Sentences with phrase «sea ice melt season»

IceBridge is flying out of Barrow, Alaska, during sea ice melt season to capture melt pond observations at a scale never before achieved.

The 2015 Arctic sea ice melt season was a little lower than 2013 and 2014, but sea ice volume continues to increase.

According to the press release: «This trio of images shows changes between 1979 and 2007 in the average date of melt onset in the spring (left), the first autumn freeze (center), and the total average increase in the length of the Arctic sea ice melt season.

What seems likely to be the most interesting period of the 2017 Arctic sea ice melting season is upon us!

Not exact matches

Satellite data show that, between 1979 and 2013, the summer ice - free season expanded by an average of 5 to 10 weeks in 12 Arctic regions, with sea ice forming later in the fall and melting earlier in the spring.

«This knowledge about how Arctic sea ice melts over the course of the summer season will be valuable in further research,» he says.

Some analyses have hinted the Arctic's multiyear sea ice, the oldest and thickest ice that survives the summer melt season, appeared to have recuperated partially after the 2012 record low.

But according to Joey Comiso, a sea ice scientist at Goddard, the recovery flattened last winter and will likely reverse after this melt season.

Starting next week, NASA's Operation IceBridge, an airborne survey of polar ice, will be carrying science flights over sea ice in the Arctic, to help validate satellite readings and provide insight into the impact of the summer melt season on land and sea ice.

This year's record low sea ice maximum extent might not necessarily lead to a new record low summertime minimum extent, since weather has a great impact on the melt season's outcome, Meier said.

But over the past decades, the melt season has grown longer and the average extent of Arctic sea ice has diminished, changing the game for many Arctic marine mammals — namely beluga, narwhal and bowhead whales; ringed, bearded, spotted, ribbon, harp and hooded seals; walruses; and polar bears.

A study examined three different factors: warmer - than - usual surface atmosphere conditions (related to global warming); sea - ice thinning prior to the melting season (also related to global warming); and an August storm that passed over the Arctic, stirring up the ocean, fracturing the sea ice and sending it southward to warmer climes.

Research led by Eric Post, a professor of biology at Penn State University, has linked an increasingly earlier plant growing season to the melting of arctic sea ice, a relationship that has consequences for offspring production by caribou in the area.

But this year, a big spring meltdown in October and November suddenly reversed that trend and has led to continued record low sea ice levels as the summer melt season progressed.

Climate change is pushing temperatures up most rapidly in the polar regions and left the extent of Arctic sea ice at 1.79 million square miles at the end of the summer melt season.

In the Antarctic, where the summer season just wrapped up, rapid ice melt led to the lowest sea ice minimum ever recorded for the area.

This report describes simulations of future sea - ice extent using the NCAR CCSM3, which point to the possible complete loss of sea - ice at the end of the melt season as soon as 2040.

The sea ice that caps the Arctic Ocean naturally waxes and wanes with the seasons, reaching its maximum area at the end of winter, before the reemergence of the sun in spring starts off the melt season.

«Sea ice status now; projection for rest of melt season, implications to extreme weather events and global food supply.»

Meanwhile, in Antarctica, sea ice has already reached its minimum extent following the summer melt season.

The volume of sea ice left at the end of the summer melt season seems to vary more from year to year than had perhaps been previously appreciated; after declining for several years, sea ice volume shot up after the unusually cool summer of 2013, the data revealed.

And summer is prime melt season, when the sun's rays beat down on the ice, causing meltwater to pool on the surface and drain down through the ice sheet and out to sea.

During the melt season the albedo of seasonal ice is less than multiyear Seasonal ice absorbs and transmits more sunlight to ocean than multiyear Albedo evolution of seasonal sea ice has 7 phases

If you believe that it is not warming then please explain the melting of glaciers, loss of sea ice, longer growing seasons, migration of species, increased humidity, and sea level rise.

BTW, my fearless «denialism forecast» for the next month is for declining mentions of surface temperature trends, 30 - 50 % chance of more scientist bashing, and sporadic outbreaks of «Arctic sea ice recovery» — at least until the melting season gathers some steam.

If the Spring losses are not due to weather but are due to some other factor then they hold open the possibility that increasing and maintained Spring losses could be enough to increase the overall melt season loss so as to leave the Arctic virtually sea ice free by September.

Also good to remember is that there is a high probability that the effects of Arctic sea ice decline are felt before the Arctic becomes effectively ice - free (below 1 million km2 sea ice area at the end of a melting season).

Arctic sea ice has been shrinking more rapidly, falling to its lowest volume and second lowest area on record during the 2011 summer melt season.

Re # 49 & # 82 The limitations on the growth of algae in the arctic varies with the season, the effect of sea - ice melting is not as certain as Harold would have us believe: http://www.agu.org/pubs/crossref/2005/2005JC002922.shtml http://www.nurp.noaa.gov/Spotlight/ArcticIce.htm

Whether the area around the North Pole is free of sea - ice at the end of this year's melt season is not the important problem.

