Per citar aquest document: http://ddd.uab.cat/record/131567
Seasonality of monoterpene emission potentials in Quercus ilex and Pinus pinea : implications for regional VOC emissions modeling
Keenan, Trevor (Centre de Recerca Ecològica i Aplicacions Forestals)
Niinemets, Ülo (Eesti Maaülikool. Institut of Agricultural and Environmental Sciences)
Sabaté i Jorba, Santi (Centre de Recerca Ecològica i Aplicacions Forestals)
Gracia, Carles (Centre de Recerca Ecològica i Aplicacions Forestals)
Peñuelas, Josep (Centre de Recerca Ecològica i Aplicacions Forestals)

Data: 2009
Resum: VOC emissions from terrestrial ecosystems provide one of the principal controls over oxidative photochemistry in the lower atmosphere and the resulting air pollution. Such atmospheric processes have strong seasonal cycles. Although similar seasonal cycles in VOC emissions from terrestrial ecosystems have been reported, regional emissions inventories generally omit the effect of seasonality on emissions. We compiled measurement data on seasonal variations in monoterpene emissions potentials for two evergreen species (Quercus ilex and Pinus pinea) and used these data to construct two contrasting seasonal response functions for the inclusion in monoterpene emission models. We included these responses in the Niinemets et al. model and compared simulation results to those of the MEGAN model, both with and without its predicted seasonality. The effect of seasonality on regional monoterpene emissions inventories for European Mediterranean forests dominated by these species was tested for both models, using the GOTILWA+ biosphere model platform. The consideration of seasonality in the Niinemets et al. model reduced total estimated annual monoterpene emissions by up to 65% in some regions, with largest reductions at lower latitudes. The MEGAN model demonstrated a much weaker seasonal response than that in the Niinemets et al. model, and did not capture the between species seasonality differences found in this study. Results suggest that previous regional model inventories based on one fixed emission factor likely overestimate regional emissions, and species-specific expressions of seasonality may be necessary. The consideration of seasonality both largely reduces monoterpene emissions estimates, and changes their expected seasonal distribution.
Nota: Número d'acord de subvenció EC/FP5/00075
Nota: Número d'acord de subvenció EC/FP5/506675
Nota: Número d'acord de subvenció EC/FP6/512464
Nota: Número d'acord de subvenció EC/FP7/212535
Nota: Número d'acord de subvenció MEC/CGL2006-04025
Nota: Número d'acord de subvenció MICINN/CSD2008-00040
Nota: Número d'acord de subvenció AGAUR/2005/SGR-00312
Drets: Tots els drets reservats
Llengua: Anglès
Document: article ; recerca ; publishedVersion
Matèria: Monoterpene emission ; Regional VOC emission
Publicat a: Journal of geophysical research : atmospheres, Vol. 114 Issue D22 (Nov. 2009) , p. D22202, ISSN 2169-897X

DOI: 10.1029/2009JD011904


11 p, 390.6 KB

El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > CREAF (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Articles > Articles de recerca
Articles > Articles publicats

 Registre creat el 2015-04-14, darrera modificació el 2016-06-04



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