Sentences with phrase «sea ice conditions at»

There was no discussion in the paper of ringed seal birth lairs, or sea ice conditions at the time of the study, but several mentions about what might happen in the future to sea ice and potential consequences for polar bears.

September 2009 sea ice extent was driven by preexisting sea ice conditions at the end of spring, as well as variable wind patterns over the course of summer.

In years such as 2008, initial sea ice conditions at the end of spring may have more of an influence on a September arctic sea ice extent Outlook than a forecast of summer wind fields, which dominated the ice situation in 2007.

Not exact matches

The case of this one polar bear and the failure of her offspring to survive in the new environmental conditions of the Arctic doesn't bode well for the future of the species, especially as Arctic sea ice continues to retreat at a record pace.

The team's next steps include looking more closely at specific ocean swell events and sea ice conditions during known ice shelf collapses and large iceberg calving events.

If we compare the ice thickness map of the previous winter with that of 2012, we can see that the current ice conditions are similar to those of the spring of 2012 — in some places, the ice is even thinner,» Dr Marcel Nicolaus, sea ice physicist at AWI, said today at a press conference during the EGU General Assembly in Vienna.

Scientists at the National Snow and Ice Data Center (NSIDC), University College London, University of New Hampshire and University of Washington analyzed 300 summer Arctic sea ice forecasts from 2008 to 2013 and found that forecasts are quite accurate when sea ice conditions are close to the downward trend that has been observed in Arctic sea ice for the last 30 yeaIce Data Center (NSIDC), University College London, University of New Hampshire and University of Washington analyzed 300 summer Arctic sea ice forecasts from 2008 to 2013 and found that forecasts are quite accurate when sea ice conditions are close to the downward trend that has been observed in Arctic sea ice for the last 30 yeaice forecasts from 2008 to 2013 and found that forecasts are quite accurate when sea ice conditions are close to the downward trend that has been observed in Arctic sea ice for the last 30 yeaice conditions are close to the downward trend that has been observed in Arctic sea ice for the last 30 yeaice for the last 30 years.

At its height between 1960 and 1980, Polyarka was staffed by more than fifty working scientists, engineers, and technicians focused on measurements of surface weather, snow depth, sea ice, and conditions in the upper atmosphere.

At 3.42 million square kilometres, it may still sound large, but this small extent of Arctic sea ice could have profound long - term consequences, and it follows a long trend of low sea ice conditions.

Toward colder extremes, as the area of sea ice grows, the planet approaches runaway snowball - Earth conditions, and at high temperatures it can approach a runaway greenhouse effect (8).

But before you read on, have a quick look at this short time - lapse video of sea ice and weather conditions in the central Arctic Ocean from early July through August 8, recorded by one of the two autonomous cameras set on the sea ice near the North Pole each spring by a research team from the University of Washington (the same folks I accompanied in 2003).

Now to contribute a single event to Global Warming, one has to look at the weather conditions, and if patterns are sighted which are tied to alteration of sea ice decline (our new atmosphere set up), we can connect the dots here too.

The study starts with observations of eroding ice sheets spreading, cooler freshwater at both ends of the planet and geological hints of tempestuous conditions toward the end of the Eemian, that last interval between ice ages when global temperatures and seas were higher than now.

You can experience 41 days of conditions around the North Pole in 44 seconds, thanks to the web cams left behind by an international research team (funded by the National Science Foundation) that annually ventures northward to install and retrieve instruments on and under the drifting sea ice at the top of the world.

People interested in this post might be interested in polarbearsinternational (dot) org which has collared bear tracking and compare their locations in the Beaufort sea to the current condition of the Arctic sea ice such as at the National Snow and Ice data center, nsidc (dot) org or the University of Bremen maice such as at the National Snow and Ice data center, nsidc (dot) org or the University of Bremen maIce data center, nsidc (dot) org or the University of Bremen maps.

Indeed it is hard to take a look at the latest results over at Cryosphere Today and not conclude that whatever the local conditions, overall Southern Hemisphere sea ice is in a very healthy state:

For several years, Rhett Herman, a physics professor at Radford University, has been leading students on an expedition each spring break to study the condition of the sea ice off the coast near Barrow, Alaska.

The animated sea - ice imagery above — from one of two autonomous cameras set on ice near the North Pole each spring — gives a close - focus view of the slushy conditions that develop on the shifting ice when the summer sun is at its peak.

Some other sea ice scientists (Jennifer Francis at Rutgers and Ignatius Rigor at the University of Washington) told me they are not ready to call it a season, noting that atmospheric pressure and some other conditions over the basin could lead to further shrinkage of ice extent in the next week or so.

For example, conditions at the poles affect how much heat is retained by the earth because of the reflective properties of ice and snow, the world's ocean circulation depends on sinking in polar regions, and melting of the Antarctic and Greenland ice sheets could have drastic effects on sea level.

While sea ice loss in 2012 had some atmospheric conditions supporting loss at the beginning of summer, the loss in 2012 probably was the result of thin sea ice initial conditions.

