Emission estimates of HCFCs and HFCs in California from the 2010 CalNex study

Barbara Barletta, Marc Carreras-Sospedra, Alex Cohan, Paul Nissenson, Donald Dabdub, Simone Meinardi, Elliot L Atlas, Rich Lueb, John S. Holloway, Thomas B. Ryerson, James Pederson, Richard A. Vancuren, Donald R. Blake

Research output: Contribution to journalArticle

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Abstract

The CalNex 2010 (California Research at the Nexus of Air Quality and Climate Change) study was designed to evaluate the chemical composition of air masses over key source regions in California. During May to June 2010, air samples were collected on board a National Oceanic and Atmospheric Administration (NOAA) WP-3D aircraft over the South Coast Air Basin of California (SoCAB) and the Central Valley (CV). This paper analyzes six effective greenhouse gases - chlorodifluoromethane (HCFC-22), 1,1-dichloro-1-fluoroethane (HCFC-141b), 1-chloro-1,1-difluoroethane (HCFC-142b), 2-chloro-1,1,1,2-tetrafluoroethane (HCFC-124), 1,1,1,2- tetrafluoroethane (HFC-134a), and 1,1-difluoroethane (HFC-152a) - providing the most comprehensive characterization of chlorofluorocarbon (CFC) replacement compound emissions in California. Concentrations of measured HCFCs and HFCs are enhanced greatly throughout the SoCAB and CV, with highest levels observed in the SoCAB: 310 ± 92 pptv for HCFC-22, 30.7 ± 18.6 pptv for HCFC-141b, 22.9 ± 2.0 pptv for HCFC-142b, 4.86 ± 2.56 pptv for HCFC-124, 109 ± 46.4 pptv for HFC-134a, and 91.2 ± 63.9 pptv for HFC-152a. Annual emission rates are estimated for all six compounds in the SoCAB using the measured halocarbon to carbon monoxide (CO) mixing ratios and CO emissions inventories. Emission rates of 3.05 ± 0.70 Gg for HCFC-22, 0.27 ± 0.07 Gg for HCFC-141b, 0.06 ± 0.01 Gg for HCFC-142b, 0.11 ± 0.03 Gg for HCFC-124, 1.89 ± 0.43 Gg for HFC-134a, and 1.94 ± 0.45 Gg for HFC-152b for the year 2010 are calculated for the SoCAB. These emissions are extrapolated from the SoCAB region to the state of California using population data. Results from this study provide a baseline emission rate that will help future studies determine if HCFC and HFC mitigation strategies are successful. Key PointsHCFC and HFC emissions are calculated for the year 2010 for the SoCABEmissions are extrapolated to the state of CaliforniaEmissions are calculated using CalNex field measurements

Original languageEnglish (US)
Pages (from-to)2019-2030
Number of pages12
JournalJournal of Geophysical Research C: Oceans
Volume118
Issue number4
DOIs
StatePublished - Feb 27 2013

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norflurane
hydrochlorofluorocarbon
hydrofluorocarbon
1,1,1,2-tetrafluoro-2-chloroethane
Coastal zones
coasts
estimates
Air
air
Carbon Monoxide
coast
basin
carbon monoxide
Halocarbons
Chlorofluorocarbons
valleys
halocarbons
chlorofluorocarbons
Air quality
Greenhouse gases

Keywords

  • gas chromatography
  • Halocarbon emissions
  • hydrochlorofluorocarbons
  • hydrofluorocarbons
  • Montreal Protocol

ASJC Scopus subject areas

  • Atmospheric Science
  • Geophysics
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science

Cite this

Barletta, B., Carreras-Sospedra, M., Cohan, A., Nissenson, P., Dabdub, D., Meinardi, S., ... Blake, D. R. (2013). Emission estimates of HCFCs and HFCs in California from the 2010 CalNex study. Journal of Geophysical Research C: Oceans, 118(4), 2019-2030. https://doi.org/10.1002/jgrd.50209

Emission estimates of HCFCs and HFCs in California from the 2010 CalNex study. / Barletta, Barbara; Carreras-Sospedra, Marc; Cohan, Alex; Nissenson, Paul; Dabdub, Donald; Meinardi, Simone; Atlas, Elliot L; Lueb, Rich; Holloway, John S.; Ryerson, Thomas B.; Pederson, James; Vancuren, Richard A.; Blake, Donald R.

In: Journal of Geophysical Research C: Oceans, Vol. 118, No. 4, 27.02.2013, p. 2019-2030.

