http://lod.bco-dmo.org/id/dataset/3409
eng; USA
utf8
dataset
Highest level of data collection, from a common set of sensors or instrumentation, usually within the same research project
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
2011-01-11
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
CTD full resolution profiles from cruises KN193-03, B4-2008, B9-2008, and B10-2008 in the subpolar North Atlantic and Iceland Basin in 2008 (NAB 2008 project)
2011-01-25
publication
2011-01-25
revision
BCO-DMO Linked Data URI
2011-01-25
creation
http://lod.bco-dmo.org/id/dataset/3409
Mary Jane Perry
University of Maine
principalInvestigator
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
publisher
Cite this dataset as: Perry, M. (2011) CTD full resolution profiles from cruises KN193-03, B4-2008, B9-2008, and B10-2008 in the subpolar North Atlantic and Iceland Basin in 2008 (NAB 2008 project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 25 January 2011) Version Date 2011-01-25 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/3409 [access date]
CTD full resolution profiles Dataset Description: <p>CTD profile data represented an important part of the core measurements and were done on all the cruises. This dataset consists of full-resolution profiles (casts were also processed to one meter-averaged profiles.) Parameters include temperature, conductivity, SBE dissolved oxygen oxygen, chlorophyll fluorescence, optical backscatter, and beam transmission.</p> Methods and Sampling:
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0628107 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0628107
Funding provided by National Aeronautics & Space Administration (NASA) Award Number: NNX08AL92G
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-0628379 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=0628379
onGoing
Mary Jane Perry
University of Maine
207 581 3321
Darling Marine Center & School of Marine Sciences University of Maine
Walpole
ME
04573
USA
perrymj@maine.edu
pointOfContact
asNeeded
Dataset Version: 25 January 2011
Unknown
Cruise_ID
date
lon
lat
beamc_id
Zmax
cast
depth
temp
sal
sigma_0
O2_cal
chl_raw
chl_a_derived
ss880_raw
bbp700
beam_cp
CDOM
SPAR
PAR
POC_cp
POC_bbp
julian_day_yr0
depth_bottom
O2_uncal
QSR-240
CTD Sea-Bird SBE 911plus
LI-COR Biospherical PAR Sensor
SBE 43 Dissolved Oxygen Sensor
Seapoint Turbidity Meter
Wet Labs CSTAR Transmissometer
WETStar ECO FLNTU
WETStar CDOM Fluorometer
theme
None, User defined
Cruise identfier
date
longitude
latitude
No BCO-DMO term
depth_max
cast
depth
water temperature at measurement depth
salinity
sigma-theta
dissolved Oxygen
chl_raw
chl_a_derived
turbid_v
beam attenuation
CDOM volts
SPAR
PAR
julian_day_yr0
depth_bottom
O2_uncal
featureType
BCO-DMO Standard Parameters
Biospherical QSR-240 surface PAR
CTD Sea-Bird SBE 911plus
LI-COR Biospherical PAR Sensor
Sea-Bird SBE 43 Dissolved Oxygen Sensor
Seapoint Turbidity Meter
WET Labs {Sea-Bird WETLabs} C-Star transmissometer
WETLabs ECO-FLNTU
WETStar CDOM Fluorometer
instrument
BCO-DMO Standard Instruments
KN193-03
B4-2008
B9-2008
B10-2008
service
Deployment Activity
subpolar North Atlantic, Iceland Basin, 60.7 to 61.7 degrees N, 25 to 27.7 degrees W
subpolar North Atlantic, Iceland Basin, 58.8° to 59.2° N 20° to 20.9° W
subpolar North Atlantic, Iceland Basin, 61.3° to 61.85° N 25.6° to 26.8°W
subpolar North Atlantic, Iceland Basin, 59° to 62° N 20.2° to 26.6° W
place
Locations
otherRestrictions
otherRestrictions
Access Constraints: none. Use Constraints: Please follow guidelines at: http://www.bco-dmo.org/terms-use Distribution liability: Under no circumstances shall BCO-DMO be liable for any direct, incidental, special, consequential, indirect, or punitive damages that result from the use of, or the inability to use, the materials in this data submission. If you are dissatisfied with any materials in this data submission your sole and exclusive remedy is to discontinue use.
Ocean Carbon and Biogeochemistry
http://us-ocb.org/
Ocean Carbon and Biogeochemistry
The Ocean Carbon and Biogeochemistry (OCB) program focuses on the ocean's role as a component of the global Earth system, bringing together research in geochemistry, ocean physics, and ecology that inform on and advance our understanding of ocean biogeochemistry. The overall program goals are to promote, plan, and coordinate collaborative, multidisciplinary research opportunities within the U.S. research community and with international partners. Important OCB-related activities currently include: the Ocean Carbon and Climate Change (OCCC) and the North American Carbon Program (NACP); U.S. contributions to IMBER, SOLAS, CARBOOCEAN; and numerous U.S. single-investigator and medium-size research projects funded by U.S. federal agencies including NASA, NOAA, and NSF.
