Marine Chemistry (F069)
This file format is used for data from chemical analyses of seawater samples.
Cruise information, position, date, and time is reported for each station along
with sample depth, temperature, salinity, and density (sigma-t). Chemical and
biochemical parameters that may be reported include: dissolved oxygen, nitrate,
nitrite, ammonia, inorganic phosphate, and silicate; dissolved organic carbon,
particulate organic carbon, and particulate organic nitrogen; and apparent
oxygen utilization, percent oxygen saturation, adenosine triphosphate, total
phaeophytin, total chlorophyll, total suspended matter, total recoverable
petroleum hydrocarbons, and total resolved light hydrocarbons.
File Structure:
Six 84-character records: (1) File Header Record, (2) First Sample Header
Record, (3) Data Record 1, (4) Data Record 2, (5) Data Record 3, (6) Data
Record 4, and (7) Text Record.
File Format:
Marine Chemistry (F069)
| PARAMETER |
DESCRIPTION |
STARTING COLUMN |
FIELD LENGTH |
| FILE HEADER RECORD | | | |
| NODC FILE NUMBER | ALWAYS '069' | 1 | 3 |
| NODC TRACK NUMBER | 6-CHARACTER UNIQUE CRUISE OR DATA SET IDENTIFIER ASSIGNED BY NODC | 4 | 6 |
| RECORD NUMBER | ALWAYS '1' | 10 | 1 |
| VESSEL | ELEVEN-CHARACTER FIELD FOR VESSEL NAME | 11 | 11 |
| CRUISE | SIX-CHARACTER ORIGINATOR'S CRUISE IDENTIFICATON (LEFT ALIGNED) | 22 | 6 |
| BEGIN CRUISE DATE | MM/DD/YYYY | 28 | 10 |
| BLANK | | 38 | 1 |
| END CRUISE DATE | MM/DD/YYYY | 39 | 10 |
| SENIOR SCIENTIST | 19-CHARACTER FIELD FOR SCIENTIST NAME | 49 | 19 |
| INVESTIGATOR/INSTITUTION | 17-CHARACTER FIELD FOR INVESTIGATOR OR INSTITUTION NAME | 68 | 17 |
| PARAMETER |
DESCRIPTION |
STARTING COLUMN |
FIELD LENGTH |
| FIRST SAMPLE HEADER RECORD | | | |
| NODC FILE NUMBER | ALWAYS '069' | 1 | 3 |
| NODC TRACK NUMBER | 6-CHARACTER UNIQUE CRUISE OR DATA SET IDENTIFER ASSIGNED BY NODC | 4 | 6 |
| RECORD NUMBER | ALWAYS '2' | 10 | 1 |
| SEQUENCE | XXX - ASCENDING NUMERIC | 11 | 3 |
| CAST NUMBER | THREE-CHARACTER STATION IDENTIFIER | 14 | 3 |
| NUMBER OF CASTS | SIX-CHARACTERS USED TO REPRESENT THE NUMBER OF CASTS USED TO MAKE UP A STATION. EX. 35-37 REPRESENTS 3 CASTS | 17 | 6 |
| LATITUDE | DDMMX (DEGREES, MINUTES TO TENTHS) | 23 | 5 |
| LATITUDE HEMISPHERE | 1-CHARACTER CODE 'N' OR 'S' | 28 | 1 |
| LONGITUDE | DDDMMX (DEGREES, MINUTES TO TENTHS) | 29 | 6 |
| LONGITUDE HEMISPHERE | 1-CHARACTER CODE 'E' OR 'W' | 35 | 1 |
| DATE (GMT) | YYYYMMDD | 36 | 8 |
| TIME (GMT) | XXX - HOURS TO TENTHS | 44 | 3 |
| DEPTH TO BOTTOM | XXXX - WHOLE METERS | 47 | 4 |
| SALINITY METHOD | ONE-CHARACTER CODE - ('P'= PRACTICAL SALINITY, 'S'=SALINITY, BLANK = NOT SPECIFIED | 51 | 1 |
| STATION IDENTIFIER | 10-CHARACTER ORIGINATOR STATION IDENTIFIER | 52 | 10 |
