We have noted a computational error in the calculation of the averaged Fractional Release Factors (FRFs) relative to the averaged FRF of CFCl3 (CFC-11). ..

Braß, M

Bönisch, H

Engel, A

Laube, JC

Möbius, T

Röckmann, T

Sturges, WT

English

Laube, Johannes Christian

Engel, Andreas

Bönisch, Harald

Möbius, Tanja

Sturges, William T.

Braß, Marc

Röckmann, Thomas

Hochschulschriftenserver - Universität Frankfurt am Main

A new formulation of equivalent effective stratospheric chlorine (EESC),

Aeronomy of the middle atmosphere, 2nd edition,

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Chlorine budget and partitioning during SOLVE,

Chloroﬂuorocarbons in the environment,

Contribution of very short-lived organic substances to stratospheric chlorine and bromine in the tropics - a case study,

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Halocarbon scenarios, ozone depletion potentials, and global warming potentials, Chapter 8 in World Meteorological Organization: Scientiﬁc assessment of ozone depletion: 2006, Global Ozone Research and Monitoring Project

Halogenated Long-lived Compounds, Scientiﬁc assessment of ozone depletion: 2006, Global Ozone Research and Monitoring Project

Hemispheric asymmetries in water vapour and inferences about transport in the lower stratosphere,

Intercomparison of balloon borne cryogenic whole air samplers,

Interrelationships between mixing ratios of long-lived stratospheric constituents,

Measurements of halogenated organic compounds near the tropical tropopause,

On the evaluation of ozone depletion potentials,

Relationship of loss, mean age of air and the distribution of CFCs to stratospheric circulation and implications for atmospheric lifetimes,

Stratospheric CFCl3, CF2Cl2, and N2O height proﬁle measurements at several latitudes,

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T.: Probing stratospheric transport and chemistry with new balloon and aircraftobservationsofthemeridionalandverticalN2Oisotopedistribution,

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Three-dimensional simulations of longslived tracers using winds from MACCM2,

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www.atmos-chem-phys.net/10/1093/2010/J. C. Laube et al.: Fractional release factors of long-lived halogenated organic compounds 1103

Corrigendum to "Fractional release factors of long-lived halogenated organic compounds in the tropical stratosphere" published in Atmos. Chem. Phys., 10, 1093–1103, 2010

Fractional release factors (FRFs) of organic trace gases are time-independent quantities that influence the calculation of Global Warming Potentials and Ozone Depletion Potentials. We present the first set of vertically resolved FRFs for 15 long-lived halocarbons in the tropical stratosphere up to 34 km altitude. They were calculated from measurements on air samples collected on board balloons and a high altitude aircraft. We compare the derived dependencies of FRFs on the mean stratospheric transit times (the so-called mean ages of air) with similarly derived FRFs originating from measurements at higher latitudes and find significant differences. Moreover a comparison with averaged FRFs currently used by the World Meteorological Organisation revealed the limitations of these measures due to their observed vertical and latitudinal variability. The presented data set could be used to improve future ozone level and climate projections

Laube, J.C.

Engel, A.

Bönisch, H.

Möbius, T.

Sturges, W.T.

Brass, M.

Rockmann, T.

Marine and Atmospheric Research

Dep Natuurkunde

Sub Atmospheric physics and chemistry

NARCIS 

Laube, J. C.

Sturges, W. T.

Braß, M.

Röckmann, T.

