According to the opinion of many researchers, a likely effect of
climate change in the coming years will be the heat waves . In order to
adapt to this context , France has implemented an experiment to get some
"cooling island effect" in large cities, where the high temperature in
the summer can create a strong discomfort of the citizens and tourists.
Plans are to install in the streets and sidewalks, a series of water
spray nozzles, operating at critical times in order to cool the asphalt
and decrease the effect of the heat wave . For a proper implementation
of these nozzles , has been initiated a first phase of microclimatic
monitoring in some streets of the city of Paris and Lyon in order to
obtain detailed maps of the heat islands.
Due to the great knowledge about thermal environments and
meteorological monitoring stations, LSI LASTEM has provided a series of
ten monitoring stations equipped with the following sensors:
- Wind spees and direction
- Air temperature and Relative humidity
- Radiant temperature
- Solar radiation
- Temperature of the asphalt
- Heat flow of the asphalt
The stations acquire data and transfer them to the control center
where special heat stress indexes are used to define the thermal
sensation of people.
In a second phase , when the system will be in operation, the
monitoring system will measure in real time mode the microclimatic
parameters and when they will exceed the thresholds defined , the system
will control the opening/closing of the water nozzles.
Read more: The cities of tomorrow