.01% | |||||||||||||||||||||
South Dakota | 32.7% | 3.47% | 37.3% | 22.0% | |||||||||||||||||||||
Ohio | 3.42% | 0.721% | 29.0% | ||||||||||||||||||||||
Indiana | 0.434% | 1.19% | 8.61% | 4.78% | |||||||||||||||||||||
Minnesota | 21.0% | 3.81% | 13.1% | 23.4% | 22.0% | ||||||||||||||||||||
Iowa | 26.6% | 12.5% | 44.0% | 16.3% | 0.628% | ||||||||||||||||||||
Illinois | 30.9% | 0.187% | 44.1% | 9.75% | |||||||||||||||||||||
Hawaii | 10.0% | 0.778% | 4.46% | 7.82% | 2.28% | 58.3% | |||||||||||||||||||
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