Flat Field Experimental Facility equipped with different instruments to study for the study of atmospheric turbulence under different stability conditions (convective, quasi-neutral, stably stratified).
10mt Tower: including four 3-D Sonic thermo-anemometer + fast thermo-hygrometer, plus one 2-D sonic anemometer, to measure wind speed and direction, Turbulent Kinetic Energy, turbulent fluxes of heat, momentum, water vapor, CO2.
10m Tower for Meteorological and Radiation measurements, such as pressure, Temperature, Relative Humidity, precipitation, short-wave and long-wave radiation up and down.
3-D SODAR to study the thermal structure of atmosphere, wind speed and direction, vertical wind velocity, variance of vertical velocity, Mixed Layer Height, Temperature structure parameter.
1-D monostatic high-resolution SODAR to study the thermal structure of atmosphere, vertical wind velocity, Mixed Layer Height.
Acoustic scintillometer to study integrated turbulence in the surface layer
A Lidar/Ceilometer system to study atmospheric backscatter profiles and Mixed Layer Height.
Facility and equipment
The federated observatory of the CNR Institute of the Atmospheric Sciences and Climate started operating in 1997, hosting instruments from different research groups both in the open field or above the institute buildings.
CIRAS is located in a suburban area, 5km SE of Rome (Italy), at 41°50.4'N - 12°38.8'E, 110 m MSL.
In addition to the turbulence-related instruments mentioned above, the facility includes a C-band dual polarization Doppler Radar - Polar 55C , and a laser disdrometer i.e. a surface-based laser-optical system conceived to measure simultaneously size and fall speed of hydrometeors passing through a laser matrix.
Technical support is provided by full time technicians of CNR ISAC.
Technical details of some of the relevant instrument at CIRAS are summarized above.