Sentences with phrase «by circulation patterns»

Data collected by ship and model simulations suggest that increased Pacific Winter Water (PWW), driven by circulation patterns and retreating sea ice in the summer season, is primarily responsible for this OA expansion, according to Di Qi, the paper's lead author and a doctoral student of Liqi Chen, the lead PI in China.

The weather pattern over northern India, the Himalayas, and Pakistan is usually dominated by a circulation pattern that prevents mid-latitude weather systems from penetrating very far south.

They are being pushed out of the Arctic Ocean by a circulation pattern that starts over near Siberia; occasionally you'll see a Siberian tree washed ashore along this coast of Greenland.

The weather pattern over northern India, the Himalayas, and Pakistan is usually dominated by a circulation pattern that prevents mid-latitude weather systems from penetrating very far south.

Convection is characterized by a circulation pattern of rising and sinking air masses, and the atmospheric vertical volume transport takes place through cells of updraft and subsidence; however, these may not be coherent or stable in time and space.

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.

They range from changes in ocean circulation patterns caused by glacial meltwater entering the ocean to the cosmic - impact theory.

An unlucky atmospheric circulation pattern may have been made worse by poor farming practices.

Air naturally poor in ozone was, for example, lifted into the lower stratosphere above Britain from the sub-tropical Atlantic, by an unusual pattern of atmospheric circulation.

They will look for evidence of temperature changes caused by ocean circulation patterns in both the North Atlantic and tropical Pacific Oceans, which drive precipitation in Tibet as well as the Indian monsoons.

[Response: Well, something like a circulation changed forced by the NAO pattern (which may in turn be affected by greenhouse gases) might cause an increase in European air temperatures, which in turn would allow low level moisture to increase if there is enough moisture supply, which would then constitute an amplification of a signal driven remotely.

They help us to understand the global circulation of the atmosphere by explaining the mechanisms that drive some of the persistent or recurrent patterns (or features) of local weather and climate.

They also manifest as perturbations in the tropical weather induced by anomalous middle latitude circulation patterns (e.g., mid-latitude blocking anticyclone), such as cold surges or monsoon breaks.

«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.

The first collection of papers establishes that (a) decadal and multi-decadal ocean circulation patterns (AMO, PDO, NAO, ENSO) have significantly modulated precipitation and temperature changes in recent decades, and the second collection of papers confirm that (b) natural ocean oscillations are, in turn, modulated by solar activity.

However, we now know that climate change is already affecting regional circulation patterns and by extension helping to shape local extreme weather.

... [T] he significant correlations as well as similar atmospheric circulation patterns might provide empirical support for a solar influence on hydroclimate extremes in central Europe during spring and summer by the so - called solar top - down mechanism.

There is evidence that ocean circulation patterns are disrupted by glaciations.

Although most aerosols are carried up by the same atmospheric circulation patterns, their chemical and physical properties determine whether or not they become «cloud condensation nuclei,» which are the points around which droplets form before they become cloud droplets.

The program will address the role of artists, curators and other art professionals in an increasingly borderless world, investigating the ways in which artistic practices, curatorial strategies and critical commentary have been reconfigured by intensified patterns of global circulation.

The circulation patterns of the tropical Hadley Cell, the mid latitude storm tracks the polar high and the resulting climate zones are all driven by the gradients of solar heating as a function of latitude.

Atmospheric circulation patterns, specifically the predominant shape of the Jet Stream, controlled largely by orographic forcing of the Rocky Mountains, have more to do with keeping northern Europe warm than does the Gulf Stream or THC.

«As the Arctic sea - ice cover continues to disappear and the snow cover melts ever earlier over vast regions of Eurasia and North America, it is expected that large - scale circulation patterns throughout the northern hemisphere will become increasingly influenced by Arctic Amplification.»

Hank states,» That's a known reversing pattern — positive ACRI phase characterized by cyclonic ocean circulation and a warmer and wetter climate.»

There is so little understanding about how the ocean parses its response to forcings by 1) suppressing (local convective scale) deep water formation where excessive warming patterns are changed, 2) enhancing (local convective scale) deep water formation where the changed excessive warming patterns are co-located with increased evaporation and increased salinity, and 3) shifting favored deep water formation locations as a result of a) shifted patterns of enhanced warming, b) shifted patterns of enhanced salinity and c) shifted patterns of circulation which transport these enhanced ocean features to critically altered destinations.

The pattern in this map is remarkably similar to that expected from a slowdown in thermohaline circulation (see Levermann et al. 2005) so probably it is dominated by this effect.

Water temperature, «sea roughness», the changing patterns of oceanic circulation, and the use of carbon by marine creatures - all of these factors play up against one another.

