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As climate changes, how do Earth's frozen areas affect our planet and impact society?

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Feature Story
In September 2019, the research vessel Polarstern set off to drift with sea ice and study all aspects of the Arctic climate system for 13 months. NSIDC scientist Julienne Strove joined the international team of researchers on the coldest, darkest portion of the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC). This is how she prepared.
Snow-disappearance anomaly map
Analysis - Snow Today
Snow-covered area and snow cover days in the Western United States were below average in May 2020. The vast majority of snow monitoring sites in the Western United States no longer reported a snowpack by the end of the month.
Analysis - Sea Ice Today

The seasonal decline of Arctic sea ice extent proceeded at a near-average pace in May. Extent did not approach record lows but remained well below the 1981 to 2010 average.

Snow-percentage graphs for study sites
Analysis - Snow Today
Snow-covered area and snow cover days were near average in April 2020. Snow-covered area continued to decline in April 2020 but was bolstered by storms in California in early April and in Colorado in late April.
Analysis - Sea Ice Today

The pace of sea ice decline in April was near average, while sea ice extent ranked fourth lowest in the satellite record.