http://lod.bco-dmo.org/id/dataset/770864
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
2019-06-18
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Underway pCO2 from the R/V Pelican cruise GOM_UW_1704 conducted in the Northern Gulf of Mexico in April 2017.
2019-07-01
publication
2019-07-01
revision
Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA)
2019-07-10
publication
https://doi.org/10.1575/1912/bco-dmo.770864.1
Wei-Jun Cai
University of Delaware
principalInvestigator
Katja Fennel
Dalhousie University
principalInvestigator
Nancy Rabalais
Louisiana State University
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: Cai, W., Rabalais, N., Fennel, K. (2019) Underway pCO2 from the R/V Pelican cruise GOM_UW_1704 conducted in the Northern Gulf of Mexico in April 2017. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2019-07-01 [if applicable, indicate subset used]. doi:10.1575/1912/bco-dmo.770864.1 [access date]
Underway pCO2 from nGOM cruise conducted in April 2017 Dataset Description: <p>Underway pCO2 from R/V Pelican cruise GOM_UW_1704 conducted in northern Gulf of Mexico in April 2017.</p> Methods and Sampling: Underway sea surface temperature, salinity, and pCO2 data were collected continuously along the cruise track. Surface seawater was collected from an intake on the port side of the ship at about 4m depth. SST and SSS were measured by an SBE45 (Sea-Bird Electronics) Thermosalino graph installed in the sea chest. Seawater was pumped to the ship's labs. There, underway pCO2 was measured inline by an automated system (Apollo Scitech) with a Li-7000 (LICOR, Inc.) non-dispersive infrared detector at a water flow rate of 3-4L/min; The sampling interval was 2 min. This autonomous system was twice daily against three certified CO2 gas standards (150.62, 404.72, and 992.54 ppm) obtained from NOAA's Earth System Research Laboratory (ESRL), Global Monitoring Division in Boulder, CO. These gas standards are directly traceable to the World Meteorological Organization (WMO) scale. The precision of underway pCO2 measurements of this system is 0.1 μatm, and the overall accuracy is estimated at 2 μatm, as documented by Pierrot et al. (2009). The underway system uses a shower head type equilibrator with ~0.5L headspace volume.
Instruments:
Underway pCO2 was measured inline by an automated system (Apollo Scitech) with a Li-7000 (LICOR, Inc.) non-dispersive infrared detector .
The pCO2 measurement was calibrated twice daily against 3 certified CO2 gas
standards (150.62, 404.72, and 992.54 ppm)
Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1559279 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1559279
completed
Wei-Jun Cai
University of Delaware
302-831-2839
School of Marine Science and Policy Office: 014 Lammot DuPont Laboratory
Newark
DE
19716
USA
wcai@udel.edu
pointOfContact
Katja Fennel
Dalhousie University
+1 (902) 494 4526
1355 Oxford Street
Halifax
Nova Scotia
B3H 4J1
Canada
Katja.Fennel@dal.ca
pointOfContact
Nancy Rabalais
Louisiana State University
9858512801
Room 3161, Energy, Coast and Environment Building
Baton Rouge
LA
70803
US
nrabalais@lumcon.edu
pointOfContact
asNeeded
Dataset Version: 1
Unknown
Region
Cruise
GPS_DateTime_UTC
Longitude
Latitude
Temperature
Salinity
pCO2
Flag_pCO2
a Li-7000 (LICOR, Inc.) non-dispersive infrared detector
SBE45 (Sea-Bird Electronics) Thermosalino graph
theme
None, User defined
region
cruise name
ISO_DateTime_UTC
longitude
latitude
temperature of sample or a generic measurement (not in-situ water temp)
salinity
Partial pressure of CO2
flag
featureType
BCO-DMO Standard Parameters
LI-COR LI-7000 Gas Analyzer
pCO2 Sensor
Sea-Bird SBE 45 MicroTSG Thermosalinograph
instrument
BCO-DMO Standard Instruments
PE17-18
service
Deployment Activity
Cocodrie, Louisiana
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: pH Dynamics and Interactive Effects of Multiple Processes in a River-Dominated Eutrophic Coastal Ocean
https://osprey.bco-dmo.org/project/751332
Collaborative Research: pH Dynamics and Interactive Effects of Multiple Processes in a River-Dominated Eutrophic Coastal Ocean
<p><strong>NSF Award Abstract:</strong></p>
