Iíve been considering for some time purchasing a weather station and one facet of the weather I would like to record is the freezing level. I enjoy winter mountaineering and it would be really useful to know reasonable accurately where the freezing level is so I can estimate what routes would be likely to be in condition.
At the most basic level Iím aware that dry air drops by about 1 degrees C per 100 meter and saturated moist air, drops by about 0.5 degrees C per 100 meter. However, I would assume that in reality the situation is going to be far more complicated than this! But Iím presuming that, as long as I know my current altitude, temperature and humidity level, I should be able to estimate the current freezing level. However, do any weather station (or operating systems) log and graph this data? Would I need any other sensors to calculate this?