Dataset: CTD sensor

Name: CTD sensor data from two cruises from R/V Robert Gordon Sproul SP1714 in the California Current waters off the coast of Southern California and Baja California from 2017-2018
Published: 2019-08-06
Keywords: oceans

View Data: Data not available yet

Cite This Dataset

Spatial Extent: N:33.82444 E:-114.92768 S:28.28743 W:-120.25384

Temporal Extent: 2017-05-03 - 2018-05-12

Project:

Collaborative Research: Biogeochemical significance of the abundant, uncultivated symbiotic cyanobacteria UCYN-A (BSUCS)

Principal Investigator:

Kevin R. Arrigo (Stanford University)

Co-Principal Investigator:

Jonathan P. Zehr (University of California-Santa Cruz, UC Santa Cruz)

Contact:

Matthew M. Mills (Stanford University)

BCO-DMO Data Manager:

Mathew Biddle (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

Version Date:

2019-08-06

Restricted:

Validated:

Current State:

Data not available

CTD sensor data from two cruises from R/V Robert Gordon Sproul SP1714 in the California Current waters off the coast of Southern California and Baja California from 2017-2018

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Description

CTD sensor data from two cruises on which experiments were conducted. The experimental data related to this dataset can be found at BCO-DMO dataset UCYN-A Host activity (https://www.bco-dmo.org/dataset/774585)

Acquisition Description

Samples were collected using standard oceanographic techniques. A CTD Rosette with 24 10L Niskin bottles was lowered to the maximum sampling depth and then brought back to the surface. Data submitted from CTD is downcast data only.

Processing Description

BCO-DMO Processing Notes:
- added conventional header with dataset name, PI name, version date
- modified parameter names to conform with BCO-DMO naming conventions
- removed duplicate depth columns
- removed duplicate sigma_theta columns

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1559152
NSF Division of Ocean Sciences	OCE-1559165

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
SP1714		2017-05-03	R/V Robert Gordon Sproul	Matthew M. Mills (Chief Scientist)	data info
SP1727		2017-10-04	R/V Robert Gordon Sproul	Matthew M. Mills (Chief Scientist)	data info

Instruments

CTD - profiler

Supplied Name: CTD Rosette

Supplied Description:

A CTD Rosette with 24 10L Niskin bottles was lowered to the maximum sampling depth and then brought back to the surface.

Instrument Type

Generic Name: CTD - profiler

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/130/

Generic Description:

The Conductivity, Temperature, Depth (CTD) unit is an integrated instrument package designed to measure the conductivity, temperature, and pressure (depth) of the water column. The instrument is lowered via cable through the water column. It permits scientists to observe the physical properties in real-time via a conducting cable, which is typically connected to a CTD to a deck unit and computer on a ship. The CTD is often configured with additional optional sensors including fluorometers, transmissometers and/or radiometers. It is often combined with a Rosette of water sampling bottles (e.g. Niskin, GO-FLO) for collecting discrete water samples during the cast.

This term applies to profiling CTDs. For fixed CTDs, see https://www.bco-dmo.org/instrument/869934.

Parameters

Date and time formats are described in python strftime() syntax.

Supplied Name	Supplied description	Supplied Units	Standard Name
Cruise	cruise identifier	unitless	no_bcodmo_term
Station	station identifier	unitless	sta
Cast	cast identifier	unitless	cast
Lat	latitude of observation. Positive values indicate North	decimal degrees	lat
Lon	longitude of observation. Positive values indicate East	decimal degrees	lon
Depth	depth of observation	meters (m)	depth
Press	pressure of observation	decibars (db)	no_bcodmo_term
Temp1	Water temperature from first sensor	degrees Celsius	temp
Temp2	water temperature from second sensor	degrees Celsius	temp
Sal1	salinity from first sensor	practical salinity units (PSU)	sal
Sal2	salinity from second sensor	practical salinity units (PSU)	sal
O2	oxygen from SBE 43	mililiters per liter (ml/L)	O2
Fluor	fluorescence	miligrams per meter cubed (mg/m3)	fluor
Par	Photosythetically active radiation (PAR)	percent	PAR
SigTheta1	sigma-theta density from first sensor	kilograms per meter cubed (kg/m3)	sigma_theta
SigTheta2	sigma-theta density from second sensor	kilograms per meter cubed (kg/m3)	sigma_theta
Time_elapsed	time elapsed	seconds (s)	time_elapsed
Depth_bot	bottom depth	meters (m)	depth_bottom
Density	density sigma-theta	kilograms per meter cubed (kg/m3)	sigma_theta
Pot_temp1	Potential temperature sensor 1	degrees Celsius	potemp
Pot_temp2	Potentia temperature sensor 2	degrees Celsius	potemp

Database

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Dataset: CTD sensor