PERSEUS | Data Management | units Conversion

Units Conversions

Units conversion option available for download a bulk of data in MS Access format.
Measurements data of parameters will be converted into a single unit per BODC suggestion: mapping between P01 to P06 vocabularies.

To use units conversion option:

1.	Log in into the system
2.	Select data for download on interactive map page and click 'Download'
3.	On the next download request page select 'Convert parameters data to a single default unit where possible' check box and click 'Submit Download Request'
4.	System will send you email with a link to MS Access file generated per your request (could take 0.5 – 3 hours)
5.	In resulted MS Access file, check List_Param_In_Casts table, Conversion_Method column to inspect data of which parameters was converted and how.
6.	In resulted MS Access file, each data table in addition to converted values will include original values.

Units Conversion Formulas

The following formulas are used for units conversion:

{source} will be replaced with an original measurement value.
{Molecular_Weight} and {Valence} will be replaced with a specific material values from Conversion Coefficients table below.

P06 (from)	P06 (to)	Conversion	Formula
KGUM	UPOX	Micromoles per kilogram -> Micromoles per litre	{source}*[SIGT]
KGUM	UMLL	Micromoles per kilogram -> Millilitres per litre	{source}{Molecular_Weight}[SIGT]/1000
KGUM	UEQL	Micromoles per kilogram -> MicroEquivalents per litre	{source}{Molecular_Weight}{Molecular_Weight}*[SIGT]/{Valence}
MEQL	UPOX	MilliEquivalents per litre -> Micromoles per litre	{source}*1000/{Valence}
MEQL	UEQL	MilliEquivalents per litre -> MicroEquivalents per litre	{source}*1000
MMPL	UPOX	Millimoles per litre -> Micromoles per litre	{source}*1000
MMPL	UPNM	Millimoles per litre -> Nanomoles per litre	{source}*1000000
MMPL	KGUM	Millimoles per litre -> Micromoles per kilogram	{source}*1000/[SIGT]
UAAA	UABB	Degrees -> Degrees True	{source}
UCCL	UGDC	Milligrams of carbon per milligram of chlorophyll per hour -> Milligrams per cubic metre per day	{source}
UCCL	UGDC	Milligrams of carbon per milligram of chlorophyll per hour -> Milligrams per cubic metre per day	{source}
UCCL	UGDX	Milligrams of carbon per milligram of chlorophyll per hour -> Milligrams per square metre per day	{source}
UCCL	UPMH	Milligrams of carbon per milligram of chlorophyll per hour -> Picomoles per litre per hour	{source}
UCPL	UCML	Number per litre -> Number per millilitre	{source}/1000
UCPL	UUUU	Number per litre -> Dimensionless	{source}
UGLH	UGDX	Milligrams per cubic metre per hour -> Milligrams per square metre per day	{source}*24
UGM3	UMMH	Micrograms per cubic metre per hour -> Micromoles per litre per hour	{source}/{Molecular_Weight}/1000
UGM3	UGDC	Micrograms per cubic metre per hour -> Milligrams per cubic metre per day	{source}*24/1000
UGMC	UMGL	Grams per cubic metre -> Milligrams per litre	{source}
UGPL	UPOX	Micrograms per litre -> Micromoles per litre	{source}/{Molecular_Weight}
UGPL	UMMC	Micrograms per litre -> Milligrams per cubic metre	{source}
UGPL	UGMC	Micrograms per litre -> Grams per cubic metre	{source}/1000
UGPL	UUUU	Micrograms per litre -> Dimensionless	{source}
UGPL	UMGL	Micrograms per litre -> Milligrams per litre	{source}/1000
UKWN	UUUU	Not known -> Dimensionless	{source}
UKWN	UMIC	Not known -> Micrometres (microns)	{source}
UMBQ	UBQL	Millibequerels per litre -> Bequerels per litre	{source}/1000
UMES	UFAA	MicroEinsteins per square metre per second -> Watts per square metre	{source}
UMGL	KGUM	Milligrams per litre -> Micromoles per kilogram	{source}/{Molecular_Weight}/[SIGT]*1000
UMGL	KGPS	Milligrams per litre -> Kilogram per second	{source}
UMGL	UEQL	Milligrams per litre -> MicroEquivalents per litre	{source}{Molecular_Weight}/{Valence}1000
UMGL	UMMC	Milligrams per litre -> Milligrams per cubic metre	{source}/1000
UMGL	UPOX	Milligrams per litre -> Micromoles per litre	{source}*1000/{Molecular_Weight}
UMGL	UGMC	Milligrams per litre -> Grams per cubic metre	{source}
UMGL	UPPT	Milligrams per litre -> Parts per thousand	{source}/[SIGT]
