Hi.
I've finally gotten back to this topic! The definitions below call out
an attribute named "direction" that is used to specify the direction for
positive values of the different quantities. We may need to add a
definition for the attribute to the Conventions. The values and meanings
for the direction attribute are:
roll: "clockwise" for positive right side up and "anticlockwise" for
positive right side down.
pitch: "clockwise" for positive nose up and "anticlockwise" for positive
nose down.
yaw: "clockwise" for positive nose right and "anticlockwise" for
positive nose left.
surge: "positive" for positive forward and "negative" for positive backward.
sway: "positive" for positive left and "negative" for positive right.
heave: "positive" for positive up and "negative" for positive down.
And here are the standard name definitions:
platform_roll: Platform is a structure or vehicle that serves as a base
for mounting sensors. Platforms include, but are not limited to,
satellites, aeroplanes, ships, buoys, ground stations, and masts. Roll
is a rotation about an axis (the X axis) that is perpendicular to the
local vertical axis (the Z axis) and is coplanar with the nominal
forward motion direction of the platform. Roll is relative to the ?at
rest? rotation of the platform with respect to the X axis. The ?at rest?
rotation of the platform may change over time. The direction for
positive values of roll is specified by an attribute named direction.
The value of the direction attribute is "clockwise" if positive values
of roll represent the right side of the platform rising as viewed by an
observer on top of the platform facing forward. The value of the
direction attribute is "anticlockwise" if positive values of roll
represent the right side of the platform falling. The directionality of
roll values is unspecified if no direction attribute is present.
platform_pitch: Platform is a structure or vehicle that serves as a base
for mounting sensors. Platforms include, but are not limited to,
satellites, aeroplanes, ships, buoys, ground stations, and masts. Pitch
is a rotation about an axis (the Y axis) that is perpendicular to both
the local vertical axis (the Z axis) and the nominal forward motion
direction of the platform. Pitch is relative to the ?at rest? rotation
of the platform with respect to the Y axis. The ?at rest? rotation of
the platform may change over time. The direction for positive values of
pitch is specified by an attribute named direction. The value of the
direction attribute is "clockwise" if positive values of pitch represent
the front of the platform rising as viewed by an observer on top of the
platform facing forward. The value of the direction attribute is
"anticlockwise" if positive values of pitch represent the front of the
platform falling. The directionality of pitch values is unspecified if
no direction attribute is present.
platform_yaw: Platform is a structure or vehicle that serves as a base
for mounting sensors. Platforms include, but are not limited to,
satellites, aeroplanes, ships, buoys, ground stations, and masts. Yaw is
a rotation about the local vertical axis (the Z axis). Yaw is relative
to the ?at rest? rotation of the platform with respect to the Z axis.
The ?at rest? rotation of the platform may change over time. The
direction for positive values of yaw is specified by an attribute named
direction. The value of the direction attribute is "clockwise" if
positive values of yaw represent the front of the platform moving to the
right as viewed by an observer on top of the platform facing forward.
The value of the direction attribute is "anticlockwise" if positive
values of yaw represent the front of the platform moving to the left.
The directionality of yaw values is unspecified if no direction
attribute is present.
platform_surge: Platform is a structure or vehicle that serves as a base
for mounting sensors. Platforms include, but are not limited to,
satellites, aeroplanes, ships, buoys, ground stations, and masts. Surge
is a displacement along an axis (the X axis) that is perpendicular to
the local vertical axis (the Z axis) and is coplanar with the nominal
forward motion direction of the platform. Surge is relative to the ?at
rest? position of the platform with respect to the X axis. The ?at rest?
position of the platform may change over time. The direction for
positive values of surge is specified by an attribute named direction.
The value of the direction attribute is "positive" if positive values of
surge represent the platform moving forward as viewed by an observer on
top of the platform facing forward. The value of the direction attribute
is "negative" if positive values of surge represent the platform moving
backward. The directionality of surge values is unspecified if no
direction attribute is present.
platform_sway: Platform is a structure or vehicle that serves as a base
for mounting sensors. Platforms include, but are not limited to,
satellites, aeroplanes, ships, buoys, ground stations, and masts. Sway
is a displacement along an axis (the Y axis) that is perpendicular to
both the local vertical axis (the Z axis) and the nominal forward motion
direction of the platform. Sway is relative to the ?at rest? position of
the platform with respect to the Y axis. The ?at rest? position of the
platform may change over time.? The direction for positive values of
sway is specified by an attribute named direction. The value of the
direction attribute is "positive" if positive values of sway represent
the platform moving left as viewed by an observer on top of the platform
facing forward. The value of the direction attribute is "negative" if
positive values of sway represent the platform moving right. The
directionality of sway values is unspecified if no direction attribute
is present.