Research output: Contribution to journalArticle

Barletta, B, Carreras-Sospedra, M, Cohan, A, Nissenson, P, Dabdub, D, Meinardi, S, Atlas, EL, Lueb, R, Holloway, JS, Ryerson, TB, Pederson, J, Vancuren, RA & Blake, DR 2013, 'Emission estimates of HCFCs and HFCs in California from the 2010 CalNex study', Journal of Geophysical Research C: Oceans, vol. 118, no. 4, pp. 2019-2030. https://doi.org/10.1002/jgrd.50209
Barletta B, Carreras-Sospedra M, Cohan A, Nissenson P, Dabdub D, Meinardi S et al. Emission estimates of HCFCs and HFCs in California from the 2010 CalNex study. Journal of Geophysical Research C: Oceans. 2013 Feb 27;118(4):2019-2030. https://doi.org/10.1002/jgrd.50209
Barletta, Barbara ; Carreras-Sospedra, Marc ; Cohan, Alex ; Nissenson, Paul ; Dabdub, Donald ; Meinardi, Simone ; Atlas, Elliot L ; Lueb, Rich ; Holloway, John S. ; Ryerson, Thomas B. ; Pederson, James ; Vancuren, Richard A. ; Blake, Donald R. / Emission estimates of HCFCs and HFCs in California from the 2010 CalNex study. In: Journal of Geophysical Research C: Oceans. 2013 ; Vol. 118, No. 4. pp. 2019-2030.
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abstract = "The CalNex 2010 (California Research at the Nexus of Air Quality and Climate Change) study was designed to evaluate the chemical composition of air masses over key source regions in California. During May to June 2010, air samples were collected on board a National Oceanic and Atmospheric Administration (NOAA) WP-3D aircraft over the South Coast Air Basin of California (SoCAB) and the Central Valley (CV). This paper analyzes six effective greenhouse gases - chlorodifluoromethane (HCFC-22), 1,1-dichloro-1-fluoroethane (HCFC-141b), 1-chloro-1,1-difluoroethane (HCFC-142b), 2-chloro-1,1,1,2-tetrafluoroethane (HCFC-124), 1,1,1,2- tetrafluoroethane (HFC-134a), and 1,1-difluoroethane (HFC-152a) - providing the most comprehensive characterization of chlorofluorocarbon (CFC) replacement compound emissions in California. Concentrations of measured HCFCs and HFCs are enhanced greatly throughout the SoCAB and CV, with highest levels observed in the SoCAB: 310 ± 92 pptv for HCFC-22, 30.7 ± 18.6 pptv for HCFC-141b, 22.9 ± 2.0 pptv for HCFC-142b, 4.86 ± 2.56 pptv for HCFC-124, 109 ± 46.4 pptv for HFC-134a, and 91.2 ± 63.9 pptv for HFC-152a. Annual emission rates are estimated for all six compounds in the SoCAB using the measured halocarbon to carbon monoxide (CO) mixing ratios and CO emissions inventories. Emission rates of 3.05 ± 0.70 Gg for HCFC-22, 0.27 ± 0.07 Gg for HCFC-141b, 0.06 ± 0.01 Gg for HCFC-142b, 0.11 ± 0.03 Gg for HCFC-124, 1.89 ± 0.43 Gg for HFC-134a, and 1.94 ± 0.45 Gg for HFC-152b for the year 2010 are calculated for the SoCAB. These emissions are extrapolated from the SoCAB region to the state of California using population data. Results from this study provide a baseline emission rate that will help future studies determine if HCFC and HFC mitigation strategies are successful. Key PointsHCFC and HFC emissions are calculated for the year 2010 for the SoCABEmissions are extrapolated to the state of CaliforniaEmissions are calculated using CalNex field measurements",
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T1 - Emission estimates of HCFCs and HFCs in California from the 2010 CalNex study

AU - Barletta, Barbara

AU - Carreras-Sospedra, Marc

AU - Cohan, Alex

AU - Nissenson, Paul

AU - Dabdub, Donald

AU - Meinardi, Simone

AU - Atlas, Elliot L

AU - Lueb, Rich

AU - Holloway, John S.

AU - Ryerson, Thomas B.

AU - Pederson, James

AU - Vancuren, Richard A.

AU - Blake, Donald R.

