http://lod.bco-dmo.org/id/dataset/942699
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
2024-11-01
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Continuous rates of net community production and the O2/Ar data on the US Northeastern Shelf in the SPIROPA project during spring and summer 2018 and 2019.
2025-10-10
publication
2025-10-10
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2025-10-10
publication
https://doi.org/10.26008/1912/bco-dmo.942699.1
Rachel H. R. Stanley
Wellesley College
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: Stanley, R. H. R., Sandwith, Z. O. (2025) Continuous rates of net community production and the O2/Ar data on the US Northeastern Shelf in the SPIROPA project during spring and summer 2018 and 2019. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2025-10-10 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.942699.1 [access date]
NCP on SPIROPA Dataset Description: Methods and Sampling: <p>Water from the underway was pumped into an equilibration cartridge (Liqui-Cel Extra-Flow 2.5x8 model G540). The gas stream was dried with the desiccants Nafion and Drierite and then transferred to a Hiden Quadrupole mass spectrometer via a deactivated fused silica capillary where ion currents of O<sub>2</sub> and Ar, were measured. The system was calibrated by measuring the O<sub>2</sub>/Ar ratio in air for approximately 20 minutes every 6 hours and also by measurements of O<sub>2</sub>/Ar in samples collected into custom-made 300-mL glass bottles and&nbsp;analyzed post-cruise at a shore-based lab using an isotope ratio mass spectrometer. For details on the methods and analysis, see Castillo Cieza et al. (2024). The gas content in the underway water was confirmed to be statistically the same as that in the CTD surface Niskins by repeatedly comparing water from those sources during each cruise.</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1657489 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1657489
completed
Rachel H. R. Stanley
Wellesley College
(781) 283-3122
Department of Chemistry 106 Central St
Wellesley
Massachusetts
02481
United States
rachel.stanley@wellesley.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Cruise
Date
O2_Ar_corrected
Temperature
Salinity
Latitude
Longitude
Cum_Distance
biosat
NCP
gas_transfer_velocity
Hiden Analytical HAL-3F
theme
None, User defined
Cruise identfier
ISO_DateTime_UTC
ratio
water temperature at measurement depth
salinity
latitude
longitude
length
O2 saturation
production
No BCO-DMO term
featureType
BCO-DMO Standard Parameters
Quadrupole Mass Spectrometer
Sea-Bird SBE 45 MicroTSG Thermosalinograph
instrument
BCO-DMO Standard Instruments
AR29
RB1904
TN368
service
Deployment Activity
New England Shelfbreak
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.
Collaborative Research: Shelfbreak Frontal Dynamics: Mechanisms of Upwelling, Net Community Production, and Ecological Implications
http://science.whoi.edu/users/olga/SPIROPA/SPIROPA.html
Collaborative Research: Shelfbreak Frontal Dynamics: Mechanisms of Upwelling, Net Community Production, and Ecological Implications
<p>NSF award abstract:</p>
<p>The continental shelf break of the Middle Atlantic Bight supports a productive and diverse ecosystem. Current paradigms suggest that this productivity is driven by several upwelling mechanisms at the shelf break front. This upwelling supplies nutrients that stimulate primary production by phytoplankton, which in turn leads to enhanced production at higher trophic levels. Although local enhancement of phytoplankton biomass has been observed in some circumstances, such a feature is curiously absent from time-averaged measurements, both from satellites and shipboard sampling. Why would there not be a mean enhancement in phytoplankton biomass as a result of the upwelling? One hypothesis is that grazing by zooplankton prevents accumulation of biomass on seasonal and longer time scales, transferring the excess production to higher trophic levels and thereby contributing to the overall productivity of the ecosystem. However, another possibility is that the net impact of these highly intermittent processes is not adequately represented in long-term means of the observations, because of the relatively low resolution of the in-water measurements and the fact that the frontal enhancement can take place below the depth observable by satellite. The deployment of the Ocean Observatories Initiative (OOI) Pioneer Array south of New England has provided a unique opportunity to test these hypotheses. The combination of moored instrumentation and autonomous underwater vehicles will facilitate observations of the frontal system with unprecedented spatial and temporal resolution. This will provide an ideal four-dimensional (space-time) context in which to conduct a detailed study of frontal dynamics and plankton communities needed to examine mechanisms controlling phytoplankton populations in this frontal system. This project will also: (1) promote teaching, training and learning via participation of graduate and undergraduate students in the research , (2) provide a broad dissemination of information by means of outreach in public forums, printed media, and a video documentary of the field work, and (3) contribute to improving societal well-being and increased economic competitiveness by providing the knowledge needed for science-based stewardship of coastal ecosystems, with particular emphasis on connecting with the fishing industry through the Commercial Fisheries Research Foundation.</p>
