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Sci Total Environ

Title:		"Estimating the biogenic emissions of non-methane volatile organic compounds from the North Western Mediterranean vegetation of Catalonia, Spain"
Author(s):		Parra R; Gasso S; Baldasano JM;
Address:		"Environmental Modelling Laboratory, Universitat Politecnica de Catalunya, Diagonal 647, 08028, Barcelona, Spain"
Journal Title:		Sci Total Environ
Year:		2004
Volume:		329
Issue:		1-Mar
Page Number:		241 - 259
DOI:		10.1016/j.scitotenv.2004.03.005
ISSN/ISBN:		0048-9697 (Print) 0048-9697 (Linking)
Abstract:		"An estimation of the magnitude of non-methane volatile organic compounds (NMVOCs) emitted by vegetation in Catalonia (NE of the Iberian Peninsula, Spain), in addition to their superficial and temporal distribution, is presented for policy and scientific (photochemical modelling) purposes. It was developed for the year 2000, for different time resolutions (hourly, daily, monthly and annual) and using a high-resolution land-use map (1-km2 squared cells). Several meteorological surface stations provided air temperature and solar radiation data. An adjusted mathematical emission model taking account of Catalonia's conditions was built into a geographic information system (GIS) software. This estimation uses the latest information, mainly relating to: (1) emission factors; (2) better knowledge of the composition of Catalonia's forest cover; and (3) better knowledge of the particular emission behaviour of some Mediterranean vegetal species. Results depict an annual cycle with increasing values in the March-April period with the highest emissions in July-August, followed by a decrease in October-November. Annual biogenic NMVOCs emissions reach 46.9 kt, with monoterpenes the most abundant species (24.7 kt), followed by other biogenic volatile organic compounds (e.g. alcohols, aldehydes and acetone) (16.3 kt), and isoprene (5.9 kt). These compounds signify 52%, 35% and 13%, respectively, of total emission estimates. Peak hourly total emission for a winter day could be less than 10% of the corresponding value for a summer day"
Keywords:		"Environmental Monitoring Forecasting *Geographic Information Systems Mediterranean Region *Models, Theoretical Organic Chemicals/*analysis *Plants Seasons Spain Volatilization;"
Notes:		"MedlineParra, R Gasso, S Baldasano, J M eng Research Support, Non-U.S. Gov't Netherlands 2004/07/21 Sci Total Environ. 2004 Aug 15; 329(1-3):241-59. doi: 10.1016/j.scitotenv.2004.03.005"