BCO-DMO ERDDAP
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Row Type Variable Name Attribute Name Data Type Value
attribute NC_GLOBAL access_formats String .htmlTable,.csv,.json,.mat,.nc,.tsv,.esriCsv,.geoJson,.odvTxt
attribute NC_GLOBAL acquisition_description String Underway sea surface temperature, salinity, and pCO2 data were collected\ncontinuously along the cruise track. Surface seawater was collected from an\nintake on the port side of the ship at about 4m depth. SST and SSS were\nmeasured by an SBE45 (Sea-Bird Electronics) Thermosalino graph installed in\nthe sea chest. Seawater was pumped to the ship's labs. There, underway pCO2\nwas measured inline by an automated system (Apollo Scitech) with a Li-7000\n(LICOR, Inc.) non-dispersive infrared detector at a water flow rate of\n3-4L/min; The sampling interval was 2 min. This autonomous system was twice\ndaily against three certified CO2 gas standards (150.62, 404.72, and 992.54\nppm) obtained from NOAA's Earth System Research Laboratory (ESRL), Global\nMonitoring Division in Boulder, CO. These gas standards are directly traceable\nto the World Meteorological Organization (WMO) scale. The precision of\nunderway pCO2 measurements of this system is 0.1 \\u03bcatm, and the overall\naccuracy is estimated at 2 \\u03bcatm, as documented by Pierrot et al. (2009).\nThe underway system uses a shower head type equilibrator with ~0.5L headspace\nvolume.\n \nInstruments:  \n Underway pCO2 was measured inline by an automated system (Apollo Scitech)\nwith a Li-7000 (LICOR, Inc.) non-dispersive infrared detector .\n \nThe pCO2 measurement was calibrated twice daily against 3 certified CO2 gas  \n standards (150.62, 404.72, and 992.54 ppm)
attribute NC_GLOBAL awards_0_award_nid String 751331
attribute NC_GLOBAL awards_0_award_number String OCE-1559279
attribute NC_GLOBAL awards_0_data_url String http://www.nsf.gov/awardsearch/showAward.do?AwardNumber=1559279 (external link)
attribute NC_GLOBAL awards_0_funder_name String NSF Division of Ocean Sciences
attribute NC_GLOBAL awards_0_funding_acronym String NSF OCE
attribute NC_GLOBAL awards_0_funding_source_nid String 355
attribute NC_GLOBAL awards_0_program_manager String Henrietta N Edmonds
attribute NC_GLOBAL awards_0_program_manager_nid String 51517
attribute NC_GLOBAL cdm_data_type String Other
attribute NC_GLOBAL comment String underway pCO2 \n  PI: Wei-Jun Cai \n  data version: 1 (2019-07-01)
attribute NC_GLOBAL Conventions String COARDS, CF-1.6, ACDD-1.3
attribute NC_GLOBAL creator_email String info at bco-dmo.org
attribute NC_GLOBAL creator_name String BCO-DMO
attribute NC_GLOBAL creator_type String institution
attribute NC_GLOBAL creator_url String https://www.bco-dmo.org/ (external link)
attribute NC_GLOBAL data_source String extract_data_as_tsv version 2.3  19 Dec 2019
attribute NC_GLOBAL date_created String 2019-06-18T20:26:55Z
attribute NC_GLOBAL date_modified String 2019-07-10T20:09:46Z
attribute NC_GLOBAL defaultDataQuery String &time<now
attribute NC_GLOBAL doi String 10.1575/1912/bco-dmo.770864.1
attribute NC_GLOBAL Easternmost_Easting double -88.7984
attribute NC_GLOBAL geospatial_lat_max double 29.6455
attribute NC_GLOBAL geospatial_lat_min double 27.4902
attribute NC_GLOBAL geospatial_lat_units String degrees_north
attribute NC_GLOBAL geospatial_lon_max double -88.7984
attribute NC_GLOBAL geospatial_lon_min double -93.4223
attribute NC_GLOBAL geospatial_lon_units String degrees_east
attribute NC_GLOBAL infoUrl String https://www.bco-dmo.org/dataset/770864 (external link)
attribute NC_GLOBAL institution String BCO-DMO
attribute NC_GLOBAL instruments_0_acronym String LI-COR LI-7000
attribute NC_GLOBAL instruments_0_dataset_instrument_description String Underway pCO2 was measured inline by an automated system (Apollo Scitech) with a Li-7000 (LICOR, Inc.) non-dispersive infrared detector .