ScienceDaily (Oct. 3, 2008)-- Arctic sea ice extent during the 2008 melt season dropped to the second - lowest level since satellite measurements began in 1979, reaching the lowest point in its annual cycle of melt and growth on Sept. 14, according to researchers at the University of Colorado at Boulder's National Snow and Ice Data Center.&raqice extent during the 2008 melt season dropped to the second - lowest level since satellite measurements began in 1979, reaching the lowest point in its annual cycle of melt and growth on Sept. 14, according to researchers at the University of Colorado at Boulder's National Snow and Ice Data Center.&raqIce Data Center.»

None of the sea - ice specialists I've interviewed since 2000 on Arctic trends ever predicted a straight - line path to an open - water Arctic, but quite a few have stressed the longstanding idea that as white ice retreats, solar energy that would have been reflected back into space is absorbed by the dark sea, with that heat then melting existing ice and shortening the winter frozen season.

This report describes simulations of future sea - ice extent using the NCAR CCSM3, which point to the possible complete loss of sea - ice at the end of the melt season as soon as 2040.

Abstract: «Comparison of sea - ice draft data acquired on submarine cruises between 1993 and 1997 with similar data acquired between 1958 and 1976 indicates that the mean ice draft at the end of the melt season has decreased by about 1.3 m in most of the deep water portion of the Arctic Ocean, from 3.1 m in 1958 — 1976 to 1.8 m in the 1990s...»

This causes increased erosion due to permafrost melt, increased flooding due to the warmer temperatures, and intensified storms because the sea ice forms later in the season and is unable to provide a natural barrier for our coastal communities.

Recent changes in Arctic sea ice melt onset, freeze - up, and melt season length.

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).

With two to three more weeks left in the melt season, sea ice continues to track below 2007 daily extents.

Changes in Arctic melt season and implications for sea ice loss.

Currently, the NASA IceBridge mission supplies both sea ice thickness and snow depth measurements in spring, providing timely information on the state of the ice cover as the melt season begins.

Multi-year ice is sea ice that has survived at least one summer melt season.

«Based on relationships established in previous studies, the extreme negative phase of the Arctic Oscillation (AO) that characterized winter of 2009/2010 should have favored retention of Arctic sea ice through the 2010 summer melt season.

Recently published research by Barber and colleagues shows that the ice cover was even more fragile at the end of the melt season than satellite data indicated, with regions of the Beaufort and Chukchi Seas covered by small, rotten ice floes.

We revisited the SHEBA dataset, focusing first on the Arctic winter when there is no sunlight and the ice is too cold to melt, to understand how winter weather «prepares» the sea ice for the spring melt season.

If you want to follow the details of what is going on during this melt season, check out Arctic Sea Ice Blog and Dosbat.

Ice retreat depends strongly on the amount of solar heating of the surface ice and ocean; clear sky conditions early in the melt season can go a long ways towards helping ice retreat later in the season, so this is one of the variables that will be monitored closely (e.g., in the Barrow coastal sea ice break - up forecast, see beloIce retreat depends strongly on the amount of solar heating of the surface ice and ocean; clear sky conditions early in the melt season can go a long ways towards helping ice retreat later in the season, so this is one of the variables that will be monitored closely (e.g., in the Barrow coastal sea ice break - up forecast, see beloice and ocean; clear sky conditions early in the melt season can go a long ways towards helping ice retreat later in the season, so this is one of the variables that will be monitored closely (e.g., in the Barrow coastal sea ice break - up forecast, see beloice retreat later in the season, so this is one of the variables that will be monitored closely (e.g., in the Barrow coastal sea ice break - up forecast, see beloice break - up forecast, see below).

While the 2010 melt season started with more multi-year ice (MYI) in the Beaufort and Chukchi seas than seen in recent years and an overall greater percentage of MYI arctic - wide, by the end of August nearly all of this MYI had melted out or ice concentration had fallen below 40 %.

Large - scale warming in the Arctic [Johannessen et al., 2004] has resulted in an extension of the length of the summer melt season over sea ice [Smith, 1998; Rigor et al., 2000], thawing permafrost [Osterkamp and Romanovsky, 1999], and near - coastal thinning and overall shrinkage of the Greenland ice sheet [Krabill et al., 1999; Lemke et al., 2007, and references therein].

As one goes further north toward the North Pole, the length of the shortwave radiation season is shortened with less ability to melt out multi-year sea ice (D. Perovich, personal communication).

This year we have seen the Arctic sea - ice melting season once again reported by contrarians as a recovery, although as the graph below, from the National Snow and Ice Data Center, clearly shows, there have been a number of «recoveries» in previous years tice melting season once again reported by contrarians as a recovery, although as the graph below, from the National Snow and Ice Data Center, clearly shows, there have been a number of «recoveries» in previous years tIce Data Center, clearly shows, there have been a number of «recoveries» in previous years too.