Dataset: optics
Deployment: EN198

Vertical profiles of PAR, upwelled irradiance w/CTD data

Principal Investigator:

William Broenkow (Moss Landing Marine Laboratories, MLML)

BCO-DMO Data Manager:

Cynthia L. Chandler (Woods Hole Oceanographic Institution, WHOI BCO-DMO)

Project:

U.S. JGOFS North Atlantic Bloom Experiment (NABE)

Version:

August 2, 1995

Deployment Synonyms:

END-198

Version Date:

1995-08-02

Data URL:

https://www.bco-dmo.org/dataset-deployment/450713/data

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Description

Vertical profiles of PAR, upwelled irradiance w/CTD data

Methods & Sampling

Dataset acquisition description

   PI:             William Broenkow
   of:             Moss Landing Marine Laboratories
   dataset:        Vertical profiles of PAR, upwelled irradiance w/CTD data from Moss Landing
   dates:          June 30, 1989 to July 4, 1989
   location:       N: 59.5283 S: 59.4900 W: -20.9833  E: -20.8383
   project/cruise  North Atlantic Bloom Experiment/Endeavor 198
   ship:           Endeavor

Data Processing Description

Dataset Processing Description

More information about this dataset deployment

Funding

Award Number	Funding Source
unknown NABE NSF	National Science Foundation

Instruments

Bio-Optical Profiling System

Supplied Description:

Bio Optical Profiler

Instrument Type

Generic Name: Bio-Optical Profiling System

Acronym: BOPS

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

Generic Description:

Bio-Optical Profiling System (BOPS) is an updated version of the BOPS originally developed by Smith et al. (1984) and is used to collect optical data. The heart of the BOPS is a Biospherical instruments MER-1048 Spectroradiometer which measures up and downwelling spectral irradiance and upwelling spectral radiance. The MER-1048 also has sensors for Photosynthetically Available Radiation (PAR), depth, tilt and roll. In addition, temperature and conductivity are measured with a Sea-Bird CTD, chlorophyll fluorescence is measured with a Sea Tech fluorometer and beam transmission with a Sea Tech 25-cm transmissometer. The Mer-1048 acquires all the data 16 times a second, averages it to four records a second and sends it up the cable to a deck box and a Compaq-286 computer which stores the data on the hard disk. Additionally, a deck cell measures the downwelling surface irradiance in four spectral channels. Also surface PAR is measured continuously using a Biospherical Instruments QSR-240 Integrating PAR sensor. The profile data is commonly filtered to remove obvious data spikes and then binned into one-meter averages.

Raymond C. Smith, Charles R. Booth, and Jeffrey L. Star, "Oceanographic biooptical profiling system," Appl. Opt. 23, 2791-2797 (1984).

CTD - profiler

Supplied Name: Conductivity, Temperature, Depth

Supplied Description:

CTD measurements taken, CTD unit unidentified

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

Supplied Name	Supplied description	Supplied Units	Standard Name
sta	station		no_bcodmo_term
cast	CTD cast number from event log		cast
event	event number from event log		event
lat	latitude from event log	decimal degrees	lat
lon	longitude from event log	decimal degrees	lon
par_ei_norm	Mean incident Ei PAR	uMole/m^2/sec	no_bcodmo_term
depth_cast	nominal maximum depth of cast	meters	depth_cast
time1	Mean Time GMT	decimal hrs	no_bcodmo_term
time_span1	Time Span	min	no_bcodmo_term
repl_1	Replicates per depth		no_bcodmo_term
sal	Mean Salinity	dimensionless	sal
temp1	Mean Temperature	degrees C	no_bcodmo_term
press1	Mean Pressure	decibars	no_bcodmo_term
o2	Mean Oxygen	ml/l	O2
beam	Mean Beam Attenuation 490 nm	1/m	no_bcodmo_term
fluor	Mean Rescaled Fluorescence 680 nm		fluor
time2	Mean Time GMT	decimal hrs	no_bcodmo_term
time_span2	Time Span	minutes	no_bcodmo_term
repl_2	Replicates per depth		no_bcodmo_term
lu_450	Mean Upwelled Radiance Lu 450 nm	uW/cm^2/sr	no_bcodmo_term
lu_500	Mean Upwelled Radiance Lu 500 nm	uW/cm^2/sr	no_bcodmo_term
par_eo	Mean PAR Spherical Irradiance Eo	uMole/m^2/sec	no_bcodmo_term
par_ei	Mean Incidence Irradiance Ei	uMole/m^2/sec	no_bcodmo_term
temp2	Mean Temperature	degrees C	temp2
press2	Mean Pressure	decibars	no_bcodmo_term
lu_450_pc	percent Upwelled Radiance Lu 450 nm	percent	no_bcodmo_term
lu_500_pc	percent Upwelled Radiance Lu (500 nm)	percent	no_bcodmo_term
par_eo_pc	percent PAR Spherical Irradiance Eo	percent	no_bcodmo_term

Database

Contribute Data

Dataset: optics
Deployment: EN198

Dataset acquisition description

Dataset Processing Description

Database

Contribute Data

Dataset: opticsDeployment: EN198

Dataset acquisition description

Dataset Processing Description

Dataset: optics
Deployment: EN198