The scientific mission of OCB is to study the evolving role of the ocean in the global carbon cycle, in the face of environmental variability and change through studies of marine biogeochemical cycles and associated ecosystems.
The overarching OCB science themes include improved understanding and prediction of: 1) oceanic uptake and release of atmospheric CO2 and other greenhouse gases and 2) environmental sensitivities of biogeochemical cycles, marine ecosystems, and interactions between the two.
The OCB Research Priorities (updated January 2012) include: ocean acidification; terrestrial/coastal carbon fluxes and exchanges; climate sensitivities of and change in ecosystem structure and associated impacts on biogeochemical cycles; mesopelagic ecological and biogeochemical interactions; benthic-pelagic feedbacks on biogeochemical cycles; ocean carbon uptake and storage; and expanding low-oxygen conditions in the coastal and open oceans.
OCB
largerWorkCitation
program
North Atlantic Bloom Experiment 2008
https://osprey.bco-dmo.org/project/2098
North Atlantic Bloom Experiment 2008
<p>NAB2008 was a process experiment designed to study an important component of the oceanic carbon system - the North Atlantic spring bloom. The phytoplankton bloom occurring each spring in the North Atlantic, drives the uptake of carbon dioxide and is an important component of the biological pump (Bagniewski et al., 2010). Previous studies in this region have shown the importance of small temporal and spatial scales, i.e. ecosystem patchiness, during the bloom, but were restricted by the limitations of ship-based sampling. Recent advances in autonomous platforms and sensors presented an opportunity to study this important event in a new way. In addition to deployment of a diverse suite of <em>in situ</em> sampling devices, NAB2008 was also a test-bed for developing the strategies and knowledge needed to successfully use new methods to drive the next generation of ocean observations.</p>
<p>In 2008, a coordinated deployment of 1 float, 4 Seagliders and 2 research vessels sampled the evolution of the North Atlantic spring bloom along and surrounding the nearly Lagrangian path followed by the float. The autonomous measurements were continuous through the experimental period, and included CTD, chlorophyll fluorescence, optical backscatter, and oxygen on all platforms; and nitrate, optical attenuation, and various radiance measurements on the float. Velocities were determined from the vehicle motion, with the float extending to a depth of 230 meters and gliders to 1,000 meters. The autonomous vehicles were deployed, rescued, and recovered on three cruises of the Icelandic vessel Bjarni Saemundsson. A 21-day cruise of the R/V Knorr conducted more detailed measurements during the peak of the bloom in May. The R/V Knorr sampling program included optical profiles, ADCP data and analysis of water samples for nutrients, particulate organic carbon, pigments, micro-plankton composition, complemented by guest investigator analyses. Data from both ships were used to calibrate and validate the autonomous measurements.</p>
<p><strong>References:</strong><br />
Bagniewski, W., Fennel, K., Perry, M. J., and D'Asaro, E. A. (2010) Optimizing models of the North Atlantic spring bloom using physical, chemical and bio-optical observations from a Lagrangian float, Biogeosciences Discuss., 7, pp. 8477-8520, doi:10.5194/bgd-7-8477-2010</p>
<p><a href="http://iop.apl.washington.edu/nab08/">NAB08 preprints</a></p>
<p>Click on image to view full size<br />
<a href="http://data.bco-dmo.org/NAB08/NAB2008_sampling_diagram_revised.png"><img alt="Sampling Diagram" src="https://datadocs.bco-dmo.org/d2/NAB08/NAB2008_sampling_diagram_revised.png" /></a></p>
NAB 2008
largerWorkCitation
project
eng; USA
oceans
subpolar North Atlantic, Iceland Basin, 60.7 to 61.7 degrees N, 25 to 27.7 degrees W; subpolar North Atlantic, Iceland Basin, 58.8° to 59.2° N 20° to 20.9° W; subpolar North Atlantic, Iceland Basin, 61.3° to 61.85° N 25.6° to 26.8°W; subpolar North Atlantic, Iceland Basin, 59° to 62° N 20.2° to 26.6° W
-27.598
-20.18
58.833
61.877
2008-04-03
2008-06-29
North Atlantic, 60 &deg; North
0
BCO-DMO catalogue of parameters from CTD full resolution profiles from cruises KN193-03, B4-2008, B9-2008, and B10-2008 in the subpolar North Atlantic and Iceland Basin in 2008 (NAB 2008 project)
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
http://lod.bco-dmo.org/id/dataset-parameter/23111.rdf
Name: Cruise_ID
Units: dimensionless
Description: <p>Cruise identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/23112.rdf
Name: date
Units: YYYYMMDD
Description: <p>Date of sample</p>
http://lod.bco-dmo.org/id/dataset-parameter/23113.rdf