platform_heave: Platform is a structure or vehicle that serves as a base
for mounting sensors. Platforms include, but are not limited to,
satellites, aeroplanes, ships, buoys, ground stations, and masts. Heave
is a displacement along the local vertical axis (the Z axis). Heave is
relative to the ?at rest? position of the platform with respect to the Z
axis. The ?at rest? position of the platform may change over time.? The
direction for positive values of heave is specified by an attribute
named direction. The value of the direction attribute is "positive" if
positive values of heave represent the platform moving up as viewed by
an observer on top of the platform facing forward. The value of the
direction attribute is "negative" if positive values of heave represent
the platform moving down. The directionality of heave values is
unspecified if no direction attribute is present.
platform_course: Platform is a structure or vehicle that serves as a
base for mounting sensors. Platforms include, but are not limited to,
satellites, aeroplanes, ships, buoys, ground stations, and masts. Course
is the clockwise angle with respect to North of the nominal forward
motion direction of the platform.
platform_orientation: Platform is a structure or vehicle that serves as
a base for mounting sensors. Platforms include, but are not limited to,
satellites, aeroplanes, ships, buoys, ground stations, and masts.
Orientation is the clockwise angle with respect to North of the
longitudinal (front-to-back) axis of the platform, which may be
different than the platform course (see platform_course).
platform_roll_rate: Platform is a structure or vehicle that serves as a
base for mounting sensors. Platforms include, but are not limited to,
satellites, aeroplanes, ships, buoys, ground stations, and masts. Roll
rate is the rate of rotation about an axis (the X axis) that is
perpendicular to the local vertical axis (the Z axis) and is coplanar
with the nominal forward motion direction of the platform. Roll rate
might not include changes in the ?at rest? rotation of the platform,
which may change over time. The direction for positive values of roll
rate is specified by an attribute named direction. The value of the
direction attribute is "clockwise" if positive values of roll rate
represent the right side of the platform rising as viewed by an observer
on top of the platform facing forward. The value of the direction
attribute is "anticlockwise" if positive values of roll rate represent
the right side of the platform falling. The directionality of roll rate
values is unspecified if no direction attribute is present.
platform_pitch_rate: Platform is a structure or vehicle that serves as a
base for mounting sensors. Platforms include, but are not limited to,
satellites, aeroplanes, ships, buoys, ground stations, and masts. Pitch
rate is the rate of rotation about an axis (the Y axis) that is
perpendicular to both the local vertical axis (the Z axis) and the
nominal forward motion direction of the platform. Pitch rate might not
include changes in the ?at rest? rotation of the platform, which may
change over time. The direction for positive values of pitch rate is
specified by an attribute named direction. The value of the direction
attribute is "clockwise" if positive values of pitch rate represent the
front of the platform rising as viewed by an observer on top of the
platform facing forward. The value of the direction attribute is
"anticlockwise" if positive values of pitch rate represent the front of
the platform falling. The directionality of pitch rate values is
unspecified if no direction attribute is present.
platform_yaw_rate: Platform is a structure or vehicle that serves as a
base for mounting sensors. Platforms include, but are not limited to,
satellites, aeroplanes, ships, buoys, ground stations, and masts. Yaw
rate is the rate of rotation about the local vertical axis (the Z axis).
Yaw rate might not include changes in the ?at rest? rotation of the
platform, which may change over time. The direction for positive values
of yaw rate is specified by an attribute named direction. The value of
the direction attribute is "clockwise" if positive values of yaw rate
represent the front of the platform moving to the right as viewed by an
observer on top of the platform facing forward. The value of the
direction attribute is "anticlockwise" if positive values of yaw rate
represent the front of the platform moving to the left. The
directionality of yaw rate values is unspecified if no direction
attribute is present.
