To investigate the performance of the green walls, we are using two types of sensors connected to solar powered ZL6 dataloggers. These are soil moisture and temperature sensors, and air temperature and humidity sensors.
The first is the Teros 54 which measures soil moisture and temperature at 15, 30, 45, and 60 cm depths. This is placed along the walls of each of the 4 locations at the BMC building, including the control area which does not have a green wall.
The second is the ATMOS 14 - which measures the temperature, humidity, and air pressure, also at each of the four locations.
Given that the building has only 1 floor, it is estimated the sensor cables of 5 meter length can suffice to reach the top of the wall and thereby be connected to the sensors on the green roof, each per location. The image below shows the locations of the green wall sensors in blue.