Sentences with phrase «sea ice field»

This is likely because we maximized the covariance between the sea ice field and the atmospheric circulation by restricting our time averaging to the seasonal mean and restricting our spatial domain to 0 ° — 180 ° W and 30 ° — 75 ° S. Inevitably, indices calculated from local data will explain more local variance than those based on remote data.

Over the sea ice field the observations include: sea ice freeboard height and hence sea ice thickness from radar altimetry; sea ice surface temperature and sea ice drift from respectively infrared radiometer and imaging spectrometer under cloud free conditions.

Sentinel - 1A / B operate a synthetic aperture radar (SAR) with advanced observation capabilities in all weather conditions over the ocean (wind, waves, and surface current) and sea ice field (sea ice deformation, lead fraction and sea ice drift).

However, record loss in 2012 compared to 2007 depended more on preconditioning with thinner and more mobile sea ice field (Parkinson and Comiso 2013, Zhang et al. 2013).

Compared to v1.0, intermittent bugs in the externally sourced sea ice fields (with corresponding implications for high latitude SST) have been corrected.

Not exact matches

A shutdown would cut short a key NASA field campaign to survey Arctic land and sea ice, and a larger project it is part of.

One «growing phenomenon in the Arctic [is] polar bears foraging on land as their primary habitat, sea ice, retreats,» Kintisch writes, which makes field work even more dangerous, and difficult, than it would be otherwise.

This expedition landed on the southwestern confines of the Ross Sea, and, by its explorations, showed that the great ice barrier is in reality the front of an enormous ice field or glacier, mainly floating on the surface of an extended bay or sea, and fed by glaciers coming down from the elevated land on the westerly side and probably also on the easteSea, and, by its explorations, showed that the great ice barrier is in reality the front of an enormous ice field or glacier, mainly floating on the surface of an extended bay or sea, and fed by glaciers coming down from the elevated land on the westerly side and probably also on the eastesea, and fed by glaciers coming down from the elevated land on the westerly side and probably also on the eastern.

Along with my fellow field assistant Keith Heyward, I was joining Marchant and his graduate student, Sean Mackay, flying 60 miles across the sea ice to the Dry Valleys, a series of valleys and ridges that lie roughly east to west and largely free of the ice that covers 98 percent of the continent.

«Hold on,» I imagine a reader asking, «human ecology, sea ice physics, dinosaur paleontology, history — is this guy a legitimate expert in any single field?»

NASA scientists prepare for an unprecedented look at the Red Planet's ancient seas and modern ice fields — key sites in the ongoing search for life.

Rising global temperatures, ice field and glacial melting and rising sea levels are among the climatic changes that could ultimately lead to the submergence of coastal areas that are home to 1.3 billion people today, according to the report, published online today by the journal Nature Climate Change.

Golden, a professor of mathematics at the University of Utah, studies the dynamics of sea ice, and he regularly goes out into the field to test his hypotheses.

«Based on the UN climate panel's report on sea level rise, supplemented with an expert elicitation about the melting of the ice sheets, for example, how fast the ice on Greenland and Antarctica will melt while considering the regional changes in the gravitational field and land uplift, we have calculated how much the sea will rise in Northern Europe,» explains Aslak Grinsted.

The melting of Greenland contributes to the global sea level, but the loss of mass also means that the ice sheet's own gravitational field weakens and thus does not attract the surrounding sea as strongly.

During winter, each pump would be capable of building an additional layer of sea ice up to 1 meter thick over an area of about 100,000 square meters, or about the size of 15 soccer fields, the researchers estimate in the January issue of Earth's Future.

Co-author Dr Ivan Haigh, lecturer in coastal oceanography at the University of Southampton and also based at NOCS, adds: «Historical observations show a rising sea level from about 1800 as sea water warmed up and melt water from glaciers and ice fields flowed into the oceans.

The articles contained in this collection remind us of an epoch when experts debated whether the North Pole was surrounded by an inland sea that could be sailed; a thick, smooth ice sheet that could be easily traversed by a sleigh; or — as proved to be the case, to the dismay of explorers and the fascination of scientists — devastatingly unstable stretches of open water within fields of shifting sea ice.

