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CIMEL sunphotometer: CIMEL is a high-precision multiband, automatic sun-and-sky scanning radiometer that provides measurements of the optical properties of the atmosphere by measuring the sun and sky radiance. Due to its very low power consumption and its self-powered system, it meets the requirements of continuous monitoring in terms of reliability, long term and very low maintenance cost.

Most recent measurements of CIMEL Antikythera.

Field Mill Electrometer (JCI 131 FM): A compact and robust instrument for continuous long term measurements of the ambient electric field, adverse environmental conditions. It is particularly suitable for continuous monitoring of atmospheric electric field conditions, associated with varying weather conditions and electric content, such as during thunderstorms or extreme volcanic activity. The output signal is proportionate to the electric field strength and currently operates at a range of 2kV/m with a precision better than 1%. The instrument is mounted on a 3m mast in order to avoid ground distortions. The FM is ideal for remote site installation due to its low power consumption and straightforward data collection system.

Davis Vantage Pro2 Weather Station: A weather station at PANGEA-ReACT research Infrastructure provides useful information on surface meteorological parameters, especially those that may impact the core grround-based measurements, such as precipitation (fast response detection), humidity, strong winds and heat fluctuations. The measurement system includes a precipitation detection system with fast response times.

Direct-sun Solar Polarimeter (SolPol): A prototype solar polarimeter, kindly conferred by the University of Hertfordshire, is designed to operate with direct sun tracking capabilities and measures the degree of linearly and/or circularly polarized sunlight due to forward scattering from atmospheric aerosols. Measurements are centered on 550nm, due to light detector current limitations, while the instrument’s precision and accuracy are of order of the 1ppm and 1%, respectively. SolPol is a robust instrument capable of manual operation per demand, especially under heavy Saharan dust loads and with low maintenance requirements. It is hosted within a medium sized astronomical dome for the optimum protection-to-applicability relation.

UV Multi-Filter Rotating Shadowband Radiometer (UV-MFR 7): Ultraviolet (UV) Multi-Filter Rotating Shadowband Radiometer (Model UVMFR-7), an instrument that measures global, diffuse, and direct UV solar irradiance at the same time. The recording channels are centered around seven wavelengths (300, 305, 311, 317, 325, 332 and 368 nm) with Nominal Full Width Half Maximum at 2 nm. Measurements are performed every 10 seconds and averaged values are stored every 1 minute. It is designed to operate automatically and autonomously in remote locations with only periodic manual cleaning of the fore optic.

About Us

ReACT stands for “Remote sensing of Aerosols, Clouds and Trace gases”, to describe the research focus of the respective research team led by Dr. Vassilis Amiridis. ReACT consists of highly motivated scientists within the field of Atmospheric Sciences, combining a number of Post-doc researchers, Ph.D. and M.Sc. students as well as other research and technical staff, using the resources, infrastructure and experience of the Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing (IAASARS).

Address :

Vas. Sofias 79

Phone :

+30 210 81 09 182



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