Sentences with phrase «sea ice coverage on»

Not exact matches

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 ice coverage on the Arctic Ocean shriveled last September to 1.32 million square miles, the smallest expanse ever recorded and less than half the area covered by sea ice three decades ago.

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

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.!)

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.

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.

Given that this summer's minimum has fallen below last year's and will settle in at the 2nd or 3rd lowest on record, last summer's minimum now appears more as a bump in the road toward continuing lower Arctic sea ice coverage.

It is not that the polar regions are amplifying the warming «going on» at lower latitudes, it is that any warming going on AT THE POLES is amplified through inherent positive feedback processes AT THE POLES, and specifically this is primarily the ice - albedo positive feedback process whereby more open water leads to more warming leads to more open water, etc. *** «Climate model simulations have shown that ice albedo feedbacks associated with variations in snow and sea - ice coverage are a key factor in positive feedback mechanisms which amplify climate change at high northern latitudes...»

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.

-- 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.

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 wintsea ice coverage in the Barents - Kara Sea during late fall and early wintSea during late fall and early winter.

For Antarctica, the lowest maximum extent, recorded on September 12, follows a record low minimum sea ice coverage recorded on March 1 after the summer thaw, he said.

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 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.

Also, take a lesson from the last glacial about the power of a few degrees temperature change on ice coverage, sea levels, etc..

This year, as has been true since 1979, that sea ice coverage is abundant across the Arctic for seals that are giving birth and mating at this time as well as for polar bears busy feeding on young seals and mating.

Finally, as Arctic sea ice coverage drops below 4 million k ^ 2, what affect will a nearly or totally ice - free Arctic Ocean have on troposphere dynamics?

The microwave imagers SSM / I and SSMIS on these DMSP satellites have provided the research community with extremely important CDRs, including sea ice coverage, water vapor, wind speed, rainfall, and cloud water.

During the summertime sea ice melt, after the surface snow has melted off, the albedo of melting ice is complicated by the presence of melt ponds and depends on the areal coverage and depth distribution of the melt ponds.

The point is that, objectively speaking, based on actual data, not model data or nursery stories, the total global sea ice coverage is currently above average.