Testing of models of stomatal ozone fluxes with field measurements in a mixed Mediterranean forest

摘要: Abstract Mediterranean forests close to urban areas are exposed polluted plumes loaded with tropospheric ozone. This is the case of Castelporziano Estate, a 6000 ha forest 25 km from Rome downtown on coast Sea. In September 2011 we started an intensive field campaign aimed at investigating ozone deposition mixed forest, mainly composed by Quercus suber , ilex Pinus pinea . Measurements canopy level eddy covariance technique were supported vegetation survey and measurement all environmental parameters which allowed calculate stomatal fluxes. Leaf-level measurements used parameterize models conductance based Jarvis-type Ball–Berry approach. We show changes in magnitude fluxes warm (September) cold period (October–December). Stomatal component explained almost totality during days, but contributed only up 50% total suggesting that other sinks (e.g. chemistry gas-phase) play major role. Modeled approach (DO3SE) correlated measured better than using A third model modified equation was proposed account for non-linear dependency relative humidity. research will help development metrics ozone-risk assessment advance our understanding biosphere–atmosphere exchange.