Effect of Sea Breeze on Air Pollution in the Greater Athens Area. Part I. Comparison between Field Measurements and Numerical Results for the MEDCAPHOT Campaign.

Field measurements and numerical results are used to explain the impact of the sea breezes on the photochemical smog episodes observed in Athens during the MEDCAPHOT campaign (September 12-14, 1994). The code used in this study is TVM/LCC, a prognostic mesocale model coupled with the chemical mechanism LCC. The model results are compared with ground, LIDAR and aircraft measurements. The three days presented two characteristic summertime flow patterns for the Athens region. During September 12th and 13th, a strong synoptic wind from North prevented the sea breeze formation and reduced the ozone levels. On September 14th, the weaker synoptic forcing allowded sea breeze development. High ozone concentration values occurred at North and East to Athens.

CLAPPIER Alain;  MARTILLI A.;  GROSSI Paola;  THUNIS Philippe;  PASI F.;  KRUEGER B.;  CALPINI B.;  GRAZIANI Giovanni;  VAN DEN BERGH H.; 

1998-05-04

JRC16159

https://publications.jrc.ec.europa.eu/repository/handle/JRC16159,