Bio-optics data from R/V Atlantis II cruises AII-119-4, AII-119-5 in the North Atlantic in 1989 (U.S. JGOFS NABE project)

Website: https://www.bco-dmo.org/dataset/2584
Version: final
Version Date: 1995-06-29

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

Program
» U.S. Joint Global Ocean Flux Study (U.S. JGOFS)
ContributorsAffiliationRole
Davis, CurtissU.S. Naval Research Laboratory (NRL)Principal Investigator
Trees, Charles C.San Diego State University (SDSU)Principal Investigator
Chandler, Cynthia L.Woods Hole Oceanographic Institution (WHOI BCO-DMO)BCO-DMO Data Manager


Dataset Description

Bio Optics Data


Methods & Sampling

Curtiss Davis - Bio Optical Profiler Data, AII-119/4

Charles Trees - Bio-Optical data (60 variables at One-meter resolution), AII 119/5


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Parameters

ParameterDescriptionUnits
event

Event number from event log

MMDDhhmm
sta

Station number from event log

dimensionless
cast

Cast number from event log

dimensionless
year

Year, from event log

YYYY
mon

Month, from event log

MM
day

Day, from event log

DD
time

Time, local time, from event log

hhmm
lat

Latitude from event log

decimal degrees
lon

Longitude from event log

decimal degrees
pts_per_meter

number of original points per one meter bin

count
ed_410

downwelling spectral irradiance at depth

uW/cm^2/nm
ed_441

downwelling spectral irradiance at depth

uW/cm^2/nm
ed_488

downwelling spectral irradiance at depth

uW/cm^2/nm
ed_520

downwelling spectral irradiance at depth

uW/cm^2/nm
ed_550

downwelling spectral irradiance at depth

uW/cm^2/nm
ed_560

downwelling spectral irradiance at depth

uW/cm^2/nm
ed_589

downwelling spectral irradiance at depth

uW/cm^2/nm
ed_633

downwelling spectral irradiance at depth

uW/cm^2/nm
ed_656

downwelling spectral irradiance at depth

uW/cm^2/nm
ed_671

downwelling spectral irradiance at depth

uW/cm^2/nm
ed_683

downwelling spectral irradiance at depth

uW/cm^2/nm
ed_694

downwelling spectral irradiance at depth

uW/cm^2/nm
ed_710

downwelling spectral irradiance at depth

uW/cm^2/nm
depth

bin averaged sample depth

meters
tilt

instrument tilt (range -45 to 45)

degrees
roll

instrument roll (range -45 to 45)

