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, …
Learn - National Snow and Ice Data Center
WEBWitness 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.
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.
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 ...
Sea Ice Today - National Snow and Ice Data Center
WEBSep 24, 2024 · On September 11, Arctic sea ice likely reached its annual minimum extent of 4.28 million square kilometers (1.65 million square miles). The 2024 minimum is the seventh lowest in the nearly 46-year satellite record. The last 18 years, from 2007 to 2024, are the lowest 18 sea ice extents in the ...
Arctic Weather and Climate | National Snow and Ice Data Center
WEBNear the ocean, a maritime climate prevails. In coastal Alaska, along with Iceland and Scandinavia, the winters are stormy and wet, with snow and rainfall reaching 60 centimeters (24 inches) to 125 centimeters (49 inches) each year. Summers in the coastal regions tend to be cool and cloudy; average temperatures hover around 10 °C (50 °F).
Science of Snow - National Snow and Ice Data Center
WEBScience. For snow to fall, moisture must be present in the atmosphere. Snowstorms also rely heavily on temperature, but not necessarily the temperature we feel on the ground. Snow forms when the atmospheric temperature is at or below freezing (0°C or 32°F). If the ground temperature is at or below freezing, the snow will reach the ground.
Charctic Interactive Sea Ice Graph - National Snow and Ice Data …
WEBGraph. What it shows: For both the Arctic and Antarctic, the graph compares sea ice extent (area of ocean with at least 15 percent sea ice concentration) between all years selected. Charctic shows sea ice growth and retreat throughout the calendar year. The default display shows the current year, the record-low year, and climatology.
Quick Facts About Snow - National Snow and Ice Data Center
WEBSnow acts like a scrubbing brush as it falls through the atmosphere. So, the longer the snow falls, the cleaner the air, and also the snow. That being said, never eat plowed snow, which contains snow, dirt, and chemicals like magnesium chloride. Also, it takes a lot of energy for the body to melt the snow into water, actually dehydrating a person.