platform_surge_rate: Platform is a structure or vehicle that serves as a
base for mounting sensors. Platforms include, but are not limited to,
satellites, aeroplanes, ships, buoys, ground stations, and masts. Surge
rate is the rate of displacement along an axis (the X axis) that is
perpendicular to the local vertical axis (the Z axis) and is coplanar
with the nominal forward motion direction of the platform. Surge rate
might not include changes in the ?at rest? position of the platform,
which may change over time. The direction for positive values of surge
rate is specified by an attribute named direction. The value of the
direction attribute is "positive" if positive values of surge rate
represent the platform moving forward as viewed by an observer on top of
the platform facing forward. The value of the direction attribute is
"negative" if positive values of surge rate represent the platform
moving backward. The directionality of surge rate values is unspecified
if no direction attribute is present.
platform_sway_rate: Platform is a structure or vehicle that serves as a
base for mounting sensors. Platforms include, but are not limited to,
satellites, aeroplanes, ships, buoys, ground stations, and masts. Sway
rate is the rate of displacement along an axis (the Y axis) that is
perpendicular to both the local vertical axis (the Z axis) and the
nominal forward motion direction of the platform. Sway rate might not
include changes in the ?at rest? position of the platform, which may
change over time. The direction for positive values of sway rate is
specified by an attribute named direction. The value of the direction
attribute is "positive" if positive values of sway rate represent the
platform moving left as viewed by an observer on top of the platform
facing forward. The value of the direction attribute is "negative" if
positive values of sway rate represent the platform moving right. The
directionality of sway rate values is unspecified if no direction
attribute is present.
platform_heave_rate: Platform is a structure or vehicle that serves as a
base for mounting sensors. Platforms include, but are not limited to,
satellites, aeroplanes, ships, buoys, ground stations, and masts. Heave
rate is the rate of displacement along the local vertical axis (the Z
axis). Heave rate might not include changes in the ?at rest? position of
the platform, which may change over time. The direction for positive
values of heave rate is specified by an attribute named direction. The
value of the direction attribute is "positive" if positive values of
heave rate represent the platform moving up as viewed by an observer on
top of the platform facing forward. The value of the direction attribute
is "negative" if positive values of heave rate represent the platform
moving down. The directionality of heave rate values is unspecified if
no direction attribute is present.
Grace and peace,
Jim
On 8/6/18 12:11 PM, Kenneth Kehoe wrote:
> Roy,
>
> I am specifically asking for platform_sway and platform_surge.
>
> Thanks,
>
> Ken
>
>
>
> On 2018-8-6 10:02, Lowry, Roy K. wrote:
>>
>> Hi Jim,
>>
>>
>> One other thing to think on is?the set of 'rate' Standard Names, or
>> are you happy with my prefix from the yaw example added on to your
>> definitions.
>>
>>
>> And finally are we intending to propose platform_sway and
>> platform_surge as new Standard Names in addition to platform_heave
>> which started this discussion even though nobody has specifically
>> asked for them?
>>
>>
>> Cheers, Roy.
>>
>>
>> I have now retired but will continue to be active through an Emeritus
>> Fellowship using this e-mail address.
>>
>>
>>
>> ------------------------------------------------------------------------
>> *From:* CF-metadata <cf-metadata-bounces at cgd.ucar.edu> on behalf of
>> Jim Biard <jbiard at cicsnc.org>
>> *Sent:* 06 August 2018 16:47
>> *To:* CF Metadata List; Jonathan Gregory
>> *Subject:* Re: [CF-metadata] Platform Heave
>> Hi.
>>
>> There are other standard names that call for a separate attribute or
>> variable that provides context. The attributes (at the moment) are
>> all standard CF attributes (cell_methods, flag_meanings, comment,
>> etc). I'd love to get feedback from the community about whether or
>> not a directionality attribute would need to described as a
>> "standard" CF attribute.
>>
>> I'll be glad to rework the definitions to make them
>> directionality-agnostic when I get back next week.
>>
>> Grace and peace,
>>
>> Jim
>>
>> CICS-NC
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>> *Research Scholar*
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>> /formerly NOAA?s National Climatic Data Center/
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>>
>>
>> On Sat, Aug 4, 2018 at 3:45 AM Lowry, Roy K. <rkl at bodc.ac.uk
>> <mailto:rkl at bodc.ac.uk>> wrote:
>>
>> Dear Nan,
>>
>>
>> So are we returning to the wording in Alison's original
>> definitions (e.g. yaw normally clockwise facing front) before
>> you?with my support asked for the ambiguity be removed? Or do you
>> want to go even further with no mention of sign convention at all?
