[{"dataset_parameter_nid":"805584","supplied_name":"cruise","supplied_units":"unitless","value_format":null,"description":"\u003Cp\u003ECruise identifier\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":"","parameter_nid":"1102","parameter_description":"\u003Cp\u003Ecruise designation; name\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":"nd","parameter_official_name":"cruise_id","parameter_external_identifier":null,"parameter_short_description":"Cruise identfier","parameter_short_name":"cruise_id","parameter_units":"dimensionless","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805585","supplied_name":"ship","supplied_units":"unitless","value_format":null,"description":"\u003Cp\u003EShip name\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":"","parameter_nid":"969","parameter_description":"\u003Cp\u003Ename of the ship or vessel (see also \u003Ca href=\u0022https:\/\/www.bco-dmo.org\/parameter\/932\u0022 target=\u0022_blank\u0022\u003Eplatform\u003C\/a\u003E)\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":null,"parameter_official_name":"ship","parameter_external_identifier":null,"parameter_short_description":"ship","parameter_short_name":"ship","parameter_units":null,"parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805586","supplied_name":"ISO_DateTime_UTC","supplied_units":"unitless","value_format":null,"description":"\u003Cp\u003EDate and time formatted to ISO8601 standard. Format: yyyy-mm-ddTHH:MM:SSZ\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":null,"parameter_nid":"1908","parameter_description":"\u003Cp\u003EDate\/Time (UTC) ISO formatted\u003Cbr \/\u003E\nThis standard is based on ISO 8601:2004(E) and takes on any of the following forms:\u003Cbr \/\u003E\n2009-08-30T09:05:00[.xx] (local time)\u003Cbr \/\u003E\n2009-08-30T14:05:00[.xx]Z (UTC time)\u003Cbr \/\u003E\n2009-08-30T14:05:00[.xx]-05:00\u003Cbr \/\u003E\nThe dashes and the colons can be dropped.\u003Cbr \/\u003E\nThe T can also be dropped \u0022by mutual agreement\u0022, but one needs the trailing Z if the time is UTC.\u003C\/p\u003E\n\u003Cp\u003ESample ISO_datetime_utc:\u003Cbr \/\u003E\n2009-08-30T14:05:00[.xx]Z (UTC time)\u003C\/p\u003E\n\u003Cp\u003EFormat: YYYY-mm-ddTHH:MM:SS[.xx]Z (UTC time)\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":"nd","parameter_official_name":"ISO_DateTime_UTC","parameter_external_identifier":"http:\/\/vocab.nerc.ac.uk\/collection\/P01\/current\/DTUT8601\/","parameter_short_description":"ISO_DateTime_UTC","parameter_short_name":"ISO_DateTime_UTC","parameter_units":"YYYY-MM-DDTHH:MM:SS[.xx]Z","parameter_units_external_identifier":null,"order":null,"types":[{"type":"Primary ISODateTime variable","dataset_parameter_type_nid":"805848","type_rankable":"0","type_tid":"148"}]},{"dataset_parameter_nid":"805587","supplied_name":"date","supplied_units":"unitless","value_format":null,"description":"\u003Cp\u003EDate; format: yyyy-mm-dd\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":"","parameter_nid":"1070","parameter_description":"\u003Cp\u003Edate; generally reported in GMT as YYYYMMDD (year; month; day); also as MMDD (month; day); EqPac dates are local Hawaii time. ISO_Date format is YYYY-MM-DD (\u003Ca href=\u0022http:\/\/www.iso.org\/iso\/home\/standards\/iso8601.htm\u0022 target=\u0022_blank\u0022\u003Ehttp:\/\/www.iso.org\/iso\/home\/standards\/iso8601.htm\u003C\/a\u003E)\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":null,"parameter_official_name":"date","parameter_external_identifier":"http:\/\/vocab.nerc.ac.uk\/collection\/P01\/current\/ADATAA01\/","parameter_short_description":"date","parameter_short_name":"date","parameter_units":null,"parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805588","supplied_name":"time","supplied_units":"unitless","value_format":null,"description":"\u003Cp\u003ETime; format: HH:MM\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":"","parameter_nid":"1075","parameter_description":"\u003Cp\u003ETime GMT defined as HHMM; time of day; generally reported in GMT as HHMM (hours and minutes) but may also be HH.H (decimal hours) or HHMMSS (hours; minutes and seconds); in EqPac time is reported as Hawaii local time\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":"nd","parameter_official_name":"time","parameter_external_identifier":"http:\/\/vocab.nerc.ac.uk\/collection\/P01\/current\/AHMSAA01\/","parameter_short_description":"time of day","parameter_short_name":"time","parameter_units":"HHMM or