Dataset: KM1314 CTD

Name: CTD data from R/V Kilo Moana KM1314 in the The North Pacific Ocean (Seattle to Honolulu, including Line P, Station ALOHA), Aug - Sept 2013 (Nitrification and Marine Planktonic Biodiversity project)
Published: 2014-11-24
Keywords: oceans

Cite This Dataset

Spatial Extent: N:50 E:-125.999 S:22.7498 W:-158.5055

Project:

Significance of nitrification in shaping planktonic biodiversity in the ocean (Nitrification and Marine Planktonic Biodiversity)

Program:

Dimensions of Biodiversity (Dimensions of Biodiversity)

Principal Investigator:

Allan Devol (University of Washington, UW)

Co-Principal Investigator:

E. Virginia Armbrust (University of Washington, UW)

Anitra E. Ingalls (University of Washington, UW)

James W. Moffett (University of Southern California, USC)

Dr David A. Stahl (University of Washington, UW)

BCO-DMO Data Manager:

Nancy Copley (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Version:

2014-11-24

Version Date:

2014-11-24

Validated:

Yes

Current State:

Final no updates expected

CTD data from R/V Kilo Moana KM1314 in the The North Pacific Ocean (Seattle to Honolulu, including Line P, Station ALOHA), Aug - Sept 2013 (Nitrification and Marine Planktonic Biodiversity project)

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Description

Water property data from the North Pacific Ocean, including CTD, dissolved oxygen, chlorophyll fluorescence, PAR, turbidity, beam transmission.

Related Dataset: KM1314 bottle

Methods & Sampling

Samples were collected onboard the R/V Kilo Moana between 8/7 and 9/5 2013. Water property data were collected using a Niskin rosette equipped with a Seabird CTD package and auxiliary sensors, specifically: Seabird 911 CTD, SBE 43 Dissolved Oxygen Sensor, Biospherical/Licor PAR/Irradiance Sensor, WETLabs ECO Chlorophyll Fluorometer, WETLabs C-Star Transmissometer, Seapoint Chlorophyll Fluorometer. Discrete samples for nutrients, oxygen, and prokaryotic cells were collected using a Niskin rosette attached to the sensor package. All CTD sensors were factory calibrated within 1 year of deployment. Nutrient samples were filtered onboard, frozen immediately at -80 degrees C, and subsequently processed at the University of Washington Marine Chemistry Lab using the US-JGOFS protocols. Discrete oxygen samples were analyzed on board using the Carpenter modification of the Winkler method.

Data Processing Description

Data were processed using Seabird proprietary data conversion software and factory calibration coefficients; dissolved oxygen voltage was aligned using a time advance of 3.75 seconds for both Oxygen 1 and Oxygen 2; downcast data were averaged into 1 meter bins.

BCO-DMO Data Processing Notes:

added conventional header with dataset name, PI name, version date, reference information
renamed parameters to BCO-DMO standard; renamed Station to event; StationName to station
reduced number of significant digits for lat and lon
version 2 (24 Nov. 2014) replaces version 1 (21 Nov. 2014)

Data Files

File
ctd_KM1314.csv (Comma Separated Values (.csv), 5.35 MB) MD5:6bb9321244ecd30f867ba507cbda3040 Primary data file for dataset ID 539810

More Information about this dataset

Funding Sources

Funding Source	Award Number
NSF Division of Ocean Sciences	OCE-1046017

Deployments

Deployment	Synonyms	Start Date	Platform	Investigator
KM1314		2013-08-07	R/V Kilo Moana	Anitra E. Ingalls (Chief Scientist)	data info

Instruments

CTD Sea-Bird SBE 911plus

Supplied Name: CTD SBE 911plus

Supplied Description:

Instrument Type

Generic Name: CTD Sea-Bird SBE 911plus

Acronym: CTD SBE 911plus

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0058/

Generic Description:

The Sea-Bird SBE 911 plus is a type of CTD instrument package for continuous measurement of conductivity, temperature and pressure. The SBE 911 plus includes the SBE 9plus Underwater Unit and the SBE 11plus Deck Unit (for real-time readout using conductive wire) for deployment from a vessel. The combination of the SBE 9 plus and SBE 11 plus is called a SBE 911 plus. The SBE 9 plus uses Sea-Bird's standard modular temperature and conductivity sensors (SBE 3 plus and SBE 4). The SBE 9 plus CTD can be configured with up to eight auxiliary sensors to measure other parameters including dissolved oxygen, pH, turbidity, fluorescence, light (PAR), light transmission, etc.). more information from Sea-Bird Electronics

CTD-fluorometer

Supplied Description:

WETLabs ECO Chlorophyll Fluorometer

Instrument Type

Generic Name: CTD-fluorometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/113/

Generic Description:

A CTD-fluorometer is an instrument package designed to measure hydrographic information (pressure, temperature and conductivity) and chlorophyll fluorescence.

Fluorometer

Supplied Description:

Seapoint Chlorophyll Fluorometer

Instrument Type

Generic Name: Fluorometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/113/

Generic Description:

A fluorometer or fluorimeter is a device used to measure parameters of fluorescence: its intensity and wavelength distribution of emission spectrum after excitation by a certain spectrum of light. The instrument is designed to measure the amount of stimulated electromagnetic radiation produced by pulses of electromagnetic radiation emitted into a water sample or in situ.

