Sentences with phrase «loss of sea ice extent»

«It is very likely that there will be continued loss of sea ice extent in the Arctic, decreases of snow cover, and reductions of permafrost at high latitudes of the Northern Hemisphere by 2016 — 2035.

Figure 4 shows a loss of sea ice extent through May below the 2007 level (National Snow and Ice Data Center plot); contributions to the loss were especially important from the Barents and Chukchi Seas (Figure 5).

Further, Figure 4 shows a major loss of sea ice extent through May; contributions to the loss were especially important from the Barents Sea and northern Baffin Bay (Figure 5).

The remaining estimates fall into «high» and «low» extent groupings: the low extent group with a range of 4.2 to 4.7 million square kilometers, representing a continued loss of sea ice extent compared to 2008/2009, and the high extent group of 5.4 to 5.7 million square kilometers, suggesting a return to the long - term trend for summer sea ice loss.

For the AGW Warmers — a relatively short time ago — loss of sea ice extent was all the rage as an indicator of Catastrophic Global Warming... The artic was the proverbial Canary in the Global Warming Coal mine that was twittering warnings of the demise of the world.

Figure 7 shows a loss of sea ice extent through May 2013 (National Snow and Ice Data Center).

Not exact matches

They then used the satellite record of Arctic sea ice extent to calculate the rates of sea ice loss and then projected those rates into the future, to estimate how much more the sea ice cover may shrink in approximately three polar bear generations, or 35 years.

Antarctic sea ice saw an early maximum extent in 2016, followed by a very rapid loss of ice starting in early September.

Complementary analyses of the surface mass balance of Greenland (Tedesco et al, 2011) also show that 2010 was a record year for melt area extent... Extrapolating these melt rates forward to 2050, «the cumulative loss could raise sea level by 15 cm by 2050 ″ for a total of 32 cm (adding in 8 cm from glacial ice caps and 9 cm from thermal expansion)- a number very close to the best estimate of Vermeer & Rahmstorf (2009), derived by linking the observed rate of sea level rise to the observed warming.

Despite an especially warm winter, the current extent of sea ice does not represent a new record low; nevertheless, the amount of ice loss is massive.

Since 1979, winter sea ice extent has decreased 3.2 percent per decade (the loss is much more pronounced in summer at a rate of 13.4 percent per decade).

The global mean temperature rise of less than 1 degree C in the past century does not seem like much, but it is associated with a winter temperature rise of 3 to 4 degrees C over most of the Arctic in the past 20 years, unprecedented loss of ice from all the tropical glaciers, a decrease of 15 to 20 % in late summer sea ice extent, rising sealevel, and a host of other measured signs of anomalous and rapid climate change.

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 motivation for this time series is to visualize the fact that the long term Arctic - wide loss of sea ice is not only happening in extent, which is well measured by satellites, but also in thickness, which isn't.

The lag between decreases in sea ice extent during late summer and changes in the mid-latitude atmospheric circulation during other seasons (when the recent loss of sea ice is much smaller) needs to be reconciled with theory.

IPCC / NSIDC trends [based on SIE sea ice extent] underestimate the real speed of ASI loss — true / false / maybe.

Global climate model projections (in CMIP3 at least) appear to underestimate sea ice extent losses with respect to observations, though this is not universally true for all models and some of them actually have ensemble spreads that are compatible with PIOMAS ice volume estimates and satellite observations of sea ice extent.

The lag between decreases in sea ice extent during late summer and changes in the mid-latitude atmospheric circulation during other seasons (like autumn and winter, when the recent loss of sea ice is much smaller) have been demonstrated empirically, but have not been captured by existing dynamical models.

The study, being published in Geophysical Research Letters, also looked back at recent ice behavior and concluded that «internal variability explains approximately half of the observed 1979 — 2005 September Arctic sea ice extent loss.»

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.

Provided that ocean and atmospheric conditions favor rapid melting in June and July, which we feel are still likely, it is therefore hypothesized that the 2013 fall sea ice extent will achieve values comparable to those of 2012, with regional losses governed by local wind and ice conditions and dynamics.