<p>The investigators will conduct a set of three cruises to obtain cross-shelf sections of physical, chemical, and biological properties within the Pioneer Array. Nutrient distributions will be assayed together with hydrography to detect the signature of frontal upwelling and associated nutrient supply. The investigators expect that enhanced nutrient supply will lead to changes in the phytoplankton assemblage, which will be quantified with conventional flow cytometry, imaging flow cytometry (Imaging FlowCytobot, IFCB), optical imaging (Video Plankton Recorder, VPR), traditional microscopic methods, and pigment analysis. Zooplankton will be measured in size classes ranging from micro- to mesozooplankton with the IFCB and VPR, respectively, and also with microscopic analysis. Biological responses to upwelling will be assessed by measuring rates of primary productivity, zooplankton grazing, and net community production. These observations will be synthesized in the context of a coupled physical-biological model to test the two hypotheses that can potentially explain prior observations: (1) grazer-mediated control and (2) undersampling. Hindcast simulations will also be used to diagnose the relative importance of the various mechanisms of upwelling. The intellectual merit of this effort stems from our interdisciplinary approach, advanced observational techniques, and integrated analysis in the context of a state-of-the-art coupled model. The project will address longstanding questions regarding hydrodynamics and productivity of an important ecosystem, leading to improved understanding of physical-biological interactions in a complex continental shelf regime. Given the importance of frontal systems in the global coastal ocean, it is expected that knowledge gained will have broad applicability beyond the specific region being studied.</p>
SPIROPA
largerWorkCitation
project
eng; USA
oceans
New England Shelfbreak
-71.5705
-69.9495
38.9437
41.5163
2018-04-16
2019-07-18
Shelf break south of New England, OOI Pioneer Array
0
BCO-DMO catalogue of parameters from Continuous rates of net community production and the O2/Ar data on the US Northeastern Shelf in the SPIROPA project during spring and summer 2018 and 2019.
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/985933.rdf
Name: Cruise
Units: unitless
Description: <p>Cruise ID: AR29, RB1904 or TN368</p>
http://lod.bco-dmo.org/id/dataset-parameter/985934.rdf
Name: Date
Units: unitless
Description: <p>Sampling date and time (UTC)</p>
http://lod.bco-dmo.org/id/dataset-parameter/985935.rdf
Name: O2_Ar_corrected
Units: unitless
Description: <p>Ratio of O2/Ar - has been corrected using air, only the water data is shown</p>
http://lod.bco-dmo.org/id/dataset-parameter/985936.rdf
Name: Temperature
Units: degrees Celsius (°C)
Description: <p>Temperature</p>
http://lod.bco-dmo.org/id/dataset-parameter/985937.rdf
Name: Salinity
Units: PSU
Description: <p>Salinity</p>
http://lod.bco-dmo.org/id/dataset-parameter/985938.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Sampling latitude, south is negative</p>
http://lod.bco-dmo.org/id/dataset-parameter/985939.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Sampling longitude, west is negative</p>
http://lod.bco-dmo.org/id/dataset-parameter/985940.rdf
Name: Cum_Distance
Units: Kilometer (km)
Description: <p>Distance (in km) from the first data point though when the ship backtracks it adds still so is not the physical distance between beginning of cruise but rather reflects the distance traveled</p>
http://lod.bco-dmo.org/id/dataset-parameter/985941.rdf
Name: biosat
Units: percentage (%)
Description: <p>Defined as the ((O2/Ar)smple / (O2/Ar)eq -1)*100. positive values reflect net photosynthesis. negative values reflect net respiration. it represents the % change in O2 saturation due to biological production (since Ar cancels out the physical effects)</p>
http://lod.bco-dmo.org/id/dataset-parameter/985942.rdf
Name: NCP
Units: mmol O2 /m2/day
Description: <p>Net community production. In units of mmol O2 /m2/day integrated throughout the mixed layer. NCP = photosynthesis minus autotrophic and heterotrophic respiration</p>
http://lod.bco-dmo.org/id/dataset-parameter/985943.rdf
Name: gas_transfer_velocity
Units: k (m/d)
