I 



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 Rounded to nearest multiple of ten degrees. 



HGT. 



PER- 



SEA _ 



Weather Code- 

 Cloud Code 



Type 



Amount..„ 



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



direction. 

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



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

 Sea state according to WMO Code 3700. 

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



weather according to WMO Code 4677. 



Cloud type according to WMO Code 0500. 



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

 be estimated. 



Color according to Forel-Ule scale. 



Transparency in whole meters as determined by Secchi disc. 



Rounded to nearest multiple of ten degrees. 



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



according to Beaufort scale. 

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

 Air temperature to tenths of a degree centigrade. 

 Visibility according to WMO Code 4300. 

 Number of observed levels associated with the station. 



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. 

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



interpolated by a modified 3-point LaGrange formula. 

 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 %a - Salinity in parts-per-thousand. 



SIGMA-T __ Entered to hundredths. 



Specific-volume _._ Multiply entry by 10-^ to obtain specific-volume anomaly in cubic centimeters per gfram. 



Anomaly — X 10^ 



SAD Dyn. M X 10' Multiply entry by lO-^ 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. 



PO4-P /jg-at/L... Inorganic phosphate in microgram-atoms per liter entered to hundredths. 



Water 



Color Code 



Trans 



Wind 



Dir-.. _ 



Speed or Force 



Barometer 



Air Temp. °C 



Vis. Code - 



No obs. depths- .. 

 Messenger time 



Card type 



Depth (m) 



Total-P /ig-at/L 

 NO2-N ^g-at/l_. 

 NO3-N ^g-at/l_. 

 Si04-Si /ig-at/L. 

 pH 



Total phosphorus in microgram-atoms per liter entered to hundredths. 

 Nitrite-nitrogen in microgram-atoms per liter entered to hundredths. 

 Nitrate-nitrogen in microgram-atoms per liter entered to tenths. 

 Silicate-silicon in microgram-atoms per liter entered to whole units. 

 Entered to hundredths. 



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