Wind , Clouds , and Precipitation

1. Wind, Clouds, and Precipitation

2. WINDS

3. DIFFERENCES IN AIR PRESSURE UNEQUAL HEATING OF AIR

4. Responsible for triggering the initial movement of air.

5. CORIOLIS EFFECT SHIFT IN WIND DIRECTION DUE TO EARTH’S ROTATION

7. As air moves from high to low pressure in the northern hemisphere, it is deflected to the right by the Coriolis force. In the southern hemisphere, air moving from high to low pressure is deflected to the left by the Coriolis force.

8. Flushing Toilets on the Equator Myth or Real: Toilets flushed in the northern hemisphere apparently spin to the right, in the southern hemisphere the water spins left -- this is supposedly caused by the Coriolis effect. And on the equator? It's a straight shot down.

9. http://www.phschool.com/atschool/phsciexp/active_art/global_winds/index.htmlhttp://www.phschool.com/atschool/phsciexp/active_art/global_winds/index.html

10. The global wind belts are formed by two main factors: the unequal heating of the earth by sunlight and the earth's 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.htm The atmosphere tries to send the cold air toward the equator at the surface and sends warm air northward toward the pole at higher levels.

11. Click on the link to watch an animation: Animation 1 Animation 2 http://www.mhhe.com/biosci/genbio/tlw3/eBridge/Chp29/animations/ch29/global_wind_circulation.swf http://www.geography.hunter.cuny.edu/~tbw/wc.notes/7.circ.atm/animations/GlobalWind.html

12. Earth’s Winds

13. GLOBAL WINDS UNEQUAL HEATING EQUALS GLOBAL PATTERN OF AIR CIRCULATION

14. LOCALWINDS LAND BREEZE SEA BREEZE MONSOON

15. SEASONAL WINDS MONSOONS CARRIES WARM MOIST AIR

16. Philippines Northeast Monsoon (cold and wet) Southwest Monsoon (dry)

17. DOLDRUMS CALM SURFACE WINDS AT EQUATOR (0 degrees latitude)

18. TRADE WINDS AIR MOVING BACK TO THE EQUATOR FORMING A BELT OF WARM, STEADY WINDS

19. HORSE LATITUDES 30 degrees North and South of Equator Warm air cools and sink; clear skies; winds are calm

20. PREVAILING WESTERLIES 40-60 degrees Latitude (West to East) Strong Winds

21. POLAR EASTERLIES COLDBUT WEAK WINDS EAST TO WEST

22. http://www.phschool.com/atschool/phsciexp/active_art/global_winds/index.htmlhttp://www.phschool.com/atschool/phsciexp/active_art/global_winds/index.html

23. JETSTREAMS “rivers of air" ABOVE 12 KMS 180-350 Km/Hr (speed)

25. CLOUDS

26. http://www.youtube.com/watch?v=ODImMpGFUa4&feature=related

27. http://video.about.com/weather/How-Do-Clouds-Form-.htm

28. MOISTURECONDENSES ON SMALL PARTICLES OF DUST/ SOLIDS IN THE AIR

29. DEW POINT TEMPERATURE AT WHICH AIR CONDENSES

30. MOLECULES COLLIDE AND REBOUND SPEED DECREASES WHY RISING AIR COOLS

31. CONDENSATION WATER VAPOR CHANGES INTO LIQUID

32. CLOUDFORMATION • WATER VAPOR • CONDENSATION NUCLEI • LOW TEMPERATURE

33. Source: http://www.vivoscuola.it/US/RSIGPP3202/umidita/lezioni/form.htm

34. Why do clouds have flat bottoms? Dew point

35. Cloud droplets Ice Snow

36. TYPES OF CLOUDS

37. When warm air rises, other cooler air rushes in to take its place. The air that rushes in moves parallel to the ground. It is this moving air that we call “wind”. Windis caused by the uneven heating of the earth’s surface. Air that moves up 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 air above the Earth’s surface. Water from the Earth’s lakes, oceans, land surfaces, and plants evaporates into this warmer air. Eventually, the warm moisture-filled air rises and becomes cool. Now the air can no longer hold all the moisture it had acquired when it was near the surface of the Earth. As a result, much of the water vapor in the air condenses. Water vapor that condenses and forms clouds can fall to the Earth as rain, sleet, snow, or hail. Water that falls from the atmosphere to the Earth is called precipitation.

39. Hurricanes/Typhoons/ Cyclones & Tornadoes

40. http://www.youtube.com/watch?v=zP4rgvu4xDE

41. 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

42. http://www.youtube.com/watch?v=5iN352idLks&feature=fvwrel How Hurricanes Form

43. Hurricanes/typhoons/cyclones-what’s in a name? LOCATION, LOCATION, LOCATION http://spaceplace.nasa.gov/hurricanes/

44. HOW?

46. hurricanes/typhoons and tornadoes spin COUNTER-CLOCKWISE in NORTH H H H H

48. http://edition.cnn.com/2011/US/04/28/severe.weather/index.html?hpt=T2http://edition.cnn.com/2011/US/04/28/severe.weather/index.html?hpt=T2 http://edition.cnn.com/2011/US/04/27/tornado.outbreak/index.html?hpt=T1 Experts: Severe weather across South could set tornado record

49. http://news.yahoo.com/s/yblog_thelookout/20110428/ts_yblog_thelookout/watch-tuscaloosas-terrifying-tornadohttp://news.yahoo.com/s/yblog_thelookout/20110428/ts_yblog_thelookout/watch-tuscaloosas-terrifying-tornado Yahoo video clips Tornado Outbreak of 2011 The jet stream is the main reason for all the severe weather. The warm humid air from the south is clashing with the cool dry air coming down from Canada and where the two meet is where we find severe thunderstorms and tornadoes.

50. Including yesterday's storm, there have been a whopping 800 reports of tornadoes in April, easily surpassing April 2003's all-time record of 543 twisters. http://www.nytimes.com/interactive/2011/04/28/us/map-of-the-tornadoes-across-the-south.html