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See dataset for units of measurement; often reported in:\u00a0milligrams per cubic meter (mg\/m3); micrograms\/liter (ug\/L); nanograms\/liter\u00a0(ng\/L).\u003C\/p\u003E\n\u003Cp\u003ECAUTION Within JGOFS MERGED water column products: this parameter is derived from HPLC methodology and the units are nanograms\/liter; however; this parameter name is also used for a variety of water and nonwater column sampling; derived via the fluorometric method; units will also vary.\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":null,"parameter_official_name":"chlorophyll a","parameter_external_identifier":"http:\/\/vocab.nerc.ac.uk\/collection\/P01\/current\/CPHLHPP1\/","parameter_short_description":"chlorophyll a","parameter_short_name":"chl_a","parameter_units":"various","parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"7175","supplied_name":"day","supplied_units":"n\/a","value_format":null,"description":"\u003Cp\u003E Day\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":null,"parameter_nid":"1073","parameter_description":"\u003Cp\u003EAn association with a community-wide standard parameter has not yet been made.\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":null,"parameter_official_name":"no_bcodmo_term","parameter_external_identifier":null,"parameter_short_description":"No BCO-DMO term","parameter_short_name":"no_bcodmo_term","parameter_units":null,"parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"7176","supplied_name":"depth","supplied_units":"meters","value_format":null,"description":"\u003Cp\u003E Sample depth\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 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\u0027silicate\u0027)\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":null,"parameter_official_name":"SiOH_4","parameter_external_identifier":null,"parameter_short_description":"Silicate, Si(OH)4, silicic acid","parameter_short_name":"Silicate","parameter_units":null,"parameter_units_external_identifier":null,"order":null},{"dataset_parameter_nid":"7188","supplied_name":"station_std","supplied_units":"n\/a","value_format":null,"description":"\u003Cp\u003E Standard station number\u003C\/p\u003E\n","no_data_value":"nd","conversion_necessary":"no","conversion_utility":null,"parameter_nid":"989","parameter_description":"\u003Cp\u003Estandard broad-scale station number\u003C\/p\u003E\n","parameter_max_value":null,"parameter_min_value":null,"parameter_nd_value":null,"parameter_official_name":"station_std ","parameter_external_identifier":null,"parameter_short_description":"station_std ","parameter_short_name":"station_std 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