Sentences with phrase «of the ice sheet decreases»

When large parts of the ice sheet melted at the end of the ice age, the weight of the ice sheet decreased, and the crust began to rebound.

A loss of mass from the ice sheet causes nearby ocean levels to fall as the mass and gravity of the ice sheet decreases.

Not exact matches

There are more, however, including the amount of sunlight an ice sheet is able to reflect; the larger an ice sheet, the more sunlight is reflected, but the smaller an ice sheet, the more ocean there is surrounding the ice sheet to absorb the sunlight which in turn heats up the surrounding waters increasing the melt which decreases the size of the ice sheet which in turn... and so goes the cycle.

Over hundreds or thousands of years, vast ice sheets can melt away, further decreasing the planet's reflectivity.

would a plausible physical explanation be that the deep ocean and ice sheets are still responding somewhat to the post-glacial temperature increase (eg, T - T0, 0 > 0), but that the faster components of SLR like the surface oceans and glaciers were actually responding to the decrease in temperature since the early Holocene?

That would also imply that (T - T0 (t)-RRB- must be negative during the pre-900 period when SLR = 0... would a plausible physical explanation be that the deep ocean and ice sheets are still responding somewhat to the post-glacial temperature increase (eg, T - T0, 0 > 0), but that the faster components of SLR like the surface oceans and glaciers were actually responding to the decrease in temperature since the early Holocene?

[2] «If Earth's climate continues to warm, then the volume of present - day ice sheets will decrease.

See e.g. slide 31 of http://www.soest.hawaii.edu/GG/FACULTY/POPP/Lecture12.ppt E.g. a decreased insolation at high northern latitudes would cause ice sheets to grow.

Ice sheet mass decreased at 152 ± 80 cubic kilometers of ice per year, equal to 0.4 ± 0.2 millimeters of sea level rise per yeIce sheet mass decreased at 152 ± 80 cubic kilometers of ice per year, equal to 0.4 ± 0.2 millimeters of sea level rise per yeice per year, equal to 0.4 ± 0.2 millimeters of sea level rise per year.

Higher temperatures in polar regions and a decrease in the salinity of surface water due to melting ice sheets could interrupt such circulation, the report says.

Ocean salinity in the Arctic is of particular interest because it changes significantly with seasonal ice cover and is expected to decrease as the Greenland ice sheet melts and releases massive amounts of freshwater.

By the mid-Holocene period, 6000 - 5000 years ago, glacial melting had essentially ceased, while ongoing adjustments of Earth's lithosphere due to removal of the ice sheets gradually decreased over time.

The Antarctic ice sheet reached the coastline for the first time at ca. 33.6 Ma and became a driver of Antarctic circulation, which in turn affected global climate, causing increased latitudinal thermal gradients and a «spinning up» of the oceans that resulted in: (1) increased thermohaline circulation and erosional pulses of Northern Component Water and Antarctic Bottom Water; (2) increased deep - basin ventilation, which caused a decrease in oceanic residence time, a decrease in deep - ocean acidity, and a deepening of the calcite compensation depth (CCD); and (3) increased diatom diversity due to intensified upwelling.

New paper finds East Antarctic ice sheet will have negative contribution to sea levels over next 200 years — Published The Cryosphere — Paper «studies one of the largest ice shelves in East Antarctica and predicts increased accumulation of ice on the surface of the ice shelf will have a net contribution of decreasing sea levels over the 21st and 22nd centuries.

A color scale was applied in the range of +250 to -250 centimeters of equivalent water height, where blue values indicate an increase in the ice sheet mass while red shades indicate a decrease.

However, this situation ended when the freshwater flux from ice - sheet melting decreased and a newly enhanced thermohaline circulation in the Atlantic was likely to have extended the interglacial warmth during the latter part of the Last Interglacial.

Once an ice sheet starts to melt, the surface of the ice gradually decreases in altitude and becomes warmer, leading to yet more melting in a positive feedback effect.

