Not exact matches
The Tibetan Plateau
in China experiences the strongest monsoon system on Earth, with powerful
winds — and accompanying intense rains
in the summer months — caused by a complex system of global air
circulation patterns and differences
in surface temperatures between land and oceans.
«We think, but have not yet been able to establish, that this is connected to independently observed poleward expansion of the Hadley
circulation,» Emanuel says, referring to a large - scale
pattern of global
winds, which
in recent years has also moved further poleward.
The UM Rosenstiel School researchers used historical observations of cloud cover as a proxy for
wind velocity
in climate models to analyze the Walker
circulation, the atmospheric air flow and heat distribution
in the tropic Pacific region that affects
patterns of tropical rainfall.
«Wave
patterns in the images, revealed by UV absorption from ozone concentrations, are critical to understanding the
wind patterns, giving scientists an additional means to study the chemistry and global
circulation of the atmosphere,» writes NASA.
«Such concentrations are clear evidence of strong irregularities
in Mars» high altitude
winds and
circulation patterns,» says NASA
in a statement.
The problem then is that
in a warming climate, all other factors are not equal, such as
wind shear and ocean
circulation patterns.
Since the Eastern Tropical Pacific is not entirely decoupled from West
Wind Drift given the general
pattern of
circulation in the SE Pacific, the question arises is the magnitude of the observed overall energy difference
in the recently observed «extended» La Nina phase of ENSO condition relative to the the «more normal» ENSO comparable
in magnitude to energy associated with the apparent increase
in winds and potentially currents around the Antarctic?
«We think the recent snowy winters could be caused by the retreating Arctic ice altering atmospheric
circulation patterns by weakening westerly
winds, increasing the amplitude of the jet stream and increasing the amount of moisture
in the atmosphere,»
In 1735 George Hadley used the
wind patterns, recorded by English sailing ships, to create the first 3D diagram of
circulation.
It was determined that a major cause of changes
in the size and extent of the Antarctic ozone hole are the intense
wind patterns and
circulations associated with the extensive Antarctic high - pressure zone and the surrounding
wind pattern known as the Circumpolar Vortex.
Two
wind patterns in the Indian Ocean, known as the Hadley
circulation and the Walker
circulation, interact with the Indo - Pacific warm pool to drive sea level changes.
A hemispheric - scale
circulation pattern defined by changes
in the westerly
winds at midlatitudes.
The
circulation pattern described above — ascent
in the equatorial trough, poleward movement
in the upper troposphere, descent
in the subtropical ridges, and equatorward movement
in the trade
winds — is
in effect a direct heat engine, which meteorologists call the Hadley cell.
That would change the air
circulation patterns resulting
in the observed
wind effect on the ocean surfaces but would itself have been caused by changes
in the rate of release or absorption of energy from the ocean surfaces.
Some respondents note that atmospheric
circulation played a role
in 2007, but that it is not probable that such an unusual
wind pattern will repeat itself
in 2008.
General
circulation model calculations show extra heating
in summer warms the stratosphere, strengthening easterly
winds and changing
wind patterns.
Vector
wind analyses were computed to explain the composite seasonal precipitation anomaly results
in terms of different
circulation patterns associated with these two wet groups.
The dominant ice - determining factors of the Arctic have shifted several ways, from the dominance of
winds around 2000, to new
patterns of cracking, to 70 % drop
in volume
in a quarter century, to new
circulations.
The more traditional candidates included changes
in ice and snow cover, ocean currents, or the
pattern of
wind circulation and storms.
In case you're curious about El Nino / La Nina: El Nino involves the weakening of the Walker
Circulation, an equatorial atmospheric
wind pattern.
circulation patterns, suggesting it was (as I recall) significant, and then went on to describe... potential purposeful alteration of synoptic scale weather
in Europe by manipulation of a hypothetical
wind power plant
in the U.S..
This
in turn helps explain how factors such as fresh water from melting ice or changes
in global
wind patterns might lead to large - scale changes
in ocean
circulation or climate
in the future.
Recent records of wintertime extents (
in 2012, 2013, and 2014) appear to be associated with
patterns in air
circulation related to the westerly
wind regime.
Reichler and colleagues used weather observations and 4,000 years worth of supercomputer simulations of weather to show a surprising association between decade - scale, periodic changes
in stratospheric
wind patterns known as the polar vortex, and similar rhythmic changes
in deep - sea
circulation patterns.
A University of Utah study suggests something amazing: Periodic changes
in winds 15 to 30 miles high
in the stratosphere influence the seas by striking a vulnerable «Achilles heel»
in the North Atlantic and changing mile - deep ocean
circulation patterns, which
in turn affect Earth's climate.