Isoprene and its oxidation products: Methacrolein and methyl vinyl ketone

Journal Article · Tue Feb 20 04:00:00 EST 1990 · Journal of Geophysical Research; (United States)

DOI:https://doi.org/10.1029/JD095iD02p01871· OSTI ID:5078442

Pierotti, D; Wofsy, S C; Jacob, D ^[1]; Rasmussen, R A ^[2]

---

1. Harvard Univ., Cambridge, MA (United States)
2. Oregon Graduate Center, Beaverton (United States)

The first measurements of methacrolein (MACR) and methyl vinyl ketone (MVK) in the atmosphere are reported. The compounds both show a strong seasonal variation, with a maximum in the summer. The concentrations of MACR and MVK are highly correlated with each other and with the concentration of isoprene, in accord with the expectation that they are the major initial products of isoprene oxidation. However, the observed MACR/MVK ratio does not agree with the model predictions over the range of conditions normally observed in the nonurban continental boundary layer. The authors suggest that this indicates a major gap in the understanding of the photochemistry of hydrocarbons in the nonurban troposphere.

• OSTI ID: 5078442
• Journal Information: Journal of Geophysical Research; (United States), Journal Name: Journal of Geophysical Research; (United States) Vol. 95:D2; ISSN 0148-0227; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ALDEHYDES
ATMOSPHERIC CHEMISTRY
CHEMICAL REACTIONS
CHEMISTRY
CORRELATIONS
DEGASSING
DIENES
EARTH ATMOSPHERE
ECOLOGICAL CONCENTRATION
HYDROCARBONS
ISOPRENE
KETONES
ORGANIC COMPOUNDS
OXIDATION
PHOTOCHEMICAL REACTIONS
PLANTS
POLYENES
RURAL AREAS
SEASONAL VARIATIONS
TROPOSPHERE
VARIATIONS