Name: lon
Units: decimal degrees
Description: <p>longitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/23114.rdf
Name: lat
Units: decimal degrees
Description: <p>latitude</p>
http://lod.bco-dmo.org/id/dataset-parameter/23115.rdf
Name: beamc_id
Units: dimensionless
Description: <p>Transmissometer Serial number</p>
http://lod.bco-dmo.org/id/dataset-parameter/23116.rdf
Name: Zmax
Units: dimensionless
Description: <p>Maximum depth reported for the CTD cast</p>
http://lod.bco-dmo.org/id/dataset-parameter/23117.rdf
Name: cast
Units: dimensionless
Description: <p>station identifier</p>
http://lod.bco-dmo.org/id/dataset-parameter/23118.rdf
Name: depth
Units: meter
Description: <p>sampling</p>
http://lod.bco-dmo.org/id/dataset-parameter/23119.rdf
Name: temp
Units: degrees Celsius
Description: <p>Temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/23120.rdf
Name: sal
Units: dimensionless
Description: <p>Salinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/23121.rdf
Name: sigma_0
Units: kilograms / meter^3
Description: <p>water potential density - 1000</p>
http://lod.bco-dmo.org/id/dataset-parameter/23122.rdf
Name: O2_cal
Units: micromol / kilogram
Description: <p>dissolved oxygen concentration calibrated with Winkler oxygen</p>
http://lod.bco-dmo.org/id/dataset-parameter/23123.rdf
Name: chl_raw
Units: volts
Description: <p>chlorophyll fluorescence (raw output - dark counts)</p>
http://lod.bco-dmo.org/id/dataset-parameter/23124.rdf
Name: chl_a_derived
Units: milligrams / meter^3
Description: <p>chlorophyll concentration from fluorescence using empirical, cruise-specific algorithm</p>
http://lod.bco-dmo.org/id/dataset-parameter/23125.rdf
Name: ss880_raw
Units: volts
Description: <p>sidescatter (raw output with no dark correction)</p>
http://lod.bco-dmo.org/id/dataset-parameter/23126.rdf
Name: bbp700
Units: meter^-1
Description: <p>particulate backscattering coefficient (b sub bp) with excitation at 470 nanometers and emission at 695 nanometers and volume scattering function at 140 degrees and 700 nanometers</p>
http://lod.bco-dmo.org/id/dataset-parameter/23127.rdf
Name: beam_cp
Units: meter^-1
Description: <p>particulate attenuation coefficient</p>
http://lod.bco-dmo.org/id/dataset-parameter/23128.rdf
Name: CDOM
Units: volts
Description: <p>colored dissolved material fluorescence (raw output with no dark correction)</p>
http://lod.bco-dmo.org/id/dataset-parameter/23129.rdf
Name: SPAR
Units: micromol photon / meter^2 / sec
Description: <p>surface photosynthetically active radiation (sPAR)</p>
http://lod.bco-dmo.org/id/dataset-parameter/23130.rdf
Name: PAR
Units: micromol photon / meter^2 / sec
Description: <p>water column photosynthetically active radiation (PAR)</p>
http://lod.bco-dmo.org/id/dataset-parameter/23131.rdf
Name: POC_cp
Units: milligrams / meter^3
Description: <p>particulate organic carbon from particulate attenuation coefficient (cp; see beamc)</p>
http://lod.bco-dmo.org/id/dataset-parameter/23132.rdf
Name: POC_bbp
Units: milligrams / meter^3
Description: <p>particulate organic carbon from particulate backscattering coefficient (bbp; see bbp700)</p>
http://lod.bco-dmo.org/id/dataset-parameter/23133.rdf
Name: julian_day_yr0
Units: dimensionless
Description: <p>day of year; days since January 1, year 0.</p>
http://lod.bco-dmo.org/id/dataset-parameter/23134.rdf
Name: depth_bottom
Units: meters
Description: <p>bottom depth</p>
http://lod.bco-dmo.org/id/dataset-parameter/23135.rdf
Name: O2_uncal
Units: micromol/kilogram
Description: <p>dissolved oxygen (uncalibrated)</p>
GB/NERC/BODC > British Oceanographic Data Centre, Natural Environment Research Council, United Kingdom
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
424679940
https://datadocs.bco-dmo.org/file/DwwxOgoHB5Ovll/CTD_full.csv
CTD_full.csv
Primary data file for dataset ID 3409
download
https://osprey.bco-dmo.org/dataset/3409/data/download
download
onLine
dataset
from Cruise: KN193-03 <p>The WHOI CTD Rosette on the R/V Knorr was equipped with the following sensors:<br />
[NOTE: Sensor owner is identified in parenthesis (WHOI or Perry)]</p>
<p>Sea-Bird Electronics 11+ CTD deck unit (WHOI);<br />
Sea-Bird Electronics 9+ CTD with Dual SBE3T/SBE4C temperature/conductivity sensors (WHOI);<br />
24-bottle Rosette with 10-liter bottles (WHOI);<br />
Sea-Bird Electronics 43 oxygen sensor (WHOI);<br />
WET Labs ECO FLNTU, measuring chlorophyll fluorescence with excitation at 470 nm and emission at 695 nm and volume scattering function at 140° and 700 nm (Perry);<br />
WET Labs C-Star transmissometer, measuring transmission at 653 nm (s/n 284, loaned to Perry; s/n 1090, Perry);<br />
