Meteorology and air pollution experiment at the Black Sea coastal site Ahtopol - 2017

Coastal dynamics is a challenging topic not only for physical processes capturing but also for phenomena related to aerosols exchange and transport. Here we present results of an experimental campaign performed in August 2017 at Ahtopol (Bulgaria) in the frame of Collaboration program between ISAC-CNR and NIMH-BAS research centers. The aim of the campaign was to carry out investigation of air pollution and meteorological conditions at Ahtopol coastal site through collecting aerosols, observing physical parameters, analyzing air-masses circulation and comparing the equipment and methods used by the participating groups. The observation programme of the experiment included measurements to capture both physical and chemical parameters and to reveal the near surface characteristics of sea breeze onset and penetration inland as well as its effect on the aerosol concentration. Particle concentration (number particles/liter in 6 different fractions) was measured with Aerosol and Laser Particle counters. In addition, samples of wet and total deposition were collected. Chemical analysis of collected wet and dry deposition samples and impacted filters was performed and the results obtained were compared with those of previous investigations.