attribute NC_GLOBAL instruments_0_dataset_instrument_nid String 770878
attribute NC_GLOBAL instruments_0_description String The LI-7000 CO2/H2O Gas Analyzer is a high performance, dual cell, differential gas analyzer.  It was designed to expand on the capabilities of the LI-6262 CO2/ H2O Gas Analyzer.  A dichroic beam splitter at the end of the optical path provides radiation to two separate detectors, one filtered to detect radiation absorption of CO2 and the other to detect absorption by H2O.  The two separate detectors measure infrared absorption by CO2 and H2O in the same gas stream.  The LI-7000 CO2/ H2O Gas Analyzer is a differential analyzer, in which a known concentration (which can be zero) gas is put in the reference cell, and an unknown gas is put in the sample cell.
attribute NC_GLOBAL instruments_0_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L05/current/382/ (external link)
attribute NC_GLOBAL instruments_0_instrument_name String LI-COR LI-7000 Gas Analyzer
attribute NC_GLOBAL instruments_0_instrument_nid String 577
attribute NC_GLOBAL instruments_0_supplied_name String a Li-7000 (LICOR, Inc.) non-dispersive infrared detector
attribute NC_GLOBAL instruments_1_acronym String pCO2 Sensor
attribute NC_GLOBAL instruments_1_dataset_instrument_description String Underway pCO2 was measured inline by an automated system (Apollo Scitech) with a Li-7000 (LICOR, Inc.) non-dispersive infrared detector .
attribute NC_GLOBAL instruments_1_dataset_instrument_nid String 770877
attribute NC_GLOBAL instruments_1_description String A sensor that measures the partial pressure of CO2 in water (pCO2)
attribute NC_GLOBAL instruments_1_instrument_name String pCO2 Sensor
attribute NC_GLOBAL instruments_1_instrument_nid String 676
attribute NC_GLOBAL instruments_2_acronym String SBE 45 MicroTSG
attribute NC_GLOBAL instruments_2_dataset_instrument_nid String 770876
attribute NC_GLOBAL instruments_2_description String 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.\n\nSea Bird SBE 45 MicroTSG (Thermosalinograph)
attribute NC_GLOBAL instruments_2_instrument_external_identifier String https://vocab.nerc.ac.uk/collection/L22/current/TOOL0190/ (external link)
attribute NC_GLOBAL instruments_2_instrument_name String Sea-Bird SBE 45 MicroTSG Thermosalinograph
attribute NC_GLOBAL instruments_2_instrument_nid String 528063
attribute NC_GLOBAL instruments_2_supplied_name String SBE45 (Sea-Bird Electronics) Thermosalino graph
attribute NC_GLOBAL keywords String bco, bco-dmo, biological, carbon, carbon dioxide, chemical, co2, cruise, data, dataset, date, density, dioxide, dmo, earth, Earth Science > Oceans > Salinity/Density > Salinity, erddap, flag, Flag_pCO2, global, gps, latitude, longitude, management, ocean, oceanography, oceans, office, pCO2, positioning, practical, preliminary, region, salinity, science, sea, sea_water_practical_salinity, seawater, system, temperature, time, water
attribute NC_GLOBAL keywords_vocabulary String GCMD Science Keywords
attribute NC_GLOBAL license String https://www.bco-dmo.org/dataset/770864/license (external link)
