Dataset: CTD

Name: CTD with oxygen and fluorescence to 600 meters from R/V BIP XII and Shana Rae cruises in the Guaymas Basin, Gulf of California, Santa Cruz, CA in 2013 (Jumbo Squid El Nino Response project)
Published: 2015-10-15
Keywords: oceans

Cite This Dataset

Spatial Extent: N:36.7427 E:-110.2769 S:24.4698 W:-122.0199

Project:

Adaptable life history strategy of a migratory large predator in response to El Nino and climate change (Jumbo Squid El Nino Response)

Principal Investigator:

William Gilly (Stanford University)

BCO-DMO Data Manager:

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

Version:

15 October 2015

Version Date:

2015-10-15

Validated:

Current State:

Preliminary and in progress

CTD with oxygen and fluorescence to 600 meters from R/V BIP XII and Shana Rae cruises in the Guaymas Basin, Gulf of California, Santa Cruz, CA in 2013 (Jumbo Squid El Nino Response project)

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Description

CTD data from cruises BIP XII, Shana Rae 2013, and MBB Soledad 2014.

Methods & Sampling

Data were collected with Seabird SBE19plusV2 (SN 01906222) equipped with the following sensors:
Temperature: ITS-90
Pressure: Strain Gauge
Oxygen:SBE43
Fluorescence: WET Labs ECO-AFL/FL

All sensors (except Fluorescence) are calibrated annually by Seabird Electronics, Inc.

Data Processing Description

Data were processed by hand to remove unreliable measurements during the initial period of sensor stabilization at the surface before the cast (2 minutes). Binning to 1 m depth bins for the downcast was carried out during conversion from .hex files to ascii text (.cnv) files using the most current .con file provided by Seabird Electronics at the time of annual calibration.

BCO-DMO data processing:
- Re-formatted date and time.
- Replaced commas with semi-colons.
- Replaced blanks with "nd" to indicate "no data".
- Replaced spaces with underscores.
- Changed lon in positive degrees W to negative degrees E.
- Modified parameter names to conform with BCO-DMO naming conventions.

Data Files

File
ctd.csv (Comma Separated Values (.csv), 1.57 MB) MD5:b3d9416f375cf35d85f498c2a1b28bad Primary data file for dataset ID 615924

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1338973

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
BIPXII_10_2013		2013-10-20	R/V BIP XII	William Gilly (Principal Investigator)	data info
Shana_Rae_11_2013		2013-11-11	Shana Rae	William Gilly (Principal Investigator)	data info

Instruments

CTD Sea-Bird SBE SEACAT 19plus

Supplied Name: Seabird SBE19plusV2

Supplied Description:

Data were collected with Seabird SBE19plusV2 (SN 01906222).

Instrument Type

Generic Name: CTD Sea-Bird SBE SEACAT 19plus

Acronym: Sea-Bird SEACAT 19 Plus

Generic Description:

Self contained self powered CTD profiler. Measures conductivity, temperature and pressure in both profiling (samples at 4 scans/sec) and moored (sample rates of once every 5 seconds to once every 9 hours) mode. Available in plastic or titanium housing with depth ranges of 600m and 7000m respectively. Minature submersible pump provides water to conductivity cell.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
date	Date (local or GMT??)	mm/dd/YYYY	date
time_local	Time in hours and minutes (local time zone); 24-hour clock.	HHMM	time_local
time_gmt	Time in hours and minutes (GMT); 24-hr clock.	HHMM	time_gmt
ctd	CTD dataset ID number.	integer	no_bcodmo_term
cast	Cast number.	integer	cast
lat	Latitude. Positive values = North.	decimal degrees	lat
lon	Longitude. Positive values = East.	decimal degrees	lon
location	Description of location.	text	no_bcodmo_term
vessel	Vessel name.	text	no_bcodmo_term
note	Notes.	text	no_bcodmo_term
jig_station	Jig station. For BIP XII data, squid jigging stations that correspond to the sites of CTD casts (and total number of squid captured at each site) are included. These jigging sites are cross-referenced to the "Squid Summary BIPXII" dataset (http://www.bco-dmo.org/dataset/614736).	text	no_bcodmo_term
total_squid	Total squid.	integer	no_bcodmo_term
temp	Temperature.	degrees Celsius	temp
cond	Conductivity.	Siemens per meter (S/m)	cond
press	Pressure.	decibars (db)	press
O2	Oxygen.	micromoles per kilogram (umol/kg)	O2
fluor	Fluorescence "chlorophyll".	milligrams per cubic meter (mg/m^3)	fluor
pH	pH.	pH units.	pH
turbidity	Turbidity, Seapoint.	FTU	turbidity
density	Sigma-theta density.	kilograms per cubic meter (kg/m^3)	density
depth	Depth.	meters	depth
sal	Salinity.	practical salinity units (PSU)	sal
flag	Flag.	nd	flag
time_PDT	Time in hours and minutes (PDT time zone); 24-hour clock	HHMM	time_local

Status message

Database

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Dataset: CTD