SMART-HELIOS is a newly developed instrument for measuring spectral radiative properties of clouds. It was built by enviscope GmbH on behalf of and in co-operation with the Leipzig Institute for Meteorology (LIM) and the Leibniz Institute for Tropospheric Research (TROPOS).
SMART-HELIOS is designed to be operated below a helicopter and in combination with the „Airborne Cloud Turbulence Observation System“ ACTOS. It is gimbal-mounted (20 m below the helicopter) and fixed within the rope carrying ACTOS .
The instrument measures radiances and irradiances for the visible and near-infrared spectral ranges above the clouds by means of two optical inlets an four spectrometers, while ACTOS simultaneously measures 150 m below the microphysics and turbulence parameters of the same part of the cloud.