http://lod.bco-dmo.org/id/dataset/943861
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
2024-11-18
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Estimates of Euphotic Zone (EZ) depths from R/V Roger Revelle cruise RR2201 in the Eastern Indian Ocean (Argo Basin) from February to March 2022
2024-11-18
publication
2024-11-18
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2024-11-27
publication
https://doi.org/10.26008/1912/bco-dmo.943861.1
Michael R. Landry
University of California-San Diego Scripps
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: Landry, M. R. (2024) Estimates of Euphotic Zone (EZ) depths from R/V Roger Revelle cruise RR2201 in the Eastern Indian Ocean (Argo Basin) from February to March 2022. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-11-18 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.943861.1 [access date]
Euphotic Zone Dataset Description: Methods and Sampling: <p>Euphotic Zone (EZ) depth was defined as the depth at which photosynthetically available radiation (PAR) was 1% of incident surface radiation. Mean light extinction coefficients (Ext Coeff, m-1) were calculated from PAR sensor readings at 5 and 100 meters from CTD downcast profiles at 1-meter resolution according to the equation:</p>
<p>Ext Coeff = -ln(PAR100m/PAR5m)/95.</p>
<p>Euphotic Zone (m) was calculated as EZ = -ln(0.01)/(Ext Coeff).</p>
<p>The RR2201 cruise report can be found at <a href="http://hdl.handle.net/1834/43464" target="_blank">http://hdl.handle.net/1834/43464</a>.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1851558 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1851558
completed
Michael R. Landry
University of California-San Diego Scripps
858-534-4702
9500 Gilman Drive Mail Code: 0227
La Jolla
CA
92093-0227
USA
mlandry@ucsd.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Cruise
Event
ISO_DateTime_UTC
Latitude
Longitude
Cycle_Day
CTD_Cast
PAR_5m
PAR_100m
Ext_Coeff
EZ_1pcnt
QSP-2000, Quantum Scalar PAR Sensor, Biospherical Instruments
Seabird SBE 9plus CTD
theme
None, User defined
cruise_id
event
ISO_DateTime_UTC
latitude
longitude
No BCO-DMO term
cast
PAR
featureType
BCO-DMO Standard Parameters
Biospherical PAR sensor
CTD Sea-Bird
instrument
BCO-DMO Standard Instruments
RR2201
service
Deployment Activity
Eastern Indian Ocean (Argo Basin)
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.
Second International Indian Ocean Expedition
https://web.whoi.edu/iioe2/
Second International Indian Ocean Expedition
Description from the program website:
The Second International Indian Ocean Expedition (IIOE-2) is a major global scientific program which will engage the international scientific community in collaborative oceanographic and atmospheric research from coastal environments to the deep sea over the period 2015-2020, revealing new information on the Indian Ocean (i.e. its currents, its influence upon the climate, its marine ecosystems) which is fundamental for future sustainable development and expansion of the Indian Ocean's blue economy. A large number of scientists from research institutions from around the Indian Ocean and beyond are planning their involvement in IIOE-2 in accordance with the overarching six scientific themes of the program. Already some large collaborative research projects are under development, and it is anticipated that by the time these projects are underway, many more will be in planning or about to commence as the scope and global engagement in IIOE-2 grows.
Focused research on the Indian Ocean has a number of benefits for all nations. The Indian Ocean is complex and drives the region's climate including extreme events (e.g. cyclones, droughts, severe rains, waves and storm surges). It is the source of important socio-economic resources (e.g. fisheries, oil and gas exploration/extraction, eco-tourism, and food and energy security) and is the background and focus of many of the region's human populations around its margins. Research and observations supported through IIOE-2 will result in an improved understanding of the ocean's physical and biological oceanography, and related air-ocean climate interactions (both in the short-term and long-term). The IIOE-2's program will complement and harmonise with other regional programs underway and collectively the outcomes of IIOE-2 will be of huge benefit to individual and regional sustainable development as the information is a critical component of improved decision making in areas such as maritime services and safety, environmental management, climate monitoring and prediction, food and energy security.
IIOE-2 activities will also include a significant focus on building the capacity of all nations around the Indian Ocean to understand and apply observational data or research outputs for their own socio-economic requirements and decisions. IIOE-2 capacity building programs will therefore be focused on the translation of the science and information outputs for societal benefit and training of relevant individuals from surrounding nations in these areas.
A Steering Committee was established to support U.S. participation in IIOE-2. More information is available on their website at https://web.whoi.edu/iioe2/.
