Sentences with phrase «measure ice sheet masses»

The Washington Post asks Ian Joughin about a recent study, in the journal Science Advances, using a GPS network which measures ice sheet mass loss in Greenland and re-evaluates previous studies.

Not exact matches

But gravity - measuring satellites have shown that the continent's ice sheets have been losing mass since at least 2002.

When the Gravity Recovery and Climate Experiment (GRACE) satellites began measuring gravity signals around the world in 2002, scientists knew they would have to separate mass flow beneath the earth's crust from changes in the mass of the overlying ice sheet.

The second is the gravity method, which utilizes NASA's GRACE satellite pair to essentially weigh the ice sheets from space (it measures minute changes in their flight path due to the shifting gravity field of mass below).

GNET, short for «Greenland GPS Network,» uses Earth's natural elasticity to measure the mass of the ice sheet.

To infer the ice sheet's mass, the team measured ice flowing out of Antarctica's drainage basins over 85 percent of its coastline.

The satellites measure changes in gravity to determine mass variations of the entire Antarctic ice sheet.

Because ice sheets contain so much ice and have the potential to raise or lower global sea level so dramatically, measuring the mass balance of the ice sheets and tracking any mass balance changes and their causes is very important for forecasting sea level rise.

The only comprehensive study of the Antarctic Ice Sheet mass was a 10 + year study based on continuous 24/365 satellite measurements over the period 1993 to 2003, covering 80 % of the AIS with estimates from other methods for the remaining 20 %, which can not be measured by satellites (coastal areas and polar regions).

Although the satellites are considered the gold - standard for measuring and observing sea levels, hurricanes / typhoons, ozone holes, sea ice, atmospheric CO2 distribution, polar ice sheet masses and etc., the same 24/7 technology used to measure temperatures across the entire habitable world is now being ignored (i.e., denied) due to the above inconvenient evidence.

Over the past quarter - century, both the extent of melting and the length of the melt season on the Greenland ice sheet have been growing, as local temperatures have risen.6 Satellites measure the extent of melting by differentiating between areas of the ice mass that are fully frozen and those with surface meltwater.

Second, and less important but still rather spectacular, was the melting of virtually every square inch of the surface of this ice sheet over a short period of a few days during the hottest part of the summer, a phenomenon observed every few hundred years but nevertheless an ominous event considering that it happened just as the aforementioned record ice mass loss was being observed and measured.

As explained in the press release, the scientists began with the measure of sea level rise between 2005 and 2013, then deducted the amount of rise due to meltwater (e.g., melting ice sheets and loss of glacier mass worldwide) and then the amount of rise due to the expansion of water from the warming in the upper portion of the world's oceans (which scientists have good data on).

Those instruments measure gravity anomalies (and hence mass) and so are will be great at measuring the loss of ice from the ice sheets etc..

PRESS RELEASE Date Released: Tuesday, December 20, 2005 Source: Goddard Space Flight Center In the first direct, comprehensive mass survey of the entire Greenland ice sheet, scientists using data from the NASA / German Aerospace Center Gravity Recovery and Climate Experiment (Grace) have measured a significant decrease in the mass of the Greenland ice cap.

Hager, B. H. Weighing the ice sheets using space geodesy: A way to measure changes in ice sheet mass.