2025年1月30日 · NASA's glaciers and ice sheet data help reveal ways these frozen giants influence our weather, climate, communities, and oceans. There are approximately 700,000 square kilometers of glaciers and ice sheets in the world …

Ice sheet surface velocity is a fundamental observable of their dynamics, that has only been available recently from space and that is central to assessments of past, current and future contributions to sea level (US Climate Change Research Program [USCCRP], 2012).

2025年1月23日 · NASA's glacier and ice sheet motion data provide broad perspectives and essential details for tracking how these massive forms of land ice move. Glaciers are known as rivers of ice because of the way they slowly flow down mountains or across a landscape.

Records of ice flow will be accompanied by a growing 30-year time series of ice sheet and ice shelf elevation changes from 1993 through to 2023, synthesizing data from two NASA and six ESA satellite altimeters. These will be validated against NASA IceBridge laser altimetry through the end of that mission.

2020年7月9日 · Greenland’s ice sheet contains enough water to raise global sea levels by as much as 7.4 meters (25 feet), according to the OMG mission website. The objective of NASA’s five-year (2015-2020) OMG mission is to better understand the ocean’s role in melting Greenland’s glaciers.

The Antarctic ice sheet is by far the largest reservoir of fresh water ice on Earth and the largest potential contributor to sea level rise in centuries to come. Recent observations from satellites have shown that the ice sheet is not immune to changes and is …

The Global Ice-Sheet Mapping Observatory (GISMO) spaceborne radar system was a part of the NASA Instrument Incubator Project (IIP). The IIP program was designed to provide a testing opportunity for emerging technology in order to create …

Ice sheet mass balance is a critical—the critical—parameter for forecasting sea level in the coming decades. While ocean thermal expansion and mountain glacier ice loss currently account for most of the rate of sea level change, sea level changes will be increasingly dominated by changes in the ice sheets, and these changes will increase ...

2020年12月28日 · A closer estimate of the potential for sea level rise from ice sheet melting would give low-lying communities around the world more time to figure out how to adapt. Icing up Water on Earth resides in liquid form in the ocean, lakes, rivers, and underground, in moisture form in the air and soil, and in solid form as ice and snow.

2025年1月17日 · The solid rock under a glacier or ice sheet. Boulder. Also called, “erratic boulder.” Large boulders are sometimes left behind when a glacier recedes or retreats. Calving. Glaciers calve icebergs, which are chunks of ice that break off glaciers and fall into water. Cirque. A bowl or basin carved out of a mountain by a young glacier. Crevasse