Depth-dependent variables in WOD Code,Parameter,WOD standard unit or scale (nominal abbreviation),Dataset(s) where variable(s) is/are stored ,(nominal abbreviations) 1,Temperature,Degrees Celsius (°C),OSD; CTD; MBT; XBT; SUR; APB; MRB; PFL; UOR; DRB; GLD 2,Salinity,Dimensionless (unitless),OSD;CTD; SUR; MRB; PFL; UOR; DRB; GLD 3,Oxygen [O2],Milliliter per liter (ml l-1),OSD; CTD; PFL; UOR 4,Phosphate [HPO4-2],Micromole per liter (µM),OSD 6,Silicate [Si(OH)4],Micromole per liter (µM),OSD 8,Nitrate [NO3-] and Nitrate+Nitrite,Micromole per liter (µM),OSD 9,pH,Dimensionless,OSD; SUR 11,Total Chlorophyll [Chl] unless specified,Microgram per liter (µg l-1),OSD; CTD; SUR; UOR 17,Alkalinity [TALK] unless specified,Milliequivalent per liter (meq l-1),OSD; SUR 20,Partial pressure of carbon dioxide [pCO2],Microatmosphere (µatm),OSD; SUR 21,Dissolved Inorganic carbon [DIC],Millimole per liter (mM),OSD 24,Transmissivity (BAC)1,Per meter (m-1),CTD 25,Pressure,Decibar,OSD; CTD; UOR; GLD; PFL 26,Air temperature,Degree Celsius (°C),SUR 27,CO2warming,Degree Celsius (°C),SUR 28,xCO2atmosphere,Parts per million (ppm),SUR 29,Air pressure,Millibar (mbar),SUR 30,Latitude3,Degrees,SUR; APB; UOR 31,Longitude3,Degrees,SUR; APB; UOR 32,Julian year-day2;3,Day,SUR; APB; UOR 33,Tritium [3H],Tritium Unit (TU),OSD 34,Helium [He],Nanomol per liter (nM),OSD 35,Delta Helium-3 [3He],Percent (%),OSD 36,Delta Carbon-14 [14C],Per mille (‰),OSD 37,Delta Carbon-13 [13C],Per mille (‰),OSD 38,Argon [Ar],Nanomol per liter (nM),OSD 39,Neon [Ne],Nanomol per liter (nM),OSD 40,Chlorofluorocarbon 11 (CFC 11),Picomole per liter (pM),OSD 41,Chlorofluorocarbon 12 (CFC 12),Picomole per liter (pM),OSD 42,Chlorofluorocarbon 113 (CFC113),Picomole per liter (pM),OSD 43,Delta Oxygen-18 [18O],Per mille (‰),OSD Notes: 1 Beam Attenuation Coefficient,,, 2 Julian year-day is the decimal day for the year in which the observations were made (see Section I. F7),,, 3 Codes: 30; 31; and 32 (latitude; longitude; and Julian year-day respectively) are not depth-dependent variables and are not in WODselect.