>>
>>
>> I would also question whether a Standard Name definition is the
>> place to specify the mechanism to be used for the description of
>> a sign convention as it has wider implications?than the
>> parameters currently under discussion. Would it not be more
>> appropriate for this to be considered an enhancement to CF and
>> written into the Conventions document? If so, it should it not?be
>> the subject of a GitHub ticket?
>>
>>
>> Cheers, Roy.
>>
>>
>> I have now retired but will continue to be active through an
>> Emeritus Fellowship using this e-mail address.
>>
>>
>>
>> ------------------------------------------------------------------------
>> *From:* CF-metadata <cf-metadata-bounces at cgd.ucar.edu
>> <mailto:cf-metadata-bounces at cgd.ucar.edu>> on behalf of Nan
>> Galbraith <ngalbraith at whoi.edu <mailto:ngalbraith at whoi.edu>>
>> *Sent:* 04 August 2018 02:18
>> *To:* cf-metadata at cgd.ucar.edu <mailto:cf-metadata at cgd.ucar.edu>
>> *Subject:* Re: [CF-metadata] Platform Heave
>> Thanks, Jim.
>>
>> > change the definitions to avoid declaring which direction is
>> > positive, make the direction attribute optional, and say that
>> users
>> > should be careful about assuming the directionality for variables
>> > lacking the attribute.
>>
>> This is the approach I'd prefer as well.
>>
>> - Nan
>>
>>
>> Quoting Jim Biard <jbiard at cicsnc.org <mailto:jbiard at cicsnc.org>>:
>>
>> > Nan,
>> >
>> > I didn't go to the lengths of making new regularized definitions
>> > before I wrote that list. I was thinking in terms of making the
>> > clockwise/anticlockwise call based on the right hand rule and the
>> > unit vector for each axis. For roll, for example, if the X unit
>> > vector faces forward, the "right side down" roll is actually
>> > anticlockwise - that is, it is in the direction that your right
>> hand
>> > fingers curl if you grab the unit vector in your hand with your
>> > thumb pointing in the same direction as the unit vector. That
>> > definition is independent of observer location and look direction.
>> > My definitions for all the direction values are following that
>> same
>> > convention.
>> >
>> > Accurate knowledge of the sign of roll, pitch, and yaw is critical
>> > in the satellite and aircraft world. The look angles for remote
>> > sensors are affected by these values. I get it that not all
>> systems
>> > care about the signed values, so that reason and for backward
>> > compatibility I suggested that we could change the definitions to
>> > avoid declaring which direction is positive, make the direction
>> > attribute optional, and say that users should be careful about
>> > assuming the directionality for variables lacking the attribute.
>> >
>> > Grace and peace,
>> >
>> > Jim
>> >>
>> >> On 8/3/18 2:03 PM, Nan Galbraith wrote:
>> >>> Hi Roy -
>> >>>
>> >>> Yes,? I've been looking at that page quite a bit lately, and I
>> >>> think it backs up
>> >>> what I'm saying.
>> >>>
>> >>> If you are standing on that fuselage (may we never), facing
>> >>> forward, the red roll
>> >>> arrow is showing a clockwise motion, with right side moving
>> >>> downward. If you
>> >>> were facing aft, the arrow would be anticlockwise, but the
>> right side would
>> >>> be rising.
>> >>>
>> >>> So, 'roll: "clockwise" for positive right side up and
>> >>> "anticlockwise" for positive right
>> >>> side down'??? - is backwards in either case. I'm not disputing
>> >>> anything except
>> >>> the term 'clockwise'? in this phrase.
