how does global atmospheric circulation lead to areas of high and low pressure?
152379
Some of the air travels north and some south of the equator. ... Global atmospheric circulation creates winds across the planet as air moves from areas of high pressure to areas of low pressure. It also leads to areas of high rainfall, like the tropical rainforests, and areas of dry air, like deserts.
1178828
High in the atmosphere, air pressure decreases. With fewer air molecules above, there is less pressure from the weight of the air above. Pressure varies from day to day at the Earth's surface - the bottom of the atmosphere. ... A low pressure system has lower pressure at its center than the areas around it.
228512
What factors determine the global pattern of precipitation? The general circulation of the atmosphere; distribution of mountain ranges and high plateaus; temperature; passage of high and low pressure systems; proximity to semi-permanent highs and lows; proximity to large open water sources.
383413
As the pressure decreases, the amount of oxygen available to breathe also decreases. ... Atmospheric pressure is an indicator of weather. When a low-pressure system moves into an area, it usually leads to cloudiness, wind, and precipitation. High-pressure systems usually lead to fair, calm weather.
831154
['Four global pressure zones: high, low, high, low from poles to equator.', 'Three global wind belts: polar easterlies, westerlies, trade winds.', 'Pressure zones and wind belts shift north and south with the seasons.', 'Land and sea breezes, winter and summer monsoon.']
12614
The Intertropical Convergence Zone, or ITCZ, is the region that circles the Earth, near the equator, where the trade winds of the Northern and Southern Hemispheres come together. The intense sun and warm water of the equator heats the air in the ITCZ, raising its humidity and making it buoyant.
1176379
Atmospheric pressure is caused by the gravitational attraction of the planet on the atmospheric gases above the surface, and is a function of the mass of the planet, the radius of the surface, and the amount and composition of the gases and their vertical distribution in the atmosphere.
1304180
The primary reason that the atmosphere is deepest and thickest at the equator is because the air is, on average, warmer there than anywhere else on Earth. Warm air is less dense than cold air. And gravity exerts equal pressure worldwide, so atmospheric pressure is the same worldwide, weather systems aside.
152623
Air pressure has a direct influence on the sea level. High air pressure exerts a force on the surroundings and results in water movement. So high air pressure over a sea area corresponds to low sea level and conversely low air pressure (a depression) results in higher sea levels.
898582
World Distribution of Sea Level Pressure Along 30° N and 30° S are found the high-pressure areas known as the subtropical highs. Further pole wards along 60° N and 60° S, the low-pressure belts are termed as the sub polar lows. Near the poles the pressure is high and it is known as the polar high.
186167
On the earth's surface, there are seven pressure belts. They are the Equatorial Low, the two Subtropical highs, the two Subpolar lows, and the two Polar highs. ... Warm air being light, the air at the Equator rises, creating a low pressure. At the poles the cold heavy air causes high pressure to be created/formed.
739329
High pressure systems entail sinking air, while lows entail rising air. High pressure systems form where air converges in the higher levels of the atmosphere. ... In contrast, low pressure systems form where air near the ground converges. With no place else to go, it rises.
1145925
This movement of air is called global atmospheric circulation. Temperatures at the equator are high because incoming solar radiation is more intense as the sun's energy is more concentrated. Due to high temperatures at the equator, the air rises up into the atmosphere. ... As the air is sinking this creates high pressure.
1239641
Low-pressure systems generally produce high winds, warmer air, and atmospheric lift— ideal ingredients for a tropical storm. The lower the barometric pressure in hurricanes, the higher the wind speeds— and the more dangerous the storm.
419340
A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. ... A high pressure system has higher pressure at its center than the areas around it. Winds blow away from high pressure.
1297769
Sunlight Intensity Affects Global Winds, Precipitation Patterns, and Ocean Circulation Which Are All Components of Climate. At the equator, the Earth receives greater exposure to the sun's rays where both air and extensive bodies of water warm under the influence of the sun.
766966
The rising of warm, moist air from the ocean helps to power the storm. Two other factors may also be contributing to the rising intensities of hurricanes. First, warm air holds more water vapor than cold air—and the rising air temperatures since the 1970s have caused the atmospheric water vapor content to rise as well.