<p>Ocean acidification (OA) refers to the lowering of ocean pH (or increasing acidity) due to uptake of atmospheric carbon dioxide (CO2). A great deal of research has been done to understand how the open ocean is influenced by OA, but coastal systems have received little attention. In the northern Gulf of Mexico (nGOM) shelf region, pH in bottom waters can measure up to 0.45 units less than the pH of the pre-industrial surface ocean, in comparison to the 0.1 overall pH decrease across the entire ocean. Carbonate chemistry in the ocean is greatly influenced by even small changes in pH, so these seemingly minor changes lead to much greater impacts on the biology and chemistry of the ocean. The researchers plan to study coastal OA in the nGOM, a region subject to high inputs of nutrients from the Mississippi River. These inputs of anthropogenic nitrogen mostly derived from fertilizers leads to increased respiration rates which decreases oxygen concentrations in the water column to the point of hypoxia in the summer. This study will inform us how OA in coastal waters subject to eutrophication and hypoxia will impact the chemistry and biology of the region. The researchers are dedicated to outreach programs in the Gulf and east coast regions, interacting with K-12 students and teachers, undergraduate/graduate student training, and various outreach efforts (family workshops on OA, lectures for the public and federal, state, and local representatives). Also, a project website will be created to disseminate the research results to a wider audience.</p>
<p>Increased uptakes of atmospheric carbon dioxide (CO2) by the ocean has led to a 0.1 unit decrease in seawater pH and carbonate mineral saturation state, a process known as Ocean Acidification (OA), which threatens the heath of marine organisms, alters marine ecosystems, and biogeochemical processes. Considerable attention has been focused on understanding the impact of OA on the open ocean but less attention has been given to coastal regions. Recent studies indicate that pH in bottom waters of the northern Gulf of Mexico (nGOM) shelf can be as much as 0.45 units lower relative to pre-industrial values. This occurs because the acidification resulting from increased CO2 inputs (both atmospheric inputs and in-situ respiration) decreases the buffering capacity of seawater. This interactive effect will increase with time, decreasing summertime nGOM bottom-water pH by an estimated 0.85 units and driving carbonate minerals to undersaturation by the end of this century. Researchers from the University of Delaware and the Louisiana Universities Marine Consortium will carry out a combined field, laboratory, and modeling program to address the following questions. (1) What are the physical, chemical, and biological controls on acidification in coastal waters impacted by the large, nutrient-laden Mississippi River?; (2) What is the link between coastal-water acidification, eutrophication, and hypoxia; (3) How do low pH and high CO2 concentrations in bottom waters affect CO2 out-gassing during fall and winter and storm periods when the water column is mixed?; and (4) What are the influences of changing river inputs under anthropogenic forcing on coastal water acidification? Results from this research aim to further our understanding of the processes influencing ocean acidification in coastal waters subject to eutrophication and hypoxia both in the GOM and river-dominated shelf ecosystems globally.</p>
<p><strong>Related Project note:</strong></p>
<p>There are overlapping cruises with the project "Sed Control on OA" <a href="https://www.bco-dmo.org/project/815333">https://www.bco-dmo.org/project/815333</a>. Thus, while some water column data can be found under this project "nGOMx acidification", all benthic data can be found under the "Sed Control on OA" project.</p>
nGOMx acidification
largerWorkCitation
project
eng; USA
oceans
Cocodrie, Louisiana
-93.4223
-88.7984
27.4902
29.6455
2017-04-06
2017-04-16
northern Gulf of Mexico, 27.5 N, 30 N, 88 W, 94 W
0
BCO-DMO catalogue of parameters from Underway pCO2 from the R/V Pelican cruise GOM_UW_1704 conducted in the Northern Gulf of Mexico in April 2017.