Description: <p>Required for calculating NCP from the biological O2 saturation and was determined using NCEP reanalysis winds, the weighting scheme of Reuer et al, 2006. and the gas exchange parameterization of stanley et al 2009. If people want other gas transfer velocities, they can calculate them as desired and use with the oxygen biological saturation to calculate NCP. </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
-1
download
11104363
https://darchive.mblwhoilibrary.org/server/api/core/bitstreams/f3cde131-af9b-4af9-8b52-6665a02821c3/content
download
https://doi.org/10.26008/1912/bco-dmo.942699.1
download
onLine
dataset
<p>Water from the underway was pumped into an equilibration cartridge (Liqui-Cel Extra-Flow 2.5x8 model G540). The gas stream was dried with the desiccants Nafion and Drierite and then transferred to a Hiden Quadrupole mass spectrometer via a deactivated fused silica capillary where ion currents of O<sub>2</sub> and Ar, were measured. The system was calibrated by measuring the O<sub>2</sub>/Ar ratio in air for approximately 20 minutes every 6 hours and also by measurements of O<sub>2</sub>/Ar in samples collected into custom-made 300-mL glass bottles and&nbsp;analyzed post-cruise at a shore-based lab using an isotope ratio mass spectrometer. For details on the methods and analysis, see Castillo Cieza et al. (2024). The gas content in the underway water was confirmed to be statistically the same as that in the CTD surface Niskins by repeatedly comparing water from those sources during each cruise.</p>
Specified by the Principal Investigator(s)
<p>NCP was calculated from the O<sub>2</sub>/Ar ratios by assuming steady state, neglecting horizontal and vertical advection, and therefore using :NCP = ((O2/Ar)smpl/(O2/Ar)eq-1)*[O2]eq*k*<em>ρ</em>&nbsp;</p>
<p>where (O<sub>2</sub>/Ar)<sub>smpl</sub>&nbsp;represents the ratio of O<sub>2</sub>&nbsp;to Ar ion currents detected by the EIMS after being calibrated with bottle data, and (O<sub>2</sub>/Ar)<sub>eq</sub>&nbsp;represents the ratio of equilibrium concentrations of the gases determined from the gases’ solubility&nbsp;(Garcia and Gordon 1992; Hamme and Emerson 2004)&nbsp;at the seawater temperature and salinity,&nbsp;[O<sub>2</sub>]<sub>eq</sub>&nbsp;represents the equilibrium concentration of O<sub>2</sub>&nbsp;at the relevant temperature and salinity (mmol kg<sup>-1</sup>),&nbsp;<em>k</em>&nbsp;is the weighted gas transfer velocity (m d<sup>-1</sup>), and&nbsp;<em>ρ</em>&nbsp;is the density of seawater (kg m<sup>-3</sup>)&nbsp;(Millero and Poisson 1981). The&nbsp;weighted gas transfer velocity is a time-weighted average&nbsp;from over the past 60 d calculated as described in Reuer et al. (2007), with the gas exchange parameterization of Stanley&nbsp;et al. (2009) and wind speeds from NCEP Reanalysis&nbsp;(Kalnay et al., 1996; Kistler et al., 2001).</p>
Specified by the Principal Investigator(s)
* merged files from different cruises into 1
* adjusted parameter names to comply with database requirements
* convert date/time to ISO format
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
Hiden Analytical HAL-3F
Hiden Analytical HAL-3F
PI Supplied Instrument Name: Hiden Analytical HAL-3F PI Supplied Instrument Description:Hiden Quadrupole mass spectrometer HAL-3F for O2/Ar ratios Instrument Name: Quadrupole Mass Spectrometer Instrument Short Name:QMS Instrument Description: A piece of apparatus that consists of an ion source, a mass-to-charge analyser, a detector and a vacuum system and is used to measure mass spectra. The detector is a quadrupole mass-to-charge analyser, which holds the ions in a stable orbit by an electric field generated by four parallel electrodes.
PI Supplied Instrument Name: PI Supplied Instrument Description:Ship's Seabird SBE45 sensors and averaged to 60-second intervals for temperature and salinity Instrument Name: Sea-Bird SBE 45 MicroTSG Thermosalinograph Instrument Short Name:SBE 45 MicroTSG Instrument Description: A small externally powered, high-accuracy instrument, designed for shipboard determination of sea surface (pumped-water) conductivity and temperature. It is constructed of plastic and titanium to ensure long life with minimum maintenance. It may optionally be interfaced to an external SBE 38 hull temperature sensor.
Sea Bird SBE 45 MicroTSG (Thermosalinograph) Community Standard Description: http://vocab.nerc.ac.uk/collection/L22/current/TOOL0190/
Cruise: AR29
AR29
International Council for the Exploration of the Sea
R/V Neil Armstrong
vessel
AR29
Dennis J. McGillicuddy
Woods Hole Oceanographic Institution
Cruise: RB1904
RB1904
Community Standard Description
International Council for the Exploration of the Sea
NOAA Ship Ronald H. Brown
vessel
RB1904
Dennis J. McGillicuddy
Woods Hole Oceanographic Institution
Cruise: TN368
TN368
R/V Thomas G. Thompson
Community Standard Description
International Council for the Exploration of the Sea
R/V Thomas G. Thompson
vessel
TN368
Dennis J. McGillicuddy
Woods Hole Oceanographic Institution
International Council for the Exploration of the Sea
R/V Neil Armstrong
vessel
R/V Thomas G. Thompson
Community Standard Description
International Council for the Exploration of the Sea
R/V Thomas G. Thompson
vessel