Dataset: BCO-DMO EPZT Master Events File
Deployment: TN303

BCO-DMO-created "master" file of sampling events from the GEOTRACES EPZT cruise.

BCO-DMO Data Manager:

Shannon Rauch (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

U.S. GEOTRACES East Pacific Zonal Transect (GP16) (U.S. GEOTRACES EPZT)

Current State:

Final no updates expected

Version:

02 June 2016

Deployment Synonyms:

GP16, GEOTRACES EPZT, GEOTRACES East Pacific Zonal Transect (EPZT), GT13, 325020131025

Version Date:

2016-06-02

Data URL:

https://www.bco-dmo.org/dataset-deployment/650137/data

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Description

BCO-DMO-created "master" file of sampling events from the GEOTRACES EPZT cruise. This dataset combines information from the EPZT event log, bottle files (ODF and GT-C), and sampling logs.

Note on depth fields:
ODF reports that the CTDDEPTH column agreed best with depths identified from CTD bottle trips recorded during GEOTRACES CTD acquisition. The depth values in CTDDEPTH column are from the Saunders & Fofonoff 1976 calculation of depth from pressure. This is the same default calculation of depth used by SeaBird (SBE) software. GEOTRACES CTD data acquisition uses SBE software. It follows that it would be preferable and consistent for GEOTRACES and ODF to use the values in the CTDDEPTH column.

Methods & Sampling

Dataset acquisition description

BCO-DMO compiled a 'master' dataset composed of the following parameters:
cruise_id, EXPOCODE,SECT_ID, STNNBR, CASTNO, GEOTRC_EVENTNO, GEOTRC_SAMPNO, GEOTRC_INSTR, SAMPNO, GF_NO, BTLNBR, BTLNBR_FLAG_W, DATE_START_EVENT, TIME_START_EVENT, ISO_DATETIME_UTC_START_EVENT, EVENT_LAT, EVENT_LON, DEPTH_MIN, DEPTH_MAX, BTL_DATE, BTL_TIME, BTL_ISO_DATETIME_UTC, BTL_LAT, BTL_LON, ODF_CTDPRS, SMDEPTH, FMDEPTH, BTMDEPTH, CTDPRS, CTDDEPTH.

Bottle parameters in the master file were taken from the GT-C_Bottle and ODF_Bottle datasets. Non-bottle parameters, including those from GeoFish tows, Aerosol sampling, and McLane Pumps, were taken from the TN303 Event Log (version 30 Oct 2014). Where applicable, pump information was taken from the PUMP_Nuts_Sals dataset.

Data Processing Description

Dataset Processing Description

More information about this dataset deployment

Instruments

None available yet

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
cruise_id	Cruise identification	unitless	cruise_id
EXPOCODE	Cruise EXPO code.	unitless	EXPOCODE
SECT_ID	Cruise section identifier; EPZT = GEOTRACES East Pacific Zonal Transect; EXTRA = additional non-GEOTRACES samples taken on the cruise.	unitless	cruise_part
STNNBR	Station number	unitless	station
CASTNO	Cast number	unitless	cast
GEOTRC_EVENTNO	GEOTRACES event number	unitless	event
GEOTRC_SAMPNO	Unique GEOTRACES sample number	unitless	sample
GEOTRC_INSTR	Sampling instrument	unitless	instrument
SAMPNO	Sequential sample number within the cast (usually corresponds to bottle number).	unitless	bottle
GFISH_NO	GeoFish tow number.	unitless	tow
BTLNBR	Bottle number; typically 1-24.	unitless	bottle
BTLNBR_FLAG_W	Bottle number quality flag; follows WOCE conventions. 2 = no problems noted; 3 = leaking; 4 = did not trip correctly; 9 = samples not drawn from this bottle. Refer to the WOCE Parameter Quality Codes document (PDF).	unitless	flag
DATE_START_EVENT	Date (year, month, day) at the start of the sampling event, according to the event log.	yyyymmdd	date
TIME_START_EVENT	Time (hours and minutes) at the start of the sampling event, according to the event log; 24-hour clock.	HHMM	time
ISO_DATETIME_UTC_START_EVENT	Date and time, formatted to the ISO 8601 standard, at the start of the sampling event, according to the event log.	YYYY-MM-DDTHH:MM:SS[.xx]Z	ISO_DateTime_UTC
EVENT_LAT	Latitude at the start of the event; north is positive.	decimal degrees	lat
EVENT_LON	Longitude at the start of the event; east is positive.	decimal degrees	lon
DEPTH_MIN	Minimum depth of the cast.	meters	depth_min
DEPTH_MAX	Maxiumum depth of the cast.	meters	depth_max
BTL_DATE	Date (year, month, day) when the bottle was fired; according to the bottle file.	yyyymmdd	date
BTL_TIME	Time (hours and minutes) when the bottle was fired; according to the bottle file.	HHMM	time
BTL_ISO_DATETIME_UTC	Date and time, formatted to the ISO 8601 standard, at the time of bottle firing.	YYYY-MM-DDTHH:MM:SS[.xx]Z	ISO_DateTime_UTC
BTL_LAT	Latitude of bottle firing; north is positive.	decimal degrees	lat
BTL_LON	Lonitude of bottle firing; east is positive.	decimal degrees	lon
ODF_CTDPRS	The ODF software acquisition measurement of pressure	decibars	press
SMDEPTH	Saunders-Mantyla depth (integrated; uses dynamic height)	meters	depth
FMDEPTH	Fofonoff-Millard depth (non-integrated; also used by SBE)	meters	depth
BTMDEPTH	Bottom depth	meters	depth_bottom
CTDPRS	CTD pressure	decibars	press
CTDDEPTH	CTD bottle firing depth. This is the primary/preferred depth measurement.	meters	depth

Database

Contribute Data

Dataset: BCO-DMO EPZT Master Events File
Deployment: TN303

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: BCO-DMO EPZT Master Events FileDeployment: TN303

Dataset acquisition description

Dataset Processing Description

Dataset: BCO-DMO EPZT Master Events File
Deployment: TN303