Comparisons of modeled and observed isoprene concentrations in southeast Texas

Jihee Song, William Vizuete, Sunghye Chang, David Allen, Yosuke Kimura, Susan Kemball-Cook, Greg Yarwood, Marianthi Anna Kioumourtzoglou, Elliot L Atlas, Armin Hansel, Armin Wisthaler, Elena McDonald-Buller

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Biogenic emissions of hydrocarbons, primarily isoprene, dominate the VOC emission inventory in eastern Texas. Air quality model predictions of isoprene in southeast Texas were evaluated using ground and aircraft measurements collected during the Texas Air Quality Study 2000. The effects of two different vertical mixing schemes on model predictions of isoprene concentrations were also evaluated. The photochemical and biogenic emission estimation models used were the Comprehensive Air Quality Model with Extensions and the Global Biosphere Emissions and Interactions System. Ground level isoprene concentrations predicted by the models showed markedly good agreement with measured diurnal isoprene patterns. The vertical mixing schemes were most influential on surface concentrations, resulting in differences of as much as 270% in modeled isoprene concentrations. The model over predicted observations from airborne canister samples by as much as a factor of two over rural areas, but under predicted observations over urban areas. Modeled isoprene concentrations were also compared with measurements from an airborne Proton Transfer Reaction Mass Spectrometer, and the results indicated under prediction of isoprene by the model over urban areas, but better agreement in rural areas. The impacts of the vertical mixing schemes on isoprene concentrations were less direct aloft than at the surface. The resulting vertical redistribution of isoprene affected transport rates, chemistry, and the accumulation of mass. As a result, differences in concentrations aloft ranged from none to as much as 30%. This study reinforces the challenges of air quality model validation for highly reactive species such as isoprene, and the need for carefully controlled studies of biogenic emissions and chemical processing during different meteorological conditions in regions with spatially heterogeneous land use.

Original languageEnglish (US)
Pages (from-to)1922-1940
Number of pages19
JournalAtmospheric Environment
Volume42
Issue number8
DOIs
StatePublished - Mar 2008

Fingerprint

Isoprene
isoprene
Air quality
biogenic emission
air quality
vertical mixing
rural area
comparison
urban area
prediction
Proton transfer
airborne survey
model validation
emission inventory
Mass spectrometers
Volatile organic compounds
Land use
biosphere
volatile organic compound
spectrometer

Keywords

  • Biogenic inventories
  • CAMx
  • GloBEIS inventory uncertainties
  • Isoprene

ASJC Scopus subject areas

  • Atmospheric Science
  • Environmental Science(all)
  • Pollution

Cite this

Song, J., Vizuete, W., Chang, S., Allen, D., Kimura, Y., Kemball-Cook, S., ... McDonald-Buller, E. (2008). Comparisons of modeled and observed isoprene concentrations in southeast Texas. Atmospheric Environment, 42(8), 1922-1940. https://doi.org/10.1016/j.atmosenv.2007.11.016

Comparisons of modeled and observed isoprene concentrations in southeast Texas. / Song, Jihee; Vizuete, William; Chang, Sunghye; Allen, David; Kimura, Yosuke; Kemball-Cook, Susan; Yarwood, Greg; Kioumourtzoglou, Marianthi Anna; Atlas, Elliot L; Hansel, Armin; Wisthaler, Armin; McDonald-Buller, Elena.

In: Atmospheric Environment, Vol. 42, No. 8, 03.2008, p. 1922-1940.

Research output: Contribution to journalArticle

Song, J, Vizuete, W, Chang, S, Allen, D, Kimura, Y, Kemball-Cook, S, Yarwood, G, Kioumourtzoglou, MA, Atlas, EL, Hansel, A, Wisthaler, A & McDonald-Buller, E 2008, 'Comparisons of modeled and observed isoprene concentrations in southeast Texas', Atmospheric Environment, vol. 42, no. 8, pp. 1922-1940. https://doi.org/10.1016/j.atmosenv.2007.11.016
Song J, Vizuete W, Chang S, Allen D, Kimura Y, Kemball-Cook S et al. Comparisons of modeled and observed isoprene concentrations in southeast Texas. Atmospheric Environment. 2008 Mar;42(8):1922-1940. https://doi.org/10.1016/j.atmosenv.2007.11.016
Song, Jihee ; Vizuete, William ; Chang, Sunghye ; Allen, David ; Kimura, Yosuke ; Kemball-Cook, Susan ; Yarwood, Greg ; Kioumourtzoglou, Marianthi Anna ; Atlas, Elliot L ; Hansel, Armin ; Wisthaler, Armin ; McDonald-Buller, Elena. / Comparisons of modeled and observed isoprene concentrations in southeast Texas. In: Atmospheric Environment. 2008 ; Vol. 42, No. 8. pp. 1922-1940.
@article{70b1e8962ff44ea487c0a61892db9bbe,
title = "Comparisons of modeled and observed isoprene concentrations in southeast Texas",
abstract = "Biogenic emissions of hydrocarbons, primarily isoprene, dominate the VOC emission inventory in eastern Texas. Air quality model predictions of isoprene in southeast Texas were evaluated using ground and aircraft measurements collected during the Texas Air Quality Study 2000. The effects of two different vertical mixing schemes on model predictions of isoprene concentrations were also evaluated. The photochemical and biogenic emission estimation models used were the Comprehensive Air Quality Model with Extensions and the Global Biosphere Emissions and Interactions System. Ground level isoprene concentrations predicted by the models showed markedly good agreement with measured diurnal isoprene patterns. The vertical mixing schemes were most influential on surface concentrations, resulting in differences of as much as 270{\%} in modeled isoprene concentrations. The model over predicted observations from airborne canister samples by as much as a factor of two over rural areas, but under predicted observations over urban areas. Modeled isoprene concentrations were also compared with measurements from an airborne Proton Transfer Reaction Mass Spectrometer, and the results indicated under prediction of isoprene by the model over urban areas, but better agreement in rural areas. The impacts of the vertical mixing schemes on isoprene concentrations were less direct aloft than at the surface. The resulting vertical redistribution of isoprene affected transport rates, chemistry, and the accumulation of mass. As a result, differences in concentrations aloft ranged from none to as much as 30{\%}. This study reinforces the challenges of air quality model validation for highly reactive species such as isoprene, and the need for carefully controlled studies of biogenic emissions and chemical processing during different meteorological conditions in regions with spatially heterogeneous land use.",
keywords = "Biogenic inventories, CAMx, GloBEIS inventory uncertainties, Isoprene",
author = "Jihee Song and William Vizuete and Sunghye Chang and David Allen and Yosuke Kimura and Susan Kemball-Cook and Greg Yarwood and Kioumourtzoglou, {Marianthi Anna} and Atlas, {Elliot L} and Armin Hansel and Armin Wisthaler and Elena McDonald-Buller",
year = "2008",
month = "3",
doi = "10.1016/j.atmosenv.2007.11.016",
language = "English (US)",
volume = "42",
pages = "1922--1940",
journal = "Atmospheric Environment",
issn = "1352-2310",
publisher = "Pergamon Press Ltd.",
number = "8",

