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Data Listing

This NDP consists of two files: the file called "LDEO_database.txt" contains all the numerical data, and the file "heading.txt" contains information on the data source, credit, institution, etc. The data elements in "LDEO_Database.txt" and their units are listed in Table 2; and those in "Metadata.xls" are explained in Table 3. Detailed cruise documentation (such as names of ship and ports and dates for departure and arrival) may be obtained directly from CDIAC or the respective PI's.

Table 2. Data elements listed in the master data file "LDEO_Database.txt"
FILENAME*	Internal LDEO File Name
STN*	Station number assigned in the LDEO File
LAT	Latitude in decimal degrees (North is positive)
LON	Longitude in decimal degrees (East is positive)
MONTH/DAY/YEAR	Date
JDATE	Julian Date in decimal notation. Convention is 0001 UTC 1 Jan = 1.0
VCO2_SW**	Mole fraction concentration of CO₂ (ppm) in dried air
PCO2_TEQ	Partial Pressure of CO₂ in seawater (microatmospheres) at the temperature in the TEMP_PCO2 column
TEMP_PCO2	Temperature at which pCO₂ was measured in °C
SST	Sea Surface Temperature in °C
SSS	Sea Surface Salinity
PCO2_SST	Partial Pressure of CO₂ in seawater (in units of microatmospheres) at the temperature in the SST column
PCO2_TEQ	Partial Pressure of CO₂ in seawater (in units of microatmospheres) at the temperature in theTEMP_PCO2 column. This is ordinarily the value that is actually measured
EQ_PBARO	Pressure in the equilibration vessel in units of millibars
SHIPPBARO	Barometric pressure in the outside air from the ship’s observation system in units of millibars

*Cross reference fields to the internal LDEO file name in case problems are discovered
**Missing data have the value -999.9

Table 3. Data elements listed in the metadata file "Metadata.xls"
FILENAME	Internal LDEO File Name
DIRNAME	Directory Name for the Internal LDEO File Name
LEG	Leg Number. This is an arbitrary designation in many files because of our limit of four characters for a station number. For surface underway files that normally have many more than 9,999 observations we have broken the file into "legs".
SHIP	The name of the ship or other platform used
OBSERVER	A notation of the person making the observation or responsible for running the collection system
DEPARTPORT	Port of Departure
DEPARTDATE	Date of Departure
ARRIVEPORT	Port of Arrival
ARRIVEDATE	Date of Arrival
CRUISENAME	A notation to identify the general name of the cruise
COMMENT*	Air data source and general information

*Additional information may be available for a particular file if needed.

akozyr 09/28/2007