This file contains data from measurements of primary productivity. The data are collected to provide information on nutrient levels and nutrient flow in offshore areas. In addition to cruise information, position, date, time, sampling depths, bottom depth, and environmental information, this file may contain measured parameters including: concentrations of nutrients such as phosphate, nitrate, silicate, and ammonia; temperature and salinity; and carbon assimilation. Measurements of chlorophyll A, phaeopigment, and carbon assimilation may be reported as integrated values. A free-text record is available for comments.
Four 84-character records: (1) File Header Record, (2) Master Record, (3) Detail Record, and (4) Text Record.
| PARAMETER | DESCRIPTION | STARTING COLUMN | FIELD LENGTH | |
|---|---|---|---|---|
| FILE HEADER RECORD | ||||
| NODC FILE NUMBER | ALWAYS '029' | 1 | 3 | |
| NODC TRACK NUMBER | 6-CHARACTER UNIQUE CRUISE OR DATA SET IDENTIFIER ASSIGNED BY NODC | 4 | 6 | |
| RECORD NUMBER | ALWAYS '0' | 10 | 1 | |
| VESSEL | ELEVEN-CHARACTER FIELD FOR VESSEL NAME DETERMINED BY THE ORIGINATOR | 11 | 11 | |
| CRUISE | SIX-CHARACTER FIELD FOR CRUISE NUMBER ASSIGNED BY THE ORIGINATOR | 22 | 6 | |
| BEGIN CRUISE DATE (GMT) | YYYY/MM/DD | 28 | 10 | |
| BLANK | ONE BLANK | 38 | 1 | |
| END CRUISE DATE (GMT) | YYYY/MM/DD | 39 | 10 | |
| SENIOR SCIENTIST | 19-CHARACTER FIELD FOR SCIENTISTS NAME | 49 | 19 | |
| INVESTIGATOR/INSTITUTION | 17-CHARACTER FIELD FOR INVESTIGATOR OR INSTITUTION NAME | 68 | 17 | |
| PARAMETER | DESCRIPTION | STARTING COLUMN | FIELD LENGTH | |
| MASTER RECORD | ||||
| NODC FILE NUMBER | ALWAYS '029' | 1 | 3 | |
| NODC TRACK NUMBER | 6-CHARACTER UNIQUE CRUISE OR DATA SET IDENTIFIER ASSIGNED BY NODC | 4 | 6 | |
| RECORD NUMBER | ALWAYS '1' | 10 | 1 | |
| STATION NUMBER | FIVE-CHARACTER FIELD ASSIGNED BY THE ORGINATOR - ALSO INCLUDED IN RECORD TYPE 3 AND 4 | 11 | 5 | |
| LATITUDE | DDMMSS (DEGREES, MINUTES, SECONDS) | 16 | 6 | |
| LATITUDE HEMISPHERE | 1-CHARACTER CODE - 'N' OR 'S' | 22 | 1 | |
| LONGITUDE | DDDMMSS (DEGREES, MINUTES, SECONDS) | 23 | 7 | |
| LONGITUDE HEMISPHERE | 1-CHARACTER CODE - 'E' OR 'W' | 30 | 1 | |
| DATE (GMT) | YYYYMMDD | 31 | 8 | |
| TIME (GMT) | XXXX (HOURS AND MINUTES) | 39 | 4 | |
| TIME ZONE | XX - PRECEDED BY + OR - SIGN | 43 | 3 | |
| DEPTH TO BOTTOM | XXXXX (WHOLE METERS) | 46 | 5 | |
| CHLOROPHYLL A (INTEGRATED) | XXXX (MILLIGRAMS PER SQ METER TO TENTHS) | 51 | 4 | |
| PHAEOPIGMENTS (INTEGRATED) | XXXX (MILLIGRAMS PER SQ METER TO TENTHS) | 55 | 4 | |
| CARBON ASSIMILATION (INTEGRATED) | XXXXX (MILLIGRAMS PER SQ METER TO TENTHS PER DAY) | 59 | 5 | |
| ONE PERCENT LIGHT DEPTH | XXX (WHOLE METERS) | 64 | 3 | |
| PHOSPHATE PO4-P REACTIVE TIME | XX (MINUTES) | 67 | 2 | |
| PH SCALE | ONE-DIGIT CODE FOR INDICATING TYPE OF SCALE USED - USE NODC CODE 0183 | 69 | 1 | |
