http://lod.bco-dmo.org/id/dataset/835227 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 2021-01-04 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Carbonate chemistry in Mission Aransas Estuary from May 2014 to Feb 2017 and Dec 2018 to Feb 2020 2021-01-04 publication 2021-01-04 revision Marine Biological Laboratory/Woods Hole Oceanographic Institution Library (MBLWHOI DLA) 2021-01-28 publication https://doi.org/10.26008/1912/bco-dmo.835227.1 Xinping Hu Texas A&M, Corpus Christi principalInvestigator Melissa R. McCutcheon Texas A&M, Corpus Christi 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: McCutcheon, M. R., Hu, X. (2021) Carbonate chemistry in Mission Aransas Estuary from May 2014 to Feb 2017 and Dec 2018 to Feb 2020. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2021-01-04 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.835227.1 [access date] Carbonate chemistry in Mission Aransas Estuary (2014-2017, 2018-2020) Dataset Description: Methods and Sampling: &lt;p&gt;Samples were collected every two weeks (March-October) or monthly (November-February) using Mission-Aransas National Estuarine Research Reserve Small Boat.&amp;nbsp; Water samples from both the surface (~0.5 meters) and the bottom of the water column (within 0.5 m from the sediment-water interface) were obtained using a Van Dorn water sampler.&amp;nbsp;&lt;/p&gt; Funding provided by NSF Division of Ocean Sciences (NSF OCE) Award Number: OCE-1654232 Award URL: https://www.nsf.gov/awardsearch/show-award?AWD_ID=1654232 completed Xinping Hu Texas A&M, Corpus Christi 361-825-3395 The University of Texas at Austin Department of Marine Science Austin TX USA xinping.hu@austin.utexas.edu pointOfContact Melissa R. McCutcheon Texas A&M, Corpus Christi (814) 657-4780 6300 Ocean Drive Unit 5860 Corpus Christi TX 78412 United States melissa.mccutcheon@tamucc.edu pointOfContact asNeeded Dataset Version: 1 Unknown ISO_Date Latitude Longitude Station Depth Temperature Salinity DIC TA Calcium pH pH_Label AS-C3 DIC analyzer, Apollo Scitech Inc Orion Star™ A12, Thermo Scientific YSI 6920 multisonde Orion® Ross™ glass electrode, Thermo Scientific Agilent 8453 UV-Vis spectrophotometer AS-Alk2 alkalinity titrator, Apollo SciTech Inc Metrohm Titrando 888, calcium ion-selective Titrode Van Dorn Beta™ Horizontal Bottle, Aquatic Biotechnology theme None, User defined date latitude longitude station depth temperature of sample or a generic measurement (not in-situ water temp) salinity from water bottle samples dissolved inorganic Carbon total alkalinity (TA) Calcium pH sampling_method featureType BCO-DMO Standard Parameters Apollo SciTech AS-C3 Dissolved Inorganic Carbon (DIC) analyzer Conductivity Meter Multi Parameter Portable Meter pH Sensor Spectrophotometer Titrator Titrator Van Dorn water sampler instrument BCO-DMO Standard Instruments 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. CAREER: The Impact of Hydrologic State on CO2 Flux and Acidification in Subtropical Estuaries http://hulab.tamucc.edu/research.htm CAREER: The Impact of Hydrologic State on CO2 Flux and Acidification in Subtropical Estuaries <p>NSF Award Abstract:</p> <p>This project is a CAREER award to Xinping Hu at Texas A&amp;M University-Corpus Christi. Hu proposes to integrate research and education in an investigation of carbon cycling and ocean acidification in the Mission-Aransas Estuary in South Texas. This coastal system is strongly affected by changes in river flow between seasons and from year to year. The relationship of changing river flows to carbon cycling in estuaries is not well understood. This lack of understanding in turn contributes to uncertainty in estimating global estuarine carbon budgets. In addition, climate change and other human activities heavily influence riverine input into estuaries and the coastal ocean, which then affect biogeochemistry and metabolism in these environments. Despite the need for this information, long-term records that can help to address the change in the strength and directions of CO2 fluxes in these ecosystems are very rare. Using high-intensity field sampling and analysis of historical data, this project aims to improve understanding of carbon cycling in this estuary and in the coastal ocean in general. The results obtained from this study will also provide key information about the biogeochemical response of estuaries to changing hydrologic conditions, as the southwestern U.S. grows drier with overall declining precipitation.