Regional Gliding School Winds within a high Winds

Regional Gliding School

Winds within a high Winds blow clockwise and outwards. Regional Gliding School H

Area of Divergence A flow of air outwards from a region and is associated with highs. Sinking air compensates for the flow of air outwards. Regional Gliding School

Winds within a low Winds blow counterclockwise and inwards. L Regional Gliding School

Area of Convergence The flow of air into an area of low pressure is accompanied by rising air allowing the excess accumulation to escape. Regional Gliding School

Land Breeze • Blows at night • Land becomes cooler faster than water causing a high over the land • Wind blows from the land (high pressure area) towards the water (low pressure area) Regional Gliding School

Land Breeze Warm Sea causes Low Pressure over the sea. L Wind blows from Regional Gliding School Cool land causes High Pressure over the land high to a low H

Sea Breeze • Occurs during the day • Land heats faster than water causing a low over the land • Wind blows from the sea (high pressure area) towards the land (low pressure area) Regional Gliding School

Sea Breeze Warm Land causes Low Pressure over the land L Regional Gliding School Wind blows from Cool Sea causes High Pressure over the sea high to a low H

Confirmation Stage NOTE: You must use the buttons in the Confirmation Stage Regional Gliding School

Meteorology Winds Let's try a few review questions on Meteorology: Question #1 - Match A flow of air outwards from a region and is associated with highs. Sinking air compensates for the flow of air outwards. The flow of air into an area and is accompanied by rising air to permit the excess accumulation to escape. Regional Gliding School A Area of divergence B Area of convergence

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Flying Scholarship Program I’m afraid that answer is incorrect Let's try again. . . Regional Gliding School

Flying Scholarship Program That answer is correct. Let's move on. . . Try other match Regional Gliding School

Flying Scholarship Program That answer is correct. Let's move on. . . Try other match Regional Gliding School

Meteorology Winds Let's try a few review questions on Meteorology: Question #2 - Regional Gliding School At night land cools faster then water forming a higher pressure area. The result is wind blowing from the land to the sea. This is known as. A Land breeze B Sea breeze C Wind shear D Jet stream

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Flying Scholarship Program I’m afraid that answer is incorrect Let's try again. . . Regional Gliding School

Flying Scholarship Program I’m afraid that answer is incorrect Let's try again. . . Regional Gliding School

Flying Scholarship Program That answer is correct. Let's move on. . . Regional Gliding School

Diurnal Variations • Daily variation of the wind • Caused by surface heating during the day • Causes turbulence in lower levels which transfers the stronger upper level winds to the surface • This causes surface winds to veer an increase during the day • Surface winds back and decrease during the evening when daytime heating stops. Regional Gliding School

A rapid and brief increase in the wind speed. It is often associated with rapid fluctuations in the wind direction. Regional Gliding School

SPEED (KNOTS) GUSTS 30 25 Rapid peaks and lulls in the wind speed 20 15 10 5 TIME Regional Gliding School

Similar to a gust but of longer duration. Caused by the passage of a fast moving cold front or a thunderstorm. Regional Gliding School

SQUALLS SPEED (KNOTS) AT LEAST TWO MINUTES 30 25 20 15 10 5 SUDDEN INCREASE LASTING FOR AT LEAST TWO MINUTES TIME Regional Gliding School

Mechanical Turbulence Friction between the air and surface features of the earth is responsible for the swirling vortices of air called “eddies”. Regional Gliding School

Tornadoes Violent, circular whirlpools of air associated with severe thunderstorms and are very deep concentrated lows. Regional Gliding School

Veering and Backing • Veer – the wind changes direction clockwise – wind veers and increase as altitude increases • e. g. 270° to 300 ° – wind veers and increases during the day • Back – the wind changes direction counter-clockwise – wind backs and decreases as altitude decreases • e. g. 90° to 60° – wind backs and decreases at night Regional Gliding School

Wind Shear Sudden “tearing” or “shearing” change in wind speed or direction. Can be very violent. Jet Stream Narrow bands of exceeding high speed winds known to exist in higher levels of the troposphere at altitudes ranging from 20, 00040, 000 feet. Wind speed is usually 100 -125 knots but may get as high as 250 knots. Regional Gliding School

NOTE: You must use the buttons in the Confirmation Stage Regional Gliding School

Meteorology Winds Let's try a few review questions on Meteorology: Question #3 - Regional Gliding School What is a rapid and brief increase in the wind speed? A Squall B Gust C Wind shear D Jet stream

Flying Scholarship Program I’m afraid that answer is incorrect Let's try again. . . Regional Gliding School

Flying Scholarship Program I’m afraid that answer is incorrect Let's try again. . . Regional Gliding School

Flying Scholarship Program I’m afraid that answer is incorrect Let's try again. . . Regional Gliding School

Flying Scholarship Program That answer is correct. Let's move on. . . Regional Gliding School

Meteorology Winds Let's try a few review questions on Meteorology: Question #4 - Regional Gliding School When happens to the wind as an aircraft ascends? A Veer and increase B Veer and decrease C Back and increase D Back and decrease

Flying Scholarship Program I’m afraid that answer is incorrect Let's try again. . . Regional Gliding School

Flying Scholarship Program I’m afraid that answer is incorrect Let's try again. . . Regional Gliding School

Flying Scholarship Program I’m afraid that answer is incorrect Let's try again. . . Regional Gliding School

Flying Scholarship Program That answer is correct. Let's move on. . . Regional Gliding School

Meteorology Winds Congratulations!! You have now completed the Winds lesson of the Meteorology Module. Of course, this lesson is always available to you for future reference if required. You are now ready to move along to the next Meteorology lesson you have not completed or to any other module you wish. You can advance to the Self Test Module if you feel ready to challenge the final exam. Good Luck! Regional Gliding School