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The flow of air reverses as the sun is going down and at night. This is because the mountain slopes at higher elevations cool quicker than the valleys. The cooler and denser air at higher elevations flows back down the slopes of the mountain and into the valley. This is called a mountain breeze.
Why does air flow from mountains down into valleys? Because cold air is dense. It flows downhill into the valley at night. … The Coriolis effect causes direction of winds and ocean currents to be deflected.
A valley breeze (which blows fromthe valley up the mountain) will tend to produce clouds because of orographiclifting and adiabatic cooling. A mountain breeze, which blows downhill, willnot produce clouds because it will result in compression and adiabatic warming.
The leeward—or “lee”—side is the one sheltered from the wind by the reference point. Windward and leeward aren’t frivolous terms. When applied to mountains, they are important factors in weather and climate—one is responsible for enhancing precipitation in the vicinity of mountain ranges, while the other withholds it.
Temperature differences between mountains and valleys create mountain and valley breezes. During the day, air on mountain slopes is heated more than air at the same elevation over an adjacent valley. As the day progresses, warm air rises and draws the cool air up from the valley, creating a valley breeze.
Mountain winds blow from mountain towards valley after sunset, when mountain cools down and valley zone is comparatively warmer. While valley breezes occur when the warm air rises up the sides of the valley, warm air in a mountain breeze will rise up the middle.
As the temperature of the land surfaces cools, the warm air rises and creates a small area of high pressure near the land surface. Since winds blow from areas of high pressure to areas of low pressure, the net movement of air (wind) is from the shore to the sea.
Mountains make a barrier for moving air. The wind pushes air, and clouds in the air, up the mountain slopes. … Dense masses of warm, moist air that move up and over a mountain swell as the air pressure confining them drops away.
chinook wind. A warm, dry wind that blows down the eastern slopes of the Rocky Mountains of the United States. It is akin to a Foehn wind and approaches the Rocky Mountains from the Pacific Ocean. As it climbs the mountain, the air begins to expand and cool.
Downslope Winds occur when warm/dry air descends rapidly down a mountain side. These are common on the east side of the Rocky Mountains, called Chinook Winds. These winds can blow over 40 mph, and can occur in sudden gusts that are even stronger, which can make driving hazardous.
Definition of mountain wind : a breeze of diurnal period depending on the unevenness of land surfaces and blowing down the slope by night. — called also mountain breeze.
1) The flow of air reverses as the sun is going down and at night. This is because the mountain slopes at higher elevations cool quicker than the valleys. The cooler and denser air at higher elevations flows back down the slopes of the mountain and into the valley. This is called a mountain breeze.
Mountain breezes occur at night, when cool, dense air flows from the mountainside into the valley. … At night, the land cools down faster than water does. The cooler air over the land moves toward the water as the warmer air over the water rises.
Heat | Short/Long Answer Questions Land breeze: blowing breeze from land towards the sea is called a land breeze. … Air from land being at higher pressure. So air from land starts blowing towards the sea and gives rise to a land breeze. Sea breeze: blowing breeze from sea towards land during the day is called sea breeze.
An island’s windward side faces the prevailing, or trade, winds, whereas the island’s leeward side faces away from the wind, sheltered from prevailing winds by hills and mountains.
The windward side of a mountain faces the wind while the leeward side faces away from the prevailing wind. windward side – The side of a mountain, ridge, or other flow obstacle facing toward the direction of the large-scale.
The leeward side is the left side and windward is the right side. The leeward side of the boat is the side opposite the wind. The direction to which the wind is going. The wind first hits the boat on the windward side ( the direction from which the wind is coming) crossing the boat to the leeward side.
As warm air rises near the Equator, for instance, it flows toward the poles. In the Northern Hemisphere, these warm air currents are deflected to the right (east) as they move northward. … As the current descends, it gradually moves from the northeast to the southwest, back toward the Equator.
In the Northern Hemisphere, or areas of the Earth located north of the equator, a low-pressure system’s converging winds rotate counterclockwise—or the same direction as the planet.
It is windy high up in the atmosphere as the effect of gravity is reduced and cooler because air temperatures decrease as you get closer to the poles. Therefore gale force winds are stronger and more common at the top of mountains than at sea level.
The air above the sea has a relatively higher pressure, causing air near the coast to flow towards the lower pressure over land. The strength of the sea breeze is directly proportional to the temperature difference between the land and the sea.
Why do land breezes occur at night? Land cools off slower than water, so the air above water is cooler. Water cools off faster than land, so the air above land is warmer. Land heats up slower than water, so the air stays cooler during the day.
That means the air over the water is warmer, less dense, and begins to rise. Low pressure is created over the water. Cold and dense air over the land begins to move to the water surface to replace the warmer rising air. The cool breeze from the land is called a land breeze.
Mountains and Precipitation As winds rise up the windward side of a mountain range, the air cools and precipitation falls. On the other side of the range, the leeward side, the air is dry, and it sinks.
Such mountains can block or channel various air masses or, in the event that air masses do in fact cross the mountains, it is very likely that the weather such an air mass would create would be very different in terms of its temperature and humidity characteristics. … Mountains also have a similar wind.
description and cause …of such winds, known as mountain winds or breezes, is induced by differential heating or cooling along mountain slopes. During the day, solar heating of the sunlit slopes causes the overlying air to move upslope. These winds are also called anabatic flow.
Winds from the south and southeast mainly occur in summer and these bring warm, dry weather. However, southerly winds can sometimes bring hot, thundery weather.
The wind off of the Rocky Mountains in North America is a foehn wind that is called a Chinook wind. The wind is a warm, dry wind that blows down the eastern slope of most mountains. … Foehn winds are formed from warmer and drier air that flows from aloft or above. This wind has the same force of some hurricane winds.
The Chinook is named after the Chinook Indians who lived along the Columbia River, and who were the first people to tell stories of “The Great South Wind”, or, in their language, the “Snow Eater”.
The wind blowing from land towards the sea is Land breeze. The wind blowing from the sea towards the land is Sea breeze. It occurs during the nights or early mornings.
Typically, during the day, San Diego’s winds blow from the ocean to the shore. These onshore winds tend to carry a lot of water vapor. However, Santa Ana winds blow the opposite direction, from the east to the west, and they have all the ingredients fires need to spread.
Chinook winds (or Foehn winds) develop when air is forced up over a mountain range. … If precipitation falls as the air rises over the mountains, the air will be dry as it sinks on the leeward size. This dry, sinking air causes a rainshadow effect (Figure below), which creates many of the world’s deserts.