Spatial and temporal variations of PAMS VOCs in the northeast

Conference · Wed Dec 31 04:00:00 EST 1997

OSTI ID:617793

Main, H H; Roberts, P T; Haste, T L ^[1]

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1. Sonoma Technology, Inc., Santa Rosa, CA (United States)

The effect of precursor pollutants on the formation and fate of ozone is of major concern in the Northeastern US. Hydrocarbon and carbonyl compounds measured at 15 Photochemical Assessment Monitoring Station (PAMS) sites in the Northeast are being investigated as a part of a data analysis effort sponsored by the Coordinating Research Council. One of the objectives of the volatile organic compound (VOC) analyses is to develop an understanding of the variability, spatial patterns, and diurnal patterns across the Northeast. This understanding is important for assessing transport of ozone and precursors, assessing model inputs and results, evaluating emission inventories, and assessing the efficacy of VOC/NO{sub x} controls. Analyses discussed in this paper include preliminary investigations of the spatial and temporal variation in isoprene concentrations, primarily associated with biogenic emissions; examination of ratios of species with different reactivity rates for temporal and spatial trends; and investigation of key differences among sites regarding speciation, relative age, and relative reactivity of the VOC to obtain clues into transport processes and emission sources.

• OSTI ID: 617793
• Report Number(s): CONF-9704195--
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AIR POLLUTION MONITORING
ATMOSPHERIC CHEMISTRY
DATA ANALYSIS
GAS CHROMATOGRAPHY
ISOPRENE
OZONE
POLLUTANTS