Aviation Weather Questions And Amswers

2.199: Describe the characteristics of the troposphere. - Atmospheric layer with an average height of 36,000 feet MSL, with variance in height from pressure systems and seasonal differences. Temperature decreases and air becomes less dense with increases in altitude. All weather occurs in this atmospheric layer. 2.200: Describe the characteristics of the tropopause. - Transition zone between the troposphere and the stratosphere. Temperature is constant, with moderate to severe turbulence from the jet stream just below this area. 2.201: Describe the characteristics of the stratosphere. - Atmospheric layer that is thin and smooth with excellent visibility. Temperature is constant until 66000 ft. MSL, where temperature lapse inverts. 2.202: Describe the flight conditions associated with the troposphere. - Large amounts of moisture, winds increase with altitude, contains nearly all weather. 2.203: Describe the flight conditions associated with the tropopause. - Contains turbulence, contrails and may contain the tops of severe thunderstorms. 2.204: Describe the flight conditions associated with the stratosphere. - Thin and smooth with excellent visibility. 2.205: Define lapse rate. - The decrease in atmospheric temperature with increasing altitude. 2.206: State the average lapse rate in degrees Celsius. - 2°C for each 1000 feet of altitude. 2.207: Define atmospheric pressure. - The pressure exerted on a surface by the atmosphere due to the weight of the column of air directly above that surface.