Yet, Polar Bears International («Save Our Sea Ice»)-- who were surely in and around Churchill in 2010 and 2006 watching polar bears — just posted an alarming statement about local conditions, implying that slow freeze - up of Hudson Bay this year is a reflection of the fact that «sea ice is at a record low across the Arctic.&raqSea Ice»)-- who were surely in and around Churchill in 2010 and 2006 watching polar bears — just posted an alarming statement about local conditions, implying that slow freeze - up of Hudson Bay this year is a reflection of the fact that «sea ice is at a record low across the Arctic.&raqIce»)-- who were surely in and around Churchill in 2010 and 2006 watching polar bears — just posted an alarming statement about local conditions, implying that slow freeze - up of Hudson Bay this year is a reflection of the fact that «sea ice is at a record low across the Arctic.&raqsea ice is at a record low across the Arctic.&raqice is at a record low across the Arctic.»

The region's sea ice extent — defined by NSIDC as the total area covered by at least 15 percent of ice — varies from year to year because of changeable weather conditions.

At times of low solar irradiance the amounts of sea ice in the Nordic Sea increase, this ice is then driven south due to the atmospheric circulation (also due to weak solar conditions) creating a more northerly air flow in this arsea ice in the Nordic Sea increase, this ice is then driven south due to the atmospheric circulation (also due to weak solar conditions) creating a more northerly air flow in this arSea increase, this ice is then driven south due to the atmospheric circulation (also due to weak solar conditions) creating a more northerly air flow in this area.

A map of sea ice extent at the climax of the Last Glacial Maximum (both perennial and seasonal ice), prepared with the help of a colleague, makes it possible to discuss what genetic and fossil evidence can tell us about the probable effects of glacial conditions on polar bears and ringed seals.

UPDATE: Sea ice condition of Hudson Bay at 1 November 2016 below from the Canadian Ice Service (some slushy ice looks to be forming along the coast north of Churchill — this is how freeze - up startice condition of Hudson Bay at 1 November 2016 below from the Canadian Ice Service (some slushy ice looks to be forming along the coast north of Churchill — this is how freeze - up startIce Service (some slushy ice looks to be forming along the coast north of Churchill — this is how freeze - up startice looks to be forming along the coast north of Churchill — this is how freeze - up starts).

«We are off to a great start collecting a timely and unique dataset to help better understand the potential influence of clouds on the Arctic climate as sea ice conditions change,» said William Smith, ARISE principal investigator at NASA's Langley Research Center in Hampton, Virginia.

Although July data indicated that the sea ice might be on track for a slight recovery from 2007 (though still well below «normal» climatological conditions), new sea ice data and weather forecasts show that total ice extent in early August declined at about twice the rate of any other time this summer.

At the pan-arctic level, the two coupled ice - ocean model ensemble simulations (Kauker, Zhang) show good agreement, in particular regarding ice conditions in the East Siberian Sea.

These authors postulated an extended Barents Sea Ice Sheet, the western part of the huge Eurasian Ice Sheet51, 55, that had reached the shelf edge causing polynya - like open - water conditions (triggered by strong katabatic winds) with phytoplankton and sea ice algae production, subglacial meltwater outflow and the deposition of suspended material on the slope at site PS2138 -Sea Ice Sheet, the western part of the huge Eurasian Ice Sheet51, 55, that had reached the shelf edge causing polynya - like open - water conditions (triggered by strong katabatic winds) with phytoplankton and sea ice algae production, subglacial meltwater outflow and the deposition of suspended material on the slope at site PS2138 -Ice Sheet, the western part of the huge Eurasian Ice Sheet51, 55, that had reached the shelf edge causing polynya - like open - water conditions (triggered by strong katabatic winds) with phytoplankton and sea ice algae production, subglacial meltwater outflow and the deposition of suspended material on the slope at site PS2138 -Ice Sheet51, 55, that had reached the shelf edge causing polynya - like open - water conditions (triggered by strong katabatic winds) with phytoplankton and sea ice algae production, subglacial meltwater outflow and the deposition of suspended material on the slope at site PS2138 -sea ice algae production, subglacial meltwater outflow and the deposition of suspended material on the slope at site PS2138 -ice algae production, subglacial meltwater outflow and the deposition of suspended material on the slope at site PS2138 - 2.

Whereas at the three sites from the central Arctic Ocean an extended to perennial sea ice cover was probably predominant, sea ice conditions were much more variable along the northern Barents Sea continental margin as reflected in the data of Core PS2138 - 2 (Fig. 2sea ice cover was probably predominant, sea ice conditions were much more variable along the northern Barents Sea continental margin as reflected in the data of Core PS2138 - 2 (Fig. 2sea ice conditions were much more variable along the northern Barents Sea continental margin as reflected in the data of Core PS2138 - 2 (Fig. 2Sea continental margin as reflected in the data of Core PS2138 - 2 (Fig. 2d).