UMLL	KGUM	Millilitres per litre -> Micromoles per kilogram	{source}/{Molecular_Weight}*1000
UMLL	UPOX	Millilitres per litre -> Micromoles per litre	{source}/{Molecular_Weight}[SIGT]1000
UMLL	UPPT	Millilitres per litre -> Parts per thousand	{source}
UMLL	UPCT	Millilitres per litre -> Percent	{source}*10
UMLV	KGUM	Parts per million by volume -> Micromoles per kilogram	{source}
UMMC	UNGL	Milligrams per cubic metre -> Nanograms per litre	{source}*1000
UMMC	UUUU	Milligrams per cubic metre -> Dimensionless	{source}
UMMC	UMKG	Milligrams per cubic metre -> Milligrams per kilogram	{source}/[SIGT]/1000
UMMC	UPOX	Milligrams per cubic metre -> Micromoles per litre	{source}/{Molecular_Weight}
UMMC	UGMS	Milligrams per cubic metre -> Grams per square metre	{source}/1000
UMMC	UMMS	Milligrams per cubic metre -> Milligrams per square metre	{source}
UMMC	UPCT	Milligrams per cubic metre -> Percent	{source}/1.026*10000
UMMC	UGPL	Milligrams per cubic metre -> Micrograms per litre	{source}
UMPM	UPOX	Micromoles per mole -> Micromoles per litre	{source}/{Molecular_Weight}*[SIGT]/1000
UPCT	KGPM	Percent -> Picomoles per kilogram	{source}/{Molecular_Weight}*100
UPCT	UPPT	Percent -> Parts per thousand	{source}*10
UPMM	UCML	Number per cubic metre -> Number per millilitre	{source}/1000000
UPMM	UCPL	Number per cubic metre -> Number per litre	{source}/1000
UPMM	UPMS	Number per cubic metre -> Number per square metre	{source}
UPNM	UPOX	Nanomoles per litre -> Micromoles per litre	{source}/1000
UPOX	UPNM	Micromoles per litre -> Nanomoles per litre	{source}*1000
UPOX	KGUM	Micromoles per litre -> Micromoles per kilogram	{source}/[SIGT]
UPOX	UEQL	Micromoles per litre -> MicroEquivalents per litre	{source}{Molecular_Weight}{Molecular_Weight}/{Valence}
UPOX	UMLL	Micromoles per litre -> Millilitres per litre	{source}{Molecular_Weight}[SIGT]/1000
UPOX	UPPT	Micromoles per litre -> Parts per thousand	{source}{Molecular_Weight}[SIGT]/1000
UPOX	UMMC	Micromoles per litre -> Milligrams per cubic metre	{source}*{Molecular_Weight}
UPPM	UPOX	Parts per million -> Micromoles per litre	{source}/{Molecular_Weight}*[SIGT]
UPPT	UPOX	Parts per thousand -> Micromoles per litre	{source}/{Molecular_Weight}[SIGT]1000
UPPT	UUUU	Parts per thousand -> Dimensionless	{source}
UPRM	UPCT	per metre -> Percent	{source}
USPC	UUUU	Not specified -> Dimensionless	{source}
UVAA	UVBB	Metres per second ->Centimetres per second	{source}*100
UVLT	UUUU	Volts -> Dimensionless	{source}
UNMD	UMDX	Nanomoles per litre per day -> Millimoles per square metre per day	{source}/1000
UMBQ	UUTU	Millibequerels per litre -> Tritium units (10**18H/Tr)	{source}
UMLV	UATM	Parts per million by volume -> Microatmospheres	{source}
MEQL	KGUM	MilliEquivalents per litre -> Micromoles per kilogram	{source}{Valence}/{Molecular_Weight}/{Molecular_Weight}/[SIGT]1000
UGM3	UPMH	Micrograms per cubic metre per hour -> Picomoles per litre per hour	{source}/{Molecular_Weight}
UPML	KGPM	Picomoles per litre -> Picomoles per kilogram	{source}/[SIGT]
UKWN	UVLT	Not known -> Volts	{source}
UGPL	UVLT	Micrograms per litre -> Volts	{source}
USPC	UVLT	Not specified -> Volts	{source}
UPNM	KGNM	Nanomoles per litre -> Nanomoles per kilogram	{source}/[SIGT]
UAAA	UVBB	Degrees -> Centimetres per second	{source}
UMMC	UPNM	Milligrams per cubic metre -> Nanomoles per litre	{source}/{Molecular_Weight}*1000
UMGL	UUUU	Milligrams per litre -> Dimensionless	{source}
UGMC	USTU	Grams per cubic metre -> Nephelometric Turbidity Units	{source}
UPCT	UPOX	Percent -> Micromoles per litre	{source}/{Molecular_Weight}/[SIGT]*100
UUPH	KGUM	pH units -> Micromoles per kilogram	{source}
UPCT	UPRM	Percent -> per metre	{source}
ULAA	UPDB	Metres -> Decibars	{source}*[SIGT]
UMLV	UPOX	Parts per million by volume -> Micromoles per litre	{source}
UGLH	UGDC	Milligrams per cubic metre per hour -> Milligrams per cubic metre per day	{source}*24
UGPL	USTU	Micrograms per litre -> Nephelometric Turbidity Units	{source}
UMGL	USTU	Milligrams per litre -> Nephelometric Turbidity Units	{source}
UUUU	UPPT	Dimensionless -> Parts per thousand	{source}