To understand sea - level change means understanding not only the transfer of land ice into the ocean, but also, for example, how the gravitational field of the Earth changes as inconceivably large water volumes shift around the planet.

Glaciology; ice sheet dynamics and sea level rise; ice — ocean interactions; geophysical field methods; satellite geodesy; spaceborne remote sensing

This year will also see the continuation of two major cryosphere airborne and field campaigns: Operation IceBridge, which has provided a multi-dimensional view of Greenland, Antarctica, and sea ice since 2009, and the JPL - managed Oceans Melting Greenland, which is focused on the interaction between ocean waters and Greenland's glaciers that terminate in the ocean.

Come December the lavender fields at Bridestowe Estate are transformed into a sea of purple, but even in winter the lines make for scenic photos (and the lavender ice cream is still on sale!)

Multi-panel paintings in oil and smaller paintings on canvas and aluminum formats explore the tundra fragmented into puddles and bits of ice with small cascades flowing over the rocks, reminders of accelerated seasonal changes melting ice fields and sea ice.

In probing the fast - changing ice sheets of Antarctica and Greenland, Gordon Hamilton of the University of Maine exemplified the qualities in the rare breed of scientists, engineers and field staff willing to go to extremes — literally — to help clarify the pace at which seas will rise as warming glacial ice melts.

Steven C. Amstrup, the federal biologist who led an analysis last year concluding that the world's polar bear population could shrink two thirds by 2050 under moderate projections for retreating summer sea ice, is once again in the field along Alaska's Arctic coast, studying this year's brood of cubs, yearlings and mothers.

But as a starting point, I'll propose now — and I'll change this if they disagree — the names of some leading scientists in this field who would NOT say there is sufficient evidence to conclude that human - caused global warming IS the main cause of increasing summer retreats of sea ice (although they would say there is strong likelihood that it will eventually dominate):

>... there are still ways of discovering the temperatures of past centuries,... tree rings... Core samples from drilling in ice fields... historical reconstruction... coral growth, isotope data from sea floor sediment, and insects, all of which point to a very warm climate in medieval times.

In the next 24 hours, I'll be posting fresh excerpts from an extended and fascinating discussion of ice patterns since 2007 involving some of the world's top ice researchers — both modelers and field scientists like those I accompanied in 2003 on their annual North Pole expedition undertaken to monitor the vital signs of the ocean beneath the drifting sea ice.

Researchers Flee Stranded Bear - Scientists from the Wildlife Conservation Society had their field research on ecological impacts of eroding Arctic coasts near Prudhoe Bay interrupted by a polar bear that was stuck ashore because the sea ice in that part of Alaska was far offshore.

The team, which Marc led and provided the logistical support for, deployed from Resolute to Nord Greenland before setting up a rustic field camp on the sea ice for six days, during which time we mechanically drilled the ice to measure thickness, measuring snow depth in a grid pattern along the flight lines as well as dragging instruments along the surface that produced the same measurements for comparison to the airborne data.

Zhang, 5.1 (+ / - 0.6), Modeling The seasonal prediction focuses not only on the total Arctic sea ice extent, but also on sea ice thickness field and ice edge location.

A threshold h applied on the (thickness Feb = Mar concentration Sept) field yields the predicted September extent after the regression with the past four years of sea ice extent observations.

The surface parameter fields are calculated at global scale, excluding sea ice areas.

The Greenland Ice Sheet and other arctic ice fields likely contributed no more than 4 m of the observed sea level rise, implying that there may also have been a contribution from AntarctiIce Sheet and other arctic ice fields likely contributed no more than 4 m of the observed sea level rise, implying that there may also have been a contribution from Antarctiice fields likely contributed no more than 4 m of the observed sea level rise, implying that there may also have been a contribution from Antarctica.

However, this contribution to sea - ice loss remains uncertain pending new field experiments that will provide estimates of upward AW heat fluxes.

The satellite image of the ice - covered fjord with Thule, Saunders Island, and Chamberlin Gletschers shows a richly texture field of sea ice.

