Please review EML unit dictionary

[Matt Jones]

Tim,

Done.  Note that the new bug was bug #1000 in the bug database!

Matt

Tim Bergsma wrote:
> Don,
> 
> Speaking as someone who worked on the unit dictionary, your review
> comments are priceless.  Even those items that are not resolved
> immediately are certain to be valuable later.  Thanks.
> 
> David,  
> 
> will Don's comments get checked into bugzilla?
> 
> 
> Tim.
> 
> 
>>"Henshaw, Don" wrote:
>>
>>David,
>>I have reviewed the Andrews unit dictionary.  The following are units
>>of measurement that we have used at the Andrews that I did not find in
>>eml-2.0.0\eml-unitDictionary.xml, as well as a few other notes.
>>
>>Thanks,
>>don
>>
>>pressure: hectopascal (=100 pascals)
>>volume: cubic centimeters
>>volumetricArea: cubic meters per hectare
>>volumetricArea: cubic meters per square meter
>>massDensity: megagrams per cubic meter
>>arealMassDensity: grams per square centimeter
>>arealMassDensity: megagrams per hectare
>>arealMassDensityRate: grams per square meter per day
>>amountOfSubstanceWeight: micromoles per gram
>>amountOfSubstanceWeightFlux: micromoles per gram per day
>>amountOfSubstanceWeightFlux: micromoles per gram per hour
>>amountOfSubstanceWeightFlux: nanomoles per gram per day
>>amountOfSubstanceWeightFlux: nanomoles per gram per hour
>>speed: inches per hour (used more as a rate than a speed)
>>energy?:  megajoule per square meter per day (solar radiation)
>>energy?:  langley (1 langley=4.187joules per square centimeter, 41870
>>joules per square meter)
>>energy?: langleys per day (solar radiation)
>>conductance?: micro mhos per centimeter
>>
>>I do not think there are unit types for the following (I assigned unit
>>type names):
>>massPerMassRate: micrograms per gram per day
>>massPerMassRate: micrograms per gram per hour
>>massPerMassRate: micrograms per gram per week
>>massPerMassRate: nanograms per gram per hour
>>areaPerArea: square meters per hectare
>>luminanceRate??: micromoles per square meter per second (light
>>measurement from LICOR instrument)
>>
>>Not sure how these fit:
>>milliequivalents per 100 grams
>>pH units
>>ppm (parts per million)
>>ppb (parts per billion)
>>
>>What about the following use of degrees, minutes, seconds?
>>degrees azimuth
>>decimal degrees of latitude or longitude
>>degrees, minutes, seconds of latitude, longitude
>>
>>On another topic:
>>Can a julian date be represented in the format string
>>for measurementScale of datetime
>>i.e., YYYYddd
>>
>>Other notes (being rather picky): pertaining to eml-unitDictionary.xml
>>(2.0.0)
>>following units seems to show wrong abbreviation and multiplier
>>milliGramsPerMilliLiter
>>cubicMicrometersPerGram
>>
>>The following unit names seem contrary to the convention of showing
>>units in singular form:
>>squareCentimeters
>>squareMillimeters
>>squareKilometers
>>cubicMeterPerKilogram
>>
>>Not all units show an abbreviation, even when an obvious one exists,
>>ie., kg/ha or g/g
>>liter shows "L" as the abbreviation
>>
>>
>>     -----Original Message-----
>>     From: David Blankman [mailto:dblankman at lternet.edu]
>>     Sent: Monday, February 10, 2003 1:52 PM
>>     To: Iml
>>     Cc: Eml-Dev (E-mail)
>>     Subject: Please review EML unit dictionary
>>
>>     Request of LTER IM's
>>     Somehow two units that were supposed to have been in the
>>     unitDictionary, numberPerMilliliter and numberPerLiter were
>>     mistakenly omitted. Prior to releasing a supplement to the
>>     unitDictionary and therefore to EML, we would like to see if
>>     there are any other units that we missed.
>>
>>     In reviewing the unitDictionary, remember that the unit
>>     names in the unitDictionary are often more abstract than the
>>     ones that you actually use. For example, one of the units
>>     that we are in the process of adding is numberPerMilliliter.
>>     The "number" portion is an abstract representation of the
>>     unit "cells/milliliter".  A unit like microgramsPerGram is
>>     an abstract representation of a class of measurements like:
>>     micrograms of carbon per gram of soil.
>>
>>     --
>>     David E. Blankman
>>     Database Integration Developer
>>     Long Term Ecological Research Network Office
>>     University of New Mexico
>>     801 University, SE #104
>>     Albuquerque, NM 87106
>>     (505) 272-7346 / (505) 272-7080 FAX
> 
> 


-- 
*******************************************************************
Matt Jones                                    jones at nceas.ucsb.edu
http://www.nceas.ucsb.edu/    Fax: 425-920-2439   Ph: 907-789-0496
National Center for Ecological Analysis and Synthesis (NCEAS)

Interested in ecological informatics? http://www.ecoinformatics.org
*******************************************************************