Sentences with phrase «circulation patterns such»

These aspects of precipitation generally exhibit large natural variability, and El Niño and changes in atmospheric circulation patterns such as the North Atlantic Oscillation have a substantial influence.

It appears we agree on the inability of the global models to simulate the natural variations on decadal and, presumably longer time scales, of large scale circulation patterns such as ENSO, the PDO, the NAO etc..

We need to be cognizant of everything from local - scale stable boundary layer micrometeorolgy and ocean unstable boundary layer turbulent processes to global oceanic and atmospheric circulation patterns such as the Arctic Oscillation and the Gulf Stream's seasonal evolution.

Not exact matches

The timing of such uplift is important in helping scientists to understand how mountains form, how they erode and what impact this may have on global atmospheric circulation patterns and climate.

The researchers warn, however, that the future evolution of the AMO remains uncertain, with many factors potentially affecting how it interacts with atmospheric circulation patterns, such as Arctic sea ice loss, changes in solar radiation, volcanic eruptions and concentrations of greenhouse gases in the atmosphere.

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.

For example, in Earth atmospheric circulation (such as Hadley cells) transport heat between the warmer equatorial regions to the cool polar regions and this circulation pattern not only determines the temperature distribution, but also sets which regions on Earth are dry or rainy and how clouds form over the planet.

«Such concentrations are clear evidence of strong irregularities in Mars» high altitude winds and circulation patterns,» says NASA in a statement.

For example, reflecting sunlight would likely reduce the Earth's average temperature but could also change global circulation with potentially serious consequences such as changing storm tracks and precipitation patterns throughout the world.

The problem then is that in a warming climate, all other factors are not equal, such as wind shear and ocean circulation patterns.

Last year the circulation pattern was such that a large trough over the eastern US enhanced the path of cyclones into Florida.

Of course also in ice cores you might then have special problems for the respective years such as particular accumulation or very specific circulation patterns that somehow compensate for the general cooling.

Examples of such circulation patterns include the Pacific - North American pattern (PNA), the North Atlantic Oscillation (NAO) / Arctic Oscillation (AO), the East Atlantic (EA), the West Pacific (WP), and the tropical / Northern Hemisphere (TNH).

For the entire Northern Hemisphere, there is evidence of an increase in both storm frequency and intensity during the cold season since 1950,1 with storm tracks having shifted slightly towards the poles.2, 3 Extremely heavy snowstorms increased in number during the last century in northern and eastern parts of the United States, but have been less frequent since 2000.11,15 Total seasonal snowfall has generally decreased in southern and some western areas, 16 increased in the northern Great Plains and Great Lakes region, 16,17 and not changed in other areas, such as the Sierra Nevada, although snow is melting earlier in the year and more precipitation is falling as rain versus snow.18 Very snowy winters have generally been decreasing in frequency in most regions over the last 10 to 20 years, although the Northeast has been seeing a normal number of such winters.19 Heavier - than - normal snowfalls recently observed in the Midwest and Northeast U.S. in some years, with little snow in other years, are consistent with indications of increased blocking (a large scale pressure pattern with little or no movement) of the wintertime circulation of the Northern Hemisphere.5 However, conclusions about trends in blocking have been found to depend on the method of analysis, 6 so the assessment and attribution of trends in blocking remains an active research area.

Yet, we explained there is also reasonable basis for concern that a warming world may at least temporarily increase tornado damage including the fact that oceans are now warmer, and regional ocean circulation cycles such as La Nina / El Nino patterns in the Pacific which affect upper atmospheric conditions appear to becoming more chaotic under the influence of climate change.

In its discussion of specific examples, such as a catastrophic change in ocean circulation patterns, the report emphasizes predicted risks that the FAR concluded were minimal through the rest of the century.

But certainly models with such a grand name as «General Circulation Model», would include average diurnal atmospheric circulation patterns in tropics, and diurnal and seasonal patterns at latitudes outside the tropics, as well as heat transfer to the deCirculation Model», would include average diurnal atmospheric circulation patterns in tropics, and diurnal and seasonal patterns at latitudes outside the tropics, as well as heat transfer to the decirculation patterns in tropics, and diurnal and seasonal patterns at latitudes outside the tropics, as well as heat transfer to the deeper ocean.

External processes such as the increase in the concentration of greenhouse gases and variability due to volcanic eruptions are also important for driving variability in atmospheric circulation patterns.

«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.»

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.

This is not the case with extratropical volcanoes, such as the Chilean one, due to different circulation patterns in the stratosphere at those latitudes.

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.

All the problems that plague climate science, such as tree rings, ice cores, circulation patterns, and proxy data, among many others, were identified and researched.

A change in ocean heat content can also alter patterns of ocean circulation, which can have far - reaching effects on global climate conditions, including changes to the outcome and pattern of meteorological events such as tropical storms, and also temperatures in the northern Atlantic region, which are strongly influenced by currents that may be substantially reduced with CO2 increase in the atmosphere.

According to research published last week by Jennifer Francis of Rutgers University (Geophysical Research Letters, vol 39, L06801), the rapid warming in the Arctic is affecting atmospheric circulation further south, making weather patterns more persistent — more blocking, in other words — which makes some kinds of extreme weather, such as heatwaves, more likely.

They first sorted the data into regional patterns, and then compared the temporal behavior of these patterns to common historical climate indices — such as well - known patterns of atmospheric circulation, sea surface temperatures, or even large - scale warming.

Advance research on the interactions between arctic sea ice and global physical systems such snow cover extent, ocean and atmospheric circulation patterns, and mid-latitude effects.

Such a change could alter both ocean and atmospheric circulation patterns around the world.

Some of the circulation patterns are involved in the meridional energy flow, such as the Hadley cell and the Ferrel cell.

Many of these circulation patterns are thought to be driven by geographical features, such as the strong heating near the tropics nd over parts of the ocean basin, such as the Walker cell (see here).

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.

The disappearance of the polar ice cap could also affect global ocean circulation patterns, and its melting has already imperiled native species such as the polar bear.