Conversion Coefficients

P01	Parameter	{Molecular_Weight}	{Valence}
ALKYZZXX	total alkalinity
AMONZZXX	ammonium {NH4}	18	1
BPRDCVXX	carbon (organic)	12.0107	4
CORGZZZX	carbon (organic) {DOC}	12.0107	4
DOXMZZXX	oxygen {O2}	31.998	8
DOXYSU01	oxygen {O2}	31.998	8
DOXYSU02	oxygen {O2}	31.998	8
DOXYWITX	oxygen {O2}	31.998	8
DOXYZZ01	oxygen {O2}	31.998	8
DOXYZZXX	oxygen {O2}	31.998	8
IWCOLXXX	iodine	126.9045	7
MCLPP012	chlorine {Cl}	35.453	7
MDMAP010	carbon (organic) {POC}	12.0107	4
MDMAP013	nitrogen (total)	14.0067	3
MDMAPER1	trichlorofluoromethane {freon-11 or CFC-11}	137.37
MDMAPER2	dichlorodifluoromethane {freon-12 or CFC-12}	120.91
MDMAPER3	1,1,2-trichloro-1,2,2-trifluoroethane {freon-113 or CFC-113}	187.375
NTOTZZZZ	nitrogen (total) {PON}	14.0067	5
NTRAKGTX	nitrate {NO3}	62.0049	24
OXYSZZ01	oxygen {O2}	31.998	8
OXYSZZ02	oxygen {O2}	31.998	8
SLCAAATX	silicate {SiO4}	122.06	2
TCO2MSXX	carbon (total inorganic) {TCO2}	44.0095	6
TCO2ZZXX	carbon (total inorganic) {TCO2}	44.0095	6
TNRPDCTX	carbon (inorganic) {DIC respiration}	12.0107	4
TOCHWCZZ	carbohydrates (total)
TPHSDSZZ	phosphorus	30.97376	5
TPHSVLPT	phosphorus	30.97376	5

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