WET Labs CDOM ECO fluorometer – measuring colored dissolved organic material (CDOM) fluorescence with excitation at 370 nm and emission at 460 nm (loaned to Perry);<br />
Seapoint Turbidity Meter measuring broad angle side scattering over a wide angle (15 – 150º) at 880 nm (WHOI);<br />
Biospherical Instruments underwater QSP2300 sensor, measuring scalar underwater photosynthetically active radiation (PAR; Perry);<br />
Biospherical Instruments surface QSR-240 Quantum Scalar Reference Sensor providing surface photosynthetically active radiation (SPAR; WHOI).</p>
<p>For more details, see sensor set up and instrument calibration factors document: Knorr19303_PsaReport.txt</p>
<p>CTD data are reported as cast number and not as station number.</p>
<p>CTD Rosette system profiled at 0.5 m s-1 between the surface and 200 m, and at 1 m s-1 below 200 m.</p>
<p>On CTD casts 16, 17, 59, 61, 63, 82, 109 and 124, the pump associated with the Oxygen SBE43 sensor failed, resulting in partial or total removal of oxygen data from the dataset (parameter name O2_cal). For those casts with pump failure, temperature and salinity data from the second CT sensors were used.</p>
<p>WET Labs C-Star s/n 284 was used on cruise B200804 (deployment cruise on R/S Bjarni Saemundsson) and the first part of KN19303 (process cruise). It flooded and was replaced with C-Star s/n 1090 for the remainder of the process cruise (it was also use on the two additional R/S Bjarni Saemundsson cruises B200809 and B200810). Data (parameter name beam_cp) associated with malfunctioning and flooded C-Star s/n 284 have been removed from following casts: 13, 25–30 and 43. The parameter name beamc_id indicates which C-Star was used (s/n 284 or 1090). Cross calibration of C-Stars is discussed below, under Data Processing.</p>
<p>Seapoint Turbidity Meter could not be configured on the CTD Rosette system after the exchange of C-Star sensors; therefore, data from that sensor (parameter name ss880_raw) are not available after CTD cast 30.</p>
from Cruise: B4-2008 <p>CTD rosette deployed from the R/S Bjarni Saemundsson was equipped with following sensors; sensor owner is identified in parenthesis (Marine Research Institute or Perry):<br />
Sea-Bird Electronics 11+ CTD deck unit (Marine Research Institute);<br />
Sea-Bird Electronics 9+ CTD (Marine Research Institute);<br />
Sea-Bird Electronics 43 oxygen sensor (Marine Research Institute);<br />
WET Labs ECO FLNTU, measuring chlorophyll fluorescence with excitation at 470 nm and emission at 695 nm and volume scattering function at 140° and 700 nm (Perry);<br />
Biospherical Instruments underwater QSP2300 sensor, measuring scalar underwater photosynthetically active radiation (PAR; Perry).</p>
<p>For more details, see sensor set up and instrument calibration factors document: b200804_PsaReport.txt</p>
<p>WET Labs C-Star s/n 284 was used on cruise B200804 (deployment cruise on R/S Bjarni Saemundsson). The parameter name beamc_id indicates that C-Star s/n 284 was used for this cruise. Cross calibration of C-Stars is discussed under Data Processing.</p>
from Cruise: B9-2008 <p>CTD rosette deployed from the R/S Bjarni Saemundsson was equipped with following sensors; sensor owner is identified in parenthesis (Marine Research Institute or Perry):</p>
<p>Sea-Bird Electronics 11+ CTD deck unit (Marine Research Institute); Sea-Bird Electronics 9+ CTD (Marine Research Institute); Sea-Bird Electronics 43 oxygen sensor (Marine Research Institute); WET Labs ECO FLNTU, measuring chlorophyll fluorescence with excitation at 470 nm and emission at 695 nm and volume scattering function at 140° and 700 nm (Perry); Biospherical Instruments underwater QSP2300 sensor, measuring scalar underwater photosynthetically active radiation (PAR; Perry).</p>
<p>During the cast 289a, WET Labs FLNTU sensor (parameters chl_raw and bbp700) was covered with black electrical tape, which allowed dark counts to be determined in situ.</p>
<p>For more details, see sensor set up and instrument calibration factors document: b200809_PsaReport.txt</p>
from Cruise: B10-2008 <p>CTD rosette deployed from the R/S Bjarni Saemundsson was equipped with following sensors. Sensor owner is identified in parenthesis (Marine Research Institute or Perry):<br />
Sea-Bird Electronics 11+ CTD deck unit (Marine Research Institute);<br />
Sea-Bird Electronics 9+ CTD (Marine Research Institute);<br />
Sea-Bird Electronics 43 oxygen sensor (Marine Research Institute);<br />
WET Labs ECO FLNTU, measuring chlorophyll fluorescence with excitation at 470 nm and emission at 695 nm and volume scattering function at 140° and 700 nm (Perry);<br />
WET Labs C-Star transmissometer, measuring transmission at 653 nm (s/n 284, loaned to Perry);<br />