| BLANKS | | 62 | 23 |
| PARAMETER |
DESCRIPTION |
STARTING COLUMN |
FIELD LENGTH |
| DATA RECORD 1 | | |
| NODC FILE NUMBER | ALWAYS '069' | 1 | 3 |
| NODC TRACK NUMBER | 6-CHARACTER UNIQUE CRUISE OR DATA SET IDENTIFER ASSIGNED BY NODC | 4 | 6 |
| RECORD NUMBER | ALWAYS '3' | 10 | 1 |
| SEQUENCE | SEE RECORD '2' | 11 | 3 |
| CAST NUMBER | SEE RECORD '2' | 14 | 3 |
| SAMPLE DEPTH | XXXX - WHOLE METERS | 17 | 4 |
| TEMPERATURE | XXXX NEGATIVE TEMPERATURES ARE PRECEDED BY A MINUS SIGN ADJACENT TO TEMPERATURE VALUE - DEG C TO TENTHS | 21 | 4 |
| SALINITY | XXXX - PARTS PER THOUSAND OR PRACTICAL SALINITY UNITS - TO HUNDREDTHS) | 25 | 4 |
| SIGMA-T | XXXXX - TO THOUSANDTHS | 29 | 5 |
| DISSOLVED OXYGEN | XXXXX - MICROGRAM-ATOMS/L TO HUNDREDTHS | 34 | 5 |
| NITRATE | XXXX - MICROGRAM-ATOMS/L TO HUNDREDTHS | 39 | 4 |
| NITRITE | XXXX - MICROGRAM-ATOMS/L TO HUNDREDTHS | 43 | 4 |
| AMMONIA | XXXXX - MICROGRAM-ATOMS/L TO HUNDREDTHS | 47 | 5 |
| INORGANIC PHOSPHATE | XXXX - MICROGRAM-ATOMS/L TO HUNDREDTHS | 52 | 4 |
| SILICATE | XXXXX - MICROGRAM-ATOMS/L TO HUNDREDTHS | 56 | 5 |
| RELATIVE CHLOROPHYLL FLUORESCENCE | XXXX - TO HUNDREDTHS | 61 | 4 |
| DISSOLVED ORGANIC CARBON | XXXX -MICROGRAMS CARBON/L TO HUNDREDTHS | 65 | 4 |
| PARTICULATE ORGANIC CARBON | XXXX-MICROGRAMS CARBON/L TO HUNDREDTHS | 69 | 4 |
| PARTICULATE ORGANIC NITROGEN | XXXX -MICROGRAMS NITROGEN/L TO HUNDREDTHS | 73 | 4 |
| BLANKS | | 77 | 8 |
| PARAMETER |
DESCRIPTION |
STARTING COLUMN |
FIELD LENGTH |
| DATA RECORD 2 | | |
| NODC FILE NUMBER | ALWAYS '069' | 1 | 3 |
| NODC TRACK NUMBER | 6-CHARACTER UNIQUE CRUISE OR DATA SET IDENTIFIER ASSIGNED BY NODC | 4 | 6 |
| RECORD NUMBER | ALWAYS '4' | 10 | 1 |
| SEQUENCE | SEE RECORD '2' | 11 | 3 |
| CAST NUMBER | SEE RECORD '2' | 14 | 3 |
| DEPTH | XXXX - WHOLE METERS | 17 | 4 |
| APPARENT OXYGEN UTILIZATION | XXXXX - MILLIGRAMS-ATOMS/LITER TO THOUSANDTHS | 21 | 5 |
| PERCENT OXYGEN SATURATION | XXX - WHOLE PERCENT | 26 | 3 |
| ELECTRON TRANSPORT SYSTEM | XXXXX - MICROLITER OXYGEN/L/HR TO TEN THOUSANDTHS | 29 | 5 |
| ADENOSINE TRIPHOSPHATE | XXXXX - NANOGRAM/L TO HUNDREDTHS | 34 | 5 |
| NANOPLANKTON CARBON UPTAKE | XXXXX - MILLIGRAMS CARBON/CUBIC M/HR TO TEN THOUSANDTHS | 39 | 5 |
| TOTAL PHAEOPHYTON | XXXXX - MILLIGRAMS/CUBIC M TO TEN THOUSANDTHS | 44 | 5 |
| NANOPLANKTON CHLOROPHYLL | XXXXX - MILLIGRAMS/CUBIC M TO TEN THOUSANDTHS | 49 | 5 |
| NANOPLANKTON PHAEOPHYTON | XXXXX - MILLIGRAMS/CUBIC M TO TEN THOUSANDTHS | 54 | 5 |
| TOTAL CARBON UPTAKE | XXXXX - MILLIGRAMS CARBON/CUBIC M/DAY TO TEN THOUSANDTHS | 59 | 5 |
| TOTAL CHLOROPHYLL | XXXXX - MILLIGRAMS/CUBIC METER TO TEN THOUSANDTHS | 64 | 5 |
| DRY WEIGHT OF PARTICULATE MATTER | XXXXX - MICROGRAMS/LITER TO HUNDREDTHS | 69 | 5 |
