Measurements of isoprene nitrates above a forest canopy

John W. Grossenbacher; Tara Couch; Paul B. Shepson; Troy Thornberry; Maria Witmer-Rich; Mary Anne Carroll; Ian Faloona; Dave Tan; William Brune; Kristi Ostling; Steven Bertman

doi:10.1029/2001JD900029

Measurements of isoprene nitrates above a forest canopy

John W. Grossenbacher, Tara Couch, Paul B. Shepson, Troy Thornberry, Maria Witmer-Rich, Mary Anne Carroll, Ian Faloona, Dave Tan, William Brune, Kristi Ostling, Steven Bertman

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Measurements of atmospheric organic nitrates derived from isoprene, i.e., "isoprene nitrates", were conducted from July 14 to August 19, 1998, as part of the 1998 summer intensive measurement campaign of the Program for Research on Oxidants: PHotochemistry, Emissions, and. Transport (PROPHET) at the University of Michigan Biological Station in Pellston, Michigan. The measurements were conducted using on-line chromatography in conjunction with a nitrate-selective detection scheme. Measured concentrations of isoprene nitrates ranged from 0.5 parts per trillion (ppt), the detection limit of the method employed, to 35 ppt. In this paper we discuss the contribution of the isoprene nitrates to NO_y, which was typically 0.5 - 1.5% of total odd nitrogen, but up to ∼4% for well-aged air. Concentrations of isoprene nitrates exhibited a strong diurnal variation consistent with their expected chemical and physical removal rates. In this work we also discuss the chemistry of the precursor peroxy radicals and the NO_x dependence of isoprene nitrate formation.

Original language	English (US)
Article number	2001JD900029
Pages (from-to)	24429-24438
Number of pages	10
Journal	Journal of Geophysical Research Atmospheres
Volume	106
Issue number	D20
DOIs	https://doi.org/10.1029/2001JD900029
State	Published - Oct 27 2001

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Materials Chemistry
Polymers and Plastics
Physical and Theoretical Chemistry

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10.1029/2001JD900029

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title = "Measurements of isoprene nitrates above a forest canopy",

abstract = "Measurements of atmospheric organic nitrates derived from isoprene, i.e., {"}isoprene nitrates{"}, were conducted from July 14 to August 19, 1998, as part of the 1998 summer intensive measurement campaign of the Program for Research on Oxidants: PHotochemistry, Emissions, and. Transport (PROPHET) at the University of Michigan Biological Station in Pellston, Michigan. The measurements were conducted using on-line chromatography in conjunction with a nitrate-selective detection scheme. Measured concentrations of isoprene nitrates ranged from 0.5 parts per trillion (ppt), the detection limit of the method employed, to 35 ppt. In this paper we discuss the contribution of the isoprene nitrates to NOy, which was typically 0.5 - 1.5% of total odd nitrogen, but up to ∼4% for well-aged air. Concentrations of isoprene nitrates exhibited a strong diurnal variation consistent with their expected chemical and physical removal rates. In this work we also discuss the chemistry of the precursor peroxy radicals and the NOx dependence of isoprene nitrate formation.",

author = "Grossenbacher, {John W.} and Tara Couch and Shepson, {Paul B.} and Troy Thornberry and Maria Witmer-Rich and Carroll, {Mary Anne} and Ian Faloona and Dave Tan and William Brune and Kristi Ostling and Steven Bertman",

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T1 - Measurements of isoprene nitrates above a forest canopy

AU - Grossenbacher, John W.

AU - Couch, Tara

AU - Shepson, Paul B.

AU - Thornberry, Troy

AU - Witmer-Rich, Maria

AU - Carroll, Mary Anne

AU - Faloona, Ian

AU - Tan, Dave

AU - Brune, William

AU - Ostling, Kristi

AU - Bertman, Steven

PY - 2001/10/27

Y1 - 2001/10/27

N2 - Measurements of atmospheric organic nitrates derived from isoprene, i.e., "isoprene nitrates", were conducted from July 14 to August 19, 1998, as part of the 1998 summer intensive measurement campaign of the Program for Research on Oxidants: PHotochemistry, Emissions, and. Transport (PROPHET) at the University of Michigan Biological Station in Pellston, Michigan. The measurements were conducted using on-line chromatography in conjunction with a nitrate-selective detection scheme. Measured concentrations of isoprene nitrates ranged from 0.5 parts per trillion (ppt), the detection limit of the method employed, to 35 ppt. In this paper we discuss the contribution of the isoprene nitrates to NOy, which was typically 0.5 - 1.5% of total odd nitrogen, but up to ∼4% for well-aged air. Concentrations of isoprene nitrates exhibited a strong diurnal variation consistent with their expected chemical and physical removal rates. In this work we also discuss the chemistry of the precursor peroxy radicals and the NOx dependence of isoprene nitrate formation.

AB - Measurements of atmospheric organic nitrates derived from isoprene, i.e., "isoprene nitrates", were conducted from July 14 to August 19, 1998, as part of the 1998 summer intensive measurement campaign of the Program for Research on Oxidants: PHotochemistry, Emissions, and. Transport (PROPHET) at the University of Michigan Biological Station in Pellston, Michigan. The measurements were conducted using on-line chromatography in conjunction with a nitrate-selective detection scheme. Measured concentrations of isoprene nitrates ranged from 0.5 parts per trillion (ppt), the detection limit of the method employed, to 35 ppt. In this paper we discuss the contribution of the isoprene nitrates to NOy, which was typically 0.5 - 1.5% of total odd nitrogen, but up to ∼4% for well-aged air. Concentrations of isoprene nitrates exhibited a strong diurnal variation consistent with their expected chemical and physical removal rates. In this work we also discuss the chemistry of the precursor peroxy radicals and the NOx dependence of isoprene nitrate formation.

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Measurements of isoprene nitrates above a forest canopy

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