>> >>>
>> >>> Thanks - Nan
>> >>>
>> >>> On 8/3/18 1:43 PM, Lowry, Roy K. wrote:
>> >>>>
>> >>>> Hi Nan,
>> >>>>
>> >>>>
>> >>>> Whilst I appreciate the limitations of Wikipedia as an
>> >>>> authoritative source have a look at
>> >>>> https://en.wikipedia.org/wiki/Aircraft_principal_axes
>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__en.wikipedia.org_wiki_Aircraft-5Fprincipal-5Faxes&d=DwMF-g&c=qKdtBuuu6dQK9MsRUVJ2DPXW6oayO8fu4TfEHS8sGNk&r=Vm7o2ZGxPkkqRuPs8nVMVQ&m=uVfoFv-LtZ2x4jvCcYtHX-YLw4uUnDgUjlQ0IOZ9PxQ&s=vsq2M6-NEvFLhjrrcxFzQzHADYPYRymmMIyRAD7Eri8&e=>
>>
>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__en.wikipedia.org_wiki_Aircraft-5Fprincipal-5Faxes&d=DwMF-g&c=qKdtBuuu6dQK9MsRUVJ2DPXW6oayO8fu4TfEHS8sGNk&r=Vm7o2ZGxPkkqRuPs8nVMVQ&m=uVfoFv-LtZ2x4jvCcYtHX-YLw4uUnDgUjlQ0IOZ9PxQ&s=vsq2M6-NEvFLhjrrcxFzQzHADYPYRymmMIyRAD7Eri8&e=>
>>
>> Aircraft principal axes - Wikipedia
>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__en.wikipedia.org_wiki_Aircraft-5Fprincipal-5Faxes&d=DwMF-g&c=qKdtBuuu6dQK9MsRUVJ2DPXW6oayO8fu4TfEHS8sGNk&r=Vm7o2ZGxPkkqRuPs8nVMVQ&m=uVfoFv-LtZ2x4jvCcYtHX-YLw4uUnDgUjlQ0IOZ9PxQ&s=vsq2M6-NEvFLhjrrcxFzQzHADYPYRymmMIyRAD7Eri8&e=>
>> en.wikipedia.org
>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__en.wikipedia.org&d=DwMF-g&c=qKdtBuuu6dQK9MsRUVJ2DPXW6oayO8fu4TfEHS8sGNk&r=Vm7o2ZGxPkkqRuPs8nVMVQ&m=uVfoFv-LtZ2x4jvCcYtHX-YLw4uUnDgUjlQ0IOZ9PxQ&s=F2oneKZNdTKs8-R1zyCWTiC3MJEk-b1hTZ2iCfnPse4&e=>
>> Normal axis, or yaw axis ? an axis drawn from top to bottom, and
>> perpendicular to the other two axes.Parallel to the fuselage
>> station.; Transverse axis, lateral axis, or pitch axis ? an axis
>> running from the pilot's left to right in piloted aircraft, and
>> parallel to the wings of a winged aircraft.
>>
>>
>>
>> >>>>
>> >>>>
>> >>>> Cheers, Roy.
>> >>>>
>> >>>>
>> >>>>
>> ------------------------------------------------------------------------
>>
>> >>>> *From:* Nan Galbraith <ngalbraith at whoi.edu
>> <mailto:ngalbraith at whoi.edu>>
>> >>>> *Sent:* 03 August 2018 18:23
>> >>>> *To:* Jim Biard; Lowry, Roy K.; kkehoe at ou.edu
>> <mailto:kkehoe at ou.edu>
>> >>>> *Subject:* Re: [CF-metadata] Platform Heave (pitch, roll)
>> >>>> Hi Jim, Roy and Ken -
>> >>>>
>> >>>> I'm skipping the list because this is a minor point and ...
>> and I may be
>> >>>> missing
>> >>>> something obvious.
>> >>>>
>> >>>> It's hard not to think of these terms as they apply to
>> ships. In that
>> >>>> environment,
>> >>>> we'd use the convention of the observer facing forward;
>> therefore roll
>> >>>> would be
>> >>>> clockwise if the right side were going down, not up. I'm
>> supposing that
>> >>>> would
>> >>>> also apply to aircraft.
>> >>>>
>> >>>> Cheers - Nan
>> >>>>
>> >>>>
>> >>>>
>> >>>>> If we declare that X is positive forward, that Y is
>> positive left,
>> >>>>> that Z is positive up, and that we use the right-hand rule
>> for angle
>> >>>>> directions, the direction attribute values could be:
>> >>>>>
>> >>>>> ? * roll: "clockwise" for positive right side up and
>> "anticlockwise"
>> >>>>> ??? for positive right side down.
>> >>>>> ? * pitch: "clockwise" for positive nose up and
>> "anticlockwise" for
>> >>>>> ??? positive nose down.
>> >>>>> ? * yaw: "clockwise" for positive nose right and
>> "anticlockwise" for
>> >>>>> ??? positive nose left.
>> >>>>> ? * surge: "positive" for positive forward and "negative" for
>> >>>>> ??? positive backward.
>> >>>>> ? * sway: "positive" for positive left and "negative" for
>> positive right.
>> >>>>> ? * heave: "positive" for positive up and "negative" for
>> positive down.
