Thus far, research has attributed much of the melting to
warmer air currents and reduced winter freezing.
With a wingspan of up to 3 metres / 10 feet, this regal bird uses
the warm air currents to float effortlessly through the canyon searching for food.
Lucky viewers may be able to spy them soaring
the warm air currents or roosting in the craggy rock faces of the island's cliffs.
One could say too much extra heat at the earth surface will greatly excite the hurricane safety valve (maybe too much, too often) but not enough heat will be jettisoned to the troposhere and will remain to melt glaciers,
warm air currents, disrupt preciptation patterns and, in general, muck up the system
Not exact matches
Each up -
current «feeds» upon the
warm and damp
air in its neighborhood and is thus in competition with and can suppress its neighbors.
Most of the
current discussion focuses on what can be done to reduce the rate of exhaustion of limited resources, the polluting of
air, water, and soil, and the rate of global
warming.
The swirling dislodged particles travel upward with the human convection plume, or
currents of
warmed air that rise around any human body, then get swept into a filter that takes out contaminants like dust, lint, and skin cells.
The large, bald - headed birds float on rising
currents of
warm air known as thermals, which they use to soar high into the sky without beating their wings, thereby saving energy.
Researchers say global
warming has produced stronger
air currents that allow the birds to spend less time away from their nests, increasing the odds that their chicks will survive.
There is a lot of water down there now, but given the fact that parts of the continent are getting cooler and parts are getting
warmers, plus the effects on
air currents, etc. this seems like an interesting question to answer.
Lynn, the increase of temperatures in the Arctic, is mainly the result of an inflow of
warmer air from lower latitudes (with the
current AO) and the change in albedo (mainly in summer).
Natural changes in winds,
air pressures and ocean
currents were found to be responsible for more than 80 percent of the observed
warming during the 112 years studied.
Current state - of - the - art climate models predict that increasing water vapor concentrations in
warmer air will amplify the greenhouse effect created by anthropogenic greenhouse gases while maintaining nearly constant relative humidity.
Warming air temperatures, melting ice, and shifting
currents are totally altering the ocean ecosystem, affecting the people, plants, and animals that call it home.
As we approached what is known as the Antarctic Boundary line where we crossed into Antarctic waters, the colder
air and water
currents from the south mixed with the
warmer currents of the north causing a thick hazy fog.
Real scientists (as opposed to climate modellers) have long maintained that the decline in Arctic ice is caused not by
warmer air — in the past year or two Arctic
air temperatures have actually been falling — but by shifts in major ocean
currents, pushing
warmer water up into the Arctic Circle.
By analogy, a
warmer world wouldn't be rainier (or cloudier); it's an imperfect analogy, because rain isn't absolutely correlated with cloudiness, and lateral transport of energy by ocean,
air, and latent heat
currents in and out of the E & W Pacific Ocean areas won't scale to global
warming
Other factors would include: — albedo shifts (both from ice > water, and from increased biological activity, and from edge melt revealing more land, and from more old dust coming to the surface...); — direct effect of CO2 on ice (the former weakens the latter); — increasing, and increasingly
warm, rain fall on ice; — «stuck» weather systems bringing more and more
warm tropical
air ever further toward the poles; — melting of sea ice shelf increasing mobility of glaciers; — sea water getting under parts of the ice sheets where the base is below sea level; — melt water lubricating the ice sheet base; — changes in ocean
currents -LRB-?)
Excerpt: Livermore CA (SPX) Nov 01, 2005 If humans continue to use fossil fuels in a business as usual manner for the next several centuries, the polar ice caps will be depleted, ocean sea levels will rise by seven meters and median
air temperatures will soar 14.5 degrees
warmer than
current day.
Still if
current human contributions have created almost a degree of
warming to date, that box might create about half a degree of
warming compared to a second box filled with
air, floor covered with the same pans of water.
As the area / volume ratio for the NH parts of the oceans is practically the same as for the SH, the surface heating (W / m2) must be larger in the NH parts, within the constraints of heat exchange via ocean and
air currents (and partly by the difference in
warming area in the tropics vs. the cooling areas in the higher latitudes)...
What is missed here, or omitted, is the fact of
warming being banked (saved up) in water and
currents which take longer to
warm and / or to cool than does
air.
Should the ice sheet start to melt in a serious way (i.e. much more significantly than
current indications suggest), then lowering of the elevation of the ice sheet will induce more melting simply because of the effect of the lapse rate (
air being
warmer closer to sea level due to pressure effects).
It also concludes that
current northern hemisphere surface
air temperatures are significantly higher than during the peak of the Medieval
Warm Period (MWP).
Contrary to popular belief, cleaner
air could actually make global
warming much worse than its
current state, two new studies revealed.
14 OCEAN
CURRENTS Cold and
warm streams of water move through oceans (based on earth's rotation, differences in water temperature, and change in
air pressure.
The wild exaggerations of both the direct CO2
warming and the supposedly more serious knock - on
warming are rooted in an untruth: the falsehood that scientists know enough about how clouds form, how thunderstorms work, how
air and ocean
currents flow, how ice sheets behave, how soot in the
air behaves.
Yes, the simple term «global
warming» doesn't convey all the complexities of what can happen as that
warming causes
air and ocean
currents to shift, but climate change / disruption provides even less information.