Niskin bottle

Supplied Description:

Instrument Type

Generic Name: Niskin bottle

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0412/

Generic Description:

A Niskin bottle (a next generation water sampler based on the Nansen bottle) is a cylindrical, non-metallic water collection device with stoppers at both ends. The bottles can be attached individually on a hydrowire or deployed in 12, 24, or 36 bottle Rosette systems mounted on a frame and combined with a CTD. Niskin bottles are used to collect discrete water samples for a range of measurements including pigments, nutrients, plankton, etc.

Photosynthetically Available Radiation Sensor

Supplied Name: PAR sensor

Supplied Description:

Biospherical/Licor PAR/Irradiance Sensor

Instrument Type

Generic Name: Photosynthetically Available Radiation Sensor

Acronym: PAR sensor

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/122/

Generic Description:

A PAR sensor measures photosynthetically available (or active) radiation. The sensor measures photon flux density (photons per second per square meter) within the visible wavelength range (typically 400 to 700 nanometers). PAR gives an indication of the total energy available to plants for photosynthesis. This instrument name is used when specific type, make and model are not known.

Sea-Bird SBE 43 Dissolved Oxygen Sensor

Supplied Name: SBE-43 DO

Supplied Description:

Instrument Type

Generic Name: Sea-Bird SBE 43 Dissolved Oxygen Sensor

Acronym: SBE-43 DO

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0036/

Generic Description:

The Sea-Bird SBE 43 dissolved oxygen sensor is a redesign of the Clark polarographic membrane type of dissolved oxygen sensors. more information from Sea-Bird Electronics

Transmissometer

Supplied Description:

WETLabs C-Star Transmissometer

Instrument Type

Generic Name: Transmissometer

Community Identifier: http://vocab.nerc.ac.uk/collection/L05/current/124/

Generic Description:

A transmissometer measures the beam attenuation coefficient of the lightsource over the instrument's path-length. This instrument designation is used when specific manufacturer, make and model are not known.

Parameters

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

Supplied Name	Supplied description	Supplied Units	Standard Name
station	Station number (sequential based on location).	unitless	station
event	Event number	unitless	event
month_utc	2-digit month of year, UTC, at start of cast.	mm (01 to 12)	month_utc
day_utc	2-digit day of month, UTC, at start of cast.	dd (01 to 31)	day_utc
year	4-digit year at start of cast.	YYYY	year
time_start	Time (UTC) at start of CTD cast, 24-hour clock.	HHMM	time_start
lat_start	Latitude at start of CTD cast. Positive = North.	decimal degrees	lat_start
lon_start	Longitude at start of CTD cast. Positive = East.	decimal degrees	lon_start
depth_w	Depth of the water (bottom depth).	meters	depth_w
ISO_DateTime_UTC	Date/Time (UTC) ISO8601 formatted. T indicates start of time string; Z indicates UTC.	YYYY-mm-ddTHH:MM:SS.ssZ	ISO_DateTime_UTC
press	Pressure, Digiquartz.	decibars	press
temp	Temperature from primary sensor, ITS-68, measured in degrees Celsius.	degrees C	temp
temp2	Temperature from secondary sensor, ITS-68, measured in degrees Celsius.	degrees C	temp2
cond	Conductivity from primary sensor measured in Siemens per meter.	S/m	cond
cond2	Conductivity from secondary sensor measured in Siemens per meter.	S/m	cond2
O2_umol_kg	Oxygen measured by primary SBE 43 sensor in micromoles per kilogram.	umol/kg	O2_umol_kg
O2_umol_kg2	Oxygen measured by secondary SBE 43 sensor in micromoles per kilogram.	umol/kg	O2_umol_kg
fluor	Fluorescence measured by WET Labs ECO-AFL/FL in milligrams per cubic meter.	mg/m^3	fluor
fluor_spt	Fluorescence, Seapoint.	?	no_bcodmo_term
sal	Salinity from primary sensor in practical salinity units.	PSU	sal
sal2	Salinity from secondary sensor in practical salinity units.	PSU	sal2
sigma_theta	Sigma theta density from primary sensor in kilograms per cubic meter.	kg/m^3	sigma_theta
sigma_theta_2	Sigma theta density from secondary sensor in kilograms per cubic meter.	kg/m^3	sigma_theta
potemp	Potential temperature from primary sensor, ITS-90, measured in degrees Celsius.	degrees C	potemp
potemp2	Potential temperature from secondary sensor, ITS-90, measured in degrees Celsius.	degrees C	potemp2
beam_c	Beam attenuation measured by the WET Labs C-Star transmissometer.	1/m	beam_c
PAR	PAR/Irradiance, Biospherical/Licor		PAR
cruise_id	Cruise identification	unitless	cruise_id
turbidity	Turbidity	NTU	turbidity
trans	Beam transmission	percent	trans
O2sat	Oxygen saturation measured by primary SBE 43 sensor	percent	O2sat
O2sat_2	Oxygen saturation measured by secondary SBE 43 sensor	percent	O2sat
yrday_gmt	UTC day and decimal time, as 326.5 for the 326th day of the year, or November 22 at 1200 hours (noon).	unitless	yrday_gmt

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Dataset: KM1314 CTD