Sentences with phrase «polar regions since»

He has specialised in photographing polar regions since 1995, and sees his role as «bridging a gap between scientific research and the public».

This IPY is the first such multinational comprehensive look at the polar regions since 1958, when the International Geophysical Year (IGY) wrapped up.

Not exact matches

Since the 1970s the northern polar region has warmed faster than global averages by a factor or two or more, in a process of «Arctic amplification» which is linked to a drastic reduction in sea ice.

Temperatures in the northern polar region have already risen by 1.6 degrees Celsius (2.88 degrees Fahrenheit) since the dawn of the Industrial Revolution.

Since the Artics» sea - ice cover is shrinking due to global warming, the polar region takes up more heat.

Since deeper waters will be warmer, there is a possible link to the global ocean circulating currents that results in warmer water in polar regions.

Assume equal distribution of light (this favors ice since polar regions actually receive less light per unit area).

As far as this historic period is concerned, the reconstruction of past temperatures based on deep boreholes in deep permafrost is one of the best past temperature proxies we have (for the global regions with permafrost — polar regions and mountainous regions)-- as a signal of average temperatures it's even more accurate than historic direct measurements of the air temperature, since the earth's upper crust acts as a near perfect conservator of past temperatures — given that no water circulation takes place, which is precisely the case in permafrost where by definition the water is frozen.

This sentence is not very clear, although I will agree where it is warmer, warming happens more often, I am not sure that you can definatively state «polar regions» since readings from antarctica and the arctic seem to be heading in opposite directions.

Over all, open water has spread in the Arctic this summer nearly as much as it did last summer, when polar experts said the ice cap shrank far more than had been measured since satellites started scanning the region 30 years ago — and probably more than it had shrunk in a century or more.

From the Carsey Institute: Americans» Knowledge of Polar Regions Up, But Not Their Concern Environmental Issues in Polar Regions Are Polarizing DURHAM, N.H. — Americans» knowledge of facts about the polar regions of the globe has increased since 2006, but this increase in knowledge has not translated into more concern about changing polar environments, accorRegions Up, But Not Their Concern Environmental Issues in Polar Regions Are Polarizing DURHAM, N.H. — Americans» knowledge of facts about the polar regions of the globe has increased since 2006, but this increase in knowledge has not translated into more concern about changing polar environments, accorRegions Are Polarizing DURHAM, N.H. — Americans» knowledge of facts about the polar regions of the globe has increased since 2006, but this increase in knowledge has not translated into more concern about changing polar environments, accorregions of the globe has increased since 2006, but this increase in knowledge has not translated into more concern about changing polar environments, according...

Do not forget, that the «greenhouse» theory expects the strongest warming in polar regions, since dry air holds only a little of water vapor and increase of CO2 should intensify the «greenhouse» effect very vividly.

Changing to the HadCrut4 - which does not understate the effects of the polar regions as much, the warming since 1997 becomes quite self evident.

During the last 60 million years, since the event that killed the dinasoars, the orbit and tilt of the earth has been similar to now and the polar regions always were cold enough that there was ice.

Since the major dust sources are located in northern subtropical latitudes, the direct effect is mainly concentrated in these regions (11), although polar regions are sensitive to amplified high - latitude variability in dust concentrations (12).

The south polar region temp has been declining slightly since Dec 1978.

Furthermore since the satellite records do not include much of the polar regions they can not be considered to have global coverage either.

Temperatures in the northern polar region have already risen by 1.6 degrees Celsius (2.88 degrees Fahrenheit) since the dawn of the Industrial Revolution.

This can be seen in the output of GCMs and one can also see why this is roughly the case since the time scale of decay should be approximately the amount of time it takes to melt a square meter of glacier ice with the forcing change that would result from a loss of a square meter of ice in polar regions.

• The greatest change in sea ice habitat since 1979 was experienced by Barents Sea polar bears and the least by those in Southern Hudson Bay, the most southerly region inhabited by bears.

In contrast to the polar regions, the network of lower latitude small glaciers and ice caps, although making up only about four percent of the total land ice area or about 760,000 square kilometers, may have provided as much as 60 percent of the total glacier contribution to sea level change since 1990s (Meier et al. 2007).