attribute NC_GLOBAL metadata_source String https://www.bco-dmo.org/api/dataset/770864 (external link)
attribute NC_GLOBAL Northernmost_Northing double 29.6455
attribute NC_GLOBAL param_mapping String {'770864': {'Latitude': 'flag - latitude', 'GPS_DateTime_UTC': 'flag - time', 'Longitude': 'flag - longitude'}}
attribute NC_GLOBAL parameter_source String https://www.bco-dmo.org/mapserver/dataset/770864/parameters (external link)
attribute NC_GLOBAL people_0_affiliation String University of Delaware
attribute NC_GLOBAL people_0_person_name String Wei-Jun Cai
attribute NC_GLOBAL people_0_person_nid String 528011
attribute NC_GLOBAL people_0_role String Principal Investigator
attribute NC_GLOBAL people_0_role_type String originator
attribute NC_GLOBAL people_1_affiliation String Dalhousie University
attribute NC_GLOBAL people_1_person_name String Katja Fennel
attribute NC_GLOBAL people_1_person_nid String 50705
attribute NC_GLOBAL people_1_role String Co-Principal Investigator
attribute NC_GLOBAL people_1_role_type String originator
attribute NC_GLOBAL people_2_affiliation String Louisiana State University
attribute NC_GLOBAL people_2_affiliation_acronym String LSU
attribute NC_GLOBAL people_2_person_name String Nancy Rabalais
attribute NC_GLOBAL people_2_person_nid String 751342
attribute NC_GLOBAL people_2_role String Co-Principal Investigator
attribute NC_GLOBAL people_2_role_type String originator
attribute NC_GLOBAL people_3_affiliation String Woods Hole Oceanographic Institution
attribute NC_GLOBAL people_3_affiliation_acronym String WHOI BCO-DMO
attribute NC_GLOBAL people_3_person_name String Karen Soenen
attribute NC_GLOBAL people_3_person_nid String 748773
attribute NC_GLOBAL people_3_role String BCO-DMO Data Manager
attribute NC_GLOBAL people_3_role_type String related
attribute NC_GLOBAL project String nGOMx acidification
attribute NC_GLOBAL projects_0_acronym String nGOMx acidification
attribute NC_GLOBAL projects_0_description String NSF Award Abstract:\nOcean 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.\nIncreased 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.
attribute NC_GLOBAL projects_0_end_date String 2019-04
attribute NC_GLOBAL projects_0_geolocation String northern Gulf of Mexico, 27.5 N, 30 N, 88 W, 94 W
attribute NC_GLOBAL projects_0_name String Collaborative Research: pH Dynamics and Interactive Effects of Multiple Processes in a River-Dominated Eutrophic Coastal Ocean
attribute NC_GLOBAL projects_0_project_nid String 751332
attribute NC_GLOBAL projects_0_start_date String 2016-05
attribute NC_GLOBAL publisher_name String Biological and Chemical Oceanographic Data Management Office (BCO-DMO)
attribute NC_GLOBAL publisher_type String institution
attribute NC_GLOBAL sourceUrl String (local files)
attribute NC_GLOBAL Southernmost_Northing double 27.4902
attribute NC_GLOBAL standard_name_vocabulary String CF Standard Name Table v55
attribute NC_GLOBAL subsetVariables String Cruise,Flag_pCO2
attribute NC_GLOBAL summary String Underway pCO2 from R/V Pelican cruise conducted in the northern Gulf of Mexico (27.5 N, 30 N, 88 W, 94 W) from April 5th to 16th in 2017. The precision of pCO2 is \\u00b12 \\u00b5atm.
