Dear Martin and Angelika,
Thank you for your proposals. Thank you also to Philip and Jonathan for their useful comments in the discussion of these names. I think the molecular hydrogen and dimethyl sulphate names are unproblematic and well defined. The following four names are accepted for inclusion in the standard name table:
tendency_of_atmosphere_mass_content_of_molecular_hydrogen_due_to_emission_from_savanna_and_grassland_fires
tendency_of_atmosphere_mass_content_of_molecular_hydrogen_due_to_emission_from_forest_fires
tendency_of_atmosphere_mass_content_of_dimethyl_sulfide_due_to_emission_from_savanna_and_grassland_fires
tendency_of_atmosphere_mass_content_of_dimethyl_sulfide_due_to_emission_from_forest_fires
all with units of kg m-2 s-1. They will be added in the February update.
Regarding the discussion of nitrogen dioxide and nitrogen monoxide names, I would like to check my understanding of exactly what is now being proposed. There seems to be agreement that it is fine to have nox_expressed_as_nitrogen_monoxide names, so are you in fact proposing that we should add the following eleven names?
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_savanna_and_grassland_fires
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_forest_fires
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_agricultural_production
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_agricultural_waste_burning
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_industrial_processes_and_combustion
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_energy_production_and_distribution
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_land_transport
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_maritime_transport
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_waste_treatment_and_disposal
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_residential_and_commercial_combustion
units: kg m-2 s-1
?
tendency_of_mass_concentration_of_nox_expressed_as_nitrogen_monoxide_in_air_due_to_emission_from_aviation
units: kg m-3 s-1
Are these in addition to the recently added nitrogen_monoxide emission names (i.e. I assume you are not intending the existing names to become aliases of these more recent proposals)?
For nitrogen dioxide I think you are currently sticking with your original two proposals of:
tendency_of_atmosphere_mass_content_of_nitrogen_dioxide_due_to_emission_from_savanna_and_grassland_fires
tendency_of_atmosphere_mass_content_of_nitrogen_dioxide_due_to_emission_from_forest_fires.
Is that correct?
Best wishes,
Alison
------
Alison Pamment Tel: +44 1235 778065
NCAS/British Atmospheric Data Centre Email: alison.pamment at stfc.ac.uk
STFC Rutherford Appleton Laboratory
R25, 2.22
Harwell Oxford, Didcot, OX11 0QX, U.K.
From: CF-metadata [mailto:cf-metadata-bounces at cgd.ucar.edu] On Behalf Of Schultz, Martin
Sent: 03 January 2013 12:04
To: cf-metadata at cgd.ucar.edu
Subject: [CF-metadata] Proposal for new standard_names for biomass burning emissions
Dear all,
?
???? as per the general CF philosophy to add terms when needed, we propose the addition of the following standard_names for emissions from biomass burning. These follow the syntax of existing names and merely add three chemical species, namely nitrogen_dioxide, molecular_hydrogen, and dimethyl_sulfide (aka "DMS"):
?
tendency_of_atmosphere_mass_content_of_nitrogen_dioxide_due_to_emission_from_savanna_and_grassland_fires
tendency_of_atmosphere_mass_content_of_nitrogen_dioxide_due_to_emission_from_forest_fires
tendency_of_atmosphere_mass_content_of_molecular_hydrogen_due_to_emission_from_savanna_and_grassland_fires
tendency_of_atmosphere_mass_content_of_molecular_hydrogen_due_to_emission_from_forest_fires
tendency_of_atmosphere_mass_content_of_dimethyl_sulfide_due_to_emission_from_savanna_and_grassland_fires
tendency_of_atmosphere_mass_content_of_dimethyl_sulfide_due_to_emission_from_forest_fires
units: kg m-2 s-1
?
??? Note, that the definition of emissions for nitrogen_dioxide is tricky: most inventories only give emissions for "NOx" (the sum of NO and NO2), and sometimes it is not even clear to an uninformed user if these are "expressed_as" nitrogen_monoxide or nitrogen_dioxide, or even nitrogen. The ratio of emitted NO to emitted NO2 varies by source category, and this is now sometimes taken into account in models. Therefore it becomes necessary to define emissions specifically for nitrogen_monoxide (already defined as standard_name) and nitrogen_dioxide (new proposal).
?
??? We should perhaps amend the definition terms for nitrogen_monoxide (and nitrogen_dioxide) emissions as follows:
"[.] In some inventories, emissions of nitrogen_monoxide include the fraction of nitrogen_oxide emissions that is released in the form of nitrogen_dioxide. If this is the case, a comment attribute should be added for clarification."
?
??? An even better and clean solution would be the addition of the species name "NOx" as follows:
"nox_expressed_as_nitrogen_monoxide":
"NOx" means a combination of two radical species containing nitrogen and oxygen: NO+NO2. The phrase 'expressed_as' is used in the construction A_expressed_as_B, where B is a chemical constituent of A. It means that the quantity indicated by the standard name is calculated solely with respect to the B contained in A, neglecting all other chemical constituents of A.
?
??? This would entail the definition of the new standard_names (based on existing terms):
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_savanna_and_grassland_fires
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_forest_fires
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_agricultural_production
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_agricultural_waste_burning
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_industrial_processes_and_combustion
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_energy_production_and_distribution
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_land_transport
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_maritime_transport
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_waste_treatment_and_disposal
tendency_of_atmosphere_mass_content_of_nox_expressed_as_nitrogen_monoxide_due_to_emission_from_residential_and_commercial_combustion
units: kg m-2 s-1
?
tendency_of_mass_concentration_of_nox_expressed_as_nitrogen_monoxide_in_air_due_to_emission_from_aviation
units: kg m-3 s-1
?
?
Best regards,
?
Martin and Angelika
?
?
PD Dr. Martin G. Schultz
IEK-8, Forschungszentrum J?lich
D-52425 J?lich
Ph: +49 2461 61 2831
?
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Forschungszentrum Juelich GmbH
52425 Juelich
Sitz der Gesellschaft: Juelich
Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498
Vorsitzender des Aufsichtsrats: MinDir Dr. Karl Eugen Huthmacher
Geschaeftsfuehrung: Prof. Dr. Achim Bachem (Vorsitzender),
Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt,
Prof. Dr. Sebastian M. Schmidt
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Received on Mon Jan 28 2013 - 05:23:55 GMT
