RADO-Cj Station





Research laboratory – Remote sensing
Romanian Atmospheric Observatory – Cluj station


Located in the Faculty of Environmental Science and Engineering: C wing, 3rd floor
Head of laboratory: Lect. PhD. Eng. Nicolae Ajtai

Laboratory members: Prof. PhD. Eng. Alexandru Ozunu, Lect. PhD. Eng. Nicolae Ajtai, Lect. PhD. Dan Costin, Lect. PhD. Eng. Török Zoltán, PhD. student Eng. Horaţiu Ştefănie

The Cluj station is part of Romanian 3D Research Observatory.

Romanian Atmospheric research 3D Observatory (RADO) is a state-of-the-art facility aiming to improve modeling of physical, chemical, and biological processes, to assess the effects of climate change, and to quantify and reduce uncertainties in evaluating the hydrological cycle and its influence on natural resources.
The main objective is to research low atmospheric composition (greenhouse gases, aerosols, radioactive particles).
There are also investigated atmospheric processes such as gas and aerosol dynamics, radiative effects, effects on climate, cloud formation, absorption in vegetation and soil.


Operational activities:
- monitoring of greenhouse gases;
- monitoring of aerosols: PM10, PM2.5 particles at ground level, optical and microphysical parameters of aerosols;
- measurement of meteorological parameters;

Scientific activities:
- synergetic analysis of polluting gases;
- studies of impact on radiative processes in the atmosphere leading to climate change;
- simulation of national scale atmospheric chemistry;
- impact studies, forecast;



Automatic Sun Tracking Photometer CE 318
The CE 318 automatic sun tracking photometer has been designed and realized to be a very accurate sun photometer with all the qualities of a field instrument: motorized, portable, autonomous (solar powered) and automatic. Its main purpose is to measure sun and sky radiance in order to derive total column water vapour, ozone and aerosols properties using a combination of spectral filters and azimuth/zenith viewing controlled by a microprocessor.


VIS - LIDAR system (532 nm elastic backscatter LIDAR)
Elastic backscatter LIDAR is a type of LIDAR which is typically used for studies of aerosols and clouds. The backscattered wavelength is identical to the transmitted wavelength, and the magnitude of the received signal at a given range depends on the backscatter coefficient of scatterers at that range and the extinction coefficients of the scatterers along the path to that range. The extinction coefficient is typically the quantity of interest.The LIDAR system is used to 3D monitoring (clouds, aerosols, dust, pollens), Planetary Boundary Layer (height, dynamics, structure), aerosols characterization (extinction and backscattering coefficients).

DUSTTRAK™ DRX Aerosol Monitor;
The DUSTTRAKTM Aerosol Monitor measures aerosols in a wide variety of environments, from offices and industrial workplaces to outdoor environmental and construction sites. It provides reliable exposure assessment by measuring particle concentrations corresponding to PM10, PM2.5, PM1.0 or respirable size fractions.

DUSTTRAK™ DRX Aerosol Monitor Model 8533
The Model 8533 is an advanced version of the DUSTTRAK™ II Aerosol Monitor known as DRX model. The primary difference between the basic single-channel DUSTTRAK II photometer and the Advanced DRX model are in the ability of the DRX advanced models to measure size fractions of the sampled aerosol in addition to making a mass based photometric measurement. This employs a patent pending method to simultaneously measure size segregated mass fraction concentrations (PM1, PM2.5, Respirable/PM4, PM10/Thoracic, and TPM) over a wide concentration range (0.001–150 mg/m3) in real time.

APOA-370 Ambient Ozone Monitor
The APOA-370 continuously monitors atmospheric ozone concentrations using a cross flow modulated ultraviolet absorption method. The APOA-370 employs an independent, internal dry-method sampling device to achieve the highest levels of sensitivity and accuracy. The dry method, due to its minimal maintenance requirements and capability of continuously monitoring and instantaneously analyzing gases in their unaltered state, has been a preferred method for monitoring the atmospheric pollution.

ML® 9820 Carbon Dioxide Analyser
The ML® 9820 analyzer is based on gas filter correlation spectroscopy which provides for accurate and reliable measurements of CO2 concentration which is corrected for temperature and pressure changes and displayed in units of parts per million (ppm) or milligrams per cubic meter (mg/m3).


UV and IR Ground-based imaging cameras are used for industrial and anthropogenic gas emission monitoring and assessment (SO2, particles), volcanic plume and visual range.

Weather Station
The weather station is used for monitoring meteorological parameters like temperature, relative humidity, atmospheric pressure, water vapour mixing ratio, wind speed and wind direction, solar radiation.