>> >>>>>
>> >>>>
>> >>>>
>> >>>>>
>> >>>>>>>
>> >>>>>>>
>> ------------------------------------------------------------------------
>>
>> >>>>>>> >>>
>> >>>>>>> *From:* CF-metadata <cf-metadata-bounces at cgd.ucar.edu
>> <mailto:cf-metadata-bounces at cgd.ucar.edu>> on behalf of
>> >>>>>>> Jim Biard <jbiard at cicsnc.org <mailto:jbiard at cicsnc.org>>
>> >>>>>>> *Sent:* 03 August 2018 15:41
>> >>>>>>> *To:* cf-metadata at cgd.ucar.edu
>> <mailto:cf-metadata at cgd.ucar.edu>
>> >>>>>>> *Subject:* Re: [CF-metadata] Platform Heave
>> >>>>>>>
>> >>>>>>> I freely admit that I picked direction on sway
>> arbitrarily. In my
>> >>>>>>> experience, part of the variation that arises in the
>> definitions of
>> >>>>>>> the different motions arises from different thoughts
>> about their
>> >>>>>>> use, particularly whether someone is thinking the values
>> are used to
>> >>>>>>> transform into the platform body frame vs transform from
>> it. Or
>> >>>>>>> maybe they just aren't worrying about consistency. Like
>> as not,
>> >>>>>>> choices have often been made in attempts to make the
>> values have the
>> >>>>>>> signed-ness that felt right to people, and we can't keep to
>> >>>>>>> conventions like the right hand rule and make it all work
>> >>>>>>> consistently. We want a positive pitch to be nose up. We
>> want a
>> >>>>>>> positive yaw to be nose right. We want positive heave to
>> be up. My
>> >>>>>>> natural tendency is to think of "roll right" as positive
>> and "sway
>> >>>>>>> right" as positive, but that isn't what other people
>> think of.
>> >>>>>>>
>> >>>>>>> As I read what I wrote, I realize I didn't use a
>> consistent approach
>> >>>>>>> to position and look direction when assigning clockwise and
>> >>>>>>> anticlockwise to roll, pitch, and yaw. I need to
>> regularize that.
>> >>>>>>>
>> >>>>>>> Reading the Conventions about vertical coordinates, it
>> says they
>> >>>>>>> must all have a "positive" attribute with a value of "up"
>> or "down".
>> >>>>>>> I don't see a problem with having the definitions back off of
>> >>>>>>> declaring a specific directionality and add an attribute
>> declaring
>> >>>>>>> directionality. We could call the attribute "direction"
>> so as not to
>> >>>>>>> step on the "positive" attribute, and say that if the
>> attribute is
>> >>>>>>> not present that the user should not assume which
>> direction is correct.
>> >>>>>>>
>> >>>>>>> If we declare that X is positive forward, that Y is
>> positive left,
>> >>>>>>> that Z is positive up, and that we use the right-hand
>> rule for angle
>> >>>>>>> directions, the direction attribute values could be:
>> >>>>>>>
>> >>>>>>> ? * roll: "clockwise" for positive right side up and
>> "anticlockwise"
>> >>>>>>> ??? for positive right side down.
>> >>>>>>> ? * pitch: "clockwise" for positive nose up and
>> "anticlockwise" for
>> >>>>>>> positive nose down.
>> >>>>>>> ? * yaw: "clockwise" for positive nose right and
>> "anticlockwise" for
>> >>>>>>> positive nose left.
>> >>>>>>> ? * surge: "positive" for positive forward and "negative" for
>> >>>>>>> positive backward.
>> >>>>>>> ? * sway: "positive" for positive left and "negative" for
>> positive
>> >>>>>>> right.
>> >>>>>>> ? * heave: "positive" for positive up and "negative" for
>> positive down.
>> >>>>>>>
>> >>>>>>> Thoughts?
>> >>>>>>>
>> >>>>>>> BTW, I'll be out until August 13.
