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Randolph Glacier Inventory - A Dataset of Global Glacier Outlines ...
The Randolph Glacier Inventory (RGI) is a global set of glacier outlines; it is intended as a snapshot of the world’s glaciers. This data set provides a single outline for each glacier and is produced in coordination with the Global Land Ice Measurements from Space (GLIMS) initiative.
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Glacier Quick Facts | National Snow and Ice Data Center
A glacier is an accumulation of ice and snow that slowly flows over land. Alpine glaciers are frozen rivers of ice, slowly flowing under their own weight down mountainsides and into valleys. Ice sheets exist only on Greenland and Antarctica, and they spread out in broad domes in multiple directions. A group of people explore the Perito Moreno ...
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Science of Glaciers | National Snow and Ice Data Center
The Taylor Glacier is an Antarctic glacier about 54 kilometers (34 miles) long, flowing from the plateau of Victoria Land into the western end of Taylor Valley. — Credit: Eli Duke/Flickr. Valley commonly originate from mountain glaciers or icefields, these glaciers spill down valleys, looking much like giant tongues.
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Learn - National Snow and Ice Data Center
Witness the beauty of Earth's disappearing features, captured by NSIDC staff and partners. Quick facts, basic science, and information about snow, ice, and why the cryosphere matters The cryosphere includes all of the snow and ice-covered regions across the planet.
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The story is in the ice: Documenting climate change through the Extreme ...
Eventually, more than 70 time-lapse cameras were placed in the field in Alaska, Glacier National Park in Montana, Iceland, Greenland, Nepal, Austria, Antarctica, Canada, and South Georgia Island. They were programmed to snap continuous shots of glaciers during every hour of daylight for months or years on end.
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Why Glaciers Matter - National Snow and Ice Data Center
Why they matter. Glaciers, slow-moving rivers of ice, have sculpted mountains and carved valleys throughout Earth's history. They continue to flow and shape the landscape in many places today. But glaciers affect much more than the landscape. Glacier melt delivers nutrients into lakes, rivers, and oceans. Those nutrients can drive blooms of ...
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Glaciers - National Snow and Ice Data Center
A glacier is an accumulation of ice and snow that slowly flows over land. At higher elevations, more snow typically falls than melts, adding to its mass. Eventually, the surplus of built-up ice begins to flow downhill. At lower elevations, there is usually a higher rate of melt or icebergs break off that removes ice mass.
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World Glacier Inventory - NSIDC
The World Glacier Inventory (WGI) contains information for over 130,000 glaciers. Inventory parameters include geographic location, area, length, orientation, elevation, and classification. The WGI is based primarily on aerial photographs and maps with most glaciers having one data entry only. Hence, the data set can be viewed as a snapshot of ...
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GLIMS - National Snow and Ice Data Center
GLIMS is an international project to inventory the world’s glaciers and to create a comprehensive, global database of land ice through repeat surveys.This data collection’s primary data product is the GLIMS Glacier Database. The glacier database includes measurements of glacier geometry, glacier area, snowlines, supraglacial lakes and rock ...
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Ice Sheets Today | National Snow and Ice Data Center
Together, the Antarctic and Greenland Ice Sheets contain more than 99 percent of freshwater ice on Earth. If they both completely melted, they would raise sea level by an estimated 67.4 meters (223 feet). Long-term satellite data indicate that through most of the twentieth century, the ice sheets made very little contribution to sea level, and ...
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