Tagged annual summer minimum, arctic sea ice, Beaufort Sea, body condition, Cherry, Chukchi, declining sea ice, Eastern Beaufort, good news, heavy sea ice, Hudson Bay, ice - free Arctic, litter size, loss of summer ice, Pilfold, polar bear, record low, Regehr, ringed seals, Rode, sea ice extent, Southern Beaufort, Stirling, summer ice minimum, summer sea ice, thick spring sea ice, Beaufort Sea, body condition, Cherry, Chukchi, declining sea ice, Eastern Beaufort, good news, heavy sea ice, Hudson Bay, ice - free Arctic, litter size, loss of summer ice, Pilfold, polar bear, record low, Regehr, ringed seals, Rode, sea ice extent, Southern Beaufort, Stirling, summer ice minimum, summer sea ice, thick spring Sea, body condition, Cherry, Chukchi, declining sea ice, Eastern Beaufort, good news, heavy sea ice, Hudson Bay, ice - free Arctic, litter size, loss of summer ice, Pilfold, polar bear, record low, Regehr, ringed seals, Rode, sea ice extent, Southern Beaufort, Stirling, summer ice minimum, summer sea ice, thick spring sea ice, Eastern Beaufort, good news, heavy sea ice, Hudson Bay, ice - free Arctic, litter size, loss of summer ice, Pilfold, polar bear, record low, Regehr, ringed seals, Rode, sea ice extent, Southern Beaufort, Stirling, summer ice minimum, summer sea ice, thick spring sea ice, Hudson Bay, ice - free Arctic, litter size, loss of summer ice, Pilfold, polar bear, record low, Regehr, ringed seals, Rode, sea ice extent, Southern Beaufort, Stirling, summer ice minimum, summer sea ice, thick spring sea ice extent, Southern Beaufort, Stirling, summer ice minimum, summer sea ice, thick spring sea ice, thick spring ice

Millions of square kilometers sea ice extent Month — last 5 years — baseline End July — 8.73 — 10.10 End Aug — 6.04 — 7.67 End Sep — 5.02 — 7.04 Average — 6.60 — 8.27 Difference 1.67 million square kilometers (msk) Cumulated loss = 20 %

What is also stunning are sea - ice daily extent figures averaging ice loss of more than 100,000 square kilometres per day for the last four days.

«However, ice loss continued north of the Laptev Sea, opening up a gap in the ice cover that reduced extent.»

The global climate models used in the 2007 IPCC report also failed to acount for the extent of Arctic sea ice loss (Figure 9).

I thought this was an area of specialty of yours and this storm and the resultant large loss of sea ice area and extent certainly were to topic of conversation among those who follow the cryosphere closely.

The spread of Outlook contributions suggests about a 29 % chance of reaching a new September sea ice minimum in 2010 and only an 18 % chance of an extent greater than the 2009 minimum (or a return to the long - term trend for summer sea ice loss).

Unprecedented warm temperatures lead to the loss of more than half of the sea ice cover in the Bering Sea in two weeks, resulting in record lows for Arctic Ocean sea ice extent for the month of Februasea ice cover in the Bering Sea in two weeks, resulting in record lows for Arctic Ocean sea ice extent for the month of FebruaSea in two weeks, resulting in record lows for Arctic Ocean sea ice extent for the month of Februasea ice extent for the month of February.

The outlook for the pan-arctic sea ice extent in September 2008, based on July data, indicates a continuation of dramatic arctic sea ice loss.

Still, the consensus of a stable low level of sea ice extent or continued modest sea ice loss is a strong result.

Reasoning for a decrease in sea ice extent from recent years, perhaps approaching new record - low minimum, focuses on the below - normal sea ice thickness overall, the thinning of sea ice in coastal seas, rotting of old multi-year sea ice, warm temperatures in April and May 2010, and the rapid loss of sea ice area seen during May.