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/771688.rdf
Name: Region
Units: unitless
Description: <p>Study area: MisPlume (west), MisPlume (east), AtchCoast or AtchPlume</p>
http://lod.bco-dmo.org/id/dataset-parameter/771689.rdf
Name: Cruise
Units: unitless
Description: <p>Cruise name</p>
http://lod.bco-dmo.org/id/dataset-parameter/771690.rdf
Name: GPS_DateTime_UTC
Units: unitless
Description: <p>Date time in format yyyy-mm-ddTHH:MM:SS (UTC)</p>
http://lod.bco-dmo.org/id/dataset-parameter/771691.rdf
Name: Longitude
Units: decimal degrees
Description: <p>Longitude, west is negative</p>
http://lod.bco-dmo.org/id/dataset-parameter/771692.rdf
Name: Latitude
Units: decimal degrees
Description: <p>Latitude, south is negative</p>
http://lod.bco-dmo.org/id/dataset-parameter/771693.rdf
Name: Temperature
Units: degrees Celsius (°C)
Description: <p>Sea surface tempearture, measured with SBE45</p>
http://lod.bco-dmo.org/id/dataset-parameter/771694.rdf
Name: Salinity
Units: PSU
Description: <p>Sea surface salinity, measured with SBE45</p>
http://lod.bco-dmo.org/id/dataset-parameter/771695.rdf
Name: pCO2
Units: microatmosphere (uatm)
Description: <p>pCO2 at SST (+-2 uatm)</p>
http://lod.bco-dmo.org/id/dataset-parameter/772096.rdf
Name: Flag_pCO2
Units: unitless
Description: <p>Flag of pCO2 at SST. A flag indicated as 2 is good, it means the precision is less than +- 2 uatm</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
854491
https://darchive.mblwhoilibrary.org/bitstream/1912/24340/1/dataset-770864_underway-pco2__v1.tsv
download
https://doi.org/10.1575/1912/bco-dmo.770864.1
download
onLine
dataset
Underway sea surface temperature, salinity, and pCO2 data were collected continuously along the cruise track. Surface seawater was collected from an intake on the port side of the ship at about 4m depth. SST and SSS were measured by an SBE45 (Sea-Bird Electronics) Thermosalino graph installed in the sea chest. Seawater was pumped to the ship's labs. There, underway pCO2 was measured inline by an automated system (Apollo Scitech) with a Li-7000 (LICOR, Inc.) non-dispersive infrared detector at a water flow rate of 3-4L/min; The sampling interval was 2 min. This autonomous system was twice daily against three certified CO2 gas standards (150.62, 404.72, and 992.54 ppm) obtained from NOAA's Earth System Research Laboratory (ESRL), Global Monitoring Division in Boulder, CO. These gas standards are directly traceable to the World Meteorological Organization (WMO) scale. The precision of underway pCO2 measurements of this system is 0.1 μatm, and the overall accuracy is estimated at 2 μatm, as documented by Pierrot et al. (2009). The underway system uses a shower head type equilibrator with ~0.5L headspace volume.
Instruments:
Underway pCO2 was measured inline by an automated system (Apollo Scitech) with a Li-7000 (LICOR, Inc.) non-dispersive infrared detector .
The pCO2 measurement was calibrated twice daily against 3 certified CO2 gas
standards (150.62, 404.72, and 992.54 ppm)
Specified by the Principal Investigator(s)
1) Read the data into Excel.
2) Get the data log book and delete any questionable data such as those during instrument failure. Note: data during calibration should be cut and pasted into another worksheet.
3) Correct the CO2 data directly from Li-Cor using the calibration results. Specifically, first get the linear relationship between the known xCO2 from gas cylinders and the Li-Cor reading; then use the correlated equation to correct the raw xCO2 to calibrated xCO2.
4) Calculate the surface water pCO2 at the temperature of equilibration (it will be corrected to in-situ temperature later) [pCO2 (eq), units: μatm][Weiss and Price, 1980].
5) Calculate in-situ pCO2 [pCO2@SST, units: μatm] (Takahashi et al. 1993)
Data Manager processing notes:
- Converted longitude range from 0-360 to -180 - 180
- Added "Z" to end the datetime stamp to indicate it was in UTC time
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
a Li-7000 (LICOR, Inc.) non-dispersive infrared detector
a Li-7000 (LICOR, Inc.) non-dispersive infrared detector
PI Supplied Instrument Name: a Li-7000 (LICOR, Inc.) non-dispersive infrared detector PI Supplied Instrument Description:Underway pCO2 was measured inline by an automated system (Apollo Scitech) with a Li-7000 (LICOR, Inc.) non-dispersive infrared detector . Instrument Name: LI-COR LI-7000 Gas Analyzer Instrument Short Name:LI-COR LI-7000 Instrument Description: The LI-7000 gas analyzer is a differential, single source, non-dispersive, infrared gas analyzer. It has two solid state detectors, one each for CO2 and H2O, filters at 4.255 microns and 2.595 microns respectively. CO2 is measured in the range 0-3000ppm, with an accuracy of 1 percent nominally. H2O is measured in the range 0-60 mmol per mol, with an accuracy of one 1 percent. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/382/
PI Supplied Instrument Name: PI Supplied Instrument Description:Underway pCO2 was measured inline by an automated system (Apollo Scitech) with a Li-7000 (LICOR, Inc.) non-dispersive infrared detector . Instrument Name: pCO2 Sensor Instrument Short Name:pCO2 Sensor Instrument Description: A sensor that measures the partial pressure of CO2 in water (pCO2)
SBE45 (Sea-Bird Electronics) Thermosalino graph
SBE45 (Sea-Bird Electronics) Thermosalino graph
PI Supplied Instrument Name: SBE45 (Sea-Bird Electronics) Thermosalino graph 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: PE17-18
PE17-18
R/V Pelican
Community Standard Description
International Council for the Exploration of the Sea
R/V Pelican
vessel
PE17-18
Baoshan Chen
University of Delaware
R/V Pelican
Community Standard Description
International Council for the Exploration of the Sea
R/V Pelican
vessel