The role of anthropogenic and biogenic emissions on tropospheric ozone formation over Greece

In the frame of this work, the sensitivity of a grid-based photochemical mo del on the emission inventory is examined. More precisely, the role of vari ous emission categories on simulated oxidant formation is investigated and especially the biogenic ones. Special emphasis is given on the investigatio n of the role of the biogenic emissions on tropospheric ozone formation ove r areas with significant anthropogenic sources. The area of interest is the SE part of the Greek Peninsula where there are various types of anthropoge nic pollutant sources and important biogenic sources fi-om forest areas. Oz one air quality simulations were performed using the combined system of the atmospheric model RAMS and the photochemical model UAM. The simulations re vealed that there is a significant increase of the calculated ozone concent rations over areas with significant precursor sources when biogenic emissio ns are taken into account. This increase is more pronounced during the days with a significant regional scale transport. (C) 1999 Elsevier Science Ltd . All rights reserved.