For more on the terrestrial foods topic, see my detailed discussion in this previous post, and this recent (March 30) ScienceNews report on yet another, largely anecdotal «polar bears resort to bird eggs because of declining sea ice» story (see photo below, based on a new paper by Prop and colleagues), which was also covered March 31 at the DailyMail («Polar bears are forced to raid seabird nests as Arctic sea ice melts — eating more than 200 eggs in two hours,» with lots of hand - wringing and sea ice hype but little mention of the fact that there are many more bears now than there were in the early 1970s around Svalbard or that the variable, cyclical, AMO (not global warming) has had the largest impact on sea ice conditions in the Barents Sesea ice» story (see photo below, based on a new paper by Prop and colleagues), which was also covered March 31 at the DailyMail («Polar bears are forced to raid seabird nests as Arctic sea ice melts — eating more than 200 eggs in two hours,» with lots of hand - wringing and sea ice hype but little mention of the fact that there are many more bears now than there were in the early 1970s around Svalbard or that the variable, cyclical, AMO (not global warming) has had the largest impact on sea ice conditions in the Barents Sesea ice melts — eating more than 200 eggs in two hours,» with lots of hand - wringing and sea ice hype but little mention of the fact that there are many more bears now than there were in the early 1970s around Svalbard or that the variable, cyclical, AMO (not global warming) has had the largest impact on sea ice conditions in the Barents Sesea ice hype but little mention of the fact that there are many more bears now than there were in the early 1970s around Svalbard or that the variable, cyclical, AMO (not global warming) has had the largest impact on sea ice conditions in the Barents Sesea ice conditions in the Barents SeaSea).

While sea ice extent at the beginning of July and weather conditions in June and July were largely conducive to a new sea ice extent minimum, weather in August and September was unfavorable.

September 2008 sea ice extent was driven by preexisting conditions at the end of spring, as well as variable wind patterns over the summer.

As noted last month, this range depends in part on the relative weight that the respondents give to «initial conditions,» e.g., age and thickness of sea ice at the end of spring, versus whether summer winds in 2008 will be as supportive for ice loss as the favorable winds were in 2007.

A key question to be addressed was: How important were initial conditions of the sea ice at the end of spring versus anomalous summer meteorological forcing in driving the second sequential major September sea ice minimum?

Then things took a turn for the worse, and sea ice was at record or near - record low conditions for most of the summer.

So, prompted by reports of the heaviest sea ice conditions on the East Coast «in decades» and news that ice on the Great Lakes is, for mid-April, the worst it's been since records began, I took a close look at ice thickness charts for the Arctic.

Summer meteorological current conditions and projections this summer (see Figures 9 - 11) do not favor extreme mid to late summer sea ice loss in 2016, as occurred in 2007 and 2012, despite low sea ice extents at the beginning of summer.

Ice loss during the second half of August was in fact the slowest observed during the last decade, resulting in the observed, unexceptional September sea ice extent being recorded despite the extremely low ice conditions present at the start of the summIce loss during the second half of August was in fact the slowest observed during the last decade, resulting in the observed, unexceptional September sea ice extent being recorded despite the extremely low ice conditions present at the start of the summice extent being recorded despite the extremely low ice conditions present at the start of the summice conditions present at the start of the summer.

Warm conditions with temperatures at the 925 hPa level of 1 to 2 degrees Celsius (2 to 4 degrees Fahrenheit) above average graced the northernmost coasts of Alaska, Canada, and Greenland, but the thick sea ice that is typical of this region is unlikely to melt out.

Because sea ice conditions in the Antarctic are different from the Arctic, we would not expect identical effects at the two poles.

Such weather patterns, which can feature relatively mild conditions in the Arctic at the same time dangerously cold conditions exist in vast parts of the lower 48, may be tied to the rapid warming and loss of sea ice in the Arctic due, in part, to manmade climate change.

It would have much greater impact at the North Pole altering conditions of the Arctic Basin including the sea ice, the snow line, the tree line, the albedo, and ocean circulation, among other conditions.

Using a model that tracked a range of habitat conditions, including water temperature and depth from sea ice, to predict which habitats would be most impacted by climate change, William Cheung, the study's lead author, and his colleagues found that around 50 species of commercial fishes living near or at the poles will go extinct within the next 4 decades.

Under those conditions, Earth had little ice, and sea level was at least 60 metres higher than current levels.

Correction: August 29, 2000, Tuesday A front - page article on Aug. 19 and a brief report on Aug. 20 in The Week in Review about the sighting of open water at the North Pole misstated the normal conditions of the sea ice there.

At the end of the first week of August, Howell et al. report that sea ice conditions in the Northwest Passage are very light with sea ice mostly present at the eastern and western ends of the Parry Channel Region (Figure 4At the end of the first week of August, Howell et al. report that sea ice conditions in the Northwest Passage are very light with sea ice mostly present at the eastern and western ends of the Parry Channel Region (Figure 4at the eastern and western ends of the Parry Channel Region (Figure 4).

At the same time, substantial and early ice retreat in the Kara Sea (see contribution by Gerland et al., below) has resulted in favorable shipping conditions along the Northern Sea Route (NSR).

In August, warmer conditions returned, which combined with a rather diffuse ice cover in the Beaufort and Chukchi seas, has led to a speed - up in the rate of ice loss at the beginning of August, particularly in the Chukchi Sea.