Sentences with phrase «ice changes associated»

Over the last 24 years, the magnitude of the ice changes associated with the positive AO trend and the negative ENSO trend is much smaller than the regional ice trends.

While the polar bear is an Ice Age species, genetic and fossil evidence suggests it barely survived the profound sea ice changes associated with the Last Glacial Maximum, one of the most severe glacial periods of the Pleistocene.

Not exact matches

Changes in mass, rather than height, control how the ice shelves and associated glaciers flow into the ocean,» Paolo said.

Scripps graduate student Kristina Pistone and climate scientists Ian Eisenman and Veerabhadran Ramanathan used satellite measurements to calculate Arctic albedo changes associated with the changing sea ice cover.

The Science Team of the Canadian Research Icebreaker CCGS Amundsen has cancelled the first leg of the 2017 Expedition due to complications associated with the southward motion of hazardous Arctic sea ice, caused by climate change.

Results of the study show an increase in swimming associated with reduced ice, due to climate change.

Eric Post, a Penn State University professor of biology, and Jeffrey Kerby, a Penn State graduate student, have linked the melting of Arctic sea ice with changes in the timing of plant growth on land, which in turn is associated with lower production of calves by caribou in the area.

Beginning approximately 37,000 years ago, the bison began to decline, perhaps because of climate and habitat changes associated with the developing ice age.

Relevant to this issue, there is currently a debate among paleoclimatologists with respect to the following condundrum: A dramatic recession of the more - than - 11,000 year old ice cap of Mt. Kilimanjaro in tropical East Africa is taking place despite any clear evidence that temperatures have exceeded the melting threshold (one explanation is that the changes are largely associated with a drying atmosphere in the region; the most recent evidence, however, seems to indicate that melting may indeed now be underway).

Even if you ignore all the temperature meauserments which you seem to vehimently deny there is still many other sources of evidence associated with this increase such as — ice melt / extreme weather events / sea current changes / habitat changes / CO2 / ice cores / sediment cores.

Kwok, R., 2000: Recent changes of the Arctic Ocean sea ice motion associated with the North Atlantic Oscillation.

«The Greenland ice sheet as a whole is shrinking, melting and reducing in size as the result of globally changing air and ocean temperatures and associated changes in circulation patterns in both the ocean and atmosphere,» Muenchow said.

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.

He promoted the use of water stable isotopomers for reconstructing past climate changes from ice cores and with associated atmospheric modelling using both dynamically simple and General Circulation Models (GCMs).

Previously, Kelly was a Postdoctoral Fellow and Research Associate at the University of Washington and the University of Victoria in British Columbia, Canada where she studied the role of the changing Arctic sea ice cover on global circulation, weather, and climate using a hierarchy of numerical global climate models.

The latter is almost linearly related to changes in ice sheet volume; the former, however, is influenced by a range of factors, including atmosphere / ocean dynamics and changes in Earth's gravitational field, rotation, and crustal and the mantle deformation associated with the redistribution of mass between land ice and the ocean.

Here at Bakersfield Mitsubishi, we recognize the importance of annual car maintenance associated with the changing seasons — even if we hardly ever get any amount of snow and ice resembling a true winter storm.

[44] Factors limiting or threatening current population levels include ship strikes, entanglement in fishing gear, and changes in sea - ice coverage associated with climate change.

It is a fact of life for attribution studies that the climate changes associated with the end of the Little Ice Age overlap with the beginning of the era of industrial warming.

The cooling trend due to reduction of CO2 and changes in climate associated with changes in the geography eventually allowed Northern Hemisphere ice sheets to form, whereafter the strong amplification of Milankovic was possible.

Although the primary driver of glacial — interglacial cycles lies in the seasonal and latitudinal distribution of incoming solar energy driven by changes in the geometry of the Earth's orbit around the Sun («orbital forcing»), reconstructions and simulations together show that the full magnitude of glacial — interglacial temperature and ice volume changes can not be explained without accounting for changes in atmospheric CO2 content and the associated climate feedbacks.

It should also be clear that for any one locality, a shift in the storm tracks (associated with phenomena like the NAO or the sea ice edge) will often be more of an issue than the overall change in storm statistics.

Hopefully, this bodes well for sea ice survival this summer, but as you will likely see if you look in once in awhile, the surface conditions change remarkably during the summer, and from the appearance you may appreciate the associated changes in the fraction of solar heating absorbed by the ice.

Relevant to this issue, there is currently a debate among paleoclimatologists with respect to the following condundrum: A dramatic recession of the more - than - 11,000 year old ice cap of Mt. Kilimanjaro in tropical East Africa is taking place despite any clear evidence that temperatures have exceeded the melting threshold (one explanation is that the changes are largely associated with a drying atmosphere in the region; the most recent evidence, however, seems to indicate that melting may indeed now be underway).

