http://lod.bco-dmo.org/id/dataset/949808
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
2025-01-28
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Beam attenuation coefficient, scattering, and fluorescence data derived from optical particle sensors deployed during casts of the ODF rosette on the GEOTRACES GP17-OCE cruise aboard R/V Roger Revelle (RR2214) from December 2022 to January 2023
2025-03-13
publication
2025-03-13
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2025-03-25
publication
https://doi.org/10.26008/1912/bco-dmo.949808.1
James K.B. Bishop
University of California-Berkeley
principalInvestigator
Benjamin Twining
Bigelow Laboratory for Ocean Sciences
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: Bishop, J. K., Twining, B. (2025) Beam attenuation coefficient, scattering, and fluorescence data derived from optical particle sensors deployed during casts of the ODF rosette on the GEOTRACES GP17-OCE cruise aboard R/V Roger Revelle (RR2214) from December 2022 to January 2023. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-03-13 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.949808.1 [access date]
GP17 ODF CTD optics data Beam Attenuation Coefficient, Oxygen, and Fluorencence Dataset Description: Methods and Sampling: <p>Calculated Beam Attenuation coefficient from despiked 10-second averaged data sets. The resulting data are further averaged over 5-meter intervals.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1657781 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1657781
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2023315 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2023315
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1736601 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1736601
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-2123942 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=2123942
completed
James K.B. Bishop
University of California-Berkeley
510-642-6110
Department of Earth and Planetary Science 307 McCone Hall
Berkeley
CA
94720
USA
jkbishop@berkeley.edu
pointOfContact
Benjamin Twining
Bigelow Laboratory for Ocean Sciences
207-315-2567
60 Bigelow Drive PO Box 380
East Boothbay
ME
04544-0380
USA
btwining@bigelow.org
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Seapoint scattering sensor (gain setting 10)
SeaBird (formerly WETLabs) Transmissometer CST1874
theme
None, User defined
Turbidity Meter
WET Labs {Sea-Bird WETLabs} C-Star transmissometer
instrument
BCO-DMO Standard Instruments
RR2214
service
Deployment Activity
Papeete, Tahiti to Punta Arenas, Chile
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.
U.S. GEOTRACES
http://www.geotraces.org/
U.S. GEOTRACES
GEOTRACES is a SCOR sponsored program; and funding for program infrastructure development is provided by the U.S. National Science Foundation.
GEOTRACES gained momentum following a special symposium, S02: Biogeochemical cycling of trace elements and isotopes in the ocean and applications to constrain contemporary marine processes (GEOSECS II), at a 2003 Goldschmidt meeting convened in Japan. The GEOSECS II acronym referred to the Geochemical Ocean Section Studies To determine full water column distributions of selected trace elements and isotopes, including their concentration, chemical speciation, and physical form, along a sufficient number of sections in each ocean basin to establish the principal relationships between these distributions and with more traditional hydrographic parameters;
* To evaluate the sources, sinks, and internal cycling of these species and thereby characterize more completely the physical, chemical and biological processes regulating their distributions, and the sensitivity of these processes to global change; and
* To understand the processes that control the concentrations of geochemical species used for proxies of the past environment, both in the water column and in the substrates that reflect the water column.
GEOTRACES will be global in scope, consisting of ocean sections complemented by regional process studies. Sections and process studies will combine fieldwork, laboratory experiments and modelling. Beyond realizing the scientific objectives identified above, a natural outcome of this work will be to build a community of marine scientists who understand the processes regulating trace element cycles sufficiently well to exploit this knowledge reliably in future interdisciplinary studies.
Expand "Projects" below for information about and data resulting from individual US GEOTRACES research projects.
