Ice Sheets Today - National Snow and Ice Data Center
2024年11月19日 · Water carves into the Greenland Ice Sheet, exposing layers of dust. At the edge of the ice sheet, surface melt releases old layers of dirt, dust, pollen, or ash that have traveled thousands of years into the ice.
Glacier Quick Facts - National Snow and Ice Data Center
What are ice caps and icefields? An ice cap is a type of glacier, covering less than 50,000 square kilometers (20,000 square miles). Like ice sheets, ice caps tend to spread out in dome-like shapes as opposed to flowing down slopes.
Arctic Weather and Climate | National Snow and Ice Data Center
This bustling harbor in Ilulissat, Greenland, is filled with various kinds of water vessels. Summers in Greenland turn Greenland green. — Credit: Twila Moon, NSIDC Weather is the day-to-day state of the atmosphere, and its short-term variation in minutes to weeks.
Ice Sheet Quick Facts - National Snow and Ice Data Center
A meandering melt stream feeds the supraglacial lake in Greenland, eroding a channel on the ice sheet. — Credit: Ian Joughin/Imaggeo Together, the Antarctic and Greenland Ice Sheets contain more than 99 percent of the fresh water ice on Earth.
Sea Ice Today - National Snow and Ice Data Center
2024年12月4日 · 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.
Science of Snow - National Snow and Ice Data Center
The sun emerges after heavy snow hit Mount Vernon, Iowa. — Credit: Rich Herrmann/Flickr Snow on the ground. The character of the snow surface after a snowfall depends on the original form of the crystals and on the weather conditions present when the snow fell.
Arctic Weather and Climate - National Snow and Ice Data Center
Factors affecting Arctic weather and climate. Just like other areas on Earth, weather and climate in the Arctic depend on a lot of variables, including latitude that affects how much energy is received from the sun, and the distribution of land and water.
Data | National Snow and Ice Data Center
Open access data to inform researchers, policymakers, and othersNSIDC’s data management programs focus on preserving and providing access to cryospheric data and related geophysical data.
What do ice cores reveal about the past? | National Snow and Ice …
2023年3月24日 · For all their transparent beauty, snowflakes often crystallize around atmospheric particles such as dust or pollen. — Credit: K.G. Libbrecht, National Science Foundation You might not think of snow as a data archive, but it preserves a wealth of information about the past, ranging from landscapes to weather.
Science of Glaciers - National Snow and Ice Data Center
Visitors to the terminus of the Perito Moreno Glacier in Patagonia, South America, listen and observe its dynamic motion. Climate change has yet to affect the Perito Moreno Glacier, mainly because of its particular topographic situation.