degrees
lu_410

upwelling spectral radiance at depth

uW/cm^2/nm/str
lu_441

upwelling spectral radiance at depth

uW/cm^2/nm/str
lu_488

upwelling spectral radiance at depth

uW/cm^2/nm/str
lu_520

upwelling spectral radiance at depth

uW/cm^2/nm/str
lu_550

upwelling spectral radiance at depth

uW/cm^2/nm/str
lu_633

upwelling spectral radiance at depth

uW/cm^2/nm/str
lu_656

upwelling spectral radiance at depth

uW/cm^2/nm/str
lu_683

upwelling spectral radiance at depth

uW/cm^2/nm/str
eu_410

upwelling spectral irradiance at depth

uW/cm^2/nm
eu_441

upwelling spectral irradiance at depth

uW/cm^2/nm
eu_488

upwelling spectral irradiance at depth

uW/cm^2/nm
eu_520

upwelling spectral irradiance at depth

uW/cm^2/nm
eu_550

upwelling spectral irradiance at depth

uW/cm^2/nm
eu_589

upwelling spectral irradiance at depth

uW/cm^2/nm
eu_671

upwelling spectral irradiance at depth

uW/cm^2/nm
eu_694

upwelling spectral irradiance at depth

uW/cm^2/nm
trans

light transmission from 25 cm transmissometer

% transmission
fluor

stimulated fluoresence

floro units 0 to 100
par

Photosynthetically available radiation at depth

quanta/sec/cm^2
temp

CTD temperature

degrees C
cond

CTD conductivity

mmho/cm
sal

CTD salinity calculated from conductivity

dimensionless
sigma

calculated density

dimensionless
e_410

spectral irradiance above sea surface

uW/cm^2/nm
e_520

spectral irradiance above sea surface

uW/cm^2/nm
e_589

spectral irradiance above sea surface

uW/cm^2/nm
e_683

spectral irradiance above sea surface

uW/cm^2/nm
cast_type

either up or down profile for given cast

E_sfc

spectral irradiance above sea surface at nominal wave length of 456nm

uW/cm^2nm^-1*10^-3
Kd_411

diffuse attenuation coefficient for Ed_411

m^-1*10^-4
Ed_411

downwelled irradiance at wave length of 411

uW/cm^2nm^-1*10^-4
Kd_440

diffuse attenuation coefficient for Ed_440

m^-1*10^-4
Ed_440

downwelled irradiance at wave length of 440

uW/cm^2nm^-1*10^-4
Kd_486

diffuse attenuation coefficient for Ed_486

m^-1*10^-4
Ed_486

downwelled irradiance at wave length of 486

uW/cm^2nm^-1*10^-4
Kd_519

diffuse attenuation coefficient for Ed_519

m^-1*10^-4
Ed_519

downwelled irradiance at wave length of 519

uW/cm^2nm^-1*10^-4
Kd_530

diffuse attenuation coefficient for Ed_530

m^-1*10^-4
Ed_530

downwelled irradiance at wave length of 530

uW/cm^2nm^-1*10^-4
Kd_548

diffuse attenuation coefficient for Ed_548

m^-1*10^-4
Ed_548

downwelled irradiance at wave length of 548

uW/cm^2nm^-1*10^-4
Kd_588

diffuse attenuation coefficient for Ed_588

m^-1*10^-4
Ed_588

downwelled irradiance at wave length of 588

uW/cm^2nm^-1*10^-4
Kd_631

diffuse attenuation coefficient for Ed_631

m^-1*10^-4
Ed_631

downwelled irradiance at wave length of 631

uW/cm^2nm^-1*10^-4
Kd_654

diffuse attenuation coefficient for Ed_654

m^-1*10^-4
Ed_654

downwelled irradiance at wave length of 654

uW/cm^2nm^-1*10^-4
Kd_669

diffuse attenuation coefficient for Ed_669

m^-1*10^-4
Ed_669

downwelled irradiance at wave length of 669

uW/cm^2nm^-1*10^-4
Kd_695

diffuse attenuation coefficient for Ed_695

m^-1*10^-4
Ed_695

downwelled irradiance at wave length of 695

uW/cm^2nm^-1*10^-4
K_par

diffuse attenuation coefficient for E_par

m^-1*10^-4
E_par

underwater photosynthetically available radiation

uE/m^2/sec*10^-4
Ku_410

diffuse attenuation coefficient for Eu_410

m^-1*10^-4
Ku_440

diffuse attenuation coefficient for Eu_440

m^-1*10^-4
Eu_440

upwelled irradiance at wave length of 440

uW/cm^2nm^-1*10^-4
Ku_487

diffuse attenuation coefficient for Eu_487

m^-1*10^-4
Eu_487

upwelled irradiance at wave length of 487

uW/cm^2nm^-1*10^-4
Ku_520

diffuse attenuation coefficient for Eu_520

m^-1*10^-4
Ku_549

diffuse attenuation coefficient for Eu_549

m^-1*10^-4
Eu_549

upwelled irradiance at wave length of 549

uW/cm^2nm^-1*10^-4
Ku_588

diffuse attenuation coefficient for Eu_588

m^-1*10^-4
Eu_588

upwelled irradiance at wave length of 588

uW/cm^2nm^-1*10^-4
Ku_631

diffuse attenuation coefficient for Eu_631

m^-1*10^-4
Eu_631

upwelled irradiance at wave length of 631

uW/cm^2nm^-1*10^-4
Ku_670

diffuse attenuation coefficient for Eu_670

m^-1*10^-4
Eu_670

upwelled irradiance at wave length of 670

uW/cm^2nm^-1*10^-4
Kl_412

diffuse attenuation coefficient for Lu_412

m^-1*10^-4
Lu_412

