A joint pilot project run in 2015 by Ericsson, Hi3G Sweden and Swedish Meteorological and Hydrological Institute (SMHI). The Hi3G commercial mobile backhaul microwave network in Gothenburg was monitored and evaluated for the usage of microwave links as rainfall measurement tools.
Between mobile towers there is signal damping by precipitation and this damping can be converted to precipitation intensity.
Benefits with microwave measurements against traditional weather radar are a higher resolution in time and space and the possibility of measurements in areas where there is no weather radar coverage.
The large amount of microwave links in populated areas give the opportunity for detailed precipitation maps in cities. Another benefit is that the measurements are closer to the ground than weather radar measurement, where there is a risk of missing precipitation from low clouds or measure precipitation that evaporates before reaching the ground.