IIOE-2
largerWorkCitation
program
Collaborative Research: Mesoscale variability in nitrogen sources and food-web dynamics supporting larval southern bluefin tuna in the eastern Indian Ocean
https://osprey.bco-dmo.org/project/819488
Collaborative Research: Mesoscale variability in nitrogen sources and food-web dynamics supporting larval southern bluefin tuna in the eastern Indian Ocean
<p><em>NSF Award Abstract:</em><br />
The small area between NW Australia and Indonesia in the eastern Indian Ocean (IO) is the only known spawning ground of Southern Bluefin Tuna (SBT), a critically endangered top marine predator. Adult SBT migrate thousands of miles each year from high latitude feeding areas to lay their eggs in these tropical waters, where food concentrations on average are below levels that can support optimal feeding and growth of their larvae. Many critical aspects of this habitat are poorly known, such as the main source of nitrogen nutrient that sustains system productivity, how the planktonic food web operates to produce the unusual types of zooplankton prey that tuna larvae prefer, and how environmental differences in habitat quality associated with ocean fronts and eddies might be utilized by adult spawning tuna to give their larvae a greater chance for rapid growth and survival success. This project investigates these questions on a 38-day expedition in early 2021, during the peak time of SBT spawning. This project is a US contribution to the 2nd International Indian Ocean Expedition (IIOE-2) that advances understanding of biogeochemical and ecological dynamics in the poorly studied eastern IO. This is the first detailed study of nitrogen and carbon cycling in the region linking Pacific and IO waters. The shared dietary preferences of SBT larvae with those of other large tuna and billfish species may also make the insights gained broadly applicable to understanding larval recruitment issues for top consumers in other marine ecosystems. New information from the study will enhance international management efforts for SBT. The shared larval dietary preferences of large tuna and billfish species may also extend the insights gained broadly to many other marine top consumers, including Atlantic bluefin tuna that spawn in US waters of the Gulf of Mexico. The end-to-end study approach, highlights connections among physical environmental variability, biogeochemistry, and plankton food webs leading to charismatic and economically valuable fish production, is the theme for developing educational tools and modules through the "scientists-in-the-schools" program of the Center for Ocean-Atmospheric Prediction Studies at Florida State University, through a program for enhancing STEM learning pathways for underrepresented students in Hawaii, and through public outreach products for display at the Birch Aquarium in San Diego. The study also aims to support an immersive field experience to introduce talented high school students to marine research, with the goal of developing a sustainable marine-related educational program for underrepresented students in rural northwestern Florida.</p>
<p>Southern Bluefin Tuna (SBT) migrate long distances from high-latitude feeding grounds to spawn exclusively in a small oligotrophic area of the tropical eastern Indian Ocean (IO) that is rich in mesoscale structures, driven by complex currents and seasonally reversing monsoonal winds. To survive, SBT larvae must feed and grow rapidly under environmental conditions that challenge conventional understanding of food-web structure and functional relationships in poor open-ocean systems. The preferred prey of SBT larvae, cladocerans and Corycaeidae copepods, are poorly studied and have widely different implications for trophic transfer efficiencies to larvae. Differences in nitrogen sources - N fixation vs deep nitrate of Pacific origin - to sustain new production in the region also has implications for conditions that may select for prey types (notably cladocerans) that enhance transfer efficiency and growth rates of SBT larvae. The relative importance of these N sources for the IO ecosystem may affect SBT resiliency to projected increased ocean stratification. This research expedition investigates how mesoscale variability in new production, food-web structure and trophic fluxes affects feeding and growth conditions for SBT larvae. Sampling across mesoscale features tests hypothesized relationships linking variability in SBT larval feeding and prey preferences (gut contents), growth rates (otolith analyses) and trophic positions (TP) to the environmental conditions of waters selected by adult spawners. Trophic Positions of larvae and their prey are determined using Compound-Specific Isotope Analyses of Amino Acids (CSIA-AA). Lagrangian experiments investigate underlying process rates and relationships through measurements of water-column 14C productivity, N2 fixation, 15NO3- uptake and nitrification; community biomass and composition (flow cytometry, pigments, microscopy, in situ imaging, genetic analyses); and trophic fluxes through micro- and mesozooplankton grazing, remineralization and export. Biogeochemical and food web elements of the study are linked by CSIA-AA (N source, TP), 15N-constrained budgets and modeling. The project elements comprise an end-to-end coupled biogeochemistry-trophic study as has not been done previously for any pelagic ecosystem.</p>