HHMMSS","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805589","supplied_name":"latitude","supplied_units":"decimal degrees","value_format":null,"description":"\u003Cp\u003ELatitude; positive values = North\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":null,"parameter_nid":"730","parameter_description":"\u003Cp\u003Elatitude, in decimal degrees, North is positive, negative denotes South; Reported in some datasets as degrees, minutes\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":"nd","parameter_official_name":"latitude","parameter_external_identifier":"http:\/\/vocab.nerc.ac.uk\/collection\/P09\/current\/LATX\/","parameter_short_description":"latitude","parameter_short_name":"lat","parameter_units":"decimal degrees","parameter_units_external_identifier":null,"order":null,"types":[{"type":"Primary latitude variable","dataset_parameter_type_nid":"805846","type_rankable":"0","type_tid":"23"}]},{"dataset_parameter_nid":"805590","supplied_name":"longitude","supplied_units":"decimal degrees","value_format":null,"description":"\u003Cp\u003ELongitude; positive values = East\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":null,"parameter_nid":"731","parameter_description":"\u003Cp\u003Elongitude, in decimal degrees, East is positive, negative denotes West; Reported in some datsets as degrees, minutes\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":"nd","parameter_official_name":"longitude","parameter_external_identifier":"http:\/\/vocab.nerc.ac.uk\/collection\/P09\/current\/LONX\/ ","parameter_short_description":"longitude","parameter_short_name":"lon","parameter_units":"decimal degrees","parameter_units_external_identifier":null,"order":null,"types":[{"type":"Primary longitude variable","dataset_parameter_type_nid":"805847","type_rankable":"0","type_tid":"24"}]},{"dataset_parameter_nid":"805591","supplied_name":"depth_sample","supplied_units":"meters (m)","value_format":null,"description":"\u003Cp\u003EThe depth at which the niskin bottle was closed (from which seawater was collected for analysis)\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":null,"parameter_nid":"808","parameter_description":"\u003Cp\u003EObservation\/sample depth below the sea surface. Units often reported as: meters, feet.\u003C\/p\u003E\n\u003Cp\u003E\nWhen used in a JGOFS\/GLOBEC dataset the depth is a best estimate; usually but not always calculated from pressure; calculated either from CTD pressure using Fofonoff and Millard (1982; UNESCO Tech Paper #44) algorithm adjusted for 1980 equation of state for seawater (EOS80) or simply equivalent to nominal depth as recorded during sampling if CTD pressure was unavailable.\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":"nd","parameter_official_name":"depth","parameter_external_identifier":"http:\/\/vocab.nerc.ac.uk\/collection\/P09\/current\/DEPH\/","parameter_short_description":"depth","parameter_short_name":"depth","parameter_units":"various","parameter_units_external_identifier":null,"order":null,"types":[{"type":"Primary depth variable","dataset_parameter_type_nid":"805849","type_rankable":"0","type_tid":"22"}]},{"dataset_parameter_nid":"805592","supplied_name":"depth_ctd","supplied_units":"meters (m)","value_format":null,"description":"\u003Cp\u003EDepth of the nearest CTD sensor measurements, extracted from the continuous CTD files (where bottle files were not available)\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":null,"parameter_nid":"808","parameter_description":"\u003Cp\u003EObservation\/sample depth below the sea surface. Units often reported as: meters, feet.\u003C\/p\u003E\n\u003Cp\u003E\nWhen used in a JGOFS\/GLOBEC dataset the depth is a best estimate; usually but not always calculated from pressure; calculated either from CTD pressure using Fofonoff and Millard (1982; UNESCO Tech Paper #44) algorithm adjusted for 1980 equation of state for seawater (EOS80) or simply equivalent to nominal depth as recorded during sampling if CTD pressure was unavailable.