«I think the minimum this year is more remarkable than in 2007,» said NSIDC scientist Julienne Stroeve in an email, «since the 2007 minimum was in large part driven by [unusual weather patterns], and this summer we shattered the 2007 minimum under more normal summer circulation patterns.»

«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.

Extratropical weather is frequently influenced by recurring circulation patterns, usually referred to as flow regimes or modes of variability.

In contrast to Trenberth's 2015 lament that atmospheric circulation patterns are not robustly simulated by CO2 - driven climate models, predicting storm tracks and blocking are the most critical factors for providing early warnings.

Francis, who wasn't involved with either study, is one of the main proponents of an idea that by altering how much heat the ocean lets out, sea ice melt and Arctic warming can also change atmospheric circulation patterns, in particular by making the jet stream form larger peaks, or highs, and troughs, or lows.

Even if it is assumed that 100 % of the recent global sea level rise is caused by anthropogenic sea level rise (an assumption that will be examined in Part II), local sea level rise can be dominated by ocean circulation patterns, land use practices and astronomical tides.

For example, the northern East Asian summer monsoon (NEASM) is, for the years of highest SST anomalies in the tropical eastern Pacific (TEP), affected by the Pacific - East Asian (PEA) teleconnection pattern, which consists of a wave creating an anomalously strong western North Pacific (WNP) anticyclonic circulation and anomalously strong cyclonic circulation in the NEASM region, creating more monsoon rainfall.

Three of these five intervals coincided with multidecadal hemispheric climate - regime shifts, which were characterized by a switch between distinct atmospheric and oceanic circulation patterns, a reversal of NHT trend, and by altered character of ENSO variability.

Patterns of ocean and atmosphere circulation shift in response to internal climate dynamics and at a rapid pace determined by the dynamics of the system rather than any external factor.

The change in total solar irradiance over recent 11 - year sunspot cycles amounts to < 0.1 %, but greater changes at ultraviolet wavelengths may have substantial impacts on stratospheric ozone concentrations, thereby altering both stratospheric and tropospheric circulation patterns... This model prediction is supported by paleoclimatic proxy reconstructions over the past millennium.

«A climate pattern may come in the form of a regular cycle, like the diurnal cycle or the seasonal cycle; a quasi periodic event, like El Niño; or a highly irregular event, such as a volcanic winter... A mode of variability is a climate pattern with identifiable characteristics, specific regional effects, and often oscillatory behavior... the mode of variability with the greatest effect on climates worldwide is the seasonal cycle, followed by El Niño - Southern Oscillation, followed by thermohaline circulation.»

By examining the spatial pattern of both types of climate variation, the scientists found that the anthropogenic global warming signal was relatively spatially uniform over the tropical oceans and thus would not have a large effect on the atmospheric circulation, whereas the PDO shift in the 1990s consisted of warming in the tropical west Pacific and cooling in the subtropical and east tropical Pacific, which would enhance the existing sea surface temperature difference and thus intensify the circulation.

Meier et al. (National Snow and Ice Data Center); 4.74 Million Square Kilometers; Statistical Prediction by Stroeve et al. shown in the June outlook remains unchanged since it was based on spring ice age fields and an average summer circulation pattern.

But matters are greatly complicated by atmospheric circulation patterns, cyclic changes in temperatures over the oceans, and the shapes of land masses.

And so a strong claim can be made that climate change is now at least partially responsible for all global weather although the part played by climate change could be small for any individual climate event relative to other causes such as normal ocean circulation patterns.

An expanding area of research since the SAR is the consideration of whether climate change may be realised as preferred modes of non-linear naturally occurring atmospheric circulation patterns, or so - called weather regimes as proposed by Palmer (1999).

The researchers suspect warmer temperatures in the tropical Pacific Ocean amplify warming at high elevations in the Arctic by changing air circulation patterns.

By something similar I mean all kind of quasistationary modes like circulation patterns that are formed, live for a considerable time and disappear or change form.

The Quaternary glacial history of the Arctic Ocean is characterized by the repeated build - up and decay of circum - Arctic ice sheets on the continental shelves, the development and disintegration of ice shelves, and related changes in ocean - circulation patterns and sea ice cover50, 51,52,53,54,55.

The anomalously warm and cold periods are probably caused by the variation of volcanic & solar activities, land use changes and perhaps the change of oceanic circulation pattern, but the contribution of each component is not well understood.

A hemispheric - scale circulation pattern defined by changes in the westerly winds at midlatitudes.

The climate models have gotten more complex, for sure, with thousands of estimated parameters for warming potential, vorticity, circulation patterns, absorption of heat, pressure, energy, and momentum by various layers or atmosphere, land, ocean, and sea - ice.