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The CAL FIRE Nevada Yuba Placer Unit clears roads among other rescue tasks
Feature Story
The 2023 winter brought record snowfall to California and other parts of the western United States, but unlike rain, snowfall is much more nuanced in its properties. Getting accurate snow depth data over a wide area is not easy. Read more about the challenges of garnering snow data and the tools behind snow data.
Tarfala Research Station, in northern Sweden, maintains the world's longest continuous glacier mass balance record.
News Release
Scientific researchers have made leaps and bounds in recent years gathering new data and insights on these regions, but there has been a lag in curriculum development for undergraduate students who are studying the geosciences and environmental sciences. Polar Places and Spaces (PolarPASS) seeks to fill this gap by developing a science-based curriculum to help students learn about the scientific discovery process and to connect them with far-away places that they may not have the opportunity to visit in person.
OpenAltimetry screenshot with polar projection
Spotlight
NASA’s OpenAltimetry tool allows experienced and new users alike to quickly find and download elevation data through a web browser without the need for costly software or hefty computational resources.
Glaciers, or accumulations of ice and snow that slowly flow over land, are disappearing as the planet heats up because of climate change. In this image, melt from a glacier extending from the Juneau Icefield in Alaska forms braided streams as the glacier retreats. The Global Land Ice Measurements from Space initiative is working to document disappearing glaciers.
Spotlight
Melting glaciers and ice sheets are already the biggest contributors to global sea level rise. Yet, of the approximately 200,000 glaciers in the world currently, no database exists to identify which glaciers have disappeared, and when. The Global Land Ice Measurements from Space (GLIMS) initiative, an international project designed to monitor the world's glaciers primarily using data from optical satellite instruments, aims to change that.
Line graph of monthly October ice extent for 1979 to 2023 shows a decline of 9.5 percent per decade.
Analysis - Sea Ice Today

As the long Arctic winter sets in, sea ice extent has increased at a faster than average pace. By the end of October, the ice cover had reached the Siberian coast, while open water persisted along the coasts of the Beaufort and Chukchi Seas.