Biospherical Instruments underwater QSP2300 sensor, measuring scalar underwater photosynthetically active radiation (PAR; Perry).</p>
<p>During the cast 302, WET Labs FLNTU sensor (parameters chl_raw and bbp700) was covered with black electrical tape, which allowed dark counts to be determined in situ.</p>
<p>For more details, see sensor set up and instrument calibration factors document: b200810_PsaReport.txt</p>
<p>WET Labs C-Star s/n 1090 malfunctioned on casts 290a, 291, 292 and 294. The data from these casts have been removed. The parameter name beamc_id indicates which C-Star was used (s/n 1090). Cross calibration of C-Stars is discussed under Data Processing.</p>
Specified by the Principal Investigator(s)
from Cruise: KN193-03 <p>Temperature and salinity (parameter names temp and sal): The CTD had dual CT sensors. For profiles where the two sensors agreed, a 51- (2.1 s) point median filter was applied to the mean of the two sensors. For profiles or regions of the profile where the two sensors disagreed, data from the sensor with the lesser variability was chosen and a 101-point (4.2 s) median filter was applied to only that sensor. Further manual smoothing was performed for a few casts. For more details on temperature and salinity processing, see Ship_TS_despiking-NAB08.pdf.</p>
<p>Dissolved oxygen, O2 (parameter name O2_cal): The sensor was calibrated immediately before the cruise. The factory calibration was applied to SBE43 oxygen sensor output and data were converted to µmol kg-1 and aligned with Winkler O2 measurements (included in KN193-03 bottle file). A time-dependent quadratic correction was applied to the SBE data, with resulting measurement error of 3.2 µmol kg-1. For more details, see Oxygen_Calibration-NAB08.pdf.</p>
<p>Particulate attenuation coefficient, cp (parameter name beam_cp): The factory calibration was used to convert C-Star s/n 1090 voltage to particulate attenuation coefficient, cp, m-1); the calibration factor did not change between pre-cruise and post-cruise factory calibration. C-Star s/n 284 was cross calibrated with C-Star s/n 1090 through a series of simultaneous ship/Biofloat48 calibration profiles. The final product contains cross-calibrated cp coefficients for all three C-Stars. Complete details of the transmissometer intercalibration procedure are in C-Star calibration report (C-Star_Calibration-NAB08.pdf).</p>
<p>Particulate organic carbon (POC) derived from cp (parameter name POC_cp): A linear regression was calculated to convert cp to POC using POC measurements from bottle samples (KN19303_bottle_file.mat). The cp values used in the regression were median cp values from a 30-s stationary period immediately before the bottle was fired; only data from C-Star s/n 1090 were used in the regression. These data are reported in the accompanying bottle file (KN19303_bottle.mat). The regression used to derive the POC product (poc_cp) from cp is:<br />
POC (mg C m-3) = cp (m-1) * 408 (mg C m-2) – 10 (mg C m-3); r2 = 0.80,<br />
This relationship is empirical and it should not be applied to the other cruises without independent verification. For more details, see POC_cp_bbp_Calibration-NAB08.pdf.</p>
<p>Particulate backscattering coefficient, bbp (parameter name bbp700): Backscattering voltage was converted to ? at 140° by subtracting dark voltages (median in-situ dark voltage, 0.078 V) and multiplying by factory calibration scale factors, modified based on measurements and calculations of Sullivan et al. (subm.). The calibration factor did not change between pre-cruise and post-cruise factory calibration. ? at 140° was converted to bbp (m-1) by subtracting ? of seawater (Zhang et al., 2009) and multiplying by 2?? (where ? = 1.132). See calibration report for more details: Backscatter_Calibration-NAB08.pdf.</p>
<p>Particulate organic carbon (POC) derived from bbp (parameter name POC_bbp): Ship-based bbp estimates over the entire experiment were ~20% higher on the CTD downcasts than the upcasts. This systematic difference may be due to the optical properties of aggregates (Briggs, 2010), but remains under investigation. Downcast data only are included for the CTD profiles (parameter name bbp700). Because of the systematic difference between bbp on the downcast vs. upcast and ~30-s stationary period, the relationship between stationary bbp and POC data in the bottle file cannot be directly applied to calculate downcast bbp to POC. Hence, the regression equation below was used to generate the POC product from downcast data: an 11-point (11 s) median filter was applied to the downcast bbp data, and bbp data were interpolated in density space to align downcast and upcast bbp. This data set was used to produce a regression for application to downcast bbp:<br />
