Glacier Quick Facts - National Snow and Ice Data Center
WEBA 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 ...
Homepage | National Snow and Ice Data Center
WEBNASA National Snow and Ice Data Center Distributed Active Archive Center (NSIDC DAAC) Open access cryosphere and related geophysical data from NASA Earth-observing satellite missions, airborne campaigns, and field observations. Explore NASA data at NSIDC.
Sea Ice Today - National Snow and Ice Data Center
WEBSep 3, 2024 · Sea ice data is updated daily, with a one-day lag. On occasion, there is data delay which is usually resolved within a few days. The orange line in extent and concentration images (left and middle) and the gray line in the time series (right) indicate 1981 to 2010 average extent for the day shown.
Snow Today - National Snow and Ice Data Center
WEBJun 5, 2024 · Snow Today is a NASA-funded research project that examines where snow is present, where it has snowed recently, and how much water is in the snow, while also comparing between snow today, snow yesterday, snow last year, and snow over the last few decades. You can find the following resources on our website: The Snow Today …
Science of Glaciers - National Snow and Ice Data Center
WEBGlaciers move by internal deformation of the ice, and by sliding over the rocks and sediments at the base. The weight of overlying snow, firn, and ice, and the pressure exerted by upstream and downstream ice deforms glacier ice, in a phenomenon known as creep. A glacier may slide on a thin layer of water at its base.
Why Glaciers Matter - National Snow and Ice Data Center
WEBWhy 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 ...
Sea Ice Index Daily and Monthly Image Viewer
WEBThe daily Sea Ice Index provides a quick look at Arctic-wide changes in sea ice. It provides consistently processed daily ice extent and concentration images and data since 1979. Daily extent images show ice extent at concentrations greater than 15% for a given day with an outline of the typical extent for that day based on a 30-year (1981-2010 ...
Ice Sheets Today | National Snow and Ice Data Center
WEBAug 14, 2024 · 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, …
Glaciers - National Snow and Ice Data Center
WEBA 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.
Data | National Snow and Ice Data Center
WEBNSIDC’s data management programs focus on preserving and providing access to cryospheric data and related geophysical data. Our three programs include the NASA NSIDC Distributed Active Archive Center (DAAC), the National Oceanic and Atmospheric Administration at NSIDC (NOAA@NSIDC), and the Exchange for Local Observations …