TY - GEN
T1 - Estimation of biogenic emissions of non-methane volatile organic compounds from Catalonia
AU - Parra, R.
AU - Baldasano, J. M.
PY - 2003
Y1 - 2003
N2 - The magnitude, and the superficial and temporal distribution of non-methane volatile organic compounds (NMVOC) emitted by vegetation in Catalonia for the year 2000 have been estimated, as a first step to using a chemical transport model (CTM). Vegetation represents an important source of isoprene, monoterpenes and other volatile organic compounds (OVOC) whose interactions and reactions in lower troposphere are important constituents involved in photochemical pollution episodes. This estimation was developed using a high-resolution land-use map (squared cells of 1 km2) that differentiates twenty-two categories. Air temperature and solar radiation for the year 2000 were collected from different meteorological surface stations. We have used a standard biogenic emissions mathematical model built into a geographic information system (GIS) software. In comparison with other estimations made before, this uses new information, mainly related to some recent emission factors for typical Mediterranean species; and better knowledge of the composition of Catalonia's forest cover; implying therefore a qualitative uncertainty improvement. Results indicate an annual cycle with increasing values in March - April and the highest emissions in July - August followed by a decrease in October - November. Annual biogenic NMVOC emission reaches 55.7 kt, being monoterpenes the most abundant (29.2 kt), followed by OVOC (16.0 kt) and isoprene (10.2 kt), which represent 53, 29 and 18 percent of total emissions, respectively.
AB - The magnitude, and the superficial and temporal distribution of non-methane volatile organic compounds (NMVOC) emitted by vegetation in Catalonia for the year 2000 have been estimated, as a first step to using a chemical transport model (CTM). Vegetation represents an important source of isoprene, monoterpenes and other volatile organic compounds (OVOC) whose interactions and reactions in lower troposphere are important constituents involved in photochemical pollution episodes. This estimation was developed using a high-resolution land-use map (squared cells of 1 km2) that differentiates twenty-two categories. Air temperature and solar radiation for the year 2000 were collected from different meteorological surface stations. We have used a standard biogenic emissions mathematical model built into a geographic information system (GIS) software. In comparison with other estimations made before, this uses new information, mainly related to some recent emission factors for typical Mediterranean species; and better knowledge of the composition of Catalonia's forest cover; implying therefore a qualitative uncertainty improvement. Results indicate an annual cycle with increasing values in March - April and the highest emissions in July - August followed by a decrease in October - November. Annual biogenic NMVOC emission reaches 55.7 kt, being monoterpenes the most abundant (29.2 kt), followed by OVOC (16.0 kt) and isoprene (10.2 kt), which represent 53, 29 and 18 percent of total emissions, respectively.
UR - http://www.scopus.com/inward/record.url?scp=2942691769&partnerID=8YFLogxK
M3 - Contribución a la conferencia
AN - SCOPUS:2942691769
SN - 1853128228
T3 - Advances in Air Pollution
SP - 235
EP - 244
BT - Air Pollution XI
A2 - Longhurst, J.W.S.
A2 - Patania, F.
A2 - Brebbia, C.A.
T2 - Eleventh Interantional Conference on Modelling, Monitoring and Management of Air Pollution, Air Pollution XI
Y2 - 17 September 2003 through 19 September 2003
ER -