Flux Measurements of Volatile Organic Compounds from an Urban Landscape
Journal Article
·
· Geophysical Research Letters, 32(20):L20802, doi: 10.1029/2005GL023356
Direct measurements of volatile organic compound (VOC) emissions that include all anthropogenic and biogenic emission sources in urban areas are a missing requirement to evaluate emission inventories and constrain current photochemical modelling practices. Here we demonstrate the use of micrometeorological techniques coupled with fast-response sensors to measure urban VOC fluxes from a neighborhood of Mexico City, where the spatial variability of surface cover and roughness is high. Fluxes of olefins, methanol, acetone, toluene and C2-benzenes were measured and compared with the local gridded emission inventory. VOC fluxes exhibited a clear diurnal pattern with a strong relationship to vehicular traffic. Recent photochemical modeling results suggest that VOC emissions are significantly underestimated in Mexico City1, but the measured VOC fluxes described here indicate that the official emission inventory2 is essentially correct. Thus, other explanations are needed to explain the photochemical modelling results.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 876982
- Report Number(s):
- PNNL-SA-47288; 3386; KP1205030
- Journal Information:
- Geophysical Research Letters, 32(20):L20802, doi: 10.1029/2005GL023356, Journal Name: Geophysical Research Letters, 32(20):L20802, doi: 10.1029/2005GL023356 Journal Issue: 20 Vol. 32; ISSN GPRLAJ; ISSN 0094-8276
- Country of Publication:
- United States
- Language:
- English
Similar Records
Distribution, Magnitudes, Reactivities, Ratios and Diurnal Patterns of Volatile Organic Compounds in the Valley of Mexico During the MCMA 2002 & 2003 Field Campaigns
Volatile organic compound and nitric oxide emissions from corn in the midwestern United States. Interim report, October 1991-October 1992
Source impact quantification of anthropogenic and biogenic emissions on regional ozone in the Mexico-U.S. border area using direct sensitivity analysis
Journal Article
·
Mon Jan 22 23:00:00 EST 2007
· Atmospheric Chemistry and Physics, 7(2):329-353
·
OSTI ID:901465
Volatile organic compound and nitric oxide emissions from corn in the midwestern United States. Interim report, October 1991-October 1992
Technical Report
·
Thu Oct 01 00:00:00 EDT 1992
·
OSTI ID:6624214
Source impact quantification of anthropogenic and biogenic emissions on regional ozone in the Mexico-U.S. border area using direct sensitivity analysis
Conference
·
Thu Jul 01 00:00:00 EDT 1999
·
OSTI ID:20006520