Sentences with phrase «as ice discharge»

Freshwater flux from Greenland is composed of melt runoff from ice and tundra runoff as well as ice discharge («calving» of icebergs).

Not exact matches

New data indicate that substantial areas throughout westernmost Canada were ice free prior to 12.5 ka and some as early as 14.0 ka, with implications for climate dynamics and the timing of meltwater discharge to the Pacific and Arctic oceans.

As the Arctic sea ice continues to decay, such large discharges may become unlikely.

Losses of glacial ice and permanent snowpack as well as thawing permafrost are widespread and complex; they affect key aspects of alpine lakes and streams that include temperature, water discharge, and nutrient supply.

More problematic, if discharge proves to significantly exceed recharge, then estimates of contributions from other sources such as melting ice and thermal expansion may be too high.

In the future, high - end estimates of ice discharge and regional effects, such as local thermal expansion and coastal subsidence, place the upper limits of relative sea - level rise for the Netherlands at 0.65 to 1.3 m by 2100, excluding gravitational effects.

These approaches, however, haven't taken into account some physical processes that can quickly increase ice sheet discharge, such as the collapse of terminal ice cliffs and the breakup of floating ice shelves caused by a process known as hydrofracturing.

Loss of glacial volume in Alaska and neighboring British Columbia, Canada, currently contributes 20 % to 30 % as much surplus freshwater to the oceans as does the Greenland Ice Sheet — about 40 to 70 gigatons per year, 66,78,63,57,64,58 comparable to 10 % of the annual discharge of the Mississippi River.79 Glaciers continue to respond to climate warming for years to decades after warming ceases, so ice loss is expected to continue, even if air temperatures were to remain at current leveIce Sheet — about 40 to 70 gigatons per year, 66,78,63,57,64,58 comparable to 10 % of the annual discharge of the Mississippi River.79 Glaciers continue to respond to climate warming for years to decades after warming ceases, so ice loss is expected to continue, even if air temperatures were to remain at current leveice loss is expected to continue, even if air temperatures were to remain at current levels.

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 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 chaice discharge by 49 Gt / yr (2.5 % of input), as derived from ICESat laser measurements of elevation change

It is driven by poorly understood processes occurring at the ice - ocean interface, such as subglacial discharge into the ocean, turbulent plume dynamics, submarine melting, and iceberg calving.

... Most projections for the Antarctic Ice Sheet since IPCC AR5 limit the sea - level contribution as a result of dynamic discharge and the potential onset of the marine ice sheet instability to 0.3 m by the end of this centuIce Sheet since IPCC AR5 limit the sea - level contribution as a result of dynamic discharge and the potential onset of the marine ice sheet instability to 0.3 m by the end of this centuice sheet instability to 0.3 m by the end of this century.

Annual ice discharge from this region as a whole has increased 77 percent since 1973.

Amplifying feedbacks include increased absorption of sunlight as melting exposes darker surfaces and speedup of iceberg discharge as the warming ocean melts ice shelves that otherwise inhibit ice flow.

For example, low discharges were reported during the period known as the Little Ice Age (LIA).

Credits: NASA's... From Zwally as well, «We're essentially in agreement with other studies that show an increase in ice discharge in the Antarctic Peninsula and the Thwaites and Pine Island region of West Antarctica,» said Jay Zwally, a glaciologist with NASA Goddard Space Flight Center in Greenbelt, Maryland, and lead author of the study, which was published on Oct. 30 in the Journal of Glaciology.

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.

The water most likely came from melting of the ice sheet — rather than an ice - dammed lake bursting or glacial lake drainage — as the high discharge was maintained for so long, Forster said.

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