attribute NC_GLOBAL time_coverage_end String 2017-04-16T20:54:39Z
attribute NC_GLOBAL time_coverage_start String 2017-04-06T13:07:17Z
attribute NC_GLOBAL title String [Underway pCO2] - Underway pCO2 from the R/V Pelican cruise GOM_UW_1704 conducted in the Northern Gulf of Mexico in April 2017. (Collaborative Research: pH Dynamics and Interactive Effects of Multiple Processes in a River-Dominated Eutrophic Coastal Ocean)
attribute NC_GLOBAL version String 1
attribute NC_GLOBAL Westernmost_Easting double -93.4223
attribute NC_GLOBAL xml_source String osprey2erddap.update_xml() v1.3
variable Region String
attribute Region bcodmo_name String region
attribute Region description String Study area: MisPlume (west), MisPlume (east), AtchCoast or AtchPlume
attribute Region long_name String Region
attribute Region units String unitless
variable Cruise String
attribute Cruise bcodmo_name String Cruise Name
attribute Cruise description String Cruise name
attribute Cruise long_name String Cruise
attribute Cruise units String unitless
variable time double
attribute time _CoordinateAxisType String Time
attribute time actual_range double 1.491484037E9, 1.492376079E9
attribute time axis String T
attribute time bcodmo_name String ISO_DateTime_UTC
attribute time description String Date time in format yyyy-mm-ddTHH:MM:SS (UTC)
attribute time ioos_category String Time
attribute time long_name String GPS Date Time UTC
attribute time nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/DTUT8601/ (external link)
attribute time source_name String GPS_DateTime_UTC
attribute time standard_name String time
attribute time time_origin String 01-JAN-1970 00:00:00
attribute time time_precision String 1970-01-01T00:00:00Z
attribute time units String seconds since 1970-01-01T00:00:00Z
variable longitude double
attribute longitude _CoordinateAxisType String Lon
attribute longitude _FillValue double NaN
attribute longitude actual_range double -93.4223, -88.7984
attribute longitude axis String X
attribute longitude bcodmo_name String longitude
attribute longitude colorBarMaximum double 180.0
attribute longitude colorBarMinimum double -180.0
attribute longitude description String Longitude, west is negative
attribute longitude ioos_category String Location
attribute longitude long_name String Longitude
attribute longitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LONX/ (external link)
attribute longitude standard_name String longitude
attribute longitude units String degrees_east
variable latitude double
attribute latitude _CoordinateAxisType String Lat
attribute latitude _FillValue double NaN
attribute latitude actual_range double 27.4902, 29.6455
attribute latitude axis String Y
attribute latitude bcodmo_name String latitude
attribute latitude colorBarMaximum double 90.0
attribute latitude colorBarMinimum double -90.0
attribute latitude description String Latitude, south is negative
attribute latitude ioos_category String Location
attribute latitude long_name String Latitude
attribute latitude nerc_identifier String https://vocab.nerc.ac.uk/collection/P09/current/LATX/ (external link)
attribute latitude standard_name String latitude
attribute latitude units String degrees_north
variable Temperature float
attribute Temperature _FillValue float NaN
attribute Temperature actual_range float 17.2791, 24.9401
attribute Temperature bcodmo_name String temperature
attribute Temperature description String Sea surface tempearture, measured with SBE45
attribute Temperature long_name String Temperature
attribute Temperature units String degrees Celsius (°C)
variable Salinity float
attribute Salinity _FillValue float NaN
attribute Salinity actual_range float 0.208, 36.4
attribute Salinity bcodmo_name String sal
attribute Salinity colorBarMaximum double 37.0
attribute Salinity colorBarMinimum double 32.0
attribute Salinity description String Sea surface salinity, measured with SBE45
attribute Salinity long_name String Sea Water Practical Salinity
attribute Salinity nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/PSALST01/ (external link)
attribute Salinity units String PSU
variable pCO2 double
attribute pCO2 _FillValue double NaN
attribute pCO2 actual_range double 113.9379116, 1802.951313
attribute pCO2 bcodmo_name String pCO2
attribute pCO2 description String pCO2 at SST (+-2 uatm)
attribute pCO2 long_