Sentences with phrase «as polar lows»

Not exact matches

These low - oxygen zones form naturally as colder waters that have absorbed oxygen in the polar regions sink and flow south.

But these low - oxygen waters near the equator are expanding, because the water in the polar regions is not as cold and is not absorbing as much oxygen as it used to be.

And polar - orbiting satellites are designed to cross the same spot at the same time each day, which is important for tracking changes in cloud cover — but over time, the satellites may drift in their orbits as they run low on fuel, arriving a bit later each day.

(Such low air temperatures encourage the formation of icy clouds in the upper atmosphere known as polar stratospheric clouds, which foster the chemical reactions that turn harmless chlorine compounds into ozone eradicators.)

But in temperate and polar regions, the boundary can be as low as 10 kilometers, Ridley says.

•» As a result of low gravity attraction in the region of equatorial bulge and high gravity attraction in the region of polar flattening, melt - water would not move from polar region to equatorial region.

The BRZ's entire engineering mission was a low center of gravity and low polar moment of inertia (meaning that as much as possible of the vehicle's mass is located inside the wheelbase and as low as possible.)

Providing a lightweight, high - strong and stiff structure to which the engine, transmission and double wishbone suspension are attached, the VH platform is designed to concentrate as much mass as possible within the wheelbase for perfect weight distribution, a low polar moment of inertia and a low centre of gravity.

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 number of polar lows and the frequency of fog over the Barents sea, however are believed to diminish as the sea ice cover retreats.

As for the effects of the changing polar jet stream on lower latitudes and possible detrimental effects is another topic, so much to do..

The strength of the Icelandic Low is the critical factor in determining path of the polar jet stream over the North Atlantic In the winter the IL is located at SW of Greenland (driver Subpolar Gyre), but in the summer the IL is to be found much further north (most likely driver the North Icelandic Jet, formed by complex physical interactions between warm and cold currents), which as graphs show had no major ups or downs.

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.

-LRB-- NAO) This sea ice then melts in the Sub Polar Atlantic, releasing fresh water into the sub - polar Atlantic waters, which in turn impedes the formation of NADW, which slows down the thermohaline circulation causing warm air not to be brought up from the lower latitudes as far north as previous while in lessening amounts.

At the same time that record heat is occurring in the polar regions and elsewhere, snow is forecasted (scheduled) to fall as far south as Chihuahua, Mexico (2017 also saw record low ice at BOTH poles).

The results could be catastrophic for polar people and animals, while low - lying lands as far away as Florida could be inundated by rising sea levels.

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.»

It's like arguing that because we hit in 2005 a low we expected as a new normal in 2060, polar bears should already be disappearing, but worse.

By convention, the high index polarity of the annular modes is defined as lower than normal pressures over the polar regions and westerly wind anomalies along ~ 55 - 60 degrees latitude.»

The changes in frequency of ENSO events and the multi-decadal PDO is related to more or less cold water entering the gryres as storms spin off the polar vortices more or less into lower latitudes.

This waste heat exhibits itself as anomalously high lower tropospheric temperatures in polar and temperate regions — and this raises global mean temperature.

As mounting evidence continues to turn against their prior polar bear predictions Harvey, Stirling, Amstrup, Mann and Lewandowsky's were running low on scientific ammunition.

The total failure of polar bear numbers to crash as predicted in response to the abrupt decline in summer sea ice in 2007 and persistent low summer sea ice levels since then (Crockford 2017), is vindication for Mitch Taylor.

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.

T0 can be taken as more or less constant near 255 K while P0 is latitude dependent near 400 mbar at the equator, and near the ground in the polar regions (as there there is very little water vapour and the optical thickness of the air on most of the thermal infrared spectrum is low).

«Globally, sea ice is at record lows as the polar regions warm faster than the rest of the planet.

Other references seem to demonstrate a higher surface trend as compared to lower troposphere trend over extra-tropical land, especially in arctic, due to polar amplification.

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).

It is also proposed that, over time, the changes at the higher mesospheric level dominate because the higher level effect gradually filters down to lower levels through the descending column of air within the polar vortices as described above.

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.

As the Earth's surface cools further, cold conditions spread to lower latitudes but polar surface water and the deep ocean can not become much colder, and thus the benthic foraminifera record a temperature change smaller than the global average surface temperature change [43].

In addition look for a equator ward shift of all the climatic zones as the polar vortex should weaken and expand due to very low solar activity.

Barents Sea polar bears almost certainly survived those previous low - ice periods, as they are doing today, by staying close to the Franz Josef Land Archipelago in the eastern half of the region where sea ice is more persistent.

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 perioAs 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 perioas 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.

«A reduction in mid-latitude synoptic variability might be expected as a result of the reduction in the equator - to - pole temperature gradient (polar vortex system) at low levels»

• Abundant prey and adequate sea ice in spring and early summer since 2007 appear to explain why global polar bear numbers have not declined, as might have been expected as a result of low summer sea ice levels.

The paper questioned whether climate change was dangerous for polar bears and whether the region was warming at all, even as NASA reported that the 2007 minimum sea ice levels were at an all - time low, falling to nearly 40 percent below the 1979 - 2000 average.

In contrast to the polar regions, the network of lower latitude small glaciers and ice caps, although making up only about four percent of the total land ice area or about 760,000 square kilometers, may have provided as much as 60 percent of the total glacier contribution to sea level change since 1990s (Meier et al. 2007).

A better question is does AGW slow the rate at which cold, dense, brines flow into the bottom of the oceans, and as a supplementary, is apparent warming due to the normal polar downwelling brines being less dense than normal and are being injected at 700 - 2000m rather than lower down.

• As far as is known, the record low extent of sea ice in March 2017 had no impact on polar bear health or survivaAs far as is known, the record low extent of sea ice in March 2017 had no impact on polar bear health or survivaas is known, the record low extent of sea ice in March 2017 had no impact on polar bear health or survival.

Lu's predictions for increased polar ozone loss in 2008/2009 as a function of the low solar activity (and therefore higher CR flux) did not come to pass.

Subarctic Climate Occurs mainly in Northern hemisphere south of Arctic Ocean Winters are long and bitterly cold; summers short and cool Below freezing half the year Tundra Climate Coastal areas along the Arctic Ocean Long, bitterly cold winters In some parts is permafrost, or permanently frozen layers of soil Ice Cap Climate North and South poles Temperature lows of more than - 120 F Snow and ice remain year - round, but little precipitation Highland Climate Found on mountains Includes polar climates plus others; several climates in one As you go up a mountain, temperatures drop and plant life grows sparser.

If the polar ice caps were actually melting, we would see an increase in the length of the day as the polar mass moved toward the oceans and lower latitudes.

And sea ice dwindled to record low levels in both the Arctic and Antarctic, with the north polar region warming twice as fast as the global average.

Tens of thousands of polar bears did not die as a result of more than a decade of low summer sea ice, for one simple reason: polar bears don't need sea ice in late summer / early fall as long as they are well - fed in the spring.

However, it appears that record - breaking sea ice levels in September 2007, the lowest to that date since 1979, had no discernible effect on Chukchi Sea polar bears, as confirmed by research up to 2016.

The launch was primarily designed to bring the PAZ satellite to orbit (which was deployed as planned into a low Earth, sun - synchronous polar orbit), a satellite for a Spanish customer that's designed to provide geocommunications and radar imaging for both government and private commercial customers.