Sentences with phrase «with polar lows»

«We found out that that winter there was an unusually high number of high pressure systems over the Barents Sea combined with polar lows.

Not exact matches

Instead, species that immigrate from areas with higher water temperatures and lower oxygen concentrations will establish themselves and displace the native polar species,» says Hans - Otto Pörtner.

At odds with the low levels of factual knowledge, most respondents reported that they had a «moderate amount» or a «great deal» of understanding about climate change, where polar change has been a major area of interest.

* The late - summer polar ice cap, already at historic lows today, would shrink only another quarter and hold steady by century's end, instead of melting by more than three - quarters with no let - up in sight.

A low - altitude flow of warm, moist air from an ocean area combined with a flow of cold, dry polar air high up creates maximum instability, which means that parcels of air heated near the surface rise rapidly, creating powerful updrafts.

The paper draws a convincing connection between the intensification of the Amundsen Sea low - pressure system and increasing snow accumulation, said David Bromwich, a polar weather and climate scientist with the Byrd Polar and Climate Research Center at Ohio State University in Columbus, who was not an author on the new paper.

Here we address the high - pressure synthesis of a new polar and antiferromagnetic corundum derivative Mn2MnWO6, which adopts the Ni3TeO6 - type structure with low temperature first - order field - induced metamagnetic phase transitions (TN = 58 K) and high spontaneous polarization (~ 63.3 μC · cm − 2).

Coates et al. (2015) suggested that the presence of photoelectrons in the tail, together with low - energy ions, is possible evidence for a polar wind style escape at Venus, along the draped magnetic field around the planet.

The Foundation seeks partnerships with a broad range of stakeholders to implement its mission of supporting science in the polar regions, meeting the climate change and reaching a low carbon society.

1996 Porsche 993 Targa This stunning one - owner 1996 Porsche 993 Targa with a very low 38,370 miles on the odometer comes in its original color code # 92M polar silver with grey interior.

Available in CLA 180, CLA 200, CLA 250, CLA 220 CDI, they are versions of the respective CLA - class vehicles with choice of 5 body colours (mountain grey, cosmos black, night black, cirrus white or designo polar silver magno (expected to be available from the third quarter of 2013)-RRB-, AMG front and rear aprons, AMG side sill panels, black painted multi-spoke AMG light - alloy wheels, diamond radiator grille with black fin and chrome inserts, bi-xenon headlamps, lowered sports suspension, exclusive NEON ART interior, sports seats upholstered in leather and black microfibre DINAMICA with yellow stitching, instrument panel and the beltlines upholstered in ARTICO man - made leather with yellow stitching, trim elements in aluminium with a light longitudinal grain, a 3 - spoke multifunction sports steering wheel with a flattened bottom section and perforations in the grip area.

A traditional, low - slung sports coupe with a big V6 engine up front and the widest tires that Nissan could fit under the wheel arches out back, the Z is almost the polar opposite of the STI.

This data had been processed with additional low DU profiles as part of the calibration and showed clearly the long term trend down across the polar vortex:

[1] CO2 absorbs IR, is the main GHG, human emissions are increasing its concentration in the atmosphere, raising temperatures globally; the second GHG, water vapor, exists in equilibrium with water / ice, would precipitate out if not for the CO2, so acts as a feedback; since the oceans cover so much of the planet, water is a large positive feedback; melting snow and ice as the atmosphere warms decreases albedo, another positive feedback, biased toward the poles, which gives larger polar warming than the global average; decreasing the temperature gradient from the equator to the poles is reducing the driving forces for the jetstream; the jetstream's meanders are increasing in amplitude and slowing, just like the lower Missippi River where its driving gradient decreases; the larger slower meanders increase the amplitude and duration of blocking highs, increasing drought and extreme temperatures — and 30,000 + Europeans and 5,000 plus Russians die, and the US corn crop, Russian wheat crop, and Aussie wildland fire protection fails — or extreme rainfall floods the US, France, Pakistan, Thailand (driving up prices for disk drives — hows that for unexpected adverse impacts from AGW?)

The increased temperatures have been accompanied with changes in snow, sea - ice, precipitation, permafrost, icebergs, landice, river runoff, polar lows, synoptic storms, cloudiness, avalanches, ocean circulation, and ocean acidification.

And may I add looks remarkably similar to the idealized deformation of the polar vortex under scenarios with Arctic warming, low Arctic sea ice and increased Siberian snow cover presented in my recent review paper with Jennifer Francis [of Rutgers University].

The lower trend found by our study is consistent with the median projected sums of thermal expansion and glacier mass loss, implying that no net contribution from polar ice sheets is needed over 1901 - 1990.

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...»

R. Gates says: «This would imply some kind of causal linkage to the temperatures at lower latitudes with those at the pole in the process of polar amplification.

This would imply some kind of causal linkage to the temperatures at lower latitudes with those at the pole in the process of polar amplification.

The findings reinforce suggestions that strong positive ice — temperature feedbacks have emerged in the Arctic15, increasing the chances of further rapid warming and sea ice loss, and will probably affect polar ecosystems, ice - sheet mass balance and human activities in the Arctic...» *** This is the heart of polar amplification and has very little to do with your stated defintion of amplifying the effects of warming going on at lower latitudes.

Along with the negative AO index, we've seen an increased frequency of the the Arctic Dipole Anomaly, whereby the deep polar closed low that normally keeps the Arctic air contained is split into a pressure zones on both sides of the pole (i.e. a dipole) creating zonal winds across the Arctic shunt both cold air (and ice) more vigorously out of the Arctic.

