Snow Today - National Snow and Ice Data Center
Jun 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 project is a ...
Ice Sheets Today - National Snow and Ice Data Center
Aug 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, and ...
Science of Glaciers - National Snow and Ice Data Center
Glaciers 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.
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.
Sea Ice Today - National Snow and Ice Data Center
Nov 4, 2024 · Sea Ice Today began as a way to make sea ice science and analysis more relevant and accessible. In combination, NASA data and NSIDC expertise provide easy-to-use resources and tools to increase our understanding of climate change in the Arctic. Since 2007, this site has been a go-to source for blog-like insights, analysis, and data ...
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.
Science of Sea Ice - National Snow and Ice Data Center
Science. Sea ice is classified by stages of development that relate to thickness and age. A simple classification categorizes sea ice into two primary age groups: first-year or multiyear. First-year ice has existed only since the end of the previous summer melt season; multiyear ice has survived at least one summer melt season.
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 ...
Charctic Interactive Sea Ice Graph - National Snow and Ice Data …
Graph. 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
Snow 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.