>> >>>>>>>
>> >>>>>>> Grace and peace,
>> >>>>>>>
>> >>>>>>> Jim
>> >>>>>>>
>> >>>
>> >>>
>> >>
>> >> --
>> >> CICS-NC <http://www.cicsnc.org/
>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.cicsnc.org_&d=DwMF-g&c=qKdtBuuu6dQK9MsRUVJ2DPXW6oayO8fu4TfEHS8sGNk&r=Vm7o2ZGxPkkqRuPs8nVMVQ&m=uVfoFv-LtZ2x4jvCcYtHX-YLw4uUnDgUjlQ0IOZ9PxQ&s=x34l51xPXmgH-aUwvSrR2s1BvnegDR9v5TUvmlkuC08&e=>>
>> Visit us on
>> >> Facebook <http://www.facebook.com/cicsnc
>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.facebook.com_cicsnc&d=DwMF-g&c=qKdtBuuu6dQK9MsRUVJ2DPXW6oayO8fu4TfEHS8sGNk&r=Vm7o2ZGxPkkqRuPs8nVMVQ&m=uVfoFv-LtZ2x4jvCcYtHX-YLw4uUnDgUjlQ0IOZ9PxQ&s=ms-RsdZkI8VABhdzIF3uemXo55CtII0rsdo8p0EYXwM&e=>>
>> *Jim Biard*
>> >> *Research Scholar*
>> >> Cooperative Institute for Climate and Satellites NC
>> <http://cicsnc.org/
>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__cicsnc.org_&d=DwMF-g&c=qKdtBuuu6dQK9MsRUVJ2DPXW6oayO8fu4TfEHS8sGNk&r=Vm7o2ZGxPkkqRuPs8nVMVQ&m=uVfoFv-LtZ2x4jvCcYtHX-YLw4uUnDgUjlQ0IOZ9PxQ&s=dULLQNwecP3zJLjL5xmrBdaMifj8CGxHQVPkkTbgRRs&e=>>
>> >> North Carolina State University <http://ncsu.edu/
>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__ncsu.edu_&d=DwMF-g&c=qKdtBuuu6dQK9MsRUVJ2DPXW6oayO8fu4TfEHS8sGNk&r=Vm7o2ZGxPkkqRuPs8nVMVQ&m=uVfoFv-LtZ2x4jvCcYtHX-YLw4uUnDgUjlQ0IOZ9PxQ&s=pc9bIRFh1dbwzMr31a0uZZsN9rtfZQW3CJ6up_ZoctU&e=>>
>> >> NOAA National Centers for Environmental Information
>> <http://ncdc.noaa.gov/
>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__ncdc.noaa.gov_&d=DwMF-g&c=qKdtBuuu6dQK9MsRUVJ2DPXW6oayO8fu4TfEHS8sGNk&r=Vm7o2ZGxPkkqRuPs8nVMVQ&m=uVfoFv-LtZ2x4jvCcYtHX-YLw4uUnDgUjlQ0IOZ9PxQ&s=W7I_Xw3TkOaJnM-fY_w1EGSZp2wCuNP2eAzOeeh4MPM&e=>>
>> >> /formerly NOAA?s National Climatic Data Center/
>> >> 151 Patton Ave, Asheville, NC 28801
>> >> e: jbiard at cicsnc.org <mailto:jbiard at cicsnc.org>
>> <mailto:jbiard at cicsnc.org>
>> >> o: +1 828 271 4900
>> >>
>> >> /Connect with us on Facebook for climate
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>> and ocean and geophysics
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>> and _at_NOAANCEIocngeo
>> >> <https://twitter.com/NOAANCEIocngeo
>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__twitter.com_NOAANCEIocngeo&d=DwMF-g&c=qKdtBuuu6dQK9MsRUVJ2DPXW6oayO8fu4TfEHS8sGNk&r=Vm7o2ZGxPkkqRuPs8nVMVQ&m=uVfoFv-LtZ2x4jvCcYtHX-YLw4uUnDgUjlQ0IOZ9PxQ&s=SoEnBZw_EODW-MfrLWXeaXZaRA9JZTU4dZSUxHXDz7Y&e=>>.
