DIFFERENCES IN AIR PRESSURE UNEQUAL HEATING OF AIR
Responsible fortriggering the initial movement of air.
CORIOLIS EFFECT SHIFT IN WIND DIRECTION DUE TO EARTH’S ROTATION
As air moves from high to low pressure in the northern hemisphere, it is deflected to theright by the Coriolis force. In the southern hemisphere, air moving from high to lowpressure is deflected to the left by the Coriolis force.
Flushing Toilets on the EquatorMyth or Real:Toilets flushed in the northern hemisphereapparently spin to the right, in the southernhemisphere the water spins left -- this issupposedly caused by the Coriolis effect. Andon the equator? Its a straight shot down.
The global wind belts are formed by two main factors:the unequal heating of the earth by sunlight and the earths spin. The unequal heating makes the tropical regions warmer than the polar regions. As a result, there is generally higher pressure at the poles and lower at the equator. Source: http://www.islandnet.com/~see/weather/whys/globalwinds.htmThe atmosphere tries to send the cold air toward the equator atthe surface and sends warm air northward toward the pole athigher levels.
Click on the link to watch an animation: Animation 1 Animation 2http://www.mhhe.com/biosci/g http://www.geography.hunter.cuny.edu/~tenbio/tlw3/eBridge/Chp29/ani bw/wc.notes/7.circ.atm/animations/Globamations/ch29/global_wind_circ lWind.html ulation.swf
When warm air rises, other cooler air rushes in to take its place. The air thatrushes in moves parallel to the ground. It is this moving air that we call“wind”.Wind is caused by the uneven heating of the earth’s surface. Air that movesup and down is important in making winds. This is called a current.Warm air near the surface of the Earth can hold more moisture than cool airabove the Earth’s surface.Water from the Earth’s lakes, oceans, land surfaces, and plants evaporatesinto this warmer air. Eventually, the warm moisture-filled air rises andbecomes cool. Now the air can no longer hold all the moisture it hadacquired when it was near the surface of the Earth. As a result, much of thewater vapor in the air condenses.Water vapor that condenses and forms clouds can fall to the Earth asrain, sleet, snow, or hail. Water that falls from the atmosphere tothe Earth is called precipitation.
A hurricane is a tropical storm that has winds of 119 kilometers per hour or higher. A hurricane begins over warm water as a low-pressure area, or tropical disturbance. If the tropical disturbance grows in size and strength, it becomes a tropical storm, which may then become a hurricane. http://www.youtube.com/watch?v=5iN352idLks&feature=fvwrel How Hurricanes Form
http://www.youtube.com/watch?v=5iN352idLks&feature=fvwrel How Hurricanes Form
Hurricanes/typhoons/cyclones-what’s in a name?LOCATION, LOCATION, LOCATIONhttp://spaceplace.nasa.gov/hurricanes/
hurricanes/typhoons and tornadoes spin COUNTER-CLOCKWISE in NORTH H H H H
http://edition.cnn.com/2011/US/04/28/severe.weather/index.html?hpt=T2http://edition.cnn.com/2011/US/04/27/tornado.outbreak/index.html?hpt=T1Experts: Severeweather acrossSouth could settornado record
http://news.yahoo.com/s/yblog_thelookout/2 0110428/ts_yblog_thelookout/watch- tuscaloosas-terrifying-tornado Yahoo video clips Tornado Outbreak of 2011The jet stream is the main reason for allthe severe weather. The warm humidair from the south is clashing with thecool dry air coming down from Canadaand where the two meet is where wefind severe thunderstorms andtornadoes.
Including yesterdays storm, therehave been a whopping 800 reportsof tornadoes in April, easilysurpassing April 2003s all-timerecord of 543 twisters. http://www.nytimes.com/interactive/20 11/04/28/us/map-of-the-tornadoes- across-the-south.html
http://news.yahoo.com/s/yblog_thelookout/2 0110428/ts_yblog_thelookout/watch- tuscaloosas-terrifying-tornado Yahoo video clips TornadoesA tornado is a rapidly whirling, funnel-shapedcloud that reaches down from a storm cloud totouch Earth’s surface.Tornadoes develop in low,heavy cumulonimbusclouds—the same clouds that bringthunderstorms.