“…The prototype consists of the following main parts: Gas-analysis unit; aerosol unit; actinometric unit; airlines of communications; meteorological unit; and interface, control, and data processing unit. 2 , NO x , and O 3 gas analyzers (1, 2, 3, 4, and 5, respectively); ultrasonic anemometers (6); temperature and humidity sensors inside a radiation protective case (7); automated precipitation gauge at a rod (8); pyranometers at actinometric holder (9); atmospheric pressure sensor (10); aerosol diffusion spectrometer (11); optical aerosol spectrometer (12); nephelometer (13) The following components are provided in the prototype for monitoring trace gases: Greenhouse gas analyzer (CO 2 , CH 4 , and H 2 O) (1); CO analyzer (2); gas analyzers for chemically active gases (SO 2 , NO x , and O 3 ) (3, 4, and 5, respectively); high-pressure tanks filled with calibration gas mixtures (CO 2 , CH 4 , and CO) (19 and 20); high-pressure tank filled with a reference gas mixture (21); calibration SO 2 and NO 2 microstream sources (26 and 27); airflow distributors (17 and 18); and sampling devices (15, 24, 25, 28, 29, 30, 32, 33, 34, and 35). Main specifications of the prototype are given in [2].…”