| NEPHELS | XXXXXXX - KILOHERTZ TO HUNDREDTHS | 74 | 7 |
| BLANKS | | 81 | 4 |
| PARAMETER |
DESCRIPTION |
STARTING COLUMN |
FIELD LENGTH |
| DATA RECORD 3 | | |
| NODC FILE NUMBER | ALWAYS '069' | 1 | 3 |
| NODC TRACK NUMBER | 6-CHARACTER UNIQUE CRUISE OR DATA SET IDENTIFIER ASSIGNED BY NODC | 4 | 6 |
| RECORD NUMBER | ALWAYS '5' | 10 | 1 |
| SEQUENCE | SEE RECORD '2' | 11 | 3 |
| CAST NUMBER | SEE RECORD '2' | 14 | 3 |
| SAMPLE DEPTH | XXXXX (METERS TO TENTHS) | 17 | 5 |
| TEMPERATURE | XXXX (DEG C TO HUNDREDTHS) | 22 | 4 |
| SALINITY | XXXX (PPT OR PRACTICAL SALINITY UNITS - TO HUNDREDTHS | 26 | 4 |
| PH | XXXX (TO THOUSANDTHS) | 30 | 4 |
| DISSOLVED OXYGEN GAS | XXXXXX (MILLILITERS/L TO THOUSANDTHS) | 34 | 6 |
| DISSOLVED ORGANIC CARBON | XXXXXX (MILLIGRAMS/L TO THOUSANDTHS) | 40 | 6 |
| PARTICULATE ORGANIC CARBON | XXXXXX (MILLIGRAMS/L TO THOUSANDTHS) | 46 | 6 |
| PARTICULATE ORGANIC NITROGEN | XXXXXX (MILLIGRAMS/L TO THOUSANDTHS) | 52 | 6 |
| TOTAL SUSPENDED MATTER | XXXXXX (MILLIGRAMS/L TO THOUSANDTHS) | 58 | 6 |
| TOTAL RECOVERABLE PETROLEUM HYDROCARBONS | XXXXXX (MILLIGRAMS/L TO THOUSANDTHS) | 64 | 6 |
| TOTAL RESOLVED LIGHT HYDROCARBONS | XXXXXX (MILLIGRAMS/L TO THOUSANDTHS) | 70 | 6 |
| BLANKS | | 76 | 9 |
| PARAMETER |
DESCRIPTION |
STARTING COLUMN |
FIELD LENGTH |
| DATA RECORD 4 | | |
| NODC FILE NUMBER | ALWAYS '069' | 1 | 3 |
| NODC TRACK NUMBER | 6-CHARACTER UNIQUE CRUISE OR DATA SET IDENTIFIER ASSIGNED BY NODC | 4 | 6 |
| RECORD NUMBER | ALWAYS '6' | 10 | 1 |
| SEQUENCE | SEE RECORD '2' | 11 | 3 |
| CAST NUMBER | SEE RECORD '2' | 14 | 3 |
| SAMPLE DEPTH | XXXXX - METERS TO TENTHS | 17 | 5 |
| NITRATE | XXXXXX - MILLIGRAMS/L TO THOUSANDTHS | 22 | 6 |
| NITRITE | XXXXXX - MILLIGRAMSG/L TO THOUSANDTHS | 28 | 6 |
| AMMONIA | XXXXXX - MILLIGRAMS/L TO THOUSANDTHS | 34 | 6 |
| SILICON DIOXIDE | XXXXXX - MILLIGRAMS/L TO THOUSANDTHS | 40 | 6 |
| TOTAL PHOSPHORUS IN PHOSPHATE | XXXXXX - MILLIGRAMS/L TO THOUSANDTHS | 46 | 6 |
| ORGANIC PHOSPHORUS IN PHOSPHATE | XXXXXX - MILLIGRAMS/L TO THOUSANDTHS | 52 | 6 |
| CHLOROPHYLL A | XXXXXX - MILLIGRAMS/CUBIC METER TO THOUSANDTHS | 58 | 6 |
| PHAEOPHYTIN A | XXXXXX - MILLIGRAMS/CUBIC METER TO THOUSANDTHS | 64 | 6 |
| SULFATE | XXXXXX - MILLIGRAMS/LITER TO THOUSANDTHSI | 70 | 6 |
| NITRATE-NITRITE RATIO | XXXX - TO HUNDREDTHS | 76 | 4 |
| BLANK | | 80 | 5 |
| PARAMETER |
DESCRIPTION |
STARTING COLUMN |
FIELD LENGTH |
| TEXT RECORD | | |
| NODC FILE NUMBER | ALWAYS '069' | 1 | 3 |
| NODC TRACK NUMBER | 6-CHARACTER UNIQUE CRUISE OR DATA SET IDENTIFIER ASSIGNED BY NODC | 4 | 6 |
| RECORD NUMBER | ALWAYS '7' | 10 | 1 |
| SEQUENCE | SEE RECORD '2' | 11 | 3 |
| CAST NUMBER | SEE RECORD '2' | 14 | 3 |
| TEXT | TEXT | 17 | 68 |