U.S. GEOTRACES
largerWorkCitation
program
US GEOTRACES GP17 Section: South Pacific and Southern Ocean (GP17-OCE)
http://www.geotraces.org/
US GEOTRACES GP17 Section: South Pacific and Southern Ocean (GP17-OCE)
<p>The U.S. GEOTRACES GP17-OCE expedition departed Papeete, Tahiti (French Polynesia) on December 1st, 2022 and arrived in Punta Arenas, Chile on January 25th, 2023. The cruise took place in the South Pacific and Southern Oceans aboard the R/V Roger Revelle (cruise ID RR2214) with a team of 34 scientists lead by Ben Twining (Chief Scientist), Jessica Fitzsimmons and Greg Cutter (Co-Chief Scientists). GP17 was planned as a two-leg expedition, with its first leg (GP17-OCE) as a southward extension of the 2018 GP15 Alaska-Tahiti expedition and a second leg (GP17-ANT; December 2023-January 2024) into coastal and shelf waters of Antarctica's Amundsen Sea.</p>
<p>The South Pacific and Southern Oceans sampled by GP17-OCE play critical roles in global water mass circulation and associated global transfer of heat, carbon, and nutrients. Specific oceanographic regions of interest for GP17-OCE included: the most oligotrophic gyre in the global ocean, the Antarctic Circumpolar Current (ACC) frontal region, the previously unexplored Pacific- Antarctic Ridge, the Pacific Deep Water (PDW) flow along the continental slope of South America, and the continental margin inputs potentially emanating from South America.</p>
<p>Further information is available on the <a href="https://usgeotraces.ldeo.columbia.edu/content/gp17-oce" target="_blank">US GEOTRACES website</a> and in the <a href="https://www.bodc.ac.uk/resources/inventories/cruise_inventory/reports/rogerrevelle_rr2214.pdf" target="_blank">cruise report</a> (PDF).</p>
<p><em>NSF Project Title:</em> Collaborative Research: Management and Implementation of US GEOTRACES GP17 Section: South Pacific and Southern Ocean (GP17-OCE)</p>
<p><em>NSF Award Abstract:</em><br />
This award will support the management and implementation of a research expedition from Tahiti to Chile that will enable sampling for a broad suite of trace elements and isotopes (TEI) across oceanographic regions of importance to global nutrient and carbon cycling as part of the U.S. GEOTRACES program. GEOTRACES is a global effort in the field of Chemical Oceanography, the goal of which is to understand the distributions of trace elements and their isotopes in the ocean. Determining the distributions of these elements and isotopes will increase understanding of processes that shape their distributions, such as ocean currents and material fluxes, and also the processes that depend on these elements, such as the growth of phytoplankton and the support of ocean ecosystems. The proposed cruise will cross the South Pacific Gyre, the Antarctic Circumpolar Current, iron-limited Antarctic waters, and the Chilean margin. In combination with a proposed companion GEOTRACES expedition on a research icebreaker (GP17-ANT) that will be joined by two overlapping stations, the team of investigators will create an ocean section from the ocean's most nutrient-poor waters to its highly-productive Antarctic polar region - a region that plays an outsized role in modulating the global carbon cycle. The expedition will support and provide management infrastructure for additional participating science projects focused on measuring specific external fluxes and internal cycling of TEIs along this section.</p>
<p>The South Pacific Gyre and Pacific sector of the Southern Ocean play critical roles in global water mass circulation and associated global transfer of heat, carbon, and nutrients, but they are chronically understudied for TEIs due to their remote locale. These are regions of strong, dynamic fronts where sub-surface water masses upwell and subduct, and biological and chemical processes in these zones determine nutrient stoichiometries and tracer concentrations in waters exported to lower latitudes. The Pacific sector represents an end member of extremely low external TEI surface fluxes and thus an important region to constrain inputs from the rapidly-changing Antarctic continent. Compared to other ocean basins, TEI cycling in these regions is thought to be dominated by internal cycling processes such as biological uptake, regeneration, and scavenging, and these are poorly represented in global ocean models. The cruise will enable funded investigators to address research questions such as: 1) what are relative rates of external TEI fluxes to this region, including dust, sediment, hydrothermal, and cryospheric fluxes? 2) What are the (micro) nutrient regimes that support productivity, and what impacts do biomass accumulation, export, and regeneration have on TEI cycling and stoichiometries of exported material? 