POC (mg C m-3) = bbp_downcast (m-1) * 35800 (mg C m-2) – 16.2 (mg C m-3); r2 = 0.81.<br />
This relationship is empirical and it should not be applied to the other cruises without independent verification. For more details, see POC_cp_bbp_Calibration-NAB08.pdf.</p>
<p>Chlorophyll concentration (parameter name chl_a_derived): Chlorophyll fluorescence (parameter name chl_raw) is reported as the raw instrument voltage output minus dark counts (median in situ dark voltage = 0.083 volts). An algorithm to convert chlorophyll fluorescence to chlorophyll concentration (mg chlorophyll m-3) was developed for the R/V Knorr data using an empirical relationship between extracted chlorophyll and the following in-situ measurements: chlorophyll fluorescence, temperature, PAR, depth and time. This relationship is empirical and it should not be applied to the other cruise data without independent verification. For more details see Chlorophyll Calibration document (Chlorophyll_Calibration-NAB08.pdf) and Bagniewski et al. (subm.). Matlab code for calculation of this chlorophyll proxy: chlorophyll_proxy_calculation_NAB08.m.</p>
<p>Surface PAR (parameter name SPAR): Calibration coefficients for surface PAR sensor were incorrect in the original SBE configuration file. The incorrect coefficients were removed in the post processing and correct coefficients were applied to the data. The sensor was new and calibrated before the cruise. For more details, see Radiometry_and_PAR_Calibration-NAB08.pdf.</p>
<p>Water column photosynthetically active radiation (parameter name PAR): Reported values for water column PAR might have a positive bias of ~0.08 µmol photon m^-2 s^-1 based on discrepancies between factory calibration sheet and value used in the SBE configuration file. This error is very small and usually less than or similar to calibration associated error, as noted in the factory calibrations. For more details, see Radiometry_and_PAR_Calibration-NAB08.pdf.</p>
<p>CDOM fluorescence (parameter name CDOM) is reported as raw, uncalibrated values; no calibration or dark values were available for this borrowed sensor.</p>
<p>Broad angle sidescattering at 880 nm (parameter name ss880_raw) is reported as raw, uncalibrated values; no calibration or dark values were available for this sensor.</p>
from Cruise: B4-2008 <p>CTD data are reported as cast number and not as station number.</p>
<p>Temperature and salinity (parameter names temp and sal): On the R/S Bjarni Saemundsson cruises, only one CTD unit was present, so salinity and temperature were de-spiked using a 21-point (3.5 s) median filter. An additional 81-point (13 s) median filter was applied where the signal was particularly variable. For more details on temperature and salinity processing, see Ship_TS_despiking-NAB08.pdf.</p>
<p>Dissolved oxygen, O2 (parameter name O2_uncal): The sensor was calibrated immediately before the 1 April 2008 cruise. The factory calibration was applied to SBE43 oxygen sensor voltage, with units of µmol kg-1. Although the sensor was calibrated immediately before the cruise, the absolute concentrations were not verified by Winkler oxygen.</p>
<p>Particulate attenuation coefficient, cp (parameter name beam_cp): C-Star s/n 284 did not have a recent factory calibration. On the subsequent R/V Knorr cruise in May, it was cross calibrated with the newly calibrated C-Star s/n 1090 through a series of simultaneous ship/Biofloat48 calibration profiles. The final product contains cross-calibrated cp coefficients (m-1) for all three C-Stars. Complete details of the transmissometer intercalibration procedure are in C-Star calibration report (C-Star_Calibration-NAB08.pdf).</p>
<p>Particulate backscattering coefficient, bbp (parameter name bbp700): Backscattering voltage was converted to ? at 140° by subtracting dark voltages (median in-situ dark voltage, 0.078 V) and multiplying by factory calibration scale factors, modified based on measurements and calculations of Sullivan et al. (subm.). The calibration factor did not change between pre-cruise and post-cruise factory calibration. ? at 140° was converted to bbp (m-1) by subtracting ? of seawater (Zhang et al., 2009) and multiplying by 2?? (where ? = 1.132). See calibration report for more details: Backscatter_Calibration-NAB08.pdf.</p>
<p> </p>
<p>Chlorophyll fluorescence: Chlorophyll fluorescence (parameter name chl_raw) is reported as the raw instrument voltage output minus dark voltage (median in situ dark voltage = 0.083 volts).</p>
<p>Water column photosynthetically active radiation (PAR; parameter name par): The sensor was new and freshly calibrated before the cruise. For more details, see Radiometry_and_PAR_Calibration-NAB08.pdf.</p>
