http://lod.bco-dmo.org/id/dataset/931760
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
2024-07-03
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Programmable Flow Injection (pFI) Silicate Underway Data from R/V Investigator IN2023_V04 in the Southern Ocean during June 2023 (pFI-SI-LOV project)
2024-07-03
publication
2024-07-03
revision
BCO-DMO Linked Data URI
2024-07-03
creation
http://lod.bco-dmo.org/id/dataset/931760
Maxime Grand
Moss Landing Marine Laboratories
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: Grand, M. (2024) Programmable Flow Injection (pFI) Silicate Underway Data from R/V Investigator IN2023_V04 in the Southern Ocean during June 2023 (pFI-SI-LOV project). Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2024-07-03 [if applicable, indicate subset used]. http://lod.bco-dmo.org/id/dataset/931760 [access date]
Programmable Flow Injection (pFI) silicate underway data Dataset Description: Methods and Sampling: <p>Unfiltered seawater samples from the RV Investigator underway lab were aspirated using&nbsp;an auxiliary diaphragm pump (KNF, USA)&nbsp;into a 3 mL sample loop every 15-30 min during the deployment. The stored samples were immediately analyzed for silicate in duplicate using the pFI assay protocol outlined in Hatta et al. (2021). One key modification was adjusting the holding coils’ temperatures to 25ºC instead of the originally specified 50ºC.&nbsp;In tandem with this temperature change, the stop flow time in the flow cell was extended to 60 seconds to ensure the absorbance of the silicomolybdenum blue at 660 nm product reached a steady state.&nbsp;</p>
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1924539 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1924539
onGoing
Maxime Grand
Moss Landing Marine Laboratories
8317714447
8272 Moss Landing Rd
Moss Landing
CA
950399647
US
mgrand@mlml.calstate.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Time_UTC
Latitude
Longitude
Mean_pFI_Si_OH_4_concentration
mean_pFI_flag
Depth
theme
None, User defined
Date and time
latitude
longitude
Silicate, Si(OH)4, silicic acid
quality flag
depth
featureType
BCO-DMO Standard Parameters
IN2023_V04
service
Deployment Activity
Southern Ocean, South of Australia
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: Developing Automated Nutrient and Trace Metal Methodology using Programmable Flow Injection
https://osprey.bco-dmo.org/project/815753
Collaborative Research: Developing Automated Nutrient and Trace Metal Methodology using Programmable Flow Injection
<p>NSF Award Abstract:</p>
<p>Progress and discovery in the understanding of the chemical processes that regulate the growth of phytoplankton in the marine environment is limited by the ability of oceanographers to measure nutrients and trace metals at relevant spatial and temporal scales. This project aims to develop a new generation of autonomous and highly sensitive nutrient and trace metal analyzers for shipboard use and deployment at coastal monitoring stations, with potential for incorporation into existing autonomous observing platforms (e.g., gliders, autonomous underwater vehicles). Such a development will generate new insights into nutrient dynamics at a range of spatial and temporal scales and provide a new capability to obtain high resolution data sets for nutrients and trace metals in remote areas and environments where sample volumes are limited (e.g., brines, pore waters).</p>
<p>This project will develop novel automated methods for nutrients (phosphate and silicate) and trace metals (aluminium, manganese) using a technology called programmable Flow Injection (pFI). pFI is a microfluidic technique, which allows to automate conventional wet chemical analysis using microliter volumes of sample and reagents while significantly reducing the generation waste. In order to bring low levels of trace metals and nutrients that characterize remote ocean regions into the analytical window of pFI, concentration techniques will also be developed and coupled to spectrophotometric and fluorescence detection. The developed methodologies will be intercalibrated with standard oceanographic methods by participating in a GO-SHIP research cruise and a Hawaii Ocean Time-series cruise of opportunity. The long-term, unattended operation of the pFI analyzers will be evaluated at the Central California Ocean Observing System (CenCOOS) Moss Landing Shore station, where autonomous pFI analyzers will be deployed to undertake a year-long, hourly time series of phosphate