\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":"nd","parameter_official_name":"depth","parameter_external_identifier":"http:\/\/vocab.nerc.ac.uk\/collection\/P09\/current\/DEPH\/","parameter_short_description":"depth","parameter_short_name":"depth","parameter_units":"various","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805593","supplied_name":"pressure_ctd","supplied_units":"decibars (db)","value_format":null,"description":"\u003Cp\u003EPressure\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":null,"parameter_nid":"732","parameter_description":"\u003Cp\u003Ewater pressure at measurement; depth reported as pressure; positive number increasing with water depth\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":"nd","parameter_official_name":"pressure","parameter_external_identifier":"http:\/\/vocab.nerc.ac.uk\/collection\/P01\/current\/PRESPR01\/","parameter_short_description":"water pressure","parameter_short_name":"press","parameter_units":"various","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805594","supplied_name":"temperature_ctd","supplied_units":"degrees Celsius","value_format":null,"description":"\u003Cp\u003ETemperature measured by CTD\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":"","parameter_nid":"733","parameter_description":"\u003Cp\u003Ewater temperature at measurement depth\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":null,"parameter_official_name":"temperature","parameter_external_identifier":"http:\/\/vocab.nerc.ac.uk\/collection\/P01\/current\/TEMPP901\/","parameter_short_description":"water temperature at measurement depth","parameter_short_name":"temp","parameter_units":"degrees Celsius, ITS 90","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805595","supplied_name":"salinity_ctd","supplied_units":"psu","value_format":null,"description":"\u003Cp\u003ESalinity measured by CTD\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":"","parameter_nid":"955","parameter_description":"\u003Cp\u003ESalinity: The amount (mass or quantity of matter) of salt per amount (volume or mass) of a body of water.\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":null,"parameter_official_name":"sal","parameter_external_identifier":"http:\/\/vocab.nerc.ac.uk\/collection\/P01\/current\/PSALST01\/","parameter_short_description":"salinity","parameter_short_name":"sal","parameter_units":"dimensionless","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805596","supplied_name":"oxygen_ctd","supplied_units":"milliliters per liter (ml\/l)","value_format":null,"description":"\u003Cp\u003EOxygen measured by CTD\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":"","parameter_nid":"910","parameter_description":"\u003Cp\u003Edissolved oxygen concentration\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":"nd","parameter_official_name":"dissolved Oxygen","parameter_external_identifier":null,"parameter_short_description":"dissolved Oxygen","parameter_short_name":"O2","parameter_units":"various","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805597","supplied_name":"fluorescence_ctd","supplied_units":"milligrams per cubic meter (mg\/m3)","value_format":null,"description":"\u003Cp\u003EFluorescence measured by CTD\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":"","parameter_nid":"835","parameter_description":"\u003Cp\u003EFluorescence. Indirect measure of pigment concentration.\u003C\/p\u003E\n\u003Cp\u003EUnits and collection method may vary. Units often reported in\u00a0milligrams\/meter^3 (mg\/m3) or micromoles per liter (ug\/L). Sometimes reported after being calibrated against extracted pigment concentrations.\u003C\/p\u003E\n\u003Cp\u003EIn JGOFS\/GLOBEC projects\u00a0fluorescence is measured from CTD instrument sensor.\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":null,"parameter_official_name":"fluorescence","parameter_external_identifier":"http:\/\/vocab.nerc.ac.uk\/collection\/P01\/current\/CPHLPM01\/","parameter_short_description":"fluorescence","parameter_short_name":"fluor","parameter_units":"various","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805598","supplied_name":"potdens_calc","supplied_units":"kilograms per cubic meter (kg\/m3)","value_format":null,"description":"\u003Cp\u003EPotential density, calculated from temperature and salinity\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":"","parameter_nid":"806","parameter_description":"\u003Cp\u003Edensity, in mass per unit volume\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":null,"parameter_official_name":"density","parameter_external_identifier":null,"parameter_short_description":"density","parameter_short_name":"density","parameter_units":"various","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805599","supplied_name":"MLD_calc","supplied_units":"meters (m)","value_format":null,"description":"\u003Cp\u003ECalculated mixed layer depth at each profile station, defined as the closest depth to the surface at which potential density is greater by greater than or equal to 0.03 kg\/m3 than the value at a reference depth of 11 m (the shallowest depth common to every CTD station), based on the criterion of de Boyer Mont\u00e9gut et al. (2004).