APPENDIX A 



OCEANOGRAPHIC DATA 



A complete description of the codes utilized in the tabulation of oceanographic station data can be found in 

 National Oceanographic Data Center publication M-2, Processing Physical and Chemical Data from Oceanographic 

 Stations. (Rev. August 1964, supplement issued May 1966.) 



To facilitate use of the oceanographic station data listing, entry headings which are not self-explanatory are 

 described below. 



Depth to Bottom . Corrected or uncorrected sounding in meters. 



Max. Depth of Samples Depth of deepest sample to nearest multiple of one hundred meters. 



Wave observations: 



DIR Round to nearest multiple of ten degrees. 



HGT In increments of Vi m. Sum of 5 meters plus increments of % m if 50 is added to 



direction. 

 PER If numerals 2 through 9 are entered, period in seconds is twice the numeric entry or 



2x (numeric entry) -f 1. For other entries see WMO Code 3155. 



SEA Sea state according to WMO Code 3700. 



Weather Code — _ If preceded by X, weather according to WMO Code 4501. If a two-digit entry, 



weather according to WMO Code 4677. 

 Cloud Code: 



Type Cloud type according to WMO Code 0500. 



Amount Cloud amount in eights. Entry of the numeral 9 indicates cloud amount could not 



be estimated. 

 Water: 



Color Code Color according to Forel-Ule scale. 



Trans Transparency in whole meters as determined by Secchi disc. 



Wind: 



Dir. Rounded to nearest multiple of ten degrees. 



Speed or Force If preceded by letter S, wind speed in knots, if preceded by letter F, wind force 



according to Beaufort scale. 



Barometer Barometric pressure given in tens, units and tenths of millibars. 



Air Temp. °C _ Air temperature to tenths of a degree centigrade. 



Vis. Code Visibility according to WMO Code 4300. 



No obs. depths Number of observed levels associated with the station. 



Messenger time _ Entered in hours and tenths of an hour GMT. For Nansen casts, indicates time of 



release of messenger applicable to the observational level. For STD casts, indicates 



the starting time of lowering the sensor. 

 Card type OBS designates observed levels. STD indicates the values at this standard level were 



interpolated by a modified 3-point LaGrange formula. 

 Depth (m) _ Depth to nearest meter. A postscript T indicates depth was obtained thermometrically; 



S indicates uncorrected "wire out" depth. Postscript Q indicates value was marked 



doubtful by originator; P indicates value was considered doubtful by NODC. 



Postscripts P and Q retain this meaning throughout the following entries. 



T °C Temperature to hundredths of a degree Centigrade. 



S %o Salinity in parts-per-thousand. 



SIGMA-T Entered to hundredths. 



Specific-volume 



Anomaly — X 10' Multiply entry by 10-" to obtain specific-volume anomaly in cubic centimeters per gram. 



2 AD Dyn. M x 10^ Multiply entry by 10-^ to obtain anomaly of dynamic height in dynamic meters refer- 

 enced to the sea surface. 



Sound Velocity Sound velocity according to Wilson's formula entered to tenths of a meter per second. 



O2 ml/1 Dissolved oxygen in milliliters per liter entered to hundredths. 



PO^-P /ig-at/1 — Inorganic phosphate in microgram-atoms per liter entered to hundredths. 



Total-P ^g-at/1 Total phosphorus in microgram-atoms per liter entered to hundredths. 



NO2-N ^g-at/1 Nitrite-nitrogen in microgram-atoms per liter entered to hundredths. 



NO3-N ^g-at/I Nitrate-nitrogen in microgram-atoms per liter entered to tenths. 



SiO^-Si /ig-at/1 Silicate-silicon in microgram-atoms per liter entered to whole units. 



pH Entered to hundredths. 



26 



