Greenland Ice Sheet - NOAA Arctic
We summarize the mass changes for the 2024 mass balance year, 1 September 2023 through 31 August 2024, and discuss influential factors. The Greenland Ice Sheet gains mass chiefly from snow accumulation and loses mass through meltwater runoff and discharge of solid ice into the ocean (i.e., calving icebergs).
Greenland ice sheet - Wikipedia
The Greenland ice sheet is an ice sheet which forms the second largest body of ice in the world. It is an average of 1.67 km (1.0 mi) thick, and over 3 km (1.9 mi) thick at its maximum. [ 2 ] It is almost 2,900 kilometres (1,800 mi) long in a north–south direction, with a maximum width of 1,100 kilometres (680 mi) at a latitude of 77°N ...
Watch Greenland lose 563 cubic miles of ice in under 30 seconds …
2 天之前 · Their joint results revealed that the ice sheet thinned by an average of 3.9 feet (1.2 meters) over 13 years. But that average number obscures major differences across the sheet. The ice sheet's ...
Greenland Ice Sheet - NOAA Arctic
Winter snow accumulation was above average this year, but the Greenland Ice Sheet still lost 156 ± 22 Gt of mass from 1 September 2022 to 31 August 2023 because discharge and melting exceeded accumulation. Summer high-pressure systems brought warm temperatures, widespread melting, and exceptional rainfall volumes.
Melt Data | National Snow and Ice Data Center
In addition to generating daily maps and graphs of surface melt data, Ice Sheets Today provides the following data tools with a focus on the Greenland Ice Sheet. Explore the interactive graph below and look at Greenland surface melt extent over time. You can also easily compare melt patterns between years.
Greenland Ice Sheet - NOAA Arctic
The Greenland ice sheet covers ~1.63 million km 2 and contains ice equivalent to 7.4 m of eustatic sea level rise (Morlighem et al. 2017). Following decades of relative stability, the ice sheet has now lost mass almost every year since 1998, with tied years of record ice loss in 2012 and 2019 (Mankoff et al. 2021).
Greenland Ice Sheet | Definition, History, Volume, Map, & Facts ...
2024年12月25日 · Greenland Ice Sheet, the single ice sheet or glacier covering about 80 percent of the island of Greenland and the largest ice mass in the Northern Hemisphere, globally second in size to only the ice mass that covers Antarctica. It extends 1,380 miles (2,220 km) north-south, has a maximum width of 680 miles (1,094 km) near its northern margin ...
NASA SVS | Greenland Ice Mass Loss 2002-2023
2024年3月8日 · Research based on observations from the Gravity Recovery and Climate Experiment (GRACE) satellites (2002-2017) and GRACE Follow-On (since 2018 - ) indicates that between 2002 and 2023, Greenland shed approximately 270 gigatons of ice per year, causing global sea level to rise by 0.03 inches (0.8 millimeters) per year.
How and when did the Greenland Ice Sheet form?
2023年3月29日 · An ice sheet, a continental-sized glacier, forms over thousands of years, as layers of snowfall build up, become denser, and transform into glacial ice. As the ice thickens, the pressure of the ice triggers movement, forming a flowing sheet of ice tens to thousands of meters thick and tens to thousands of kilometers across.
Ice Sheets Today - National Snow and Ice Data Center
Ice Sheets Today offers the latest satellite data and scientific analyses on surface melting of the Greenland Ice Sheet in the Northern Hemisphere and Antarctic Ice Sheet in the Southern Hemisphere. Surface melt on each ice sheet results from a combination of daily weather conditions and the amount of solar energy absorbed by its snow and ice.