Alison,
It all looks good to me. I must confess that I didn't give the
definitions a super-careful reading.
I have a question, but I don't want it to derail anything. I'd just like
to understand the thought.
We have included instrument as a type of platform per Nan's request, but
in the areas I have worked in an instrument is always mounted on
something, so I don't consider it to be an example of a platform. I'd
consider the thing the instrument is mounted on as the platform. Is it
common in other disciplines to think of instruments as free-standing (or
floating or flying)?
Grace and peace,
Jim
On 10/3/18 1:10 PM, Alison Pamment - UKRI STFC wrote:
Dear Jim, Roy, Nan, Jonathan, et al.,
I have drawn together what I hope is the final list for the platform names.
We seem to be agreed on the need to have triplets of names to cope with
opposite sign conventions and the case where the sign convention is unknown.
I've followed Roy's comment
http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2018/020540.html regarding
cross-referencing in the definitions, i.e. adding the statement to only choose
the unsigned names if the convention is truly unknown. I plan to create aliases
for some of the existing names as follows:
platform_yaw_angle -> platform_yaw
platform_pictch_angle -> platform_pitch
platform_roll_angle > platform_roll
to make them consistent with the new names. In addition to Jim's 12th September
proposals (http://mailman.cgd.ucar.edu/pipermail/cf-metadata/2018/020513.html),
new names for platform_sway, platform_sway_rate, platform_surge and
platform_surge_rate are needed to provide complete triplets of names for all
the quantities.
The definitions of the new quantities are all based on Jim's text, with the
'platform' description moved to the end. 'Instrument' has been added to the
list of platforms as I think this was requested by Nan earlier in the
discussion. (I think we can regard an 'instrument' as a way to mount one or
more 'sensors'). The definitions of all existing platform names will be updated
for consistency.
On a grammatical point, I noticed that the definitions of yaw/pitch/roll/surge rate in Jim's message all said "Yaw/pitch/roll/surge rate *might
not* include changes to the "at rest" position of the platform ..." whereas the definitions of sway/heave rate said "Sway/heave
rate *may not* include changes to the "at rest" position of the platform ...". I have changed all the definitions to say "might
not" instead of "may not" as I think the latter could sound like we are prohibiting the inclusion of changes to the "at
rest" position, which I don't think is the intention. Please correct me if this is wrong!
I have added all the names into the standard names editor:
http://cfeditor.ceda.ac.uk/proposals/1?status=active&namefilter=platform&proposerfilter=&descfilter=&unitfilter=&yearfilter=&commentfilter=&filter+and+display=Filter.
To save copying and pasting all the text into this message, please use the link to check through the full
list. N.B. You can refine the filters to view smaller subsets of names together, e.g., 'platform_sway'. If
no objections or suggestions for further changes are received, the names will be accepted in their current
form and published on 15th October.
Best wishes,
Alison
------
Alison Pamment Tel: +44 1235 778065
NCAS/Centre for Environmental Data Archival Email: [email protected]
STFC Rutherford Appleton Laboratory
R25, 2.22
Harwell Oxford, Didcot, OX11 0QX, U.K.
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