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Property of Lear Siegler

Property of Lear Siegler. Welcome to. AVIATION WEATHER. 7 out of 10 Atmosphere & Airmasses, Pressure & Winds, Stability and Clouds 7 out of 10 Frontal Weather 7 out of 10 Weather Hazards 7 out of 10 Weather Reports & Forecasts 7 out of 10 Weather Charts.

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Property of Lear Siegler

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  1. Property of Lear Siegler

  2. Welcome to... AVIATION WEATHER

  3. 7 out of 10 Atmosphere & Airmasses, Pressure & Winds, Stability and Clouds 7 out of 10 Frontal Weather 7 out of 10 Weather Hazards 7 out of 10 Weather Reports & Forecasts 7 out of 10 Weather Charts Avn Weather Exam – June 4

  4. Why is weather important? Weather affects everything we do!

  5. Air temperature • Humidity • Clouds • Precipitation • Atmospheric Pressure • Wind What is weather? The state of the atmosphere with respect to temperature, moisture content, turbulence, and cloudiness.

  6. Terminal Learning Objective ACTION: Plan a flight for weather considerations CONDITION: Acting as an aviator and given an IFR or VFR flight mission and available weather information. STANDARD: In accordance with (IAW) Army Regulation (AR) 95-1, and Field Manual (FM) 1-230

  7. ELO # 1 ACTION: Identify the composition of the atmosphere and its effects on weather. CONDITION: Given pertinent information about the atmosphere. STANDARD: IAW FM 1-230 para 2-2

  8. NITROGEN 78% OXYGEN 21% OTHER GASES Dry Air 1% Property of Lear Siegler

  9. Natural Air = Dry air + Condensation Nuclei and Water Vapor

  10. ELO # 2 ACTION: The student will identify the layers of the atmosphere, height, and in which layer weather occurs. CONDITION: Given pertinent information about the atmosphere. STANDARD: IAW FM 1-230 para 2-3

  11. Layers of Atmosphere • Troposphere • Tropopause • Stratosphere

  12. 25,000' Tropopause 60,000' Troposphere Property of Lear Siegler

  13. Property of Lear Siegler

  14. Property of Lear Siegler

  15. Stratosphere 25,000' Tropopause 60,000' Troposphere Property of Lear Siegler

  16. ELO # 3 ACTION: The student will identify the atmospheric circulation, Coriolis force, and the three-cell theory. CONDITION: Given pertinent information about the atmosphere. STANDARD: IAW FM 1-230 para 6-2, 3, 4

  17. Atmospheric circulation begins with uneven heating. Property of Lear Siegler

  18. H L L L H Property of Lear Siegler

  19. Uneven heating from the sun Atmospheric circulation is modified by…

  20. Uneven heating from the sun Coriolis Force – The apparent force caused by the unequal speed of rotation of the earth’s surface. This force deflects non-steerable bodies to the right in the Northern Hemisphere. Atmospheric circulation is modified by…

  21. Uneven heating from the sun Coriolis Force – The apparent force caused by the unequal speed of rotation of the earth’s surface. This force deflects non-steerable bodies to the right in the Northern Hemisphere. Tilt of the earth Atmospheric circulation is modified by…

  22. 3 3 H 2 2 L L H H H H 1 1 L L L H 1 H 1 H H L L H 2 2 3 3 Property of Lear Siegler

  23. H L L L H H H H L L L L L H H H H L L H Property of Lear Siegler

  24. H L L L H H H H L L L L L H H H H L L Global Circulation H Property of Lear Siegler

  25. Local circulation discussed in future classes

  26. ELO # 4 ACTION: The student will identify the four types of heat transfer. CONDITION: Given pertinent information about heat energy. STANDARD: IAW FM 1-230 para 3-5

  27. RADIATION METHODS OF HEAT TRANSFER Property of Lear Siegler

  28. RADIATION METHODS OF HEAT TRANSFER • CONDUCTION • CONVECTION Strongest thermal currents created over landmass during daylight hours Property of Lear Siegler

  29. RADIATION METHODS OF HEAT TRANSFER • CONDUCTION • CONVECTION • ADVECTION Property of Lear Siegler

  30. Insolation

  31. Terrestrial Radiation

  32. Insolation Insolation Conduction

  33. Conduction

  34. Advection Advection Convection

  35. Sea Breeze Effect

  36. Land Breeze Effect

  37. Break Time Be back prior to arrival at OZR. (ETA 00+10)

  38. ELO# 5 ACTION: The student will identify the relationship of temperature with altitude change, to include temperature inversions. CONDITION: Given pertinent information about the temperature. STANDARD: IAW FM 1-230 para 3-7b

  39. Temperature A MEASUREMENT OF THE LEVEL OF INTENSITY OF HEAT ENERGY MEASURED IN DEGREES CELSIUS Property of Lear Siegler

  40. Warmest temperatures near ground • Decreases with altitude • Standard Lapse Rate • OLR – Observed Lapse Rate

  41. TEMPERATUREINVERSIONS • NOCTURNAL • FRONTAL WARMER AIR ABOVE COLDER AIR Property of Lear Siegler

  42. Best conditions for nocturnal inversion - clear and cool night Property of Lear Siegler

  43. Overcast Sky / Greenhouse Effect prevents a temperature inversion Property of Lear Siegler

  44. 03o C 0o C 05o C

  45. Property of Lear Siegler

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