Finds that in the Northern Hemisphere there is no reduction in the sensible heat transport despite the reduction in the zonal - mean temperature gradient at low levels associated with polar amplification of the warming

Offshore winds from Canada and Greenland (with temperatures around -20 C) carry across the warm waters of the Labrador Sea, creating a very unstable atmosphere and immediately leading to the formation of depressions (like polar lows).

If a model comes along with low frequency variability that is less polar concentrated and fits the century, or half - century, trend pattern better, that would be news.

In the year with strong wave energy, by contrast, the lower stratospheric warming in July and August leads to reduced ozone losses throughout the Southern Hemisphere spring, when the sunlight that powers ozone depletion chemistry returns to the polar regions.

It clearly involves surface pressure at the poles — it says so — and is concerned with NH blocking patterns involving the polar annular mode in a low solar UV environment.

If the record had been a tropical jungle or sea I'd have considered my hypothesis falsfied but so far every prediction made by it fits what has been observed with the sole exception of the Antarctic interior but that may be due to exceptional characteristics such as the strong polar vortex, ozone hole, and a temperature far lower than anywhere else on the planet.

The gyres spin up with negative polar annular modes — high pressure at the poles push circumpolar wind and storms into lower latitudes.

In fact, during January many parts of the continental U.S. were actually colder than Alaska as the lower - 48 were hit with the so - called «polar vortex.»

Because I was thinking that in the eastward and westward drift of the magnetic equator, might be some other drifts and a relaxing of polar fields with a trickle down effect during times of lower solar wind dynamic pressures.

With a great deal of polar warming going on (more so than lower latitudes) it would be the opinion of many that GISS is more accurate overall if you want to look at the whole surface of the planet.

In the south low pressure at the poles increases the strength of the circumpolar current through Drakes Passage and constrain storms to the polar region — with significant implications for Southern Hemisphere hydrology.

Despite differences in volcanic aerosol parameters employed, models computing the aerosol radiative effects interactively yield tropical and global mean lower - stratospheric warmings that are fairly consistent with each other and with observations (Ramachandran et al., 2000; Hansen et al., 2002; Yang and Schlesinger, 2002; Stenchikov et al., 2004; Ramaswamy et al., 2006b); however, there is a considerable range in the responses in the polar stratosphere and troposphere.

A well - known example of this is the melting of land - based ice, which is contributing to sea - level rise (and adding to the effects of thermal expansion of the oceans), with implications for low - lying areas far beyond the polar and mountain regions where the melting is taking place.

Taylor also debunked the notion that less sea ice means less polar bears by pointing out that southern regions of the bears» home with low levels of ice are seeing booming bear populations.

It is also because angle of incidence in the polar regions is so low compared with the other regions of the world.

Since to me (and many scientists, although some wanted a lot more corroborative evidence, which they've also gotten) it makes absolutely no sense to presume that the earth would just go about its merry way and keep the climate nice and relatively stable for us (though this rare actual climate scientist pseudo skeptic seems to think it would, based upon some non scientific belief — see second half of this piece), when the earth changes climate easily as it is, climate is ultimately an expression of energy, it is stabilized (right now) by the oceans and ice sheets, and increasing the number of long term thermal radiation / heat energy absorbing and re radiating molecules to levels not seen on earth in several million years would add an enormous influx of energy to the lower atmosphere earth system, which would mildly warm the air and increasingly transfer energy to the earth over time, which in turn would start to alter those stabilizing systems (and which, with increasing ocean energy retention and accelerating polar ice sheet melting at both ends of the globe, is exactly what we've been seeing) and start to reinforce the same process until a new stases would be reached well after the atmospheric levels of ghg has stabilized.

Thus, we come to a dead end: calculations of nucleation become impossible below Tlim with Boltzmann statistics although many cirrus clouds may form at these T (especially in the tropics), polar stratospheric clouds, playing important role in ozone depletion, noctilucent and mesospheric clouds form at even lower T. Vitaly Khvorostyanov

The survey, published in Polar Geography, shows that Tea Partiers — who call for minimal government intervention and are known for their climate scepticism — exhibit a high level of self - assessed understanding of climate science, combined with a low level of knowledge on polar facts.

A more frequent or more pronounced negative phase (as observed to a record extent during the very low solar minimum between cycles 23 and 24) is associated with a less active Sun due to warming of the polar stratosphere (more mesospheric ozone descending through the polar vortex).

The figures for November — month number 11 — have just come in and it looks like the U.S. is once again betraying the cause: November 2014 with its polar vortex saw almost 9000 record lows, ushering in a record extent of snow cover for North America.

That happened in January 2014, with the «polar vortex» plunging most of the eastern U.S. into record low temperatures.

As expected, amounts of precipitable water are greatest over warm, equatorial regions and decrease more or less continuously with increasing latitude down to very low values over the cold, polar regions.

Just so you don't get confused with using the right terminology: When sunspots are high, the solar polar magnetic field strengths are low.

By Paula Luu, Communications Manager January 24, 2014 While our weather - beaten friends in the Midwest and Northeast braced for near - record low temperatures and polar vortex snowstorms, Californians rang in the New Year with a rainless January.

With polar sea ice [not polar ice caps] for about 30 years we have been fairly accurately measuring it, and in arctic it has significantly decreased, 2007 and 2012 were lowest ice extent during summer.

If you get a lot of «incoming» it disrupts the polar vortex in the lower stratosphere, and you get a lot of mixing with warmer air.

Re # 5 As far as I understand it (drawing on my recollections of a lecture Hansen gave here at Yale a few weeks back), the actual net forcing associated with Milankovich cycles is relatively small, but it tends to trigger massive feedbacks (e.g. polar ice expanding, lowering albedo, cooling, expanding more) that «snowball» into a glacial period.

From satellite imagery, polar lows can look much like a hurricane, with a large spiral of clouds centered around an eye — for this reason they are sometimes called Arctic hurricanes.