News & Stories

Across the globe, snow and ice play a vital role in regulating Earth’s climate and providing freshwater resources to people, plants, and animals.

As Earth’s frozen regions change rapidly, NSIDC is committed to growing its research and open access data to better understand these changes. Read about NSIDC research and its contribution to science and policy making. Check out spotlights on how to use NSIDC data, tools, and resources. Learn about how we steward data and collaborate with scientists and organizations across the world to understand how the frozen parts of Earth affect the rest of the planet and impact society.

News and stories

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Analysis - Sea Ice Today

The rate of ice growth for the first half of November 2015 was quite rapid, but the pace of ice growth slowed during the second half of the month, only to increase again at the end of the month.

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Spotlight
Observing sea ice from space is sometimes tricky. Scientists adjust for such misinterpretations by creating masks based on previous sea ice conditions to conceal problem areas and highlight areas they know contain valid ice. At NSIDC, scientists recently discovered their sea ice masks for passive microwave satellites could use a fresh update.
Analysis - Sea Ice Today

While Arctic sea ice extent is increasing, total ice extent remains below average, tracking almost two standard deviations below the long-term average.

Figure 3. The top graph shows annual melt extent anomalies (difference from average in thousands of square kilometers) for 1978 to 2015. The bottom graph shows daily growth of melt area for 1978 to 2015, showing the four most recent years as colored lines.
Analysis - Ice Sheets Today
Melt extent in Greenland was above average in 2015, ranking 11th highest in the 37 year record from satellite data. Overall, climate patterns favored intense melting in the north and northwestern parts of the ice sheet, and relatively cool conditions in the southeast.
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Feature Story
NSIDC research scientist Julienne Stroeve wanted to know the quality of current predictions; so she compared forecasts to actual observations. “Just how well are we doing?” Stroeve asked.