air mass

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  • noun

Words related to air mass

a large body of air with uniform characteristics horizontally

References in periodicals archive ?
The centre said: "It originates in the base of a storm cloud when two air masses with different temperatures, humidity and speed crash into each other forming a funnel that reaches the land.
"These air masses have entered Azerbaijan in winter months, more than ever before and the main reason for this is some climate change," said the deputy director.
Once the density current moves offshore, the wind speeds of the warm ([V.sub.w]) and cold ([V.sub.c]) air masses (with potential temperatures [[theta].sub.w] and [[theta].sub.c], resp.) influence the intensity and position of the possible precipitation.
Twisters are formed when warm, moist air masses meet with cool air, creating instability in the atmosphere.
Media reports that clashing air masses produce tornadoes mischaracterize the abundant new observational and modeling research on how tornadoes form.
Shanghai has been plagued by high levels of air pollution for several days after air masses carried industrial emissions from neighbouring Jiangsu and Zhejiang provinces.
Meteorological officer Philippos Tymvios yesterday said warm and humid air masses were to blame for the last four days of warm weather.
When water vapor condenses inside a thunderstorm, the heat that's released drives fast-rising air masses that can spawn tornadoes.
Because squall line thunderstorms are often triggered by weather fronts (boundary along which cold and warm air masses collide) rather than by the sun heating air at the earth's surface, the storms can happen any season, day or night.
Here, warm Kuroshio waters encounter cold, dry air masses coming from Asia, triggering intense air-sea heat exchanges that affect regional storms and climate and, indirectly, fisheries.
It is thought that the phenomenon takes place when two air masses meet.
The reported research deals with the investigation of children's conceptions about the movement of air masses in the troposphere, as this movement constitutes an important factor in the generation of the meteorological phenomena and the dispersion of air pollutants.
Greenhouse physics predicts that the driest air masses should respond first and most strongly to changes induced by human activities.