</p> <p>The research objectives of this project include 1) investigating the relationship between hydrologic state and estuarine CO2 partial pressure (pCO2) in a case study of the Mission-Aransas Estuary, a subtropical semiarid estuary, 2) understanding the extent of CO2 flux and its hydrologic control in one of the world's largest lagoonal estuarine systems along the northwestern Gulf of Mexico, and 3) elucidating the mechanisms that lead to estuarine acidification and its feedback to CO2 fluxes. Intensive field campaigns for high-temporal resolution pCO2 and water carbonate chemistry sampling as well as sediment incubation will be carried out; analysis of multidecadal carbonate chemistry parameters that have been collected by Texas Commission on Environmental Quality will be used to obtain temporal trends of estuarine water pCO2 against the backdrop of increasing freshwater scarcity in this region. The education component of this CAREER award includes 1) creating an ocean and estuarine acidification research course and redesigning two existing courses for both undergraduate and graduate students, 2) collaborating with Foy Moody High School on their Aquatic Science education to engage high school students predominantly from underrepresented and economically challenged backgrounds in field and lab experiences. The ultimate educational goal is to encourage high school students to follow a STEM path for their college education, and undergraduate STEM students to pursue graduate degrees. This will be a part of the concerted effort to enhance diversity in the future workforce by increasing the number of underrepresented graduates with bachelor's or higher degrees in the STEM fields. This project will train one Ph.D. student. High school students and undergraduate interns from underrepresented and economically challenged backgrounds will also be supported to participate in summer research. Broader dissemination of the project findings will include undergraduate student presentations at symposiums organized by both TAMU-CC and the Texas A&amp;M University System, public seminars by both the graduate students and the principal investigator at various meetings organized by regional estuarine programs, presentations at national and international meetings, and publications in peer-reviewed journals.</p> CO2 Flux and Acidification in Subtropical Estuaries largerWorkCitation project eng; USA oceans -97.2008 -96.8283 27.83806 28.73833 2014-05-02 2020-02-25 Gulf of Mexico 0 BCO-DMO catalogue of parameters from Carbonate chemistry in Mission Aransas Estuary from May 2014 to Feb 2017 and Dec 2018 to Feb 2020 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/835357.rdf Name: ISO_Date Units: yyyy-mm-dd Description: <p>Sampling date in ISO date format</p> http://lod.bco-dmo.org/id/dataset-parameter/835358.rdf Name: Latitude Units: degrees North Description: <p>Latitude of sample collection, South is negative</p> http://lod.bco-dmo.org/id/dataset-parameter/835359.rdf Name: Longitude Units: degrees East Description: <p>Longitude of sample collection, West is negative</p> http://lod.bco-dmo.org/id/dataset-parameter/835360.rdf Name: Station Units: unitless Description: <p>Station name</p> http://lod.bco-dmo.org/id/dataset-parameter/835361.rdf Name: Depth Units: meters (m) Description: <p>Sample depth</p> http://lod.bco-dmo.org/id/dataset-parameter/835362.rdf Name: Temperature Units: degrees Celsius Description: <p>Water temperature</p> http://lod.bco-dmo.org/id/dataset-parameter/835363.rdf Name: Salinity Units: unitless Description: <p>Salinity</p> http://lod.bco-dmo.org/id/dataset-parameter/835364.rdf Name: DIC Units: micromoles per kilogram (umol/kg) Description: <p>Total dissolved inorganic carbon</p> http://lod.bco-dmo.org/id/dataset-parameter/835365.rdf Name: TA Units: micromoles per kilogram (umol/kg) Description: <p>Total titration alkalinity</p> http://lod.bco-dmo.org/id/dataset-parameter/835366.rdf Name: Calcium Units: millimoles per kilogram (mmol/kg) Description: <p>Calcium</p> http://lod.bco-dmo.org/id/dataset-parameter/835367.rdf Name: pH Units: unitless Description: <p>pH at 25 degrees Celsius</p> http://lod.bco-dmo.org/id/dataset-parameter/835368.rdf Name: pH_Label Units: unitless Description: <p>pH method (1=spectrophotometric, 4=potentiometric)</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 57724 https://darchive.mblwhoilibrary.org/bitstream/1912/26632/1/dataset-835227_carbonate-chemistry-2014-2017-and-2018-2020__v1.tsv download https://doi.org/10.26008/1912/bco-dmo.835227.1 download onLine dataset &lt;p&gt;Samples were collected every two weeks (March-October) or monthly (November-February) using Mission-Aransas National Estuarine Research Reserve Small Boat.