| IN-SITU CORRECTIONS FOR PH | ONE-DIGIT CODE FOR INDICATING CORRECTION STATUS - USE NODC CODE 0184 | 70 | 1 | |
| SECCHI DEPTH | XX - GREATEST DEPTH THAT SECCHI DISC CAN BE OBSERVED - (WHOLE METERS) | 71 | 2 | |
| MIXED LAYER DEPTH | XXX (WHOLE METERS) | 73 | 3 | LIGHT LEVEL (ABOARD PLATFORM) | XXX - (LANGLEYS/DAY) | 76 | 3 |
| QUANTA | XXXX - MICRO-EINSTEINS PER SQ METER PER DAY TO THREE DIGITS - 4TH COLUMN (80) IS FOR EXPONENT - ALL UNITS WILL BE POSITIVE VALUES | 79 | 4 | |
| BLANKS | 83 | 2 | ||
| PARAMETER | DESCRIPTION | STARTING COLUMN | FIELD LENGTH | |
| DETAIL RECORD | ||||
| NODC FILE NUMBER | ALWAYS '029' | 1 | 3 | |
| NODC TRACK NUMBER | 6-CHARACTER UNIQUE CRUISE OR DATA SET IDENTIFIER ASSIGNED BY NODC | 4 | 6 | |
| RECORD NUMBER | ALWAYS '3' | 10 | 1 | |
| STATION NUMBER | SEE RECORD '1' | 11 | 5 | |
| DEPTH OF SAMPLE | XXXXX (METERS TO TENTHS) | 16 | 5 | |
| CHLOROPHYLL A CONCENTRATION | XXXX (MILLIGRAMS PER CUBIC METER TO HUNDREDTHS) | 21 | 4 | |
| PHAEOPIGMENT CONCENTRATION | XXXX (MILLIGRAMS PER CUBIC METER TO HUNDREDTHS) | 25 | 4 | |
| CARBON ASSIMILATION | XXXXX (MILLIGRAMS OF CARBON PER CUBIC METER PER HOUR | 29 | 5 | |
| ELAPSED TIME OF INCUBATION | XXXX (HOURS AND MINUTES) | 34 | 4 | |
| OXYGEN | XXXX (MILLILITERS/L TO HUNDREDTHS) | 38 | 4 | |
| PHOSPHATE PO4-P (INORGANIC) | XXXX (MICROGRAM-ATOMS/L TO HUNDREDTHS) | 42 | 4 | |
| AMMONIA NH3-N | XXX (MICROGRAM-ATOMS/L TO TENTHS) | 46 | 3 | |
| NITRATE NO3-N | XXX (MICROGRAM-ATOMS/L TO TENTHS) | 49 | 3 | |
| NITRITE NO2-N | XXX (MICROGRAM-ATOMS/L TO HUNDREDTHS) | 52 | 3 | |
| SILICATE SIO3-SI | XXXXX (MICROGRAM-ATOMS/L TO TENTHS) | 55 | 5 | |
| PH | XXX - TO HUNDREDTHS | 60 | 3 | |
| ALKALINITY, TOTAL | XXXX (MILLEQUIVALENTS PER LITER TO THOUSANDTHS) | 63 | 4 | |
| TEMPERATURE | XXXX-NEGATIVE TEMPERATURE ARE PRECEDED BY A MINUS SIGN ADJACENT TO TEMPERATURE VALUE (DEG C TO HUNDREDTHS) | 67 | 4 | |
| SALINITY | XXX (PARTS PER THOUSAND OR PRACTICAL SALINITY UNITS - TO HUNDREDTHS) | 75 | 3 | |
| BLANKS | 75 | 3 | ||
| SEQUENCE NUMBER | XXX - USED FOR SORTING DATA RECORDS | 78 | 3 | |
| BLANKS | 81 | 4 | ||
| PARAMETER | DESCRIPTION | STARTING COLUMN | FIELD LENGTH | |
| TEXT RECORD | ||||
| NODC FILE NUMBER | ALWAYS '029' | 1 | 3 | |
| NODC TRACK NUMBER | 6-CHARACTER UNIQUE CRUISE OR DATA SET IDENTIFIER ASSIGNED BY NODC | 4 | 6 | |
| RECORD NUMBER | ALWAYS '4' | 10 | 1 | |
| STATION NUMBER | SEE RECORD '1' | 11 | 5 | |
| TEXT | 62-CHARACTER FIELD FOR COMMENTS OR PERTINENT INFORMATION | 16 | 62 | |
| SEQUENCE NUMBER | XXX - USED FOR SORTING TEXT RECORDS OR INSERTING WITH DATA RECORDS | 78 | 3 | |
| BLANKS | 81 | 4 |
| 0183 | PH SCALE |
|---|---|
| 1 | -- NBS PH SCALE |
| 2 | -- SORENSEN PH SCALE |
| 3 | -- HANSSON PH SCALE |
| 0184 | IN SITU CORRECTIONS |
| 1 | -- TEMPERATURE AND PRESSURE CORRECTION HAVE BEEN MADE |
| 2 | -- NO CORRECTIONS MADE |