3) What are TEI and nutrient stoichiometries of subducting water masses, and how do scavenging and regeneration impact these during transport northward? This management project has several objectives: 1) plan and coordinate a 55-day research cruise in 2021-2022; 2) use both conventional and trace-metal 'clean' sampling systems to obtain TEI samples, as well as facilitate sampling for atmospheric aerosols and large volume particles and radionuclides; 3) acquire hydrographic data and samples for salinity, dissolved oxygen, algal pigments, and macro-nutrients; and deliver these data to relevant repositories; 4) ensure that proper QA/QC protocols, as well as GEOTRACES intercalibration protocols, are followed and reported; 5) prepare the final cruise report to be posted with data; 6) coordinate between all funded cruise investigators, as well as with leaders of proposed GP17-ANT cruise; and 7) conduct broader impact efforts that will engage the public in oceanographic research using immersive technology. The motivations for and at-sea challenges of this work will be communicated to the general public through creation of immersive 360/Virtual Reality experiences, via a collaboration with the Texas A&M University Visualization LIVE Lab. Through Virtual Reality, users will experience firsthand what life and TEI data collection at sea entail. Virtual reality/digital games and 360° experiences will be distributed through GEOTRACES outreach websites, through PI engagement with local schools, libraries, STEM summer camps, and adult service organizations, and through a collaboration with the National Academy of Sciences.</p>
GP17-OCE
largerWorkCitation
project
Autonomous Ocean Carbon Observer Development and Calibration
https://osprey.bco-dmo.org/project/939792
Autonomous Ocean Carbon Observer Development and Calibration
<p><em><strong>NSF Award Abstract</strong></em><br />
The very fast and dynamic ocean biological carbon pump (OBCP) plays a fundamental role in the global carbon cycle and in setting concentrations of atmospheric carbon dioxide. Photosynthetic organisms that that fuel the OCBP live and die on a week to week basis, and the resulting sinking (or export) of organic and inorganic carbon particles from the surface layer and consumption losses of these particles in deeper waters are similarly variable. Simply stated, the OCBP is poorly understood due to dependence on short- term, and seasonally and spatially limited ship observations; thus model estimates of its strength and future trajectory are highly uncertain. To address this gap, the investigators will engineer and sea-test two robotic Lagrangian Ocean Carbon Observer (OCO) floats capable of 8 month to multi-year missions, yet able to resolve flux processes on hourly to daily time scales and relay data in real time via satellite telemetry while operating anywhere in the ocean. The development of the OCO enables the identification of specific pathways and controls on the vertical transfer of particulate organic and inorganic carbon (POC and PIC) from the surface ocean to subsurface waters. The project logically follows on from the investigator’s development and successful deployment of robotic Lagrangian Carbon Explorer (CE) and Carbon Flux Explorer (CFE) floats, which measure optically POC and PIC concentration and flux variability to depths of 1000 m. A unique capability of the CFE is that it is able to measure the sinking flux of carbon carried by different sizes and classes of particles. The project will merge CFE and CE capabilities to create the OCO. The team will contribute to the development of a STEM workforce by engaging UC Berkeley undergraduates and one graduate student in all phases (development, laboratory, seagoing, and interpretive) of the project and in the class room.</p>
<p>Specifically, CFEs and two new Ocean Carbon Observers (OCOs) that simultaneously measure both particle flux and concentration profiles will be constructed and test-deployed at sea in January 2023. During the times that these autonomous instruments drift at target depths within the upper kilometer (interrupted by transit to the surface for location and real time bidirectional telemetry), they will autonomously quantify the inherent optical properties and size distributions of sinking material captured. Bishop et al. (2016; Biogeosciences 13, 3019-3129, doi:10.5194/bg-13-3109) describe CFE capabilities and methodology for rendering raw OSR imagery to rigorously defined inherent optical measures of particle loading -- attenuance and cross-polarized photon yield. Bourne et al. (2019; Biogeosciences, 16, 1249-1264; doi:10.5194/bg-16-1249-2019) show that attenuance is strongly correlated (r^2 > 0.86) with POC and PN sampled at 150 m by sampler-equipped CFEs “(CFE-Cal floats)” over a broad range of particle flux and particle size distributions. Planned further deployment of the CFE-Cal floats to sample sinking material to depths of at least 500 m will enable