Sentences with phrase «current sea ice retreat»

Suffice it to say that there are indications that at least a major part of the current sea ice retreat is due to naturally occurring shifts in weather patterns, rather than simply to Arctic swarming caused by human GHG emissions, as some people apparently believe.

Not exact matches

Sensors that have plumbed the depths of Arctic seas since 2002 have found warm currents creeping up from the Atlantic Ocean and helping drive the dramatic retreat of sea ice there over the last decade.

The melting and retreating of Arctic sea ice in the summer months also has allowed PWW to move further north than in the past when currents pushed it westward toward the Canadian archipelago.

Current predictions [5], [6] suggest that trends in sea ice extent will alter in the second half of this century and that the annual average sea ice extent will diminish by 33 %; most of this retreat is expected to occur in winter and spring [5], [6], with attendant risks for emperor penguins.

Gavin disputes that the main driver of the sea ice retreat is the albedo flip, but we are seeing not only polar amplification of global warming but positive feedback, which would not be explained simply by radiative forces and ocean currents.

In fact, although climate models predict that Arctic sea ice will decline in response to greenhouse gas increases, the current pace of retreat at the end of the melt season is exceeding the models» forecasts by around a factor of 3 (Stroeve 2007).

In addition to a groundwater base flow driving the current steady rise in sea level, meltwater from retreating Little Ice Age glaciers undoubtedly contributed as well.

Prediction is based on evaluation of ice age that shows current ice extent has retreated back to the multiyear ice edge in the eastern Arctic and in the Beaufort and Chukchi seas.

Comparing the latest ice age data from Maslanik and Fowler (see Maslanik contribution) for 21 June 2010 (Figure 6) to current (20 July) ice extent data shows that the ice edge has retreated back to the boundary between first - year and multi-year ice pack in the eastern Arctic and in the Beaufort and Chukchi seas.

«Antarctic sea ice shows no sign of summer retreat, and the current winter's peak extent is well above average.

Until recently, the contribution of ice sheets to sea - level rise remained unknown and is still debated, but the current acceleration of sea - level rise is attributed to heating of the oceans and melting of land glaciers which is supported by measurements of ocean temperatures and the behavior of mountain glaciers, the vast majority of which are retreating or exhibit signs of instability.

As far as current global observations are concerned, Hansen cites both the decline of Arctic sea ice and the worldwide retreat of mountain glaciers as causes for major concern.

The unintended human consequences, starting with that agriculturally - triggered warming, extending to acquired vulnerability to extreme weather and solar storms, the current global warming, Arctic sea - ice retreat (moment # 97), and coral reef die - offs (moment # 99).