If the surface temperature is slow to catch up to that imbalance then the energy imbalance remains large, and we can have sufficient net heating to cause much faster changes in the ice sheets than from the comparatively smaller imbalances caused by the changes in Earth's orbit associated with the glacial periods in the past.

Both are related to feedback mechanisms which can amplify or dampen initial changes, such as the connection between temperature and the albedo associated with sea - ice and snow.

As you might expect in a debate about whether or not the U.S. should make a risky move to perpetuate the use of fossil fuels, some committee members took the opportunity to voice doubt that the constant burning of that energy source was behind the rising temperatures, melting ice sheets, and abnormal weather events most scientists associate with climate change.

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...»

Significant changes in ice cover and the moisture balance were seen, consistent with the feedbacks believed to be associated with ocean heat transport changes.

«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...»

• Representation of climate processes in models, especially feedbacks associated with clouds, oceans, sea ice and vegetation, in order to improve projections of rates and regional patterns of climate change.

Retreating sea ice is associated with polar bear populations, which makes it another symbol for climate change.

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.

The majority of the winter warming is associated with changes in sea ice cover even though the sea ice declines at this time of the year are relatively small.

The notion of temperature fluctuation and associated manifestations such as sea level changes together with changes in sea ice and glaciers, needs to underpin any narrative about historic climate.

In particular, we separate the total predicted sea - level change into contributions associated with ice and meltwater loading effects, and, by doing so, isolate a second mechanism that contributes significantly to the ocean syphoning process.

The Arctic provides an early indicator of global climate change through feedback systems associated with factors such as the high albedo of snow and ice [Holland and Bitz, 2003].

«Since irradiance variations are apparently minimal, changes in the Earth's climate that seem to be associated with changes in the level of solar activity — the Maunder Minimum and the Little Ice age for example — would then seem to be due to terrestrial responses to more subtle changes in the Sun's spectrum of radiative output.

Our findings suggest that complex changes in sea ice and prey availability will interact to affect Svalbard polar bear feeding patterns and associated nutrition.

That suggests that the 1940s tropical warming could have started the changes in the Amundsen Sea ice shelves that are being observed now... He emphasized that natural variations in tropical sea - surface temperatures associated with the El Niño Southern Oscillation play a significant role.»

ii) ice - 605 cover associated sea - level - pressure changes that reorganize winds and thereby direction of freshwater and sea ice export between the Arctic Basin and marginal seas;

report that ocean sediment cores containing an «undisturbed history of the past» have been analyzed for variations in PP over timescales that include the Little Ice Age... they determined that during the LIA the ocean off Peru had «low PP, diatoms and fish,» but that «at the end of the LIA, this condition changed abruptly to the low subsurface oxygen, eutrophic upwelling ecosystem that today produces more fish than any region of the world's oceans... write that «in coastal environments, PP, diatoms and fish and their associated predators are predicted to decrease and the microbial food web to increase under global warming scenarios,» citing Ito et al..

Posted in Media and the Public, News and Reports, tagged arctic, associated press, china, climate change, drought, environment, floods, global warming, greenhouse effect, greenhouse gases, hanley, IPCC, journalism, media, moscow, pakistan, russia, schmidt, science, sea ice, wildfires on August 14, 2010 4 Comments»

Fischbach, A. S., S. C. Amstrup, and D. C. Douglas, 2007: Landward and eastward shift of Alaskan polar bear denning associated with recent sea ice changes.

«At medium sea levels, powerful forces − such as the dramatic acceleration of polar ice cap melting − are not necessary to result in abrupt climate shifts and associated drastic temperature changes.»

Perhaps because the image we associate most often with a changing climate is not the devastation left by a flood in our own state but rather a polar bear perched on a chunk of melting ice or an African farmer bearing silent witness to the impacts of a disaster that's taken place on the other side of the world.

ABSTRACT: Greenland ice - core records provide an exceptionally clear picture of many aspects of abrupt climate changes, and particularly of those associated with the Younger Dryas event, as reviewed here.

It was only after the warming in the NH and the associated changes to the ocean from the ice water melt affected the sea levels that the SH would have experience warming.

And Chris Fogwill, senior research associate at the Climate Change Research Centre at the University of New South Wales, Australia, who led the study, says: «The reason for the layering is that global warming in parts of Antarctica is causing land - based ice to melt, adding massive amounts of cool freshwater to the ocean surface.

Oh, I almost forgot topographic changes, though they a few orders of magnitude slower (not counting ice sheets and associated sea level here).