PY - 2013/2/27

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N2 - The CalNex 2010 (California Research at the Nexus of Air Quality and Climate Change) study was designed to evaluate the chemical composition of air masses over key source regions in California. During May to June 2010, air samples were collected on board a National Oceanic and Atmospheric Administration (NOAA) WP-3D aircraft over the South Coast Air Basin of California (SoCAB) and the Central Valley (CV). This paper analyzes six effective greenhouse gases - chlorodifluoromethane (HCFC-22), 1,1-dichloro-1-fluoroethane (HCFC-141b), 1-chloro-1,1-difluoroethane (HCFC-142b), 2-chloro-1,1,1,2-tetrafluoroethane (HCFC-124), 1,1,1,2- tetrafluoroethane (HFC-134a), and 1,1-difluoroethane (HFC-152a) - providing the most comprehensive characterization of chlorofluorocarbon (CFC) replacement compound emissions in California. Concentrations of measured HCFCs and HFCs are enhanced greatly throughout the SoCAB and CV, with highest levels observed in the SoCAB: 310 ± 92 pptv for HCFC-22, 30.7 ± 18.6 pptv for HCFC-141b, 22.9 ± 2.0 pptv for HCFC-142b, 4.86 ± 2.56 pptv for HCFC-124, 109 ± 46.4 pptv for HFC-134a, and 91.2 ± 63.9 pptv for HFC-152a. Annual emission rates are estimated for all six compounds in the SoCAB using the measured halocarbon to carbon monoxide (CO) mixing ratios and CO emissions inventories. Emission rates of 3.05 ± 0.70 Gg for HCFC-22, 0.27 ± 0.07 Gg for HCFC-141b, 0.06 ± 0.01 Gg for HCFC-142b, 0.11 ± 0.03 Gg for HCFC-124, 1.89 ± 0.43 Gg for HFC-134a, and 1.94 ± 0.45 Gg for HFC-152b for the year 2010 are calculated for the SoCAB. These emissions are extrapolated from the SoCAB region to the state of California using population data. Results from this study provide a baseline emission rate that will help future studies determine if HCFC and HFC mitigation strategies are successful. Key PointsHCFC and HFC emissions are calculated for the year 2010 for the SoCABEmissions are extrapolated to the state of CaliforniaEmissions are calculated using CalNex field measurements

AB - The CalNex 2010 (California Research at the Nexus of Air Quality and Climate Change) study was designed to evaluate the chemical composition of air masses over key source regions in California. During May to June 2010, air samples were collected on board a National Oceanic and Atmospheric Administration (NOAA) WP-3D aircraft over the South Coast Air Basin of California (SoCAB) and the Central Valley (CV). This paper analyzes six effective greenhouse gases - chlorodifluoromethane (HCFC-22), 1,1-dichloro-1-fluoroethane (HCFC-141b), 1-chloro-1,1-difluoroethane (HCFC-142b), 2-chloro-1,1,1,2-tetrafluoroethane (HCFC-124), 1,1,1,2- tetrafluoroethane (HFC-134a), and 1,1-difluoroethane (HFC-152a) - providing the most comprehensive characterization of chlorofluorocarbon (CFC) replacement compound emissions in California. Concentrations of measured HCFCs and HFCs are enhanced greatly throughout the SoCAB and CV, with highest levels observed in the SoCAB: 310 ± 92 pptv for HCFC-22, 30.7 ± 18.6 pptv for HCFC-141b, 22.9 ± 2.0 pptv for HCFC-142b, 4.86 ± 2.56 pptv for HCFC-124, 109 ± 46.4 pptv for HFC-134a, and 91.2 ± 63.9 pptv for HFC-152a. Annual emission rates are estimated for all six compounds in the SoCAB using the measured halocarbon to carbon monoxide (CO) mixing ratios and CO emissions inventories. Emission rates of 3.05 ± 0.70 Gg for HCFC-22, 0.27 ± 0.07 Gg for HCFC-141b, 0.06 ± 0.01 Gg for HCFC-142b, 0.11 ± 0.03 Gg for HCFC-124, 1.89 ± 0.43 Gg for HFC-134a, and 1.94 ± 0.45 Gg for HFC-152b for the year 2010 are calculated for the SoCAB. These emissions are extrapolated from the SoCAB region to the state of California using population data. Results from this study provide a baseline emission rate that will help future studies determine if HCFC and HFC mitigation strategies are successful. Key PointsHCFC and HFC emissions are calculated for the year 2010 for the SoCABEmissions are extrapolated to the state of CaliforniaEmissions are calculated using CalNex field measurements

KW - gas chromatography

KW - Halocarbon emissions

KW - hydrochlorofluorocarbons

KW - hydrofluorocarbons

KW - Montreal Protocol

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U2 - 10.1002/jgrd.50209

DO - 10.1002/jgrd.50209

M3 - Article

VL - 118

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JO - Journal of Geophysical Research: Oceans

JF - Journal of Geophysical Research: Oceans

SN - 2169-9275

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