Dataset: Cariaco Meta-Omics Cruises CTD data
Deployment: CAR212_2

CTD profiles collected in support of molecular samples.

Principal Investigator:

Gordon T. Taylor (Stony Brook University - SoMAS, SUNY-SB SoMAS)

Co-Principal Investigator:

Virginia P. Edgcomb (Woods Hole Oceanographic Institution, WHOI)

Dr Craig Taylor (Woods Hole Oceanographic Institution, WHOI)

Contact:

Gordon T. Taylor (Stony Brook University - SoMAS, SUNY-SB SoMAS)

BCO-DMO Data Manager:

Ms Dicky Allison (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

Genetic and Metabolic Signatures of Marine Microorganisms in Oxygen Depleted and Varying Geochemical Seascapes (CariacoMetaOmics)

Current State:

Final with updates expected

Version:

Final

Version Date:

2016-07-22

Data URL:

https://osprey.bco-dmo.org/dataset-deployment/652497/data

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Description

These are CTD profiles as part of the Cariaco Metagenomics project, collecting standard CTD data and including fluorometry, several kinds of Oxygen measurements, stability and buoyancy at the CARIACO Basin time series station.

Methods & Sampling

Dataset acquisition description

Standard Seabird 25 deployment and collection procedures. These data include both down and upcasts in 1 meter bins.

Data Processing Description

Dataset Processing Description

CTD files were processed according to the standard methods used by the CARIACO Time Series program, available in the manual at http://reef01.marine.usf.edu/sites/default/files/project/cariaco/publications/CARIACO_Methods_Manual.pdf.

DMO Notes:
Created a top-level file of all CTDs from all cruises.
renamed the column headers to comply with normal usages and BCO-DMO standards.
changed -9.99E-29 to 'nd'. Changed blanks to 'nd'.

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1335436	NSF Division of Ocean Sciences
OCE-1336082	NSF Division of Ocean Sciences

Instruments

Sea-Bird SBE 25 Sealogger CTD

Supplied Name: Seabird 25

Supplied Description:

With fluorometer, beam transmissometer, and several O2 sensors.

Instrument Type

Generic Name: Sea-Bird SBE 25 Sealogger CTD

Acronym: CTD SBE 25

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0040/

Generic Description:

The Sea-Bird SBE 25 SEALOGGER CTD is battery powered and is typically used to record data in memory, eliminating the need for a large vessel, electrical sea cable, and on-board computer. All SBE 25s can also operate in real-time, transmitting data via an opto-isolated RS-232 serial port. Temperature and conductivity are measured by the SBE 3F Temperature sensor and SBE 4 Conductivity sensor (same as those used on the premium SBE 9plus CTD). The SBE 25 also includes the SBE 5P (plastic) or 5T (titanium) Submersible Pump and TC Duct. The pump-controlled, TC-ducted flow configuration significantly reduces salinity spiking caused by ship heave, and in calm waters allows slower descent rates for improved resolution of water column features. Pressure is measured by the modular SBE 29 Temperature Compensated Strain-Gauge Pressure sensor (available in eight depth ranges to suit the operating depth requirement). The SBE 25's modular design makes it easy to configure in the field for a wide range of auxiliary sensors, including optional dissolved oxygen (SBE 43), pH (SBE 18 or SBE 27), fluorescence, transmissivity, PAR, and optical backscatter sensors. More information from Sea-Bird Electronics: http:www.seabird.com.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
cruise_id	cruise designation	unitless	cruise_id
CTD_num	sequential CTD number	unitless	cast
cast	cast number	unitless	cast
month_utc	month of year; Universal Coordinated Time	unitless	month_utc
day_utc	day of month; Universal Coordinated Time	unitless	day_utc
year	year	unitless	year
time_start	time the cast started in hours and decimal minutes	unitless	time
lat_start	latitude at start of cast; North is positive	decimal degrees	lat_start
lon_start	longitude at start of cast; West is negative	decimal degrees	lon_start
depth_w	water depth	meters	depth_w
ISO_DateTime_UTC	standardized time parameter	YYYY-MM-DDTHH:MM:SS[.xx]Z	ISO_DateTime_UTC
press	pressure by CTD strain gauge	decibars	press
depth	depth of instrument	meters	depth
temp	temperature of water; ITS90	degrees centigrade	temp
cond	conductivity	Siemans per meter	cond
O2_volt	dissolved Oxygen	voltage	O2_v
fluor	fluorescence from Wetlab ECO-AFL/FL	milligrams per cubic meters	fluor
beamc	beam attenuation; Chelsea SeaTech Wetlab Cstar	1/meters	beam_c
O2sat_ml_L	Oxygen saturation	milliliters per liter	O2sat
O2sat_mg_L	Oxygen saturation	milligrams per liter	O2sat
O2_ml_L	dissolved oxygen	milliliters per liter	O2_ml_L
O2_mg_L	dissolved oxygen	milligram per liter	O2_mg_L
O2_umol_Kg	dissolved oxygen	micromoles per kilogram	O2_umol_kg
sigma_0	sigma theta; potential density of seawater	kilograms per cubic meter	sigma_theta
sigma_t	density of seawater	kilograms per cubic meters	sigma_t
potemp	potential temperature; ITS90	degrees centigrade	potemp
sal	salinity calculated from the primary CTD temp and conductivity sensors	Practical Salinity Units(PSU)	sal
E stability and N buoyancy terms	Calculated by Sea Bird CTD; calculates buoyancy (Brunt-Väisälä) frequency (N) and stability (E) using the Fofonoff adiabatic leveling method (Bray N. A. and N. P. Fofonoff(1981) Available potential energy for MODE eddies. Journal of Physical Oceanography 11 30-46.).	radians per second or cycles per hour	no_bcodmo_term

Database

Contribute Data

Dataset: Cariaco Meta-Omics Cruises CTD data
Deployment: CAR212_2

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Cariaco Meta-Omics Cruises CTD dataDeployment: CAR212_2

Dataset acquisition description

Dataset Processing Description

Dataset: Cariaco Meta-Omics Cruises CTD data
Deployment: CAR212_2