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Arctic Report Card: Update for 2021

Rapid and pronounced warming continues to drive the evolution of the Arctic environment

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Arctic Report Card 2021

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Description: Colors show the age of sea ice floating in the Arctic Ocean. The darkest blue areas on the map show seasonal or first-year ice, which formed during the most recent winter. White areas show where ice is more than four years old.

Scientists estimate the age of sea ice by combining satellite observations of ice locations and extent with buoy data on winds and motion. The temporal coverage for this data set is weekly data from January 1984 through December 2020. Data for 2021 comes from the Quicklook Arctic Weekly EASE-Grid Sea Ice Age data product.

The input ice motion data used for this data set is derived from the Polar Pathfinder daily 25 km EASE-Grid Sea Ice Motion Vectors Version 4 data set.

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Issued annually since 2006, the Arctic Report Card is a timely and peer-reviewed source for clear, reliable and concise environmental information on the current state of different components of the Arctic environmental system relative to historical records. The Report Card is intended for a wide audience, including scientists, teachers, students, decision-makers and the general public interested in the Arctic environment and science.

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