Vertical temperature profiles represent a very important factor for various analytical and numerical studies, such as weather forecasts, air pollution models and CFD simulations. These temperature profiles are especially important during the winter periods, when temperature inversions occur. The cities in the natural valleys, such as the city of Sarajevo, B&H, are strongly affected by this phenomenon. In this paper, a method for quantitative characterization of vertical temperature profiles, which is based on the in-house developed data acquisition system and the unmanned aerial vehicle, is presented. Comprehensive calibration and verification procedure was performed and explained in details. Field measurements were focused on the winter period and extreme temperature inversion scenarios. The correlation with the air pollution in the city, for the same period, was discussed as well.

Carbon dioxide (CO2) is important factor of indoor air quality. In this paper we evaluate several CO2 sensors of latest generation. All sensors work on the same principle: nondispersive infrared (NDIR) detection. The sensors were evaluated in the campaign that lasted for several months. Good agreement between all sensors was observed, despite different construction, factory calibration and price. Finally, inexpensive method is proposed for continuous measurement of indoor concentrations of CO2.