<p>This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.</p>
BLOOFINZ-IO
largerWorkCitation
project
eng; USA
oceans
Eastern Indian Ocean (Argo Basin)
114.157
119.497
-17.182
-13.01
2022-02-04
2022-03-01
Eastern Indian Ocean, Indonesian Throughflow area, and the Gulf of Mexico
0
BCO-DMO catalogue of parameters from Estimates of Euphotic Zone (EZ) depths from R/V Roger Revelle cruise RR2201 in the Eastern Indian Ocean (Argo Basin) from February to March 2022
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/943922.rdf
Name: Cruise
Units: unitless
Description: <p>Cruise ID (RR2201)</p>
http://lod.bco-dmo.org/id/dataset-parameter/943923.rdf
Name: Event
Units: unitless
Description: <p>unique event number in UTC time as YYYYMMDD.mmss.###, where ### distinguishes events entered within the same minute</p>
http://lod.bco-dmo.org/id/dataset-parameter/943924.rdf
Name: ISO_DateTime_UTC
Units: unitless
Description: <p>Date and time (UTC) of CTD deployment in ISO 8601 format</p>
http://lod.bco-dmo.org/id/dataset-parameter/943925.rdf
Name: Latitude
Units: decimal degrees
Description: <p>latitude (North is positive; South is negative)</p>
http://lod.bco-dmo.org/id/dataset-parameter/943926.rdf
Name: Longitude
Units: decimal degrees
Description: <p>longitude (East is positive; West is negative)</p>
http://lod.bco-dmo.org/id/dataset-parameter/943927.rdf
Name: Cycle_Day
Units: unitless
Description: <p>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. ARGO station number</p>
http://lod.bco-dmo.org/id/dataset-parameter/943928.rdf
Name: CTD_Cast
Units: unitless
Description: <p>CTD cast number in Event Log</p>
http://lod.bco-dmo.org/id/dataset-parameter/943929.rdf
Name: PAR_5m
Units: umoles of photons m-2 s-1
Description: <p>PAR reading at 5 meters</p>
http://lod.bco-dmo.org/id/dataset-parameter/943930.rdf
Name: PAR_100m
Units: umoles of photons m-2 s-1
Description: <p>PAR reading at 100 meters</p>
http://lod.bco-dmo.org/id/dataset-parameter/943931.rdf
Name: Ext_Coeff
Units: reciprocal meters (m-1)
Description: <p>mean light extinction coefficient 5-100 meters</p>
http://lod.bco-dmo.org/id/dataset-parameter/943932.rdf
Name: EZ_1pcnt
Units: meters (m)
Description: <p>depth of the 1% euphotic zone</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
4534
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/c91b28c7-1e46-4bb9-8d05-b874d2a340e1/content
download
https://doi.org/10.26008/1912/bco-dmo.943861.1
download
onLine
dataset
<p>Euphotic Zone (EZ) depth was defined as the depth at which photosynthetically available radiation (PAR) was 1% of incident surface radiation. Mean light extinction coefficients (Ext Coeff, m-1) were calculated from PAR sensor readings at 5 and 100 meters from CTD downcast profiles at 1-meter resolution according to the equation:</p>
<p>Ext Coeff = -ln(PAR100m/PAR5m)/95.</p>
<p>Euphotic Zone (m) was calculated as EZ = -ln(0.01)/(Ext Coeff).</p>
<p>The RR2201 cruise report can be found at <a href="http://hdl.handle.net/1834/43464" target="_blank">http://hdl.handle.net/1834/43464</a>.</p>
Specified by the Principal Investigator(s)
- Imported original file "Euphotic Zone_BCO_DMO Submission.xlsx" into the BCO-DMO system.
- Renamed fields to comply with BCO-DMO naming conventions.
- Converted the "DateTimeUTC" column to ISO 8601 format and renamed "ISO_DateTime_UTC".
- Saved final file as "943861_v1_rr2201_euphotic_zone.csv"
Specified by BCO-DMO Data Managers
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
QSP-2000, Quantum Scalar PAR Sensor, Biospherical Instruments
QSP-2000, Quantum Scalar PAR Sensor, Biospherical Instruments
PI Supplied Instrument Name: QSP-2000, Quantum Scalar PAR Sensor, Biospherical Instruments Instrument Name: Biospherical PAR sensor Instrument Short Name: Instrument Description: An irradiance sensor designed to measure Photosynthetically Active Radiation (PAR), manufactured by Biospherical Instruments Inc.
Seabird SBE 9plus CTD
Seabird SBE 9plus CTD
PI Supplied Instrument Name: Seabird SBE 9plus CTD Instrument Name: CTD Sea-Bird Instrument Short Name:CTD Sea-Bird Instrument Description: A Conductivity, Temperature, Depth (CTD) sensor package from SeaBird Electronics. This instrument designation is used when specific make and model are not known or when a more specific term is not available in the BCO-DMO vocabulary. Refer to the dataset-specific metadata for more information about the specific CTD used. More information from: http://www.seabird.com/ Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/130/
Cruise: RR2201
RR2201
R/V Roger Revelle
Community Standard Description
International Council for the Exploration of the Sea
R/V Roger Revelle
vessel
RR2201
Michael R. Landry
University of California-San Diego Scripps
http://hdl.handle.net/1834/43464
Report describing RR2201
R/V Roger Revelle
Community Standard Description
International Council for the Exploration of the Sea
R/V Roger Revelle
vessel