Sentences with phrase «pressure center»

As high - pressure air is sucked into the low - pressure center of the storm, wind speeds increase.

Warm conditions in the Kara Sea were consistent with low pressure centered over the Barents Sea, together with high pressure over Greenland that brought warm winds from the south.

«Processes that maintain Saturn's jets are basically the same processes that are responsible for the low and high and pressure centers in mid-latitudes on Earth,» said Del Genio.

However, unusually high sea level pressure centered over northern Scandinavia brought southerly winds from the East Siberian and Barents Seas, contributing to high air temperatures in these regions.

It already was known that that these stratospheric wind changes affect the North Atlantic Oscillation - a pattern of low atmospheric pressure centered over Greenland and high pressure over the Azores to the south.

When the polar scale of the northern pressure center of the NAO was identified in the late 1990s, the name Arctic Oscillation was introduced to highlight the fact that the pressure anomalies associated with the NAO span most of the Arctic.

This current funnels air upward into a controlled twister whose low - pressure center draws more air into the tower, turning turbines at its base.

As Sandy itself approached, atmospheric pressure (black lines) gradients from high - pressure areas around the storm to the low - pressure center cause water to rise under the storm, where the pressure is much lower.

When the PDO is in a positive (warm) phase, a low - pressure center called the Aleutian Low hovers over the state and relatively warm winter winds blow into Alaska from the southwest, according to the National Oceanic and Atmospheric Administration (NOAA).

For the vast majority of families in America, that pressure centers not on personal achievement or the bragging rights of a selective college but on affordability, access, and equal opportunity.

However, the main feature of the climate conditions for the month was a large area of below - average pressure centered over the Laptev Sea, and associated cooler than average conditions in the same area (1 to 4 degrees Celsius or 2 to 7 degrees Fahrenheit).

These are some of the basic forces at work when a low - pressure center forms in the atmosphere — a center that may turn into what people in the North Atlantic, North Pacific and Caribbean regions call a hurricane.

Next, the results of the two searches are compared and any SLP minima within a critical radius of 1440 km are joined by a segment, representing the path of the low pressure center during that 12 - hour period.

The atmospheric pattern that sent the Jet Stream south is colloquially known as a «blocking high» — a big pressure center stuck over the very northern Atlantic Ocean and southern Arctic Ocean.

Here we have instead track the position of each low pressure center within a series of gridded sea level pressure (SLP) fields.

This AD pattern quickly shifted in the second half of June 2012, however, and was replaced by a more typical low sea level pressure center over the Arctic Ocean.

Here we analyze a series of climate model experiments along with observational data to show that the recent warming trend in Atlantic sea surface temperature and the corresponding trans - basin displacements of the main atmospheric pressure centers were key drivers of the observed Walker circulation intensification, eastern Pacific cooling, North American rainfall trends and western Pacific sea - level rise.

Polar Vortex (PV)-- is a deep low - pressure center in the upper atmosphere that usually sits over the Pole during the winter months and is encircled or surrounded by a fast flowing ribbon or river of air.

An air mass circulating inward around a low - pressure center (counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere).

It's a low - pressure center, and typically during the winter months it resides up there.

What I want you to see in the images is how the model forecasts the storm (the low pressure center) to quickly intensifies once it hits the warm ocean water.

The negative AO phase is characterized by a high - pressure center anomaly over the entire Arctic basin or polar cap and low - pressure center anomalies in each ocean basin in the mid-latitudes.

The positive AO phase is characterized by a low - pressure center anomaly over the entire Arctic basin or polar cap (the region poleward of 60 ° N) and high - pressure center anomalies in each ocean basin in the mid-latitudes.

In the «Equinox» figure, the intertropical convergence zone (ITCZ) occurs at the equator where the Trade Winds converge creating a low - pressure center and updrafts (red arrows).

Midlatitude synoptic storms, associated with low pressure centers and warm and cold fronts, arise from horizontal temperature differences.

This AD pattern quickly shifted in the second half of June, however, and was replaced by a low sea level pressure center over the Pacific side of the Arctic Ocean (Figure 3b), opposing the transpolar sea ice drift.

If it takes the same amount of time for a parcel farther away from the low pressure center to go around the vortex as a parcel nearer the center, then the parcel farther away has to go faster because the distance it has to go is longer.

The Positive NAO index phase shows a stronger than usual subtropical high pressure center and a deeper than normal Icelandic low.

By setting this limit we avoid the possibility that the algorithm will misidentify secondary lows (which can form in the wake of extratropical cyclones) as a reversal of the primary low pressure center.

The 1440 km critical radius (the maximum we found to be reliable) represents the maximum distance a low pressure center may be displaced during any 12 - hour period and still be considered the same genetic system.

In addition, if at any time two segments on the same track were found to define an acute angle of less than 85 ° the low pressure centers are considered to represent separate storms.

Semipermanent lows in the Arctic include the Aleutian Low, a low - pressure center that experiences many cyclones and storms in the winter, and the Icelandic Low, a low - pressure center located near Iceland.

Blocking patterns are pretty much what they sound like: quasi-stable arrangement of high and low pressure centers that join forces to gum up the works of the atmosphere, freezing in place — and in some cases, amplifying — the weather du jour.