Sentences with phrase «over the ice sheet»

This effect led to initial concern about rapid acceleration resulting directly from warmer air over the ice sheet.

Antarctic ice is being melted from below by slightly warmer salt water, so the best idea they have is to start pumping that slightly warmer salt water all over the ice sheet in the hope that it will.....

«There are a lot of theories about how the precipitation processes over the ice sheet will change in the future,» says Pettersen.

However, ice - penetrating radar scanners, flown over the ice sheet by aircraft, can reveal the shape of the ground.

But recent research shows that supraglacial rivers flowing over the ice sheet could swell oceans even more than massive icebergs or the drainage from Greenland's glacial lakes.

The problem with those measurements, Morlighem said, is that they were scattered, and the data were limited to areas where there were flights over the ice sheet.

Improving digital elevation models over ice sheets using AVHRR - based photoclinometry.

Previous research by Box using ice cores — long cylinders drilled out of the ice sheet that let scientists sample hundreds of years of ice layers — showed that in the past, snowfall has increased over the ice sheet as temperatures have risen.

Researchers attributed the surprising early melt this year to weather conditions, and more specifically, a warm midlatitude air mass getting stuck over the ice sheet.

Throughout each year, layers of snow fall over the ice sheets in Greenland and Antarctica.

Scientists have adopted three general approaches to ice sheet mass balance measurement: comparing outflow and melt to snowfall accumulation (the mass budget method), observing changes in glacier elevation (volume change or geodetic method), and detecting changes in the Earth's gravity field over the ice sheet (gravimetric method).

As a remote sensing scientist, I often use Worldview to put things into context (e.g. for studying changes over ice sheets and glaciers).

It's a finding that should be reflected in current climate models to help scientists make more accurate predictions about future Greenland melt — and could become even more important in the coming years if cloud cover over the ice sheet were to increase as a result of climate change.

Climate change research topics identified for immediate action • Thorough understanding of the physics and dynamics of the Greenland and Antarctic ice sheets, with a view to predicting sea level rise within 20 % for a specified change in climate over the ice sheets.

This latest heat dome started to move over Greenland on July 8, and then parked itself over the ice sheet about three days later.