&amp;nbsp; Water samples from both the surface (~0.5 meters) and the bottom of the water column (within 0.5 m from the sediment-water interface) were obtained using a Van Dorn water sampler.&amp;nbsp;&lt;/p&gt; Specified by the Principal Investigator(s) &lt;p&gt;Following the standard ocean acidification operating protocol, unfiltered water samples were collected in 250 mL borosilicate glass bottles for carbonate system characterization. 100 µL saturated mercuric chloride (HgCl2) was added into the sample&amp;nbsp;bottles and bottle stoppers were replaced after the application of Apiezon® L grease and secured with a rubber band and hose clamp. These preserved samples were used for salinity, total alkalinity (TA), total dissolved inorganic carbon (DIC), and pH analyses within two months of sample collection.&lt;/p&gt; &lt;p&gt;In-situ temperatures at both the surface&amp;nbsp;(~0.5 m) and the bottom of the water column (within 0.5 m from the sediment-water interface) were obtained using a calibrated YSI 6920 multisonde.&amp;nbsp;Salinity was measured using a benchtop salinometer (Orion Star™ A12, Thermo Scientific) which was calibrated using MilliQ and known salinity certified reference material (CRM). Total Alkalinity (TA) was analyzed at 22±0.1°C using Gran titration on an automated titration system (AS-Alk2, Apollo Scitech Inc.). DIC was analyzed using infrared detection on an AS-C3 DIC analyzer (Apollo Scitech Inc.). Certified reference material was used to ensure the quality of the analysis and optimal performance of the instruments. Total scale pH for salinity ≥20 samples was measured on a spectrophotometer at 25°C using purified m-cresol purple. The equation in Liu et al. (2011) was used in the calculation of pH values. For low salinity waters (&amp;lt;20) prior to September 28th, 2017, a potentiometric method was used to measure pH. An Orion® Ross™ high precision glass electrode was used and three pH standards (4.01, 7.00, and 10.01) were used to calibrate the electrode. Beginning September 28th, 2017, the low salinity samples were also run on the spectrophotometer, and the Douglas and Byrne (2017) equation was used to calculate pH on total scale.&amp;nbsp; Calcium concentration ([Ca2+]) was measured (from non-preserved water samples) using an automatic titration with an ethylene glycol tetraacetic acid (EGTA) titrant on a Metrohm Titrando. The end-point was detected using a Metrohm calcium ion-selective electrode.&lt;/p&gt; 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 AS-C3 DIC analyzer, Apollo Scitech Inc AS-C3 DIC analyzer, Apollo Scitech Inc PI Supplied Instrument Name: AS-C3 DIC analyzer, Apollo Scitech Inc Instrument Name: Apollo SciTech AS-C3 Dissolved Inorganic Carbon (DIC) analyzer Instrument Short Name:Apollo SciTech AS-C3 Instrument Description: A Dissolved Inorganic Carbon (DIC) analyzer, for use in aquatic carbon dioxide parameter analysis of coastal waters, sediment pore-waters, and time-series incubation samples. The analyzer consists of a solid state infrared CO2 detector, a mass-flow controller, and a digital pump for transferring accurate amounts of reagent and sample. The analyzer uses an electronic cooling system to keep the reactor temperature below 3 degrees Celsius, and a Nafion dry tube to reduce the water vapour and keep the analyzer drift-free and maintenance-free for longer. The analyzer can handle sample volumes from 0.1 - 1.5 milliliters, however the best results are obtained from sample volumes between 0.5 - 1 milliliters. It takes approximately 3 minutes per analysis, and measurement precision is plus or minus 2 micromoles per kilogram or higher for surface seawater. It is designed for both land based and shipboard laboratory use. Orion Star™ A12, Thermo Scientific Orion Star™ A12, Thermo