The temperature is influenced by a lot of physical processes with a diurnal cycle (e.g. difference
between valley and foreland). Heat island effects of big cities, etc. are represented in temperature measurements, too.
Positive deviation means: temperature of the station is higher than the surrounding stations.
Negative deviation means: temperature of the station is lower than the surrounding
The potential temperature is calculated with the following equation:
- q: potential temperature
- T: station temperature
- p: station pressure
- po = 1000 hPa
- R = 287 JK-1kg-1
- cp = 1004 J kg-1 k -1
Up to now only low level stations (0 m £ h £750 m) have been checked.
T (emperatue) und p(ressure) are the measured values.