Dataset: Mixed Layer
Deployment: RR2201

Mixed Layer

View Data: For data, See Dataset Metadata Page: https://osprey.bco-dmo.org/dataset/943707

Principal Investigator:

Michael R. Landry (University of California-San Diego Scripps, UCSD-SIO)

BCO-DMO Data Manager:

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

Project:

Collaborative Research: Mesoscale variability in nitrogen sources and food-web dynamics supporting larval southern bluefin tuna in the eastern Indian Ocean (BLOOFINZ-IO)

Version:

Deployment Synonyms:

BLOOFINZ-IO

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Description

Methods & Sampling

Dataset acquisition description

Mixed Layer Depths (MLD) were calculated from CTD downcast profiles at 1-meter resolution based on sigma-t difference of 0.01 kilogram per cubic meter (kg m-3) relative to mean sigma-t of upper 5 meters. Mean values from CTD sensors were averaged for the determined MLD.

Data Processing Description

Dataset Processing Description

More information about this dataset deployment

Funding

Award Number	Funding Source
OCE-1851558	NSF Division of Ocean Sciences

Instruments

CTD Sea-Bird

Supplied Name: Seabird SBE 9plus CTD

Supplied Description:

Instrument Type

Generic Name: CTD Sea-Bird

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

Generic Description:

Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics, no specific unit identified. This instrument designation is used when specific make and model are not known. See also other SeaBird instruments listed under CTD. More information from Sea-Bird Electronics.

Sea-Bird SBE 63 dissolved oxygen sensor

Supplied Name: Seabird SBE 63 Optical Dissolved Oxygen Sensor

Supplied Description:

Instrument Type

Generic Name: Sea-Bird SBE 63 dissolved oxygen sensor

Acronym: SBE-63 DO

Generic Description:

The SBE63 is an optode dissolved oxygen sensor mounted in plastic (600-meter operating depth) or titanium (7000-meter operating depth) housing that interfaces through an RS-232 connection to SeaCAT or MicroCAT CTDs or Navis Argo float. Accuracy is the greater of 3 micromoles per kilogram or 2 %.

Transmissometer

Supplied Name: Seabird C-Star Beam Attenuation Meter (BAM) Transmissometer

Supplied Description:

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.

WET Labs (Sea-Bird WETLabs) WETStar fluorometer

Supplied Name: Seabird WETStar fluorometer

Supplied Description:

Instrument Type

Generic Name: WET Labs (Sea-Bird WETLabs) WETStar fluorometer

Acronym: WETStar

Community Identifier: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0075/

Generic Description:

Submersible fluorometer designed for through-flow or pumped CTD applications manufactured by WetLabs and which can be configured for various types of fluorescence. The probe has a temperature range of 0-30 degrees C and a depth rating of 600 meters.

Parameters

Supplied Name	Supplied description	Supplied Units	Standard Name
Cruise	Cruise ID (RR2201)	unitless	cruise_id
Event	unique event number in UTC time as YYYYMMDD.mmss.###, where ### distinguishes events entered within the same minute	unitless	event
ISO_DateTime_UTC	Date and time (UTC) of CTD deployment in ISO 8601 format	unitless	ISO_DateTime_UTC
Latitude	latitude (North is positive; South is negative)	decimal degrees	lat
Longitude	longitude (East is positive; West is negative)	decimal degrees	lon
Cycle_Day	lagrangian experiments following a drogued drifter are noted as Cycle,Day, e.g. C1,D1; C1,D2, etc. EOC = end of cycle; e.g., EOC1. Numbers are given for ARGO transect stations	unitless	no_bcodmo_term
CTD_Cast	CTD cast number in Event Log	unitless	cast
MLD	mixed layer depth	meters (m)	depth_mixed_layer
Temp	mean temperature in mixed layer	degrees Celsius	temp
Saliniity	mean salinity in mixed layer	PSU	sal
Sigma_t	mean sigma-t density in mixed layer	kg/m3 - 1000	sigma_t
Xmissn	mean percent light transmission in mixed layer	percent per meter (% m-1)	light_trans
O2	mean oxygen concentration in mixed layer	micromoles per kilogram (umol kg-1)	O2
O2_pcnt_sat	mean oxygen percent saturation in mixed layer	percent (%)	O2sat
Fluoro	mean in vivo Chla concentration in mixed layer from fluorometer	milligrams per cubic meter (mg m-3)	fluor

Database

Contribute Data

Dataset: Mixed Layer
Deployment: RR2201

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: Mixed LayerDeployment: RR2201

Dataset acquisition description

Dataset Processing Description

Dataset: Mixed Layer
Deployment: RR2201