Dear All,
The standard name table has been updated today on the CF website (
http://cf-pcmdi.llnl.gov/documents/cf-standard-names). The current version is now version 21 dated 12 January 2013. The changes have also been published on the NERC vocabulary server. Full details of the changes are given at the end of this email.
Please note that there are quite a number of standard names currently under discussion and which are therefore not included in this latest update. In particular there are aerosol names proposed by Markus Fiebig and sea level names proposed by Olivier Lauret that have been waiting some time to be resolved. I am currently reviewing Markus' names, which is taking a little time as a number of important points were raised during the discussion. There are also a number of new proposals that have been made in the last 6 or 8 weeks that are not yet fully agreed. For some time now I have been planning to move to a schedule of updating the standard name table approximately monthly; the next update is pencilled in for the week 11th-15th February. Names that are formally accepted in the intervening period will be included in the next update.
Best wishes,
Alison
1. New names
a. Land cover observation names (mailing list thread " proposal for new CF standard names for land cover observation and classification"). Proposed by Martin Boettcher.
surface_bidirectional_reflectance; 1
land_cover_lccs
b. Cloud area fraction names (mailing list thread " Standard_name for cloud-cover by phenomenon"). Proposed by Heiko Klein.
high_type_cloud_area_fraction; 1
medium_type_cloud_area_fraction; 1
low_type_cloud_area_fraction; 1
c. Column ozone content (mailing list thread "new standard name proposal for total ozone in DU"). Proposed by Christophe Lerot.
atmosphere_mole_content_of_ozone; mol m-2
d. Sea ice name (mailing list thread "Help needed with area _type and "surface type classification" datasets). Proposed by Thomas Lavergne.
sea_ice_classification; 1
2. Modifications to definitions of existing names
a. CF Trac Ticket #89 "standard names for vector components". Proposed by Mark Hedley.
The definitons of 52 standard names for _x_ and _y_ vector components and their derivatives were generalized such that standard names containing _x_ and _y_ are not specifically forbidden from use with data variables having lat-lon coordinates. N.B. The definitions of the following names were NOT modified (I will record details of the reasons separately under the trac ticket discussion):
magnitude_of_derivative_of_position_wrt_x_coordinate_index
magnitude_of_derivative_of_position_wrt_y_coordinate_index
projection_x_coordinate
projection_y_coordinate
b. equivalent_thickness_at_stp_of_atmosphere_ozone_content. Proposed by Philip Cameron-Smith.
Definition modified to point out existence of the new name atmosphere_mole_content_of_ozone (canonical units mol m-2). The new name is now the preferred standard name for column ozone measured in Dobson Units (446.2 micromoles m-2) as it is perhaps a more obvious label than the older term and is consistent with new proposals for 'atmosphere_mole_content' of species other than ozone. The older name was not turned into an alias of the new name because it's canonical units (m) are not dimensionally equivalent to mol m-2 even if it is easy to convert between the two.
3. Additions to the list of standard name contributors (
http://cf-pcmdi.llnl.gov/documents/cf-standard-names/cf-standard-name-contributors)
Martin Boettcher
Heiko Klein
Christophe Lerot
Mark Hedley
Philip Cameron-Smith
(Thomas Lavergne is already listed as a contributor)
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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.
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Received on Tue Jan 15 2013 - 06:54:19 GMT
