The permanent observatory on Col Margherita, operating since 2013, has proven to be a key resource for investigating the chemical composition of atmospheric aerosol transported from the eastern Venetian plain facing the Adriatic Sea. On the other hand, Monte Baldo is part of the pre-alpine area, which has been identified as a special focus of orographic convection.
DECIPHER will combine field measurements of aerosol and gaseous species with a modelling approach to completely explain the transport processes.
The Monte Baldo site offers the advantage of a simple plane slope, allowing for measurements of local processes and their dependence on environmental conditions under a “cleaner” orographic situation. It can nevertheless be considered on a local scale as a prototype situation for more complex landforms. Therefore, the progress achieved from the observations performed in such an ideal site, once transferred into model parameterizations, can help in representing more complicated features.
The surroundings of Col Margherita are complex, and a full characterization of the surface layer processes is difficult to achieve only by means of monitoring, as it would require a coverage that is not realistically attainable. Rather, a modelling approach is more promising, provided the correct parameterization is adopted for turbulent fluxes and local advection over sloping terrain.