\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":"","parameter_nid":"2011","parameter_description":"\u003Cp\u003EThe mixed-layer depth (MLD)\u003C\/p\u003E\n\u003Cp\u003ENote: The calculation used for MLD should be included in the metadata as the methodology for calculating this can vary. \u00a0For example, one definition is the maximum depth at which the sea-water density is less than the density at 5m + 0.1 kg m-3.\u003C\/p\u003E\n\u003Cp\u003EThe mixed-layer is the layer between the ocean surface and a depth usually ranging between 25 and 200m, where the density is about the same as at the surface. The mixed-layer owes its existence to the mixing initiated by waves and turbulence caused by the wind stress on the sea surface. An effect of mixing is to make both properties of water, temperature and salinity, and therefore density, more uniform. The penetration of mixing to a certain depth (the mixed-layer depth) mostly depends on the stability of the sea water and on the incoming energy from the wind. The more stable is the surface water, the less mixing occurs, and the shallower is the mixed-layer. Sea water stability in the near-surface is determined by the atmospheric fluxes through the ocean surface (wind stress, heat and fresh water exchange). A typical unstable configuration is when water is denser (\u201cheavier\u201d) at the surface than below. The mixing that ensues, for example with some impulse from waves or turbulence, renders the density more uniform and deepens the mixed-layer. In certain conditions occurring only in a few areas of the high-latitude seas (e.g. Labrador Sea in North Atlantic, Weddell Sea in the Antarctic waters), instability is so strong that denser surface water literally sinks and mixes over large depths reaching more than 1000m.\u003C\/p\u003E\n\u003Cp\u003EIn many situations, the mixed-layer can be identified with the layer of mixed temperature, when the salinity does not vary much with increasing depth in general. However, this becomes untrue as soon as for instance fresh water is exchanged between the ocean and the air above (evaporation or rain), which may create large salinity contrast.\u003C\/p\u003E\n\u003Cp\u003EThe mixed-layer is the oceanic surface zone that responds the most quickly and directly to atmospheric fluxes, and it is through the mixed-layer that such influence is transmitted to the whole ocean in the long term. Conversely, the mixed-layer is the part of the ocean through which the ocean influences directly the atmosphere. Many important processes occur within the mixed-layer, whether physical (e.g. direct wind-forcing of the ocean circulation), chemical (e.g. dissolution of incoming CO2 from the atmosphere), or biological (e.g. phytoplankton production).\u003C\/p\u003E\n\u003Cp\u003ESource: \u003Ca href=\u0022http:\/\/www.esr.org\/outreach\/glossary\/mixed_layer.html\u0022\u003Ehttp:\/\/www.esr.org\/outreach\/glossary\/mixed_layer.html\u003C\/a\u003E\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":"nd","parameter_official_name":"depth_mixed_layer","parameter_external_identifier":null,"parameter_short_description":"mixed layer depth","parameter_short_name":"depth_mixed_layer","parameter_units":"various","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805600","supplied_name":"d15N_avg_nitrate_nitrite","supplied_units":"per mil vs AIR","value_format":null,"description":"\u003Cp\u003EAverage d15N. d15N is the nitrogen isotopic composition of a sample (nitrate+nitrite) expressed in delta notation (d15N in units of per mil, \u2030) relative to atmospheric N2, where d15N = {[(15N\/14N)sample\/(15N\/14N)atmN2] \u2013 1} \u00d7 1000\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":null,"parameter_nid":"555819","parameter_description":"\u003Cp\u003Edelta 15N of nitrate plus nitrite\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":"nd","parameter_official_name":"15N of nitrate plus nitrite","parameter_external_identifier":null,"parameter_short_description":"delta 15N NO3+NO2","parameter_short_name":"d15N_NO3NO2","parameter_units":"per mil versus air","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805601","supplied_name":"d15N_stdev_nitrate_nitrite","supplied_units":"per mil vs AIR","value_format":null,"description":"\u003Cp\u003EStandard deviation of