}

TY - JOUR

T1 - Comparisons of modeled and observed isoprene concentrations in southeast Texas

AU - Song, Jihee

AU - Vizuete, William

AU - Chang, Sunghye

AU - Allen, David

AU - Kimura, Yosuke

AU - Kemball-Cook, Susan

AU - Yarwood, Greg

AU - Kioumourtzoglou, Marianthi Anna

AU - Atlas, Elliot L

AU - Hansel, Armin

AU - Wisthaler, Armin

AU - McDonald-Buller, Elena

PY - 2008/3

Y1 - 2008/3

N2 - Biogenic emissions of hydrocarbons, primarily isoprene, dominate the VOC emission inventory in eastern Texas. Air quality model predictions of isoprene in southeast Texas were evaluated using ground and aircraft measurements collected during the Texas Air Quality Study 2000. The effects of two different vertical mixing schemes on model predictions of isoprene concentrations were also evaluated. The photochemical and biogenic emission estimation models used were the Comprehensive Air Quality Model with Extensions and the Global Biosphere Emissions and Interactions System. Ground level isoprene concentrations predicted by the models showed markedly good agreement with measured diurnal isoprene patterns. The vertical mixing schemes were most influential on surface concentrations, resulting in differences of as much as 270% in modeled isoprene concentrations. The model over predicted observations from airborne canister samples by as much as a factor of two over rural areas, but under predicted observations over urban areas. Modeled isoprene concentrations were also compared with measurements from an airborne Proton Transfer Reaction Mass Spectrometer, and the results indicated under prediction of isoprene by the model over urban areas, but better agreement in rural areas. The impacts of the vertical mixing schemes on isoprene concentrations were less direct aloft than at the surface. The resulting vertical redistribution of isoprene affected transport rates, chemistry, and the accumulation of mass. As a result, differences in concentrations aloft ranged from none to as much as 30%. This study reinforces the challenges of air quality model validation for highly reactive species such as isoprene, and the need for carefully controlled studies of biogenic emissions and chemical processing during different meteorological conditions in regions with spatially heterogeneous land use.

AB - Biogenic emissions of hydrocarbons, primarily isoprene, dominate the VOC emission inventory in eastern Texas. Air quality model predictions of isoprene in southeast Texas were evaluated using ground and aircraft measurements collected during the Texas Air Quality Study 2000. The effects of two different vertical mixing schemes on model predictions of isoprene concentrations were also evaluated. The photochemical and biogenic emission estimation models used were the Comprehensive Air Quality Model with Extensions and the Global Biosphere Emissions and Interactions System. Ground level isoprene concentrations predicted by the models showed markedly good agreement with measured diurnal isoprene patterns. The vertical mixing schemes were most influential on surface concentrations, resulting in differences of as much as 270% in modeled isoprene concentrations. The model over predicted observations from airborne canister samples by as much as a factor of two over rural areas, but under predicted observations over urban areas. Modeled isoprene concentrations were also compared with measurements from an airborne Proton Transfer Reaction Mass Spectrometer, and the results indicated under prediction of isoprene by the model over urban areas, but better agreement in rural areas. The impacts of the vertical mixing schemes on isoprene concentrations were less direct aloft than at the surface. The resulting vertical redistribution of isoprene affected transport rates, chemistry, and the accumulation of mass. As a result, differences in concentrations aloft ranged from none to as much as 30%. This study reinforces the challenges of air quality model validation for highly reactive species such as isoprene, and the need for carefully controlled studies of biogenic emissions and chemical processing during different meteorological conditions in regions with spatially heterogeneous land use.

KW - Biogenic inventories

KW - CAMx

KW - GloBEIS inventory uncertainties

KW - Isoprene

UR - http://www.scopus.com/inward/record.url?scp=39149105951&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=39149105951&partnerID=8YFLogxK

U2 - 10.1016/j.atmosenv.2007.11.016

DO - 10.1016/j.atmosenv.2007.11.016

M3 - Article

AN - SCOPUS:39149105951

VL - 42

SP - 1922

EP - 1940

JO - Atmospheric Environment

JF - Atmospheric Environment

SN - 1352-2310

IS - 8

ER -