from Cruise: B9-2008 <p>CTD data are reported as cast number and not as station number.</p>
<p>Temperature and salinity (parameter names temp and sal): On the R/S Bjarni Saemundsson cruises, only one CTD unit was present, so salinity and temperature were de-spiked using a 21-point (3.5 s) median filter. An additional 81-point (13 s) median filter was applied where the signal was particularly variable. For more details on temperature and salinity processing, see Ship_TS_despiking-NAB08.pdf.</p>
<p>Dissolved oxygen, O2 (parameter name O2_uncal): The sensor was calibrated immediately before the 1 April 2008 cruise. The factory calibration was applied to SBE43 oxygen sensor voltage, with units of µmol kg-1. Although the sensor was calibrated immediately before the cruise, the absolute concentrations were not verified by Winkler oxygen.</p>
<p>Particulate backscattering coefficient, bbp (parameter name bbp700): Backscattering voltage was converted to ? at 140° by subtracting dark voltages (median in-situ dark voltage, 0.078 V) and multiplying by factory calibration scale factors, modified based on measurements and calculations of Sullivan et al. (subm.). The calibration factor did not change between pre-cruise and post-cruise factory calibration. ? at 140° was converted to bbp (m-1) by subtracting ? of seawater (Zhang et al., 2009) and multiplying by 2?? (where ? = 1.132). See calibration report for more details: Backscatter_Calibration-NAB08.pdf.</p>
<p>Chlorophyll fluorescence: Chlorophyll fluorescence (parameter name chl_raw) is reported as the raw instrument voltage output minus dark voltage (median in situ dark voltage = 0.083 volts).</p>
<p>Water column photosynthetically active radiation (parameter name PAR): The sensor was new and freshly calibrated before the cruise. For more details, see Radiometry_and_PAR_Calibration-NAB08.pdf.</p>
from Cruise: B10-2008 <p>CTD data are reported as cast number and not as station number.</p>
<p>Temperature and salinity (parameter names temp and sal): On the R/S Bjarni Saemundsson cruises, only one CTD unit was present, so salinity and temperature were de-spiked using a 21-point (3.5 s) median filter. An additional 81-point (13 s) median filter was applied where the signal was particularly variable. For more details on temperature and salinity processing, see Ship_TS_despiking-NAB08.pdf.</p>
<p>Dissolved oxygen, O2 (parameter name O2_uncal): The sensor was calibrated immediately before the 1 April cruise. The factory calibration was applied to SBE43 oxygen sensor voltage, with units of µmol kg-1. Although the sensor was calibrated immediately before the cruise, the absolute concentrations were not verified by Winkler oxygen.</p>
<p>Particulate attenuation coefficient, cp (parameter name beam_cp): The factory calibration was used to convert C-Star s/n 1090 voltage to particulate attenuation coefficient, cp, (m-1); the calibration factor did not change between pre-cruise and post-cruise factory calibration. C-Star s/n 284 was cross calibrated with C-Star s/n 1090 through a series of simultaneous ship/Biofloat48 calibration profiles. The final product contains cross-calibrated cp coefficients for all three C-Stars. Complete details of the transmissometer intercalibration procedure are in C-Star calibration report (C-Star_Calibration-NAB08.pdf).</p>
<p>Particulate backscattering coefficient, bbp (parameter name bbp700): Backscattering voltage was converted to ? at 140° by subtracting dark voltages (median in-situ dark voltage, 0.078 V) and multiplying by factory calibration scale factors, modified based on measurements and calculations of Sullivan et al. (subm.). The calibration factor did not change between pre-cruise and post-cruise factory calibration. ? at 140° was converted to bbp (m-1) by subtracting ? of seawater (Zhang et al., 2009) and multiplying by 2?? (where ? = 1.132). See calibration report for more details: Backscatter_Calibration-NAB08.pdf.</p>
<p>Chlorophyll fluorescence: Chlorophyll fluorescence (parameter name chl_raw) is reported as the raw instrument voltage output minus dark voltage (median in situ dark voltage = 0.083 volts).</p>
<p>Water column photosynthetically active radiation (parameter name PAR): The sensor was new and freshly calibrated before the cruise. For more details, see Radiometry_and_PAR_Calibration-NAB08.pdf.</p>
Specified by the Principal Investigator(s)
asNeeded
7.x-1.1
Biological and Chemical Oceanography Data Management Office (BCO-DMO)
Unavailable
508-289-2009
WHOI MS#36
Woods Hole
MA
02543
USA
info@bco-dmo.org
http://www.bco-dmo.org
Monday - Friday 8:00am - 5:00pm
For questions regarding this resource, please contact BCO-DMO via the email address provided.