>> /
>> >>
>> >>
>> >
>> > --
>> > CICS-NC <http://www.cicsnc.org/
>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.cicsnc.org_&d=DwMF-g&c=qKdtBuuu6dQK9MsRUVJ2DPXW6oayO8fu4TfEHS8sGNk&r=Vm7o2ZGxPkkqRuPs8nVMVQ&m=uVfoFv-LtZ2x4jvCcYtHX-YLw4uUnDgUjlQ0IOZ9PxQ&s=x34l51xPXmgH-aUwvSrR2s1BvnegDR9v5TUvmlkuC08&e=>>
>> Visit us on
>> > Facebook <http://www.facebook.com/cicsnc
>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.facebook.com_cicsnc&d=DwMF-g&c=qKdtBuuu6dQK9MsRUVJ2DPXW6oayO8fu4TfEHS8sGNk&r=Vm7o2ZGxPkkqRuPs8nVMVQ&m=uVfoFv-LtZ2x4jvCcYtHX-YLw4uUnDgUjlQ0IOZ9PxQ&s=ms-RsdZkI8VABhdzIF3uemXo55CtII0rsdo8p0EYXwM&e=>>
>> *Jim Biard*
>> > *Research Scholar*
>> > Cooperative Institute for Climate and Satellites NC
>> <http://cicsnc.org/
>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__cicsnc.org_&d=DwMF-g&c=qKdtBuuu6dQK9MsRUVJ2DPXW6oayO8fu4TfEHS8sGNk&r=Vm7o2ZGxPkkqRuPs8nVMVQ&m=uVfoFv-LtZ2x4jvCcYtHX-YLw4uUnDgUjlQ0IOZ9PxQ&s=dULLQNwecP3zJLjL5xmrBdaMifj8CGxHQVPkkTbgRRs&e=>>
>> > North Carolina State University <http://ncsu.edu/
>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__ncsu.edu_&d=DwMF-g&c=qKdtBuuu6dQK9MsRUVJ2DPXW6oayO8fu4TfEHS8sGNk&r=Vm7o2ZGxPkkqRuPs8nVMVQ&m=uVfoFv-LtZ2x4jvCcYtHX-YLw4uUnDgUjlQ0IOZ9PxQ&s=pc9bIRFh1dbwzMr31a0uZZsN9rtfZQW3CJ6up_ZoctU&e=>>
>> > NOAA National Centers for Environmental Information
>> <http://ncdc.noaa.gov/
>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__ncdc.noaa.gov_&d=DwMF-g&c=qKdtBuuu6dQK9MsRUVJ2DPXW6oayO8fu4TfEHS8sGNk&r=Vm7o2ZGxPkkqRuPs8nVMVQ&m=uVfoFv-LtZ2x4jvCcYtHX-YLw4uUnDgUjlQ0IOZ9PxQ&s=W7I_Xw3TkOaJnM-fY_w1EGSZp2wCuNP2eAzOeeh4MPM&e=>>
>> > /formerly NOAA?s National Climatic Data Center/
>> > 151 Patton Ave, Asheville, NC 28801
>> > e: jbiard at cicsnc.org <mailto:jbiard at cicsnc.org>
>> <mailto:jbiard at cicsnc.org>
>> > o: +1 828 271 4900
>> >
>> > /Connect with us on Facebook for climate
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>> and ocean and geophysics
>> > <https://www.facebook.com/NOAANCEIoceangeo
>> <https://urldefense.proofpoint.com/v2/url?u=https-3A__www.facebook.com_NOAANCEIoceangeo&d=DwMF-g&c=qKdtBuuu6dQK9MsRUVJ2DPXW6oayO8fu4TfEHS8sGNk&r=Vm7o2ZGxPkkqRuPs8nVMVQ&m=uVfoFv-LtZ2x4jvCcYtHX-YLw4uUnDgUjlQ0IOZ9PxQ&s=7Bc5J9zHYQ9FmY2Z15-varm_gGauDkwVQT0rEeYLbvE&e=>>
>> information, and follow
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>> /
>>
>>
>>
>> _______________________________________________
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>> ------------------------------------------------------------------------
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>> NERC unless it is exempt from release under the Act. Any material
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>
> --
> Kenneth E. Kehoe
> Research Associate - University of Oklahoma
> Cooperative Institute for Mesoscale Meteorological Studies
> ARM Climate Research Facility - Data Quality Office
> e-mail:kkehoe at ou.edu | Office: 303-497-4754 | Cell: 405-826-0299
>
>
>
> _______________________________________________
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> http://mailman.cgd.ucar.edu/mailman/listinfo/cf-metadata
--
CICS-NC <http://www.cicsnc.org/> Visit us on
Facebook <http://www.facebook.com/cicsnc> *Jim Biard*
*Research Scholar*
Cooperative Institute for Climate and Satellites NC <http://cicsnc.org/>
North Carolina State University <http://ncsu.edu/>
NOAA National Centers for Environmental Information <http://ncdc.noaa.gov/>
/formerly NOAA?s National Climatic Data Center/
151 Patton Ave, Asheville, NC 28801
e: jbiard at cicsnc.org <mailto:jbiard at cicsnc.org>
o: +1 828 271 4900
/Connect with us on Facebook for climate
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