Abstract:
The coastal Atmospheric Boundary Layer (ABL) structure is subject of research in many countries as large number of cities and industrial activities are located onshore seas, oceans or lakes. Mean characteristics of ABL at a Bulgarian Black Sea coastal site are obtained based on unique long-term (August 2008 – October 2016) acoustic remote sensing measurements. Marine and land nocturnal air flow vertical profiles are studied. Exploring data of wind and turbulence profiles with high spatial (10 m) and temporal (10 min) resolution from SCINTEC MFAS sodar revealed typical parameters as the height of the Internal Boundary Layer (IBL), nocturnal ABL height over sea and land, etc. The seasonal variability of coastal ABL characteristics is explored. The reported results can be used for verification of theoretical, mesoscale and air quality models. The study contributes to the understanding of wind regime and turbulent structure of ABL in a region with modest observation networks and data near the surface and no measurements and data in vertical direction.