What is a temperature inversion and why is it dangerous?
A temperature inversion is when the temperature rises with height in the troposphere rather than decreasing, as it typically does. This is most common at the surface, particularly at higher latitudes on cold mornings. It isn't dangerous to my knowledge, except perhaps specific interests in aviation for example.
Normally, temperature decreases as altitude increases. In a temperature inversion, the temperature increases as altitude increases, up to the level of air that is causing the inversion. See "Temperature change as altitude increases?" for info on how temperature normally decreases with altitude when there is not a temperature inversion.The rate at which the temperature goes down is down 1.1 degrees celsius for every 500 feet you go up.
What happens when the temperature inversion occurs and traps cool air at the bottem and warm air at the top?
One thing that can happen is that you get freezing rain, which is precipitation that falls as a liquid (through warmer air aloft) and then freezes on the ground or near the ground because the inversion has caused colder air to accumulate at the surface. This can present a dangerous situation for driving.
An inversion is produced whenever radiation from the surface of the earth exceeds the amount of radiation received from the sun, which commonly occurs at night, or during the winter when the angle of the sun is very low in the sky In the troposphere (the lowest layer of the atmosphere closest to the earth) temperature as a general rule decreases with altitude. That is, the higher up in the air, or the higher up…
In a thermocouple the temperature of the cold junction is 20oC the temperature of inversion is 520oC What is The neutral temperature?
Depends on the thermometric scale. If you are talking about °C, yes it is dangerous, it's hotter than boiling watter. If you are talking about °F, it is a dangerous body temperature (If it is a body temperature, find a doctor) but is not a dangerous environmental temperature (it is hot, but not dangerous, if you are in an environment that hot, you must keep drinking watter and find a more comfortable (and cold) place)…
Normally, the temperature in the troposphere decreases with height. In an inversion, it increases. There are several reasons that this can happen, but some results include increased pollution in the summer, and particularly cold mornings in the fall and winter when your cell phone may have some trouble with reception.
A thermal inversion is when the normal decrease in air temperature with increasing altitude is reversed and air above the ground is warmer than the air below it. Thermal inversions occur when the warm, less dense air mass moves over a dense, cold air mass. Effects of thermal inversion are extreme weather conditions including freezing rain, intense thunderstorms, and tornadoes.