Furthermore, «at the summit of the Greenland ice sheet the summer average temperature has decreased at the rate of 2.2 °C per decade since the beginning of the measurements in 1987.

For example, the lower atmosphere and the upper layers of the ocean have also warmed, snow and ice cover are decreasing in the Northern Hemisphere, the Greenland ice sheet is shrinking, and sea level is rising (see Figure 1b).

First, as was widely reported back in 2006 — and thus well known to Lomborg while writing Cool It — the first - ever gravity survey of the entire Antarctic ice sheet by NASA and German scientists using a satellite launched in 2002 found «Antarctica's ice sheet decreased by 152 (plus or minus 80) cubic kilometers of ice annually between April 2002 and August 2005.»

With an increase in crevasses comes a decrease in moulins, tunnels in the ice that transport surface water to the base of the sheet.

Specifically in this case, the effects of increase ice sheets and decreased GHG changes do not combine in a purely additive manner.

For example, coastal stations in Greenland are cooling and average summer air temperatures at the summit of the Greenland Ice Sheet have decreased by 4 degrees Fahrenheit per decade since measurements began in 1987.

Here's an overview from NASA: By the mid-Holocene period, 6000 - 5000 years ago, glacial melting had essentially ceased, while ongoing adjustments of Earth's lithosphere due to removal of the ice sheets gradually decreased over time.

Lots of Antarctic sea ice would argue that the loss of ice sheet mass is decreasing — however on the subject of sea ice and mass loss there is a lot of dancing.

Actually, what the isotopes tell us is that there was an increase in the amount of biological carbon through the deglaciation, not a decrease, about 500 Gton C as organic matter, explainable as growth of forests where the ice sheets used to be.

Record droughts in many areas of the world, the loss of arctic sea ice — what you see is an increasing trend that is superimposed on annual variablity (no bets on what happens next year, but the five - to - ten year average in global temperatures, sea surface temperatures, ocean heat content — those will increase — and ice sheet volumes, tropical glacier volumes, sea ice extent will decrease.

In an update to findings published in the journal Geophysical Research Letters, a team led by Dr. Isabella Velicogna of the University of Colorado, Boulder, found that Greenland's ice sheet decreased by 162 (plus or minus 22) cubic kilometers a year between 2002 and 2005.

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.

The observed effects of cryosphere reduction include modification of river regimes due to enhanced glacial melt, snowmelt advance and enhanced winter base flow; formation of thermokarst terrain and disappearance of surface lakes in thawing permafrost; decrease in potential travel days of vehicles over frozen roads in the Arctic; enhanced potential for glacier hazards and slope instability due to mechanical weakening driven by ice and permafrost melting; regional ocean freshening; sea - level rise due to glacier and ice sheet shrinkage; biotic colonisation and faunal changes in deglaciated terrain; changes in freshwater and marine ecosystems affected by lake - ice and sea - ice reduction; changes in livelihoods; reduced tourism activities related to skiing, ice climbing and scenic activities in cryospheric areas affected by degradation; and increased ease of ship transportation in the Arctic.

But if West Antarctica were to lose a substantial part of its ice, then the gravitational pull would relax, and sea level would actually decrease near the ice sheet even as it spreads and increases across the global ocean.

Further, there has been an almost worldwide reduction in glacial mass and extent in the 20th century; melting of the Greenland Ice Sheet has recently become apparent; snow cover has decreased in many Northern Hemisphere regions; sea ice thickness and extent have decreased in the Arctic in all seasons, most dramatically in spring and summer; the oceans are warming; and sea level is rising due to thermal expansion of the oceans and melting of land Ice Sheet has recently become apparent; snow cover has decreased in many Northern Hemisphere regions; sea ice thickness and extent have decreased in the Arctic in all seasons, most dramatically in spring and summer; the oceans are warming; and sea level is rising due to thermal expansion of the oceans and melting of land ice thickness and extent have decreased in the Arctic in all seasons, most dramatically in spring and summer; the oceans are warming; and sea level is rising due to thermal expansion of the oceans and melting of land iceice