upwelled radiance at wave length of 412

uW/cm^2nm^-1sr^-1*10^-5
Kl_441

diffuse attenuation coefficient for Lu_441

m^-1*10^-4
Kl_488

diffuse attenuation coefficient for Lu_488

m^-1*10^-4
Kl_521

diffuse attenuation coefficient for Lu_521

m^-1*10^-4
Lu_521

upwelled radiance at wave length of 521

uW/cm^2nm^-1sr^-1*10^-5
Kl_550

diffuse attenuation coefficient for Lu_550

m^-1*10^-4
Kl_589

diffuse attenuation coefficient for Lu_589

m^-1*10^-4
Lu_589

upwelled radiance at wave length of 589

uW/cm^2nm^-1sr^-1*10^-5
Kl_710

diffuse attenuation coefficient for Lu_710

m^-1*10^-4
Lu_710

upwelled radiance at wave length of 710

uW/cm^2nm^-1sr^-1*10^-5
Kl_685

diffuse attenuation coefficient for Lu_685

m^-1*10^-4
Lu_685

upwelled radiance at wave length of 685

uW/cm^2nm^-1sr^-1*10^-5
beam

beam attenuation coefficient

millivolts


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Instruments

Dataset-specific Instrument Name
Bio-Optical Profiling System
Generic Instrument Name
Bio-Optical Profiling System
Dataset-specific Description
Optical data was collected with a Bio-Optical Profiling System (BOPS) an updated version of the BOPS originally developed by Smith et al. (1984). 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 bean 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 was measured continuously using a Biospherical Instruments QSR-240 Integrating PAR sensor. The profile data was filtered to remove obvious data spikes and then binned into one-meter averages.
Generic Instrument 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).

Dataset-specific Instrument Name
QSR-240
Generic Instrument Name
Biospherical QSR-240 surface PAR
Dataset-specific Description
Also surface PAR was measured continuously using a Biospherical Instruments QSR-240 Integrating PAR sensor.
Generic Instrument Description
Shipboard radiometer with a PAR spectral response (400-700nm) designed to monitor surface irradiance during underwater light profile measurement. Hemispherical collector measuring 2-pi scalar irradiance.

Dataset-specific Instrument Name
SeabirdCTD
Generic Instrument Name
CTD Sea-Bird
Dataset-specific Description
A Sea-Bird CTD was used to measure temperature and conductivity.
Generic Instrument 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.

Dataset-specific Instrument Name
SeaTech Fluorometer
Generic Instrument Name
Sea Tech Fluorometer
Dataset-specific Description
A Sea Tech fluorometer used to measure chlorophyll fluorescence.
Generic Instrument Description
The Sea Tech chlorophyll-a fluorometer has internally selectable settings to adjust for different ranges of chlorophyll concentration, and is designed to measure chlorophyll-a fluorescence in situ. The instrument is stable with time and temperature and uses specially selected optical filters enabling accurate measurements of chlorophyll a. It can be deployed in moored or profiling mode. This instrument designation is used when specific make and model are not known. The Sea Tech Fluorometer was manufactured by Sea Tech, Inc. (Corvalis, OR, USA).

Dataset-specific Instrument Name
SeaTech Transmissometer
Generic Instrument Name
Sea Tech Transmissometer
Dataset-specific Description
A Sea Tech 25-cm transmissometer was used to measure bean transmission with.
Generic Instrument Description
The Sea Tech Transmissometer can be deployed in either moored or profiling mode to estimate the concentration of suspended or particulate matter in seawater. The transmissometer measures the beam attenuation coefficient in the red spectral band (660 nm) of the laser lightsource over the instrument's path-length (e.g. 20 or 25 cm). This instrument designation is used when specific make and model are not known. The Sea Tech Transmissometer was manufactured by Sea Tech, Inc. (Corvalis, OR, USA).

Dataset-specific Instrument Name
Spectroradiometer
Generic Instrument Name
Spectroradiometer
Dataset-specific Description
A Biospherical instruments MER-1048 Spectroradiometer 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.
Generic Instrument Description
A Spectroradiometer or Spectraradiometer is an instrument that measures the intensity and nature of electromagnetic radiation. An ocean color radiometer makes the measurements in a manner optimized for the determination of ocean chlorophyll concentration.


