The temperature sensors introduced in this chapter are in no way purely meteorological temperature sensors. The chapter also introduces sensors for soil temperature, because the soil temperature is of great significance to processes in the soil, to the soil life (the edaphon) and to plants.
Moreover both temperatures can deliver information on the water balance.
Because air temperature and air humidity are closely related to each other, measurement equipment exists with sensor combinations that can record both of these parameters together.
The temperature probe for measuring the temperature on the surface of the soil is installed at the desired height parallel to the soil surface using a ground spike.
These combined humidity and temperature sensors are compact sensors with a rod design and with a high degree of accuracy that have been specifically developed for use in the meteorological area.