Even when sea ice errors can be quantified, it is difficult to isolate their causes, which might arise from deficiencies in the representation of sea ice itself, but could also be due to flawed simulation of the atmospheric and oceanic fields at high latitudes that drive ice movement (see Sections 8.3.1, 8.3.2 and 11.3.8).

A classic case in point was the discovery that field observations of the loss of arctic sea ice showed that by 2007 it had advanced to a level predicted by the mean of models of that loss as occurring in the 2100s, while that mean was used as the consensus projection in AR4.

These highstands imply an ongoing and moderate, sub - mm / yr, sea - level fall in the far field of the Late Pleistocene ice cover that has long been linked to the process of glacial isostatic adjustment (GIA; Clark et al., 1978).

The trick is to navigate a ship through sea mile after sea mile of ice fields and shallow straits.

Field observations summarized in the contribution by Hutchings and discussed in this month's Regional Outlook indicate that starting ice thicknesses were comparable to last year in the Beaufort and Chukchi Seas, and that after getting off to a fast start, melt has slowed down considerably, resulting in below - normal melt rates.

Community - based observations and field data for the Bering Sea ice cover summarized in the Sea Ice for Walrus Outlook (SIWO) indicate that even though Bering Sea ice was extensive, it was thinner than in past decades and hence susceptible to rapid retreice cover summarized in the Sea Ice for Walrus Outlook (SIWO) indicate that even though Bering Sea ice was extensive, it was thinner than in past decades and hence susceptible to rapid retreIce for Walrus Outlook (SIWO) indicate that even though Bering Sea ice was extensive, it was thinner than in past decades and hence susceptible to rapid retreice was extensive, it was thinner than in past decades and hence susceptible to rapid retreat.

Despite its importance, ocean salinity in the Arctic has been poorly monitored because of the harsh environment and obstacles posed by sea ice, which impede field measurements.

HadISST is a unique combination of monthly globally - complete fields of SST and sea ice concentration on a 1 degree latitude - longitude grid from 1870 to date.

His presentation has some very interesting results on sea ice mass balance that are unpublished, which I didn't use, but I did include and some slides from Perovich's RS presentation illustrating some previously published field observations (labeled «courtesy of Don Perovich»).

The ensemble consists of seven members each of which uses a unique set of NCEP / NCAR atmospheric forcing fields from recent years, representing recent climate, such that ensemble member 1 uses 2005 NCEP / NCAR forcing, member 2 uses 2006 forcing..., and member 7 uses 2011 forcing... In addition, the recently available IceBridge and helicopter - based electromagnetic (HEM) ice thickness quicklook data are assimilated into the initial 12 - category sea ice thickness distribution fields in order to improve the initial conditions for the predictions.

Zhang and Lindsay, 5.1 (± 0.4), Modeling Our seasonal prediction focuses not only on the total Arctic sea ice extent and ice concentration field, but also on ice thickness field and ice edge location.

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.

Actually Fielding's use of that graph is quite informative of how denialist arguments are framed — the selected bit of a selected graph (and don't mention the fastest warming region on the planet being left out of that data set), or the complete passing over of short term variability vs longer term trends, or the other measures and indicators of climate change from ocean heat content and sea levels to changes in ice sheets and minimum sea ice levels, or the passing over of issues like lag time between emissions and effects on temperatures... etc..

For the 2009 SEARCH Sea Ice Outlook, regional perspectives on ice evolution during the summer had been solicited, both to synthesize relevant field observations and modeling activities and to encourage communication between different sea ice experts and user grouSea Ice Outlook, regional perspectives on ice evolution during the summer had been solicited, both to synthesize relevant field observations and modeling activities and to encourage communication between different sea ice experts and user grouIce Outlook, regional perspectives on ice evolution during the summer had been solicited, both to synthesize relevant field observations and modeling activities and to encourage communication between different sea ice experts and user grouice evolution during the summer had been solicited, both to synthesize relevant field observations and modeling activities and to encourage communication between different sea ice experts and user grousea ice experts and user grouice experts and user groups.