pointOfContact
QSR-240
QSR-240
PI Supplied Instrument Name: QSR-240 Instrument Name: Biospherical QSR-240 surface PAR Instrument Short Name:QSR-240 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. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0071/
CTD Sea-Bird SBE 911plus
CTD Sea-Bird SBE 911plus
PI Supplied Instrument Name: CTD Sea-Bird SBE 911plus Instrument Name: CTD Sea-Bird SBE 911plus Instrument Short Name:CTD SBE 911plus Instrument 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 Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0058/
LI-COR Biospherical PAR Sensor
LI-COR Biospherical PAR Sensor
PI Supplied Instrument Name: LI-COR Biospherical PAR Sensor Instrument Name: LI-COR Biospherical PAR Sensor Instrument Short Name:LI-COR Biospherical PAR Instrument Description: The LI-COR Biospherical PAR Sensor is used to measure Photosynthetically Available Radiation (PAR) in the water column. This instrument designation is used when specific make and model are not known. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0074/
SBE 43 Dissolved Oxygen Sensor
SBE 43 Dissolved Oxygen Sensor
PI Supplied Instrument Name: SBE 43 Dissolved Oxygen Sensor Instrument Name: Sea-Bird SBE 43 Dissolved Oxygen Sensor Instrument Short Name:SBE-43 DO Instrument 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 Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0036/
Seapoint Turbidity Meter
Seapoint Turbidity Meter
PI Supplied Instrument Name: Seapoint Turbidity Meter Instrument Name: Seapoint Turbidity Meter Instrument Short Name:Seapoint Turbidity Instrument Description: The Seapoint Turbidity Meter detects light scattered by particles suspended in water, generating an output voltage proportional to turbidity or suspended solids. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0104/
Wet Labs CSTAR Transmissometer
Wet Labs CSTAR Transmissometer
PI Supplied Instrument Name: Wet Labs CSTAR Transmissometer Instrument Name: WET Labs {Sea-Bird WETLabs} C-Star transmissometer Instrument Short Name:WL CSTAR Trans Instrument Description: The C-Star transmissometer has a novel monolithic housing with a highly intgrated opto-electronic design to provide a low cost, compact solution for underwater measurements of beam transmittance. The C-Star is capable of free space measurements or flow-through sampling when used with a pump and optical flow tubes. The sensor can be used in profiling, moored, or underway applications. Available with a 6000 m depth rating.
More information on Sea-Bird website: https://www.seabird.com/c-star-transmissometer/product?id=60762467717 Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0160/
WETStar ECO FLNTU
WETStar ECO FLNTU
PI Supplied Instrument Name: WETStar ECO FLNTU Instrument Name: WETLabs ECO-FLNTU Instrument Short Name:WETLabs ECO-FLNTU Instrument Description: The ECO FLNTU is a dual-wavelength, single-angle sensor for simultaneously determining both chlorophyll fluorescence and turbidity. Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0215/
WETStar CDOM Fluorometer
WETStar CDOM Fluorometer
PI Supplied Instrument Name: WETStar CDOM Fluorometer Instrument Name: WETStar CDOM Fluorometer Instrument Short Name:WETStar CDOM Fluor Instrument Description: The WETStar CDOM fluorometer measuring fluorescence as a proxy for dissolved matter absorption. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/113/
Cruise: KN193-03
KN193-03
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel
KN193-03
Mary Jane Perry
University of Maine
Cruise: B4-2008
B4-2008
Community Standard Description
International Council for the Exploration of the Sea
R/V Bjarni Saemundsson
vessel
B4-2008
Craig M. Lee
University of Washington Applied Physics Laboratory
Cruise: B9-2008
B9-2008
Community Standard Description
International Council for the Exploration of the Sea
R/V Bjarni Saemundsson
vessel
B9-2008
Mary Jane Perry
University of Maine
Cruise: B10-2008
B10-2008
Community Standard Description
International Council for the Exploration of the Sea
R/V Bjarni Saemundsson
vessel
B10-2008
Mary Jane Perry
University of Maine
R/V Knorr
Community Standard Description
International Council for the Exploration of the Sea
R/V Knorr
vessel
Community Standard Description
International Council for the Exploration of the Sea
R/V Bjarni Saemundsson
vessel