Either a big chunk of ice has been melting extraordinarily fast — which would cool the surrounding
air — or somehow ocean
currents would have changed in a way that favoured more rapid
warming of deep water.
Most interesting is that the about monthly variations correlate with the lunar phases (peak on full moon) The Helsinki Background measurements 1935 The first background measurements in history; sampling data in vertical profile every 50 - 100m up to 1,5 km; 364 ppm underthe clouds and above Haldane measurements at the Scottish coast 370 ppmCO2 in winds from the sea; 355 ppm in
air from the land Wattenberg measurements in the southern Atlantic ocean 1925-1927 310 sampling stations along the latitudes of the southern Atlantic oceans and parts of the northern; measuring all oceanographic data and CO2 in
air over the sea; high ocean outgassing crossing the
warm water
currents north (> ~ 360 ppm) Buchs measurements in the northern Atlantic ocean 1932 - 1936 sampling CO2 over sea surface in northern Atlantic Ocean up to the polar circle (Greenland, Iceland, Spitsbergen, Barents Sea); measuring also high CO2 near Spitsbergen (Spitsbergen
current, North Cape
current) 364 ppm and CO2 over sea crossing the Atlantic from Kopenhagen to Newyork and back (Brements on a swedish island Lundegards CO2 sampling on swedish island (Kattegatt) in summer from 1920 - 1926; rising CO2 concentration (+7 ppm) in the 20s; ~ 328 ppm yearly average
Of course, this
warm current warms the
air above it causing more evaporation and therefore more storms for the western U.S. creating heavy rains, flooding, and mudslides in California and more tornadoes in Florida.
A surface
current warms or cools the
air above it, influencing the climate of the land near the coast.
15 Surface
Currents A surface
current warms or cools the
air above it, influencing the climate of the land near the coast.
This is based on Schurer's 5th - 95th percentile range of
current warming relative to the late - 1800s, using the Cowtan and Way temperature record corrected for the difference between sea surface temperature and surface
air temperature
warming rates.
15 Heat Transport in the Biosphere The unequal heating of Earth's surface drives winds and ocean
currents transport heat throughout the biosphere Winds form because
warm air tends to rise and cool
air tends to sink
air that is heated near the equator rises
More clouds both drastically reduce energy input from the sun and simply slow release of what energy there is trapped in the lower troposphere, but the long term effect would be a fall in average temperature because of the significantly reduced input power but the atmosphere's ability to cool is aided by
air current circulation whereby the
warmer air rises above those low clouds and that infra - red is more easily re-emitted into space, whereby the low clouds now block that re-emission from hitting the ground again to any significant degree.
A new study on ice loss in Antarctica by the British Antarctic Survey confirms what we already know about the effects of global
warming but it differentiates between the effects of ocean
currents, their cause and the
air temperature effects at the ice surface.
Confirming what we already know about the effects of global
warming, it also differentiates between the effects of
currents, their cause and the
air temperature effects at the ice surface.
Current global average surface
air temperature is
warmer than that for all but a small fraction of the past 11,300 years.
And since the temperature difference between the Arctic and the tropics is narrowing, and since it's the temperature difference that drives wind and ocean
currents, then the jet stream that normally whizzes around the Arctic circle — thus keeping frozen
air in one place and separating it from the
warm breezes of the south — is, the theory goes, slowing, thus allowing
warm moist
air to penetrate into the north.
The subsiding
air warms by compression and, coupled with cooling of the lowest layers overlying the cold ocean
currents normally found off the west coasts of the continents, forms a pronounced temperature inversion (
warm air over cold), called the trade - wind inversion.
When the low shifts as far south as Newfoundland, a high develops over northern Greenland; this brings cold arctic
air west from northern Europe to be
warmed by the Norwegian
Current and thus
warm Greenland and North America rather than Europe.
The
warmed surface radiates as a blackbody, and also loses heat through rising in
air currents or evaporated moisture.
Loss of glacial volume in Alaska and neighboring British Columbia, Canada, currently contributes 20 % to 30 % as much surplus freshwater to the oceans as does the Greenland Ice Sheet — about 40 to 70 gigatons per year, 66,78,63,57,64,58 comparable to 10 % of the annual discharge of the Mississippi River.79 Glaciers continue to respond to climate
warming for years to decades after
warming ceases, so ice loss is expected to continue, even if
air temperatures were to remain at
current levels.
China Post: Flights will become bumpier as global
warming destabilizes
air currents at altitudes used by commercial airliners, climate scientists warned Monday.
It is responsible for moving
warm ocean
currents and
air into the Arctic, and from what I have read, that
warming can move ice out of the Arctic Ocean.
Scott Covert (10:38:42): «I can see how swirling winds and sea
currents might isolate Antarctica from
warm water and
air, aresols, soot etc... but how does it stop AGW caused by CO2?
Some scientists have also attributed
warmer air temperatures in the North Atlantic region to the delivery of
warmer seawater (heated by solar radiation unimpeded by volcanic aerosols) by the Gulf Stream and other
currents.
Also, it may be that a change in the
air currents caused by global
warming represents a fundamental yet poorly understood shift in climate patterns.
Shifts in clouds, water vapor, and the great
currents in the ocean and
air, however, cause complex responses in which some regions
warm more than the average while others
warm less than average, or even cool.