NCEAS / eml

Ecological Metadata Language (EML)
https://eml.ecoinformatics.org/
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units not in eml-unitDictionary #140

Closed mbjones closed 6 years ago

mbjones commented 7 years ago

Author Name: Margaret O'Brien (Margaret O'Brien) Original Redmine Issue: 1634, https://projects.ecoinformatics.org/ecoinfo/issues/1634 Original Date: 2004-07-09 Original Assignee: Matt Jones

As requested, here is the list of customUnits used by sbclter (to date). The current version of this list can be found at the url above. Several of these units need addional attributes or definition. These are commonly-used units in oceanography and limnology. ` <unit id="reciprocalMeter" name="reciprocalMeter" unitType="lengthReciprocal" abbreviation="m-1" parentSI="meter" multiplerToSI="1">

per meter, describes optical properties

`

` <unit id="reciprocalMetersPerSteradian" name="reciprocalMetersPerSteradian" unitType="lengthReciprocal" abbreviation="m-1*sr-1" parentSI="meter" multiplerToSI="">

describes directional optical measurements

`

`<unit id="microwattsPerSquareCentimeterPerNanometer" name="microwattsPerSquareCentimeterPerNanometer" unitType="power" parentSI="joule">

irradance unit

`

`<unit id="microwattsPerSquareCentimeterPerNanometerPerSteradian" name="microwattsPerSquareCentimeterPerNanometerPerSteradian" unitType="power" parentSI="joule">

directional irradiance unit

`

` <unit id="microeinsteinsPerSquareMeterPerSecond" name="microeinsteinsPerSquareMeterPerSecond" unitType="energy" parentSI="joule">

PAR irradiance unit, Seabird 911. 1Ein = energy of 1 mole photons

`

`<unit id="microeinsteinsPerSquareCentimeterPerSecond" name="microeinsteinsPerSquareCentimeterPerSecond" unitType="energy" parentSI="joule">

PAR Scalar irradiance unit. 1Ein = energy of 1 mole photons

`

`<unit id="decibar" name="decibar" unitType="pressure" abbreviation="dbar" parentSI="pascal" multiplerToSI="10,000">

pressure, oceanography

`

`<unit id="hectoPascal" name="hectoPascal" unitType="pressure" abbreviation="hPa" parentSI="pascal" multiplerToSI="100">

SI unit for atmospheric pressure, equivalent in magnitude to millibar

`

`<unit id="percent" name="percent" unitType="massPerMass" abbreviation="o/o" parentSI="gramsPerGram" multiplerToSI=".01">

parts per hundred

`

`<unit id="permil" name="permil" unitType="massPerMass" abbreviation="o/oo" parentSI="gramsPerGram">

parts per thousand relative to a std composition. UC-delta used for isotope enrichment = (Rx / Rs - 1) ·1000. o/oo used for salinity

`

`<unit id="sigma_unit" name="sigma_unit" unitType="massDensity" parentSI="killogramsPerCubicMeter" constantToSI="-1000" multiplerToSI="1">

seawater density = kg/m3 -1000

`

`<unit id="millimolesPerCubicMeter" name="millimolesPerCubicMeter" unitType="amountOfSubstanceConcentration" abbreviation="mmol*m-3" parentSI="molesPerCubicMeter" multiplerToSI=".001">

concentration unit

`

`<unit id="micromolesPerLiter" name="micromolesPerLiter" unitType="amountOfSubstanceConcentration" parentSI="molesPerCubicMeter" multiplerToSI=".001">

concentration, same magnitude as micromolar (for a dissolved constituent)

`

`<unit id="microequivalentsPerLiter" name="microequivalentsPerLiter" unitType="amountOfSubstanceConcentration" parentSI="molesPerCubicMeter" multiplerToSI="">

concentration of charge (on dissolved ions). A single multiplier to SI is not possible, since conversion includes valence of ion.

`

`<unit id="siemensPerMeter" name="siemensPerMeter" unitType="conductance" abbreviation="S*m-1" parentSI="siemen" multiplerToSI="1">

conductivity unit, seawater

`

`<unit id="microsiemensPerCentimeter" name="microsiemensPerCentimeter" unitType="conductance" parentSI="siemen" multiplerToSI=".0001">

conductivity unit, freshwater

`

`<unit id="milligramsPerSquareMeterPerDay" name="milligramsPerSquareMeterPerDay" unitType="areaMassDensityRate" abbreviation="mgm-2d-1" parentSI="kilogramsPerSquareMeterPerSecond" multiplerToSI="8.64E10">

areal primary production rate, often in mg-Carbon for an integrated water column

`

`<unit id="kilogramsPerSquareMeterPerDay" name="kilogramsPerSquareMeterPerDay" unitType="areaMassDensityRate" abbreviation="kgm-2d-1" parentSI="kilogramsPerSquareMeterPerSecond" multiplerToSI="86400">

areal primary production rate, may be kg-DW, -Carbon or -nitrogen for kelp

`

`<unit id="milligramsPerCubicMeterPerDay" name="milligramsPerCubicMeterPerDay" unitType="volumetricMassDensityRate" abbreviation="mgm-3d-1" parentSI="" multiplerToSI="">

volumetric primary production rate, in a parcel of water

`

mbjones commented 7 years ago

Original Redmine Comment Author Name: Matt Jones (Matt Jones) Original Date: 2004-09-02T16:38:14Z


Changing QA contact to the list for all current EML bugs so that people can track what is happening.

mbjones commented 7 years ago

Original Redmine Comment Author Name: Redmine Admin (Redmine Admin) Original Date: 2013-03-27T21:17:45Z


Original Bugzilla ID was 1634

mobb commented 6 years ago

2018-06-28 line 1070 added inverseMeter, inverseCentimeter, deprecated waveNumber (in favor of inverseMeter)

mobb commented 6 years ago

Not adding: einsteins; recommendation is to use moles instead. added irradiance and spectral irradiance units in watts, also for solid angles. eg wattPerMeterSquaredPerSteradian, wattPerMeterSquaredPerNanometer (common ones from optics instruments only. a person could go nuts with these)

mobb commented 6 years ago

added

a few more concentration units:

mobb commented 6 years ago

and some primary production units (gotta have 'em): milligramPerMeterCubedPerDay milligramPerMeterSquaredPerDay these are for aquatic; the terrestrial units were already there.

mobb commented 6 years ago

TO DO: units are all added, but don't close till you review the descriptions. still finding copy-paste cruft.

mobb commented 6 years ago

descriptions ok. closing. yay.