validation of our calibration of the attenuance proxy and to enable a first calibration of the PIC optical flux proxy. Bourne et al. (2021; Biogeosciences, 18, 3053–3086, doi:10.5194/bg-18-3053-2021) demonstrate the unique capability of CFEs to resolve and quantify the vertical flux carried by different particle size classes in the mesopelagic; furthermore, they describe prototype algorithms that will lead to flux size-distribution analysis in real time on the CFEs. The project will enable fully autonomous long-term deployments of CFE and OCO systems in the global ocean. The involvement a commercial float vendor (MRV Systems) and sensor manufacturer (Seabird Scientific) may lead to a commercialization pathway for the OCO.</p>
OCO Development
largerWorkCitation
project
eng; USA
oceans
Papeete, Tahiti to Punta Arenas, Chile
-152.0002
-75.0972
-67.0002
-19.9998
2022-12-04
2023-01-24
From projects that focused on the following 2 locations: 1. Papeete, Tahiti to Punta Arenas, Chile 2. Pacific Ocean
0
BCO-DMO catalogue of parameters from Beam attenuation coefficient, scattering, and fluorescence data derived from optical particle sensors deployed during casts of the ODF rosette on the GEOTRACES GP17-OCE cruise aboard R/V Roger Revelle (RR2214) from December 2022 to January 2023
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
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
2497296
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/3573d64a-cfb6-46b3-8739-bb711205c70d/content
download
753064
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/fb3fce37-0fd7-4b7d-a243-9142be04e3f2/content
download
https://doi.org/10.26008/1912/bco-dmo.949808.1
download
onLine
dataset
<p>Calculated Beam Attenuation coefficient from despiked 10-second averaged data sets. The resulting data are further averaged over 5-meter intervals.</p>
Specified by the Principal Investigator(s)
<p>The data from Transmissometer 1874 was recalculated using<br />
<br />
# dt=temp-t391 ; calculated difference between water temperature and instrument temperature<br />
<br />
# cst1874c=(cst1874-0.0024)/cst1874r ; cst1874r is a temperature response function derived from WETLabs thermal cycling tests. ; 0.0024 is the blocked beam voltage on the CTD<br />
<br />
# cst1874cc=cst1874c+dt/1300 ; corrects for hysteresis in the thermoclone<br />
<br />
# cst1874tr=cst1874cc/(cst1874_NETVrefUSE) ; transmission ratio ; cst1874_NETVrefUSE is the zero corrected reading the transmissometer would have in particle free seawater.<br />
<br />
# cp1874=-4*ln(cst1874tr) ; calculation of beam attenuation coefficient<br />
<br />
the data from Fluorometer Voltages was offset and multiplied to agree with Seapoint Fluorometer data on the GTC CTD. Relative units.</p>
<p>The following GEOTRACES parameter names have been registered in DOoR:</p>
<p>CTDBEAMCP_T_VALUE_SENSOR::kpdsqt</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
Seapoint scattering sensor (gain setting 10)
Seapoint scattering sensor (gain setting 10)
PI Supplied Instrument Name: Seapoint scattering sensor (gain setting 10) Instrument Name: Turbidity Meter Instrument Short Name:Turbidity Meter Instrument Description: A turbidity meter measures the clarity of a water sample. A beam of light is shown through a water sample. The turbidity, or its converse clarity, is read on a numerical scale. Turbidity determined by this technique is referred to as the nephelometric method from the root meaning "cloudiness". This word is used to form the name of the unit of turbidity, the NTU (Nephelometric Turbidity Unit). The meter reading cannot be used to compare the turbidity of different water samples unless the instrument is calibrated. Description from: http://www.gvsu.edu/wri/education/instructor-s-manual-turbidity-10.htm
(One example is the Orion AQ4500 Turbidimeter)
SeaBird (formerly WETLabs) Transmissometer CST1874
SeaBird (formerly WETLabs) Transmissometer CST1874
PI Supplied Instrument Name: SeaBird (formerly WETLabs) Transmissometer CST1874 PI Supplied Instrument Description:The transmissometer used was a SeaBird transmissometer operating at 650 nM. They used to be made by WETLabs Inc., Philomath, OR. The complete ID is CST1874DR (meaning it was 6000 m rated and operating at a red wavelength of 650 nm). See: https://www.seabird.com/c-star-transmissometer/product?id=60762467717 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/
Cruise: RR2214
RR2214
R/V Roger Revelle
Community Standard Description
International Council for the Exploration of the Sea
R/V Roger Revelle
vessel
RR2214
Benjamin Twining
Bigelow Laboratory for Ocean Sciences
https://www.bodc.ac.uk/resources/inventories/cruise_inventory/reports/rogerrevelle_rr2214.pdf
Report describing RR2214
R/V Roger Revelle
Community Standard Description
International Council for the Exploration of the Sea
R/V Roger Revelle
vessel