Dear Tomoo,
Thank you for supplying a list of processes. I propose to write the
definition of the 'cloud_microphysics' names to include the following
text:
' "cloud_microphysics" is the sum of many cloud processes such as
condensation, evaporation, homogeneous nucleation, heterogeneous
nucleation, deposition, sublimation, the Bergeron-Findeisen process,
riming, accretion, aggregation and icefall. The precise list of
processes that are included in "cloud_microphysics" can vary between
models. Where possible, the data variable should be accompanied by a
complete description of the processes included, for example, by using a
comment attribute. Standard names also exist to describe the tendencies
due to the separate processes.'
Hopefully this definition gives enough information to be helpful, but
allows for variation between models. There are existing standard names
with similarly loose definitions, e.g. the chemical species included in
"alkanes" can vary between different chemistry models, so I don't think
there is any problem with treating cloud feedback names in this way.
If you are happy with the definition then I think we can go ahead and
accept all these names.
Best wishes,
Alison
------
Alison Pamment Tel: +44 1235 778065
NCAS/British Atmospheric Data Centre Fax: +44 1235 446314
Rutherford Appleton Laboratory Email: alison.pamment at stfc.ac.uk
Chilton, Didcot, OX11 0QX, U.K.
> -----Original Message-----
> From: cf-metadata-bounces at cgd.ucar.edu [mailto:cf-metadata-
> bounces at cgd.ucar.edu] On Behalf Of Tomoo Ogura
> Sent: 29 April 2010 06:30
> To: cf-metadata at cgd.ucar.edu
> Subject: Re: [CF-metadata] proposal for new standard names
>
> Dear Alison,
>
> Thank you for your email.
> Yes, the variable 'cloud_microphysics' is the sum of many processes
> including evaporation/condensation. The processes included in the
> variable 'cloud_microphysics' are as follows;
>
> condensation and evaporation
> homogeneous nucleation
> heterogeneous nucleation
> deposition and sublimation
> Bergeron Findeisen process
> riming
> acrretion
> aggregation
> icefall
> melting
> autoconversion
>
> Please note that the above list is an example for one GCM 'MIROC5.0',
> and
> the
> processes in the list may be different in other GCMs depending on
their
> modelling
> assuptions - I hope this will not be a problem when defining a
standard
> name.
> Our current idea is to recommend the project (CFMIP) participants to
> submit
> model output 'cloud_microphysics', and also the list of processes
> included
> in
> that variable.
>
> Best wishes,
> Tomoo
>
> ---
> Tomoo OGURA
> National Institute for Environmental Studies
> 16-2 Onogawa, Tsukuba, Ibaraki 305-8506 Japan
> Phone +81-29-850-2484 Fax +81-29-850-2960
>
> > -----Original Message-----
> >
> > Dear Tomoo,
> >
> > Thank you for your proposals for new cloud feedback standard names.
I
> > agree that the wording of the names is fine. I assume that
> > 'cloud_microphysics' is the sum of many of the processes such as
> > bergeron-findeison, heterogeneous and homogeneous nucleation, etc.,
> but
> > does it also include evaporation/condensation for example? If you
> could
> > list which processes are included in cloud_microphysics that would
be
> > very helpful for writing the definitions of the names.
> >
> > Best wishes,
> > Alison
> >
> > ------
> > Alison Pamment Tel: +44 1235 778065
> > NCAS/British Atmospheric Data Centre Fax: +44 1235 446314
> > Rutherford Appleton Laboratory Email:
> alison.pamment at stfc.ac.uk
> >Chilton, Didcot, OX11 0QX, U.K.
> >
>
> > -----Original Message-----
> > From: cf-metadata-bounces at cgd.ucar.edu [mailto:cf-metadata-
> > bounces at cgd.ucar.edu] On Behalf Of Tomoo Ogura
> > Sent: 26 April 2010 10:18
> > To: Jonathan Gregory; cf-metadata at cgd.ucar.edu
> > Subject: Re: [CF-metadata] proposal for new standard names
> >
> > Dear Jonathan
> >
> > Thanks for your reply. I agree with your suggestions and my proposal
> > has been updated as follows:
> >
> > * microphysics replaced by cloud_microphysics
> > * Bergeron_Findeisen written in lower case
> >
> > tendency_of_mass_fraction_of_stratiform_cloud_liquid_water_in_air
> >
>
tendency_of_mass_fraction_of_stratiform_cloud_liquid_water_in_air_due_t
> > o_cloud_microphysics
> >
>
tendency_of_mass_fraction_of_stratiform_cloud_liquid_water_in_air_due_t
> > o_boundary_layer_mixing
> >
>
tendency_of_mass_fraction_of_stratiform_cloud_liquid_water_in_air_due_t
> > o_bergeron_findeisen_process_to_cloud_ice
> > tendency_of_mass_fraction_of_stratiform_cloud_ice_in_air
> >
>
tendency_of_mass_fraction_of_stratiform_cloud_ice_in_air_due_to_cloud_m
> > icrophysics
> >
>
tendency_of_mass_fraction_of_stratiform_cloud_ice_in_air_due_to_boundar
> > y_layer_mixing
> >
>
tendency_of_mass_fraction_of_stratiform_cloud_ice_in_air_due_to_bergero
> > n_findeisen_process_from_cloud_liquid
> > tendency_of_mass_fraction_of_stratiform_cloud_condensed_water_in_air
> >
>
tendency_of_mass_fraction_of_stratiform_cloud_condensed_water_in_air_du
> > e_to_cloud_microphysics
> >
>
tendency_of_mass_fraction_of_stratiform_cloud_condensed_water_in_air_du
> > e_to_boundary_layer_mixing
> >
> > Best wishes
> > Tomoo
> > ---
> > Tomoo OGURA
> > National Institute for Environmental Studies
> > 16-2 Onogawa, Tsukuba, Ibaraki 305-8506 Japan
> > Phone +81-29-850-2484 Fax +81-29-850-2960
> >
> _______________________________________________
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> CF-metadata at cgd.ucar.edu
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--
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Received on Thu Apr 29 2010 - 03:51:35 BST