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Deployments

AII-119-4

Website
Platform
R/V Atlantis II
Start Date
1989-04-17
End Date
1989-05-11
Description
early bloom cruise; 17 locations; 60N 21W to 46N 18W

Methods & Sampling
PI: Curtiss Davis of: Jet Propusion Laboratory dataset: Bio Optical Profiler Data dates: April 25, 1989 to May 08, 1989 location: N: 47.0112 S: 46.2827 W: -20.1635 E: -19.0353 project/cruise North Atlantic Bloom Experiment/Atlantis II 119, leg 4 ship: R/V Atlantis II JGOFS North Atlantic Bloom Experiment Bio-Optical profiling observations R/V Atlantis II, 25 April - 10 May 1989 November 07, 2002 Data Description: Optical data was collected with a Bio-Optical Profiling System (BOPS) an updated version of the BOPS originally developed by Smith et al. (1984). 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 bean 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 was measured continuously using a Biospherical Instruments QSR-240 Integrating PAR sensor. The profile data was filtered to remove obvious data spikes and then binned into one-meter averages. Reference: Smith, R.C., C.R. Booth, and J.L. Star, Oceanographic bio-optical profiling system. Applied Optics, 23, 2791-2797, 1984

AII-119-5

Website
Platform
R/V Atlantis II
Start Date
1989-05-15
End Date
1989-06-06
Description
late bloom cruise; 31 locations; 61N 22W to 41N 17W

Methods & Sampling
PI: Charles Trees of: San Diego State University dataset: Bio-Optical data (60 variables at One-meter resolution) dates: May 18, 1989 to June 06, 1989 location: N: 59.535 S: 46.27 W: -20.785 E: -17.6933 project/cruise: North Atlantic Bloom Experiment/Atlantis II 119, leg 5 ship: Atlantis II references: Mueller, J.L. 1991. Integral method for irradiance profile analysis. Center for Hydro-Optics and Remote Sensing Memo. 007-91. San Diego State University, San Diego, CA, 10 pp. Mueller, J.L. & R.W. Austin. 1995. Ocean Optics Protocols for SeaWiFS Validation, Rev. I. NASA Tech Memo 104566, Volume 25, Chapter 6; Analytical Methods, p. 49-52.


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Project Information

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


Coverage: North Atlantic


One of the first major activities of JGOFS was a multinational pilot project, North Atlantic Bloom Experiment (NABE), carried out along longitude 20° West in 1989 through 1991. The United States participated in 1989 only, with the April deployment of two sediment trap arrays at 48° and 34° North. Three process-oriented cruises where conducted, April through July 1989, from R/V Atlantis II and R/V Endeavor focusing on sites at 46° and 59° North. Coordination of the NABE process-study cruises was supported by NSF-OCE award # 8814229. Ancillary sea surface mapping and AXBT profiling data were collected from NASA's P3 aircraft for a series of one day flights, April through June 1989.

A detailed description of NABE and the initial synthesis of the complete program data collection efforts appear in: Topical Studies in Oceanography, JGOFS: The North Atlantic Bloom Experiment (1993), Deep-Sea Research II, Volume 40 No. 1/2.

The U.S. JGOFS Data management office compiled a preliminary NABE data report of U.S. activities: Slagle, R. and G. Heimerdinger, 1991. U.S. Joint Global Ocean Flux Study, North Atlantic Bloom Experiment, Process Study Data Report P-1, April-July 1989. NODC/U.S. JGOFS Data Management Office, Woods Hole Oceanographic Institution, 315 pp. (out of print).



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Program Information

U.S. Joint Global Ocean Flux Study (U.S. JGOFS)


Coverage: Global


The United States Joint Global Ocean Flux Study was a national component of international JGOFS and an integral part of global climate change research.

The U.S. launched the Joint Global Ocean Flux Study (JGOFS) in the late 1980s to study the ocean carbon cycle. An ambitious goal was set to understand the controls on the concentrations and fluxes of carbon and associated nutrients in the ocean. A new field of ocean biogeochemistry emerged with an emphasis on quality measurements of carbon system parameters and interdisciplinary field studies of the biological, chemical and physical process which control the ocean carbon cycle. As we studied ocean biogeochemistry, we learned that our simple views of carbon uptake and transport were severely limited, and a new "wave" of ocean science was born. U.S. JGOFS has been supported primarily by the U.S. National Science Foundation in collaboration with the National Oceanic and Atmospheric Administration, the National Aeronautics and Space Administration, the Department of Energy and the Office of Naval Research. U.S. JGOFS, ended in 2005 with the conclusion of the Synthesis and Modeling Project (SMP).



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Funding

Funding SourceAward
National Science Foundation (NSF)

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