http://www.jets.dk/cs/forums/21/ShowForum.aspxQuestions about the Aviation Top 100 list.en-USCommunityServer 2.0 (Build: 60526.2668)http://www.jets.dk/cs/forums/thread/2128.aspxThu, 23 Jan 2003 05:59:55 GMTa23efcf1-9e75-4ff9-be18-cd9cb68b9485:2128rainman_020http://www.jets.dk/cs/forums/thread/2128.aspxhttp://www.jets.dk/cs/forums/commentrss.aspx?SectionID=21&PostID=2128This is in pilotspeak, so probably not as technical as you want. <br /> <br />1) There is no real realtionship. The troposphere is narrower at the poles and wider at the equator. <br /> <br />2) Temp inversion is a low to the ground effect, usually from a clear night with calm winds. The cooler air, because of its greater density, settles close to the ground, and the warmer air forms a blanket above it in a temperature inversion. Thus, if you have winds, they mix the air and no inversion. <br /> <br />3) See above. You're now talking about temperature lapse rate. -2* C per 1,000 feet of altitude up from sea level. On a standard day, sea level is 15* C. Therefore, 3,000m or 9,900 feet is approximately -5* C ... on a standard day. There are many things that can change the temperature of a region, most important of which is the jet stream. <br /> <br />4) The ozone layer is in top of the stratosphere. The stratosphere is from 6 - 30 miles altitude. <br /> <br />5) There's lots of aerodynamics and fluid flow for Mach and the speed of sound. http://www.mathpages.com/home/kmath282/kmath282.htm Go here.http://www.jets.dk/cs/forums/thread/2123.aspxTue, 21 Jan 2003 07:05:48 GMTa23efcf1-9e75-4ff9-be18-cd9cb68b9485:2123lucasiu0http://www.jets.dk/cs/forums/thread/2123.aspxhttp://www.jets.dk/cs/forums/commentrss.aspx?SectionID=21&PostID=2123Can anyone answer the questions on aviation metrology? <br /> <br />1. How is the height of the troposphere affected by ground temperature and pressure? Is higher ground temperature means higher troposphere height? <br /> <br />2. Someone said there is temperature inversion when the ground temperature is low. What is the temperature inversion rate for different sea level temperature? <br /> <br />3. If the rule of temperature inversion is true, then how to explain the extremely low temperature of Vostok, which is over 3000m above sea level, and has minimum temperature of -88C? What is the temperature inversion rate for different land height? <br /> <br />4. Can anyone tell me the height of ozone layer? <br /> <br />5. Can anyone tell me what is the speed of sound at different height at different ground temperature and pressure? <br /> <br />Please answer the questions with figures stating the characteristics of the atmosphere. <br /> <br />Thanks.