Modellizazione dei flussi di ozono The workshop and Task Force Meeting (ICP Vegetation) proposed that the flux-based indicators should be included in the EMEP and GAINS model. Both encouraged further collaboration with the EMEP centres to explore the possibility of including the indicators in the GAINS model optimization and to carry out ex-post analysis for the revision of the Gothenburg Protocol.
Flusso stomatico di ozono Contenuto idrico del suolo Stadio fenologico Temperatura Radiazione solare Concentrazioni di O 3 Conduttanza stomatica
Perché è importante calcolare le mappe di flusso? AOT40 (media ) flusso (media )
The Task Force Meeting proposed the following policy-relevant indicators for all receptors: Agricultural crops: a POD 6 of 2 mmol m -2 to protect security of food supplies by protecting against loss of protein yield, an important crop quality parameter (note: a POD 6 of 1 mmol m -2 was also defined to protect against loss of yield quantity); Forest trees: a POD 1 of 4 mmol m -2 to protect against loss of carbon storage in living trees and loss of ecosystem services such as soil erosion, avalanche protection and flood prevention; Grasslands and pastures: a POD 1 of 2 mmol m -2 to protect against loss of vitality and fodder quality in productive grasslands and grasslands of high conservation value; Grassland areas of high conservation value: a POD 1 of 2 mmol m -2 to protect against loss of vitality of natural species.
Revised and new flux-based critical levels for effects of ozone on vegetation. Please note that there are different flux model parameterisations for each species
Dati necessari per calcolare i flussi: -Dati meteo 2005 (temperatura media, massima, minima; umidità relativa diurna; precipitazioni; radiazione solare; evapotraspirazione) -Dati concentrazioni orarie di ozono (anno 2005) -Dati tessitura del suolo (disponibili anche se in formato non leggibile se non con RAMS) Applicazione modello moltiplicativo di Jarvis basato sulla conduttanza stomatica (la conduttanza stomatica massima diminuisce in relazione ai parametri ambientali e meteorologici)
It was noted that in some Mediterranean areas the flux-based methodology may under-estimate effects.