d15N (nitrate+nitrite)\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":null,"parameter_nid":"555819","parameter_description":"\u003Cp\u003Edelta 15N of nitrate plus nitrite\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":"nd","parameter_official_name":"15N of nitrate plus nitrite","parameter_external_identifier":null,"parameter_short_description":"delta 15N NO3+NO2","parameter_short_name":"d15N_NO3NO2","parameter_units":"per mil versus air","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805602","supplied_name":"d15N_n_nitrate_nitrite","supplied_units":"unitless","value_format":null,"description":"\u003Cp\u003ENumber of replicate measurements of d15N (nitrate+nitrite)\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":null,"parameter_nid":"1947","parameter_description":"\u003Cp\u003ENumber of replicate samples in an experimental procedure, test, or calculation.\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":"nd","parameter_official_name":"num_reps","parameter_external_identifier":null,"parameter_short_description":"number of replicates","parameter_short_name":"num_reps","parameter_units":"integer","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805603","supplied_name":"conc_avg_nitrate_nitrite","supplied_units":"micromolar (uM)","value_format":null,"description":"\u003Cp\u003EConcentration of nitrate+nitrite in a seawater sample\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":null,"parameter_nid":"902","parameter_description":"\u003Cp\u003ENitrate and Nitrite, \u00b5M (micromolar) or \u00b5g-at NO3-N and NO2-N\/l\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":null,"parameter_official_name":"NO3_NO2","parameter_external_identifier":null,"parameter_short_description":"nitrate plus nitrite","parameter_short_name":"NO3_NO2","parameter_units":"various","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805604","supplied_name":"conc_stdev_nitrate_nitrite","supplied_units":"micromolar (uM)","value_format":null,"description":"\u003Cp\u003EStandard deviation of nitrate+nitrite concentration\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":null,"parameter_nid":"902","parameter_description":"\u003Cp\u003ENitrate and Nitrite, \u00b5M (micromolar) or \u00b5g-at NO3-N and NO2-N\/l\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":null,"parameter_official_name":"NO3_NO2","parameter_external_identifier":null,"parameter_short_description":"nitrate plus nitrite","parameter_short_name":"NO3_NO2","parameter_units":"various","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805605","supplied_name":"conc_n_nitrate_nitrite","supplied_units":"unitless","value_format":null,"description":"\u003Cp\u003ENumber of replicate measurements of nitrate+nitrite concentration\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":null,"parameter_nid":"1947","parameter_description":"\u003Cp\u003ENumber of replicate samples in an experimental procedure, test, or calculation.\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":"nd","parameter_official_name":"num_reps","parameter_external_identifier":null,"parameter_short_description":"number of replicates","parameter_short_name":"num_reps","parameter_units":"integer","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805606","supplied_name":"d15N_avg_nitrate","supplied_units":"per mil vs AIR","value_format":null,"description":"\u003Cp\u003EAverage d15N. d15N is the nitrogen isotopic composition of a sample (nitrate only) expressed in delta notation (d15N in units of per mil, \u2030) relative to atmospheric N2, where d15N = {[(15N\/14N)sample\/(15N\/14N)atmN2] \u2013 1}  \u00d7 1000\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":"","parameter_nid":"1633","parameter_description":"\u003Cp\u003Edelta 15N of dissolved nitrate relative to atmospheric N2\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":"nd","parameter_official_name":"d15N_NO3","parameter_external_identifier":null,"parameter_short_description":"d15N_NO3","parameter_short_name":"d15N_NO3","parameter_units":"per mil (ppt)","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"805607","supplied_name":"d15N_stdev_nitrate","supplied_units":"per mil vs AIR","value_format":null,"description":"\u003Cp\u003EStandard deviation of d15N (nitrate only)\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":"","parameter_nid":"1633","parameter_description":"\u003Cp\u003Edelta 15N of dissolved nitrate relative to atmospheric 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