Sentences with phrase «sea ice retreat»

Second, the rate of sea ice retreat in recent years is also unprecedented in the historical record.

However, changing climates result in more polar bears visiting coastal communities earlier in the fall each year as sea ice retreats.

Last year's sea ice retreat allowed scientists to map big potential sea floor claims.

In the op - ed, he claims that global warming has not caused global sea ice retreat.

Arctic sea ice retreats in the springtime as daylight reappears and temperatures warm.

This is perhaps the least newsworthy item for readers here, given how much The Times has covered the mix of issues arising as summer sea ice retreats in the Arctic and pressures grow to exploit new shipping routes and northern resources.

Recent estimates indicate that the Antarctic sea ice cover is expanding at a statistically significant rate with a magnitude one - third as large as the rapid rate of sea ice retreat in the Arctic.

Variability, trends, and predictability of seasonal sea ice retreat and advance in the Chukchi Sea.

This increased availability of iron occurs in connection to increased atmospheric dust transport during glacials, or (at a seasonal scale) during sea ice retreat during spring / summer.

The publicly available report also divides the Arctic Ocean into 12 regions, and calculates the changes in the dates of spring sea ice retreat and fall freeze - up from NASA satellite images taken between 1979 and 2013.

Updated, Nov. 25, 10:41 a.m. Ruth Teichroeb, the communications officer for Oceans North: Protecting Life in the Arctic, an initiative of the Pew Charitable Trusts, sent a note this evening about new steps related to an issue I've covered here before — the rare and welcome proactive work by Arctic nations to ban fishing in the central Arctic Ocean ahead of the «big melt» as summer sea ice retreats more in summers in a human - heated climate.

«The study pointed to the possibility of forecasting the largest sea ice retreat in a given year based on the magnitude of ice divergence in May and June.

In parts of the polar bears» range, the lengthening period of sea ice retreat from shelf waters — caused by increasing temperatures — can reduce their opportunities to hunt seals, leading to declines in bear nutritional condition.

[UPDATE, 5/20: Natalie Angier has written a nice column on the relatively unheralded walrus, which — like the far more charismatic polar bear — is having a hard time as Arctic sea ice retreats earlier and farther each spring and summer and forms later in the boreal fall.

Historically, there had not been enough open water for polar bears in this region to swim the long distances we observed in these recent summers of extreme sea ice retreat.»

(1) the Arctic is already showing serious disruption, including sea ice retreat, amplified warming, ice sheet loss, permafrost and clathrate thawing, and initiation of natural carbon feedback cycle.

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.

The Davis Strait polar bear subpopulation is said to be «vulnerable» to the supposed effects of global warming because, like Hudson Bay, Davis Strait sea ice retreats every summer, leaving polar bears on land for several months.

Climate models predict significant future Arctic sea ice decline as the planet warms, but the models disagree over the rate at which this will occur, and the rate of sea ice retreat observed during the satellite era is actually faster than the model predictions, suggesting that the models do not adequately simulate the physical processes that regulate sea ice thickness and extent.

There are the famous data sets: the Vostok ice core drilled in the 1970s that looks back about 400,000 years, the Keeling curve started in 1958, data from satellites that watch sea ice retreat starting around 1979.

Today, the Barents Sea ecoregion is suffering the strongest sea ice retreat ever measured; and these changes are suspected to modify food access and thus diet of several species.

Stammerjohn, S., et a., (2008) Trends in Antarctic annual sea ice retreat and advance and their relation to El Niño southern oscillation and southern annular mode variability.

This continues the pattern seen in June, with conditions unfavorable to pronounced sea ice retreat: cloudy and cool, with winds that tend to disperse the ice and increase its extent, rather than compact it.

In an extreme case with Arctic sea ice retreating even in spring, this process could become far less important.

A recent study by NSIDC scientists Mark Serreze, Julienne Stroeve, and Alexander Crawford, along with University of Washington scientist Rebecca Woodgate, demonstrates strong links between seasonal sea ice retreat and advance in the Chukchi Sea and the inflow of ocean heat into the region through the Bering Strait.

From whale bones, 42 Arctic driftwood, 26 and patterns of Arctic shoreline erosion, 25 we also know that during the Holocene, Arctic summer sea ice retreated 1000 kilometers further north than seen today.

There's the short - term problem, where we want to slow the rate of changes we are already seeing such as Arctic sea ice retreat, more frequent heat waves, and increasing stress on ecosystems.

The established icons of Arctic climate change are the polar bear and, to a lesser extent, those indigenous communities that are trying to maintain traditional ways in the face of slushy floes and the relentless erosion of coasts exposed to waves as sea ice retreats.

Sea ice retreats during the summer, reaching its minimum extent in September.

Seasonal sea ice retreat in 2012 began with a major reduction event in early June (Figure 2) associated with persistent high pressure over the Beaufort Sea and low pressure over the Kara Sea, now referred to as the Arctic Dipole (AD) weather pattern (see discussion of the AD in previous Outlooks).

«Unraveling a major cause of sea ice retreat in the Arctic Ocean.»

CHICAGO, ILLINOIS — It's not a secret that the Arctic Ocean is turning from white to blue as sea ice retreats.

Furthermore, unraveling the causes of sea ice retreat should help us understand the mechanisms behind climate change on a global level, which is interrelated to the ice reduction in the Arctic ocean.»

«This study was the first to quantitatively elucidate that ice - ocean albedo feedback is a primary driver of seasonal and yearly variations in Arctic sea ice retreat,» says Kay I. Ohshima.

Eisenman, an assistant professor of climate dynamics, said that the results of the study show that the heating resulting from albedo changes caused by Arctic sea ice retreat is «quite large.»

«Polar bears are swimming more as sea ice retreats, study indicates.»

Confirmation of global warming comes from warming of the oceans, rising sea levels, glaciers melting, sea ice retreating in the Arctic and diminished snow cover in the Northern Hemisphere.

«the recent warming is seen in the oceans, the atmosphere, in Arctic sea ice retreat, in glacier recession, earlier springs, reduced snow cover etc...».

The second error is obvious from the fact that the recent warming is seen in the oceans, the atmosphere, in Arctic sea ice retreat, in glacier recession, earlier springs, reduced snow cover etc., so even if all met stations were contaminated (which they aren't), global warming would still be «unequivocal».