and silicate. The data obtained from the shore station will be made publicly available and will complement existing monitoring data from this location, illuminating the connection between deep ocean nutrient dynamics and biological activity in coastal upwelling systems. The newly developed pFI analyzers will be assembled using commercially available components and open source software to facilitate uptake of this new methodology by the chemical oceanography community at large. This project will also support the training and exchange of at least two graduate students at the University of Hawaii at Mānoa and the Moss Landing Marine Laboratories, who will represent the next generation of specialists in the development and application of pFI methodologies to chemical oceanography.</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>
pFI-SI-LOV
largerWorkCitation
project
eng; USA
oceans
Southern Ocean, South of Australia
142.390989
147.514878
-52.661337
-42.958642
2023-06-12
2023-06-17
0
BCO-DMO catalogue of parameters from Programmable Flow Injection (pFI) Silicate Underway Data from R/V Investigator IN2023_V04 in the Southern Ocean during June 2023 (pFI-SI-LOV 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/931814.rdf
Name: Time_UTC
Units: unitless
Description: <p>Sample date and time in UTC.</p>
http://lod.bco-dmo.org/id/dataset-parameter/931815.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Sample latitude in decimal degrees; a positive value indicates a Northern coordinate.</p>
http://lod.bco-dmo.org/id/dataset-parameter/931816.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Sample longitude in decimal degrees; a negative value indicates a Western coordinate.</p>
http://lod.bco-dmo.org/id/dataset-parameter/931817.rdf
Name: Mean_pFI_Si_OH_4_concentration
Units: umol/L
Description: <p>Mean silicate (pFI Si(OH)4) concentration from duplicate sample analysis.</p>
http://lod.bco-dmo.org/id/dataset-parameter/931818.rdf
Name: mean_pFI_flag
Units: unitless
Description: <p>Data quality flag for mean silicate value. 1 = good, 2 = bad, 3 = below limit of detection, 9 = not sampled.</p>
http://lod.bco-dmo.org/id/dataset-parameter/931819.rdf
Name: Depth
Units: meters (m)
Description: <p>Sample depth.</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
https://osprey.bco-dmo.org/dataset/931760/data/download
download
onLine
dataset
<p>Unfiltered seawater samples from the RV Investigator underway lab were aspirated using&nbsp;an auxiliary diaphragm pump (KNF, USA)&nbsp;into a 3 mL sample loop every 15-30 min during the deployment. The stored samples were immediately analyzed for silicate in duplicate using the pFI assay protocol outlined in Hatta et al. (2021). One key modification was adjusting the holding coils’ temperatures to 25ºC instead of the originally specified 50ºC.&nbsp;In tandem with this temperature change, the stop flow time in the flow cell was extended to 60 seconds to ensure the absorbance of the silicomolybdenum blue at 660 nm product reached a steady state.&nbsp;</p>
Specified by the Principal Investigator(s)
<p>The FloZF software returns a time stamped&nbsp;mean absorbance at 660 nm calculated from the last 10 seconds of the 60 sec stopped flow time in the pFI flow cell. Corresponding silicate concentrations were calculated using the slopes and intercepts of calibrations obtained every 12 hours during this deployment. All samples were measured in duplicate and the mean silicate concentration is reported here.&nbsp;</p>
<p><u>Quality flags represented in the primary data file</u></p>
<ul>
<li>1 = good</li>
<li>2 = bad&nbsp;</li>
<li>3 = below limit of detection</li>
<li>9 = not sampled</li>
</ul>
Specified by the Principal Investigator(s)
- "Depth" column added to primary data file; all samples were taken at 5 meters depth
- Time column converted from %m/%d/%y %H:%M format to %Y-%M-%DT%H:%DZ format
- Units removed from parameter names
- Special characters removed from parameter names
- Spaces in character names replaced with underscores ("_")
- Latitude and longitude values rounded to 6 degrees of precision
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
Cruise: IN2023_V04
IN2023_V04
R/V Investigator
Community Standard Description
International Council for the Exploration of the Sea
R/V Investigator
vessel
IN2023_V04
https://data.csiro.au/collection/csiro%3A59491v3
Report describing IN2023_V04
R/V Investigator
Community Standard Description
International Council for the Exploration of the Sea
R/V Investigator
vessel