Sentences with phrase «of air masses»

A front is the boundary between two different types of air mass.

In one study, a room that was smoke - free for two decades still had 29 percent of its air mass made from chemicals in third - hand smoke.

This is primarily a consequence of weather, controlled by the rising and sinking of air masses.

A front is a boundary between two different types of air masses, these are normally warm moist air masses from the tropics and cooler drier air masses from polar regions.

More meridonal jet stream tracks flowing around the world between the climate zones result in longer lines of air mass mixing at climate zone boundaries.

As a result of a weakening polar vortex, the movement of the air mass in the arctic begins to change.

This seesaw exchange of air masses shifts temperature conditions and storm patterns throughout the region.

The reactivity and degree of water affinity of fog CCN become potentially even more complex when taking into account back trajectories of air masses over industrial and urban landscapes.

The sulphate content of air masses that travelled over industrial emission sources before reaching South African grassland was many times that of air that had travelled over areas with no industrial emissions.

Further, the oxygen - 18 signal in precipitation integrates a history of the air mass travel and in some cases reflect nonlocal changes upwind of the site (see e.g., Lewis et al., 2010; Clim.

Further, the oxygen - 18 signal in precipitation integrates a history of the air mass travel and in some cases reflect nonlocal changes upwind of the site (see e.g., Lewis et al., 2010; Clim.

This allows a redistribution of air masses where cold air from the Arctic spills into the mid-latitudes and warm air from the subtropics is carried into the Arctic.

According to this system, all observable variation in atmospheric circulation is classified into three basic types by direction of the air mass transfer: Meridional (C); Western (W), and Eastern (E).

It was shown (Lamb 1972; Lambeck and Cazenave 1976), however, that the observable changes in speed and direction of the air mass transfer may explain seasonal and annual, but not multi-decadal, LOD variations.

The team combined this data with meteorological models of the temperatures, winds, and movement of air masses from the same time period, and then used a statistical method known as geostatistical inverse modeling to essentially run the model backward and determine the methane's origin.

It is a natural shift of air masses back and forth between the North Pole and mid-latitudes.

In reality, the ragged surface creates giant, rolling waves that ripple through the atmosphere, disrupting the orderly flow of air masses.

Daniel Rosenfield and his colleagues at the Hebrew University of Jerusalem studied satellite data of air masses over the Indian Ocean, which contain large numbers of air pollution particles blown off the surrounding continents.

Lightning also shows an affinity for the Himalayas, where mountains cause the convergence of air masses from the Indian Ocean and central Africa, which experiences thunderstorms year round.

Later I have seen what appears to be an indication of an increase of northern movement of the air mass what was dominated by the Walker circulation.

AIR MASSES A large body of air (thousands of miles) Changes in weather are caused by movements of air masses As an air mass moves away, temp & humidity.

This mixing of air masses also favors more storms and snow in the mid-latitudes.

NCEP and ERA reanalysis data are freely available on the internet, and could be used for checking whether the anomalies pointed out by Anthony had anything to do with anomalous advection of air masses.

Another single index of climate change is the Atmospheric Circulation Index (ACI) that characterizes the periods of relative dominance of either «zonal» or «meridional» transport of the air masses on the hemispheric scale.

At some times, we see a surplus of air mass and pressure over the pole and a deficit at around 45 ° N; at other times, the air mass is redistributed to create a deficit at the pole and a surplus in mid-latitudes.

The heating of air masses over tropical Asia in summer initiates a low - pressure system, which becomes the focal point of the trade winds of both hemispheres.

But Franklin said that in contrast to track forecasts, predicting storm intensity requires knowing lots of small - scale details that computer models have trouble capturing, from the dynamics of a storm's structure to the characteristics of air masses being pulled into a storm's circulation.

Again, the deviations of the air masses are the result of the Coriolis effect.

The outflow of air mass from the cell creates harmonic waves in the atmosphere known as Rossby waves.

When meridonal, the jet streams wander in loops further north and south, resulting in longer lines of air mass mixing at climate zone boundaries, which creates more clouds.

As you can see, there is little difference between the stations, the largest difference of a few ppmv is between the NH and the SH, as the ITCZ hinders the exchange of air masses between the hemispheres.

6) The main cloud bands move more poleward to regions where solar insolation is less intense and total global albedo declines via a reduction in global cloud cover due to shorter lines of air mass mixing.

The sulphate content of air masses that travelled over industrial emission sources before reaching South African grassland was many times that of air that had travelled over areas with no industrial emissions.

The jet streams are high - level rivers of fast moving air threading between the climate zones, and are driven by temperature, humidity and density differentials between the different types of air mass:

The study authors based their analysis on a combination of satellite observations of rainfall and vegetation and an atmospheric circulation model to track the movement of air masses.

Slides to teach the characteristics of tropical, polar, maritime and continental air Symbols to represent each of these air masses are included The lesson ends with a quick 4 mark multiple choice quiz to check for understanding This lesson is suitable for ages 13 to 18 and is a great introduction to air before monsoons, mid lattitude cyclones or fohn winds are taught.

It now appears clear that when the sun is active the jets are more zonal (east to west) with short lines of air mass mixing and less clouds whilst when the sun is less active the jets are more meridional (waving north and south) with longer lines of air mass mixing and more clouds.