Sentences with phrase «ice sheet elevation changes»

Measurements of ice sheet elevation changes indicate the volume of ice lost, and hence the contribution to sea levels, he tells Carbon Brief.

Not exact matches

Although CryoSat - 2 is designed to measure changes in the ice sheet elevation, these can be translated into horizontal motion at the grounding line using knowledge of the glacier and sea floor geometry and the Archimedes principle of buoyancy — which relates the thickness of floating ice to the height of its surface.

The main feedbacks between climate and the ice sheet arise from changes in ice elevation, atmospheric and ocean circulation, and sea - ice distribution.

The GRACE data offers a complete picture of the entire ice sheet, allowing comparisons of mass changes in coastal regions (eg - elevations below 2000 metres) with the Greenland interior (above 2000 metres).

Although CryoSat - 2 is designed to measure changes in the ice sheet elevation, these can be translated into horizontal motion at the grounding line using knowledge of the glacier and sea floor geometry and the Archimedes principle of buoyancy — which relates the thickness of floating ice to the height of its surface.

This NASA visualization shows changes in the surface elevation of the southeast region of the ice sheet between 2003 and 2012.

The most - optimal values for changes in bedrock elevation (GIA) in response to ice sheet mass changes have to be used

The data used in the study included more than 455,000 independent estimates of changes in the land elevation of the vast ice sheets covering Antarctica, both in the western part of the continent, where ice is melting more rapidly, and in the east, where the ice is considered to be more stable, for the time being at least.

Although the study did not find a significant change in the elevation of the interior East Antarctic Ice Sheet, it shows for the first time that the thinning of the Totten glacier in that region extends to the point where the ice meets the land surface below, known as the grounding liIce Sheet, it shows for the first time that the thinning of the Totten glacier in that region extends to the point where the ice meets the land surface below, known as the grounding liice meets the land surface below, known as the grounding line.

Mass Gains of the Antarctic Ice Sheet Exceed Losses http://ntrs.nasa.gov/search.jsp?R=20120013495 SCAR ISMASS Workshop, July 14, 2012 «During 2003 to 2008, the mass gain of the Antarctic ice sheet from snow accumulation exceeded the mass loss from ice discharge by 49 Gt / yr (2.5 % of input), as derived from ICESat laser measurements of elevation chaIce Sheet Exceed Losses http://ntrs.nasa.gov/search.jsp?R=20120013495 SCAR ISMASS Workshop, July 14, 2012 «During 2003 to 2008, the mass gain of the Antarctic ice sheet from snow accumulation exceeded the mass loss from ice discharge by 49 Gt / yr (2.5 % of input), as derived from ICESat laser measurements of elevation cSheet Exceed Losses http://ntrs.nasa.gov/search.jsp?R=20120013495 SCAR ISMASS Workshop, July 14, 2012 «During 2003 to 2008, the mass gain of the Antarctic ice sheet from snow accumulation exceeded the mass loss from ice discharge by 49 Gt / yr (2.5 % of input), as derived from ICESat laser measurements of elevation chaice sheet from snow accumulation exceeded the mass loss from ice discharge by 49 Gt / yr (2.5 % of input), as derived from ICESat laser measurements of elevation csheet from snow accumulation exceeded the mass loss from ice discharge by 49 Gt / yr (2.5 % of input), as derived from ICESat laser measurements of elevation chaice discharge by 49 Gt / yr (2.5 % of input), as derived from ICESat laser measurements of elevation change

http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20120013495.pdf During 2003 to 2008, the mass gain of the Antarctic ice sheet from snow accumulation exceeded the mass loss from ice discharge by 49 Gt / yr (2.5 % of input), as derived from ICESat laser measurements of elevation change.

Based on ice - sheet model simulations consistent with elevation changes derived from a new Greenland ice core, the Greenland ice sheet very likely contributed between 1.4 m and 4.3 m sea level equivalent, implying with medium confidence a contribution from the Antarctic ice sheet to the global mean sea level during the last interglacial period.