Hi Alison,
Thanks for this - it would indeed be useful to have both PFC-14 and methyl chloroform listed in the definitions. Apologies for not spotting these names in the first place, hcc140a in particular I'd never heard of!
Cheers,
Dan
________________________________
Dr Daniel Say
Postdoctoral Research Associate
Atmospheric Chemistry Research Group
School of Chemistry
University of Bristol
Tel: (+44) 117 3317042
________________________________
From: CF-metadata <cf-metadata-bounces at cgd.ucar.edu> on behalf of Alison Pamment - UKRI STFC <alison.pamment at stfc.ac.uk>
Sent: 08 April 2019 17:32:19
To: cf-metadata at cgd.ucar.edu
Subject: Re: [CF-metadata] More trace gas standard names
Dear Dan and Roy,
Thank you both for this set of proposals and the comments.
Roy is correct that mole_fraction_of_pfc14_in_air is a synonym of the existing name mole_fraction_of_carbon_tetrafluoride_in_air. If pfc14 is a commonly used alternative we could list it in the definition in the same way as I'm suggesting for the hcc140a/methyl chloroform names in the other set of proposals. Would that be useful?
Roy has also pointed out that the proposal for mole_fraction_of_pfc318_in_air is duplicated - thanks for spotting that!
The following names are accepted for publication in the standard name table and will be added in this week's update:
mole_fraction_of_pfc116_in_air (Canonical unit: 1)
Definition: 'Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The chemical formula for pfc116 is C2F6. The IUPAC name for pfc116 is hexafluoroethane.
mole_fraction_of_pfc318_in_air (Canonical unit: 1)
Definition: 'Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The chemical formula for pfc318 is c-C4F8. The IUPAC name for pfc318 is octafluorocyclobutane.
mole_fraction_of_nitrogen_trifluoride_in_air (Canonical unit: 1)
Definition: 'Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The chemical formula for nitrogen trifluoride is NF3. Nitrogen trifluoride is the IUPAC name.
mole_fraction_of_hfc227ea_in_air (Canonical unit: 1)
Definition: 'Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The chemical formula for hfc227ea is C3HF7. The IUPAC name for hfc227ea is 1,1,1,2,3,3,3-heptafluoropropane.
mole_fraction_of_hfc245fa_in_air (Canonical unit: 1)
Definition: 'Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The chemical formula for hfc245fa is C3H3F5. The IUPAC name for hfc245fa is 1,1,1,3,3-pentafluoropropane.
mole_fraction_of_hfc4310mee_in_air (Canonical unit: 1)
Definition: 'Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The chemical formula for hfc4310mee is C5H2F10. The IUPAC name for hfc4310mee is 1,1,1,2,2,3,4,5,5,5-decafluoropentane.
mole_fraction_of_hfc365mfc_in_air (Canonical unit: 1)
Definition: 'Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The chemical formula for hfc365mfc is C4H5F5. The IUPAC name for hfc365mfc is 1,1,1,3,3-pentafluorobutane.
mole_fraction_of_hfc236fa_in_air (Canonical unit: 1)
Definition: 'Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The chemical formula for hfc236fa is C3H2F6. The IUPAC name for hfc236fa is 1,1,1,3,3,3-hexafluoropropane.
mole_fraction_of_hcfc124_in_air (Canonical unit: 1)
Definition: 'Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The chemical formula for hcfc124 is C2HClF4. The IUPAC name for hcfc124 is 1-chloro-1,2,2,2-tetrafluoroethane.
mole_fraction_of_sulfuryl_fluoride_in_air (Canonical unit: 1)
Definition: 'Mole fraction is used in the construction mole_fraction_of_X_in_Y, where X is a material constituent of Y. A chemical or biological species denoted by X may be described by a single term such as "nitrogen" or a phrase such as "nox_expressed_as_nitrogen". The chemical formula for sulfuryl fluoride is SO2F2. Sulfuryl fluoride is the IUPAC name.
The following proposal is rejected because it is a synonym of the existing name mole_fraction_of_carbon_tetrafluoride_in_air:
mole_fraction_of_pfc14_in_air (it is proposed to update the definitions of existing carbon tetrafluoride names to list pfc14 as a commonly used name for the same species).
Best wishes,
Alison
-----------------------------------------------------------------------------------------------------------
Alison Pamment Tel: +44 1235 778065
NCAS/Centre for Environmental Data Analysis Email: alison.pamment at stfc.ac.uk
STFC Rutherford Appleton Laboratory
R25, 2.22
Harwell Oxford, Didcot, OX11 0QX, U.K.
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