Looking at AR5, these seem to be the take away messages: «Comparing trends from the CCSM4 ensemble to observed trends suggests that internal variability could account for approximately half of the observed 1979 — 2005 September Arctic sea ice extent loss.»

Lukovich et al, 4.3, n / a, Heuristic It is hypothesized that the 2012 fall sea ice extent will attain values comparable to those of 2011 based on a heuristic assessment of sea ice and surface atmospheric dynamics, with regional losses governed by local wind and ice conditions.

Further, it only took one month of persistent wind conditions to slow the rate of sea ice loss, resulting in an increase in 2009 sea ice extent compared to 2007 and 2008.

«The current rate of sea ice loss, and the reduced thickness of large areas of the ice remaining, suggests that we may see yet another record minimum in summer sea ice extent this year.»

The outlook for the pan-arctic sea ice extent in September 2008 indicates a continuation of the recent trend of sea ice loss.

Five (5) respondents suggest a return toward the long term trend line of summer sea ice loss, but less than the 1979 - 2000 mean extents;

Arctic «sea ice extent has varied naturally over the decades with some Russian data suggesting similar or even greater ice loss in some local areas in the 1930s» — Analysis of Arctic ice: «Russian data shows that the [Arctic] ice was just as thin in 1940 as it is now.

Different seasonal progressions of summer sea ice loss are apparent in daily time series of sea ice extent from different years (Figure 4).

Earlier studies have predominately focused on the loss of sea ice concentration (fraction of ice within an area) and therefore the total sea ice extent (Fig. 1).

Tied for fourth lowest sea ice extent, in a three - way tie for lowest sea ice volume, the fastest one month sea ice loss for the date, and unusual Arctic cyclone activity affecting the decayed ice of the polar regions, focus just on the lake too trivializes what's happening in a region the size of the Arctic Ocean.

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.

Over the satellite era, the rate of spring snow loss is similar to that of late - summer Arctic sea ice extent, with each at an accelerated pace over the past decade.

To say nothing of the warming trends also noticed in, for example: * ocean heat content * wasting glaciers * Greenland and West Antarctic ice sheet mass loss * sea level rise due to all of the above * sea surface temperatures * borehole temperatures * troposphere warming (with stratosphere cooling) * Arctic sea ice reductions in volume and extent * permafrost thawing * ecosystem shifts involving plants, animals and insects

This pattern is supportive of sea ice loss in the Pacific sector of the Arctic as suggested by the sea ice extent analysis in Figure 2, and has been an important sea ice loss climate pattern since 2005, especially in summer 2007.

For example, chapter ten, «Ice melts, sea level rises,» discusses the disappearance of tropical mountain glaciers, estimates of sea level rise in the present century, estimates of its costs — the EPA estimated in 1991 that a one - meter rise would cost the US alone between $ 270 billion and $ 475 billion — evidence of past oceanic high - water marks and glacial extents, the dynamics of ice sheet disintegration, the thermal expansion of seawater, icequakes and meltponds, ice mass loss and gain in Greenland and Antarctica, the ozone hole, and the existence and significance of «marine ice sheets.&raqIce melts, sea level rises,» discusses the disappearance of tropical mountain glaciers, estimates of sea level rise in the present century, estimates of its costs — the EPA estimated in 1991 that a one - meter rise would cost the US alone between $ 270 billion and $ 475 billion — evidence of past oceanic high - water marks and glacial extents, the dynamics of ice sheet disintegration, the thermal expansion of seawater, icequakes and meltponds, ice mass loss and gain in Greenland and Antarctica, the ozone hole, and the existence and significance of «marine ice sheets.&raqice sheet disintegration, the thermal expansion of seawater, icequakes and meltponds, ice mass loss and gain in Greenland and Antarctica, the ozone hole, and the existence and significance of «marine ice sheets.&raqice mass loss and gain in Greenland and Antarctica, the ozone hole, and the existence and significance of «marine ice sheets.&raqice sheets.»

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.

Much was made of this major loss rate and low extent in the press and sea ice blogs.

Just after the June Outlook was completed (based on May data), arctic sea ice extent briefly set record daily rates of loss.