Scientific PI Supplied Instrument Name: Orion Star™ A12, Thermo Scientific PI Supplied Instrument Description:Orion Star™ A12, Thermo Scientific Instrument Name: Conductivity Meter Instrument Short Name:Conductivity Meter Instrument Description: Conductivity Meter - An electrical conductivity meter (EC meter) measures the electrical conductivity in a solution. Commonly used in hydroponics, aquaculture and freshwater systems to monitor the amount of nutrients, salts or impurities in the water. YSI 6920 multisonde YSI 6920 multisonde PI Supplied Instrument Name: YSI 6920 multisonde PI Supplied Instrument Description:YSI 6920 multisonde is a multiparameter water quality instrument for real-time or long-term monitoring and profiling of temperature, conductivity, pH, oxidation-reduction potential, dissolved oxygen, and turbidity.  Instrument Name: Multi Parameter Portable Meter Instrument Short Name: Instrument Description: An analytical instrument that can measure multiple parameters, such as pH, EC, TDS, DO and temperature with one device and is portable or hand-held. Orion® Ross™ glass electrode, Thermo Scientific Orion® Ross™ glass electrode, Thermo Scientific PI Supplied Instrument Name: Orion® Ross™ glass electrode, Thermo Scientific PI Supplied Instrument Description:Orion® Ross™ glass electrode, Thermo Scientific Instrument Name: pH Sensor Instrument Short Name:pH Sensor Instrument Description: An instrument that measures the hydrogen ion activity in solutions. The overall concentration of hydrogen ions is inversely related to its pH.  The pH scale ranges from 0 to 14 and indicates whether acidic (more H+) or basic (less H+).  Agilent 8453 UV-Vis spectrophotometer Agilent 8453 UV-Vis spectrophotometer PI Supplied Instrument Name: Agilent 8453 UV-Vis spectrophotometer Instrument Name: Spectrophotometer Instrument Short Name:Spectrophotometer Instrument Description: An instrument used to measure the relative absorption of electromagnetic radiation of different wavelengths in the near infra-red, visible and ultraviolet wavebands by samples. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB20/ AS-Alk2 alkalinity titrator, Apollo SciTech Inc AS-Alk2 alkalinity titrator, Apollo SciTech Inc PI Supplied Instrument Name: AS-Alk2 alkalinity titrator, Apollo SciTech Inc Instrument Name: Titrator Instrument Short Name:Titrator Instrument Description: Titrators are instruments that incrementally add quantified aliquots of a reagent to a sample until the end-point of a chemical reaction is reached. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB12/ Metrohm Titrando 888, calcium ion-selective Titrode Metrohm Titrando 888, calcium ion-selective Titrode PI Supplied Instrument Name: Metrohm Titrando 888, calcium ion-selective Titrode Instrument Name: Titrator Instrument Short Name:Titrator Instrument Description: Titrators are instruments that incrementally add quantified aliquots of a reagent to a sample until the end-point of a chemical reaction is reached. Community Standard Description: http://vocab.nerc.ac.uk/collection/L05/current/LAB12/ Van Dorn Beta™ Horizontal Bottle, Aquatic Biotechnology Van Dorn Beta™ Horizontal Bottle, Aquatic Biotechnology PI Supplied Instrument Name: Van Dorn Beta™ Horizontal Bottle, Aquatic Biotechnology Instrument Name: Van Dorn water sampler Instrument Short Name: Instrument Description: A free-flushing water sample bottle comprising a cylinder (polycarbonate, acrylic or PVC) with a stopper at each end. The bottle is closed by means of a messenger from the surface releasing the tension on a latex band and thus pulling the two stoppers firmly into place. A thermometer can be mounted inside the bottle. One or more bottles can be lowered on a line to allow sampling at a single or multiple depth levels. Van Dorn samplers are suitable for for physical (temperature), chemical and biological sampling in shallow to very deep water. Bottles are typically lowered vertically through the water column although a horizontal version is available for sampling near the seabed or at thermoclines or chemoclines. Because of the lack of metal parts the bottles are suitable for trace metal sampling, although the blue polyurethane seal used in the Alpha version may leach mercury. The Beta version uses white ASA plastic seals that do not leach mercury but are less durable.