University of East Anglia digital repository

Atmos. Chem. Phys., 10, 4975, 2010www.atmos-chem-phys.net/10/4975/2010/doi:10.5194/acp-10-4975-2010© Author(s) 2010. CC Attribution 3.0 License.AtmosphericChemistryand PhysicsCorrigendum to“Fractional release factors of long-lived halogenated organiccompounds in the tropical stratosphere” published in Atmos. Chem.Phys., 10, 1093–1103, 2010J. C. Laube1,2, A. Engel1, H. Bo¨nisch1, T. Mo¨bius1, W. T. Sturges2, M. Braß3, and T. Ro¨ckmann31Institute for Atmospheric and Environmental Sciences, University of Frankfurt, Frankfurt, Germany2School of Environmental Sciences, University of East Anglia, Norwich, UK3Institute for Marine and Atmospheric Research, Utrecht University, Utrecht, The NetherlandsWe have noted a computational error in the calculation ofthe averaged Fractional Release Factors (FRFs) relative tothe averaged FRF of CFCl3 (CFC-11). This only affects theaveraged values shown in Table 3 (absolute values as wellas 1σ uncertainties). It does not affect any of the main con-clusions of the paper. The updated version of this table canbe found below. All changes in averaged FRF values arewithin the assigned uncertainty range. Three of the four com-pounds that showed significantly different FRFs as comparedto those currently used by the WMO (Daniel and Velders,2007) are still in disagreement with the WMO value, namelyCFC-114, HCFC-22 and HCFC-142b. The FRF of H-2402now agrees with the WMO value due to an increase in theuncertainty limit of the revised FRF for this compound. Forall other compounds we still find agreement with WMO.ReferencesDaniel, J. S., Velders, G. J. M., Douglass, A. R., Forster, P. M. D.,Hauglustaine, D. A., Isaksen, I. S. A., Kuijpers, L. J. M., Mc-Culloch, A., and Wallington, T. J., Halocarbon scenarios, ozonedepletion potentials, and global warming potentials, Chapter 8in World Meteorological Organization: Scientific assessment ofozone depletion: 2006, Global Ozone Research and MonitoringProject – Report No. 50, Geneva, 2007.Correspondence to: J. C. Laube(j.laube@uea.ac.uk)Table 1. Comparison of averaged FRFs relative to the averagedFRF of CFCl3 (CFC-11) in the tropics with current WMO valuesthat are based on observations at mid and high latitudes (see Table 8-1 of Daniel and Velders, 2007). The stated tropical errors do notinclude measurement or calculation uncertainties but represent onlythe 1σ variability of the FRF within the mean age range used foraveraging. The bold numbers are significantly different from thosepresented in Daniel and Velders, 2007.mean FRF relative toCompound tropical mean FRF CFC-11 (from Danielrelative to CFC-11∗ and Velders, 2007)CFC-12 0.49±0.23 0.60CFC-11∗∗ 0.74±0.28 0.55CFC-113 0.64±0.20 0.75CFC-114 0.13±0.06 0.28±0.02CFC-115 0.04±0.05 n.a.CFC-114a 0.60±0.31 n.a.HCFC-22 0.22±0.07 0.35HCFC-141b 0.63±0.23 0.72HCFC-142b 0.11±0.07 0.36HCFC-124 0.57±0.11 0.52CH3CCl3 1.20±0.30 1.08CCl4 1.14±0.17 1.06H-1211 1.28±0.41 1.18H-1301 0.79±0.24 0.62H-2402 1.33±0.50 1.22∗ averaged for mean ages between 2.0 to 4.8 years; ∗∗ CFC-11:absolute averaged FRF is given n.a. not available, model derivedvalues were used for ODP calculations.Published by Copernicus Publications on behalf of the European Geosciences Union.

J. C. Laube

A. Engel

H. Bönisch

T. Möbius

W. T. Sturges

M. Braß

T. Röckmann

Directory of Open Access Journals

Atmos. Chem. Phys., 10, 4975, 2010www.atmos-chem-phys.net/10/4975/2010/doi:10.5194/acp-10-4975-2010© Author(s) 2010. CC Attribution 3.0 License.AtmosphericChemistryand PhysicsCorrigendum to“Fractional release factors of long-lived halogenated organiccompounds in the tropical stratosphere” published in Atmos. Chem.Phys., 10, 1093–1103, 2010J. C. Laube1,2, A. Engel1, H. B¨ onisch1, T. M¨ obius1, W. T. Sturges2, M. Braß3, and T. R¨ ockmann31Institute for Atmospheric and Environmental Sciences, University of Frankfurt, Frankfurt, Germany2School of Environmental Sciences, University of East Anglia, Norwich, UK3Institute for Marine and Atmospheric Research, Utrecht University, Utrecht, The NetherlandsWe have noted a computational error in the calculation ofthe averaged Fractional Release Factors (FRFs) relative tothe averaged FRF of CFCl3 (CFC-11). This only affects theaveraged values shown in Table 3 (absolute values as wellas 1σ uncertainties). It does not affect any of the main con-clusions of the paper. The updated version of this table canbe found below. All changes in averaged FRF values arewithintheassigneduncertaintyrange. Threeofthefourcom-pounds that showed signiﬁcantly different FRFs as comparedto those currently used by the WMO (Daniel and Velders,2007) are still in disagreement with the WMO value, namelyCFC-114, HCFC-22 and HCFC-142b. The FRF of H-2402now agrees with the WMO value due to an increase in theuncertainty limit of the revised FRF for this compound. Forall other compounds we still ﬁnd agreement with WMO.ReferencesDaniel, J. S., Velders, G. J. M., Douglass, A. R., Forster, P. M. D.,Hauglustaine, D. A., Isaksen, I. S. A., Kuijpers, L. J. M., Mc-Culloch, A., and Wallington, T. J., Halocarbon scenarios, ozonedepletion potentials, and global warming potentials, Chapter 8in World Meteorological Organization: Scientiﬁc assessment ofozone depletion: 2006, Global Ozone Research and MonitoringProject – Report No. 50, Geneva, 2007.Correspondence to: J. C. Laube(j.laube@uea.ac.uk)Table 1. Comparison of averaged FRFs relative to the averagedFRF of CFCl3 (CFC-11) in the tropics with current WMO valuesthatarebasedonobservationsatmidandhighlatitudes(seeTable8-1 of Daniel and Velders, 2007). The stated tropical errors do notinclude measurement or calculation uncertainties but represent onlythe 1σ variability of the FRF within the mean age range used foraveraging. The bold numbers are signiﬁcantly different from thosepresented in Daniel and Velders, 2007.mean FRF relative toCompound tropical mean FRF CFC-11 (from Danielrelative to CFC-11∗ and Velders, 2007)CFC-12 0.49±0.23 0.60CFC-11∗∗ 0.74±0.28 0.55CFC-113 0.64±0.20 0.75CFC-114 0.13±0.06 0.28±0.02CFC-115 0.04±0.05 n.a.CFC-114a 0.60±0.31 n.a.HCFC-22 0.22±0.07 0.35HCFC-141b 0.63±0.23 0.72HCFC-142b 0.11±0.07 0.36HCFC-124 0.57±0.11 0.52CH3CCl3 1.20±0.30 1.08CCl4 1.14±0.17 1.06H-1211 1.28±0.41 1.18H-1301 0.79±0.24 0.62H-2402 1.33±0.50 1.22∗ averaged for mean ages between 2.0 to 4.8 years; ∗∗ CFC-11:absolute averaged FRF is given n.a. not available, model derivedvalues were used for ODP calculations.Published by Copernicus Publications on behalf of the European Geosciences Union.

Atmospheric Chemistry and Physics

Utrecht University Repository

Erratum: Fractional release factors of long-lived halogenated organic compounds in the tropical stratosphere (Atmospheric Chemistry and Physics (2010) 10 (1093-1103))

Crossref

Atmos. Chem. Phys., 10, 4975, 2010
www.atmos-chem-phys.net/10/4975/2010/
doi:10.5194/acp-10-4975-2010
© Author(s) 2010. CC Attribution 3.0 License.
Atmospheric
Chemistry
and Physics
Corrigendum to
“Fractional release factors of long-lived halogenated organic
compounds in the tropical stratosphere” published in Atmos. Chem.
Phys., 10, 1093–1103, 2010
J. C. Laube1,2, A. Engel1, H. Bo¨nisch1, T. Mo¨bius1, W. T. Sturges2, M. Braß3, and T. Ro¨ckmann3
1Institute for Atmospheric and Environmental Sciences, University of Frankfurt, Frankfurt, Germany
2School of Environmental Sciences, University of East Anglia, Norwich, UK
3Institute for Marine and Atmospheric Research, Utrecht University, Utrecht, The Netherlands
We have noted a computational error in the calculation of
the averaged Fractional Release Factors (FRFs) relative to
the averaged FRF of CFCl3 (CFC-11). This only affects the
averaged values shown in Table 3 (absolute values as well
as 1σ uncertainties). It does not affect any of the main con-
clusions of the paper. The updated version of this table can
be found below. All changes in averaged FRF values are
within the assigned uncertainty range. Three of the four com-
pounds that showed significantly different FRFs as compared
to those currently used by the WMO (Daniel and Velders,
2007) are still in disagreement with the WMO value, namely
CFC-114, HCFC-22 and HCFC-142b. The FRF of H-2402
now agrees with the WMO value due to an increase in the
uncertainty limit of the revised FRF for this compound. For
all other compounds we still find agreement with WMO.
References
Daniel, J. S., Velders, G. J. M., Douglass, A. R., Forster, P. M. D.,
Hauglustaine, D. A., Isaksen, I. S. A., Kuijpers, L. J. M., Mc-
Culloch, A., and Wallington, T. J., Halocarbon scenarios, ozone
depletion potentials, and global warming potentials, Chapter 8
in World Meteorological Organization: Scientific assessment of
ozone depletion: 2006, Global Ozone Research and Monitoring
Project – Report No. 50, Geneva, 2007.
Correspondence to: J. C. Laube
(j.laube@uea.ac.uk)
Table 1. Comparison of averaged FRFs relative to the averaged
FRF of CFCl3 (CFC-11) in the tropics with current WMO values
that are based on observations at mid and high latitudes (see Table 8-
1 of Daniel and Velders, 2007). The stated tropical errors do not
include measurement or calculation uncertainties but represent only
the 1σ variability of the FRF within the mean age range used for
averaging. The bold numbers are significantly different from those
presented in Daniel and Velders, 2007.
mean FRF relative to
Compound tropical mean FRF CFC-11 (from Daniel
relative to CFC-11∗ and Velders, 2007)
CFC-12 0.49±0.23 0.60
CFC-11∗∗ 0.74±0.28 0.55
CFC-113 0.64±0.20 0.75
CFC-114 0.13±0.06 0.28±0.02
CFC-115 0.04±0.05 n.a.
CFC-114a 0.60±0.31 n.a.
HCFC-22 0.22±0.07 0.35
HCFC-141b 0.63±0.23 0.72
HCFC-142b 0.11±0.07 0.36
HCFC-124 0.57±0.11 0.52
CH3CCl3 1.20±0.30 1.08
CCl4 1.14±0.17 1.06
H-1211 1.28±0.41 1.18
H-1301 0.79±0.24 0.62
H-2402 1.33±0.50 1.22
∗ averaged for mean ages between 2.0 to 4.8 years; ∗∗ CFC-11:
absolute averaged FRF is given n.a. not available, model derived
values were used for ODP calculations.
Published by Copernicus Publications on behalf of the European Geosciences Union.


Corrigendum to &quot;Fractional release factors of long-lived halogenated organic compounds in the tropical stratosphere&quot; published in Atmos. Chem. Phys., 10, 1093–1103, 2010

https://www.atmos-chem-phys.net/10/4975/2010/acp-10-4975-2010.pdf

Corrigendum to "Fractional release factors of long-lived halogenated organic compounds in the tropical stratosphere" published in Atmos. Chem. Phys., 10, 1093–1103, 2010

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