What are trade winds explain?
The trade winds are winds that reliably blow east to west just north and south of the equator. The winds help ships travel west, and they can also steer storms such as hurricanes, too.
What causes trade winds to weaken?
The easterly trade winds are driven by a surface pressure pattern of higher pressure in the eastern Pacific and lower pressure in the west. When this pressure gradient weakens, so do the trade winds. The weakened trade winds allow warmer water from the western Pacific to surge eastward, so the sea level flattens out.
Why are easterlies called trade winds?
Named from Old English Trade = path, because of their regular course, these winds are the tropical easterlies, northeast Trades in the Northern Hemisphere and southeast Trades in the Southern Hemisphere.
Why are trade winds so predictable?
Trade winds are the powerful prevailing winds that blow from the east across the tropics. Trade winds are generally very predictable. … Differences in air pressure over the ocean cause these storms to develop.
What are the main features of trade winds?
The main characteristics of the Trade winds are:
- The Trade winds blow in the tropics between the sub tropical high pressure belt to the equatorial low pressure belt between 30°N and 30°S.
- Trade winds are warm winds and hence they pick up moisture and bring heavy rainfall on the eastern sides of the tropical islands.
22 мая 2015 г.
What is another name for trade winds?
The trade winds or easterlies are the permanent east-to-west prevailing winds that flow in the Earth’s equatorial region (between 30°N and 30°S latitudes).
Are trade winds warm or cold?
The differences in pressure and temperature between the two sides of the Pacific are caused by the trade winds; air blowing from east to west pushes water, making the sea level higher in the western Pacific, and makes cold water rise toward the surface, making the eastern Pacific approximately 14 degrees F (7.7 degrees …12 мая 2020 г.
How does trade wind affect climate?
Trade winds have a big influence on the climate to the north and to the south of the equator. The main effects are: Continuous removal of humidity from the areas around the tropics = desertification. Continuous supply of humidity to the equator region = rain forest.
How does El Nino affect the trade winds?
During an El Niño event, the easterly trade winds converging across the equatorial Pacific weaken. This in turn slows the ocean current that draws surface water away from the western coast of South America and reduces the upwelling of cold, nutrient–rich water from the deeper ocean, flattening out the thermocline.
How are winds classified?
Winds are commonly classified by their spatial scale, their speed, the types of forces that cause them, the regions in which they occur, and their effect. … Short bursts of high speed wind are termed gusts. Strong winds of intermediate duration (around one minute) are termed squalls.
Why does wind change direction?
So the air flows from high-pressure areas to low-pressure areas. And the bigger the difference between these pressures… the faster the air will move. … The wind changes direction and speed based on how the low and high pressure move and the strength of each system.
How are winds named?
A wind is always named according to the direction from which it blows. For example, a wind blowing from west to east is a west wind. The ultimate cause of Earth’s winds is solar energy. … The greater the difference in pressure, the greater the force and the stronger the wind.
Do trade winds change direction?
The Coriolis Effect, in combination with an area of high pressure, causes the prevailing winds—the trade winds—to move from east to west on both sides of the equator across this 60-degree “belt.”
Why is wind so powerful?
These winds arise thanks to the big difference between low pressure and high pressure in the vicinity. This pressure gradient brings about the winds. The greater the pressure difference (from high to low) and the closer they are to each other, the stronger the winds will be.