Sentences with phrase «of sea ice coverage»

The interannual variation of sea ice coverage is much larger than any trend (Fig 2).

600 At all stages, seeds of regime reversal are embedded within the collection of sub-processes regulating the Arctic freshwater balance, thereby subtly and incrementally imposing «curbs» on the prevailing trend of sea ice coverage, assuring an inevitable regime reversal years in the future.

The loss of sea ice coverage is expected to negatively impact its annual migration and winter survival while projected heavier snowfall could reduce the suitability of nest sites.

Air temperatures in the Arctic are determined by the amount of sea ice coverage.

Progress in understanding this connection has converged on two key factors: (1) the variability of autumn snow cover in Eurasia, and (2) the variability of sea ice coverage in the Barents - Kara Sea during late fall and early winter.

It's also worth noting that the area of sea ice coverage is influenced by the wind, and the rapid area loss of last summer was mainly wind - driven — but thin sea ice is more sensitive to wind forcing than thick sea ice is.

Not exact matches

His 2011 data show the lowest coverage of sea ice since records began.

Last Friday afternoon, on a conference call hosted by the National Research Council to present a recent report on the Arctic region, Stephanie Pfirman, an environmental science professor at Barnard College, said Arctic ice coverage is shrinking and that thicker sea ice blocks, which anchor much of the landscape, are rapidly melting.

The Arctic Ocean's end - of - summer sea ice coverage has decreased, on average, more than 13 percent per decade since 1979.

The team used a worldwide climate model that incorporated normal month - to - month variations in sea surface temperatures and sea ice coverage, among other climate factors, to simulate 12,000 years» worth of weather.

Again, Monckton must surely know full well that for the last 25 - 30 years satellite temperature measurement of sea and land surface have replaced terrestrial temperature station measurements in many cases since these give a much greater coverage (70 % of the surface of the Earth is water... it's difficult to put weather stations on top of ice sheets etc.!)

The extent of global sea ice coverage reached its smallest area ever recorded in 2016, new data show.

The latest data by NSIDC for Arctic sea ice extent shows that 2008 ice coverage has fallen to 2007 levels for the end of May:

The final analysis will probably show slightly smaller changes because of the coverage / sea ice issues.

This positive climate feedback is greater than expected from the additional forcing alone, due to amplification by reduced surface albedo through melting of continental snow and decreased sea - ice coverage, especially in the wintertime.

During the so - called Holocene Climate Optimum, from approximately 8000 to 5000 years ago, when the temperatures were somewhat warmer than today, there was significantly less sea ice in the Arctic Ocean, probably less than 50 % of the summer 2007 coverage, which is absolutely lowest on record.

Although a recent downward trend in coverage is clearly visible by naked eye inspection, Goddard invites us to believe there has ``... been no net gain or loss of polar sea ice since records began.»

One possible explanation is that the CMIP5 models underestimate the strength of the feedback as did the CMIP3 models based upon the systematic errors in simulated sea ice coverage decline relative to observed rates (Boe et al., 2009b).

Analysis of observed declines in sea ice and snow coverage from 1979 to 2008 suggests that the NH albedo feedback is between 0.3 and 1.1 W m — 2 °C — 1 (Flanner et al., 2011).

Unfortunately, the tough scientific work to clarify ice and sea trends and dynamics has largely been obscured online by coverage focused on an error on Greenland ice loss that many polar scientists say made it into the new edition of the Times Comprehensive Atlas of the World (that's the British Times, just to be clear).

You can find out more (and see links to my earlier coverage of Arctic sea - ice trends, and what's going on with sea ice at the other end of the planet) in my latest post on Dot Earth.

The same sea - ice experts foreseeing a new record retreat of the Arctic Ocean coverage this summer have explanations for the flow between Greenland and Iceland, too.]

The different color shading indicates the coverage of sea ice.

Drawing on Hadley Centre Sea Ice and Sea Temperature data from 1953 to 1978 and the National Snow and Ice Data Center's Sea Ice Index from 1979 to 2015, the researchers computed 30 - year running averages of September sea ice coverage — that is, they computed averages for the years 1953 — 83, 1954 — 84, 1955 — 85, and so Sea Ice and Sea Temperature data from 1953 to 1978 and the National Snow and Ice Data Center's Sea Ice Index from 1979 to 2015, the researchers computed 30 - year running averages of September sea ice coverage — that is, they computed averages for the years 1953 — 83, 1954 — 84, 1955 — 85, and so Ice and Sea Temperature data from 1953 to 1978 and the National Snow and Ice Data Center's Sea Ice Index from 1979 to 2015, the researchers computed 30 - year running averages of September sea ice coverage — that is, they computed averages for the years 1953 — 83, 1954 — 84, 1955 — 85, and so Sea Temperature data from 1953 to 1978 and the National Snow and Ice Data Center's Sea Ice Index from 1979 to 2015, the researchers computed 30 - year running averages of September sea ice coverage — that is, they computed averages for the years 1953 — 83, 1954 — 84, 1955 — 85, and so Ice Data Center's Sea Ice Index from 1979 to 2015, the researchers computed 30 - year running averages of September sea ice coverage — that is, they computed averages for the years 1953 — 83, 1954 — 84, 1955 — 85, and so Sea Ice Index from 1979 to 2015, the researchers computed 30 - year running averages of September sea ice coverage — that is, they computed averages for the years 1953 — 83, 1954 — 84, 1955 — 85, and so Ice Index from 1979 to 2015, the researchers computed 30 - year running averages of September sea ice coverage — that is, they computed averages for the years 1953 — 83, 1954 — 84, 1955 — 85, and so sea ice coverage — that is, they computed averages for the years 1953 — 83, 1954 — 84, 1955 — 85, and so ice coverage — that is, they computed averages for the years 1953 — 83, 1954 — 84, 1955 — 85, and so on.

The estimates also suggests, based on current sea - ice coverage, that it will take another trillion metric tons of carbon dioxide emissions before Arctic summer sea ice more or less vanishes.

By contrast atmospheric temperature amplification is not evident in the Antarctic which is insulated by relatively stable circumpolar winds, persistent sea - ice coverage and the loss of tropospheric ozone.

-- Susan Solomon, Nature The Long Thaw is written for anyone who wishes to know what cutting - edge science tells us about the modern issue of global warming and its effects on the pathways of atmospheric chemistry, as well as global and regional temperatures, rainfall, sea level, Arctic sea - ice coverage, melting of the continental ice sheets, cyclonic storm frequency and intensity and ocean acidification.

For example, let's say that evidence convinced me (in a way that I wasn't convinced previously) that all recent changes in land surface temperatures and sea surface temperatures and atmospheric temperatures and deep sea temperatures and sea ice extent and sea ice volume and sea ice density and moisture content in the air and cloud coverage and rainfall and measures of extreme weather were all directly tied to internal natural variability, and that I can now see that as the result of a statistical modeling of the trends as associated with natural phenomena.

Lacking a more direct measure of the relationship between bearded seal vital rates and ice coverage, the BRT assumed that this preference relationship reflects the species requirements for sea - ice coverage.»

Antarctic sea ice coverage is slightly above average and the growth varies from one part of Antarctica to another.

«The time of occurrence of the maximum and minimum sea ice coverage in the Arctic showed slight trends towards occurring earlier in the year, although not significant.

Morover, I think you really should look at more recent work by Polyakov — say, his 2012 paper, «Recent Changes of Arctic Multiyear Sea Ice coverage and the Likely Causes.»

BBC News reports that data from Europe's Cryosat spacecraft shows that Arctic sea ice coverage was nearly 9,000 cubic kilometers (2,100 cubic miles) by the end of this year's melting season, up from about 6,000 cubic kilometers (1,400 cubic miles) during the same time last year.

Sea levels are a foot higher and Arctic ice coverage is at the lowest levels ever — the ice was gone as of March, months early.

The coupling of IP25 with phytoplankton biomarkers such as brassicasterol or dinosterol proves to be a viable approach to determine (spring / summer) sea ice conditions as is demonstrated by the good alignment of the PIP25 - based estimate of the recent sea ice coverage with satellite observations38.

As a consequence, any sea ice coverage ensemble forecast that uses the 2007 temperature and specific humidity fields as part of the input surface BCs will approximately have the 2007 sea ice minimum as the lower end estimate of the ensemble.

To make use of that potential we would need good estimates of sea ice thickness, such as might be obtained from ICESat or CryoSat (i.e., complete spatial coverage).

In addition, a combination of thinner sea ice initial conditions [Kwok and Rothrock 2009] and high surface temperature would significantly reduce arctic sea ice coverage.

Arctic sea ice coverage is approaching the record minimum for late October of two years ago, according to the latest NSIDC plot.

Although there is significant season - to - season and year - to - year variability of world sea - ice coverage, there is no dramatic trend in global sea - ice loss.

Some have claimed it was complete global coverage of sea, though it seems me more would claim there remained corridor of tropical ocean which remain ice free.

This 7.8 million square kilometers of effective reflective sea ice is about 1.7 percent of the cloud coverage.

The cloud coverage in the Arctic is about 60 percent in the winter so only 40 percent of the 15 million square kilometers of sea ice is reflecting the Sun's radiation.

The reason it is a mystery is because that increase in sea ice coverage is contrary to the theory of global warming.

It seems to me the variables effecting the amount or coverage of sea ice, be it old vr.

Slate's Phil Plait was responsibly reserved in his coverage, emphasizing that although one of the press releases used the word «collapse,» the melting of this particular glacier — which by itself contains enough ice to raise global seas by three feet — is a process that will take centuries, if not longer, to play out.

This coincided with record - breaking shrinkage of Arctic sea ice, where total coverage at the peak of melting season is now 40 percent lower than in the late 1970s.

How about the Roman Warm Period era, when Arctic temperatures were 2 to 6 degrees C warmer than now and the Arctic had less than 50 % sea ice coverage 6 months of the year vs. just 1.5 months of < 50 % sea ice coverage during the post-1950s «Anthropocene»?

The separation in REA16 of the effect of masking from that of sea ice changes on blending air and water temperature changes is somewhat artificial, since HadCRUT4 has limited coverage in areas where sea ice occurs.

Sea ice coverage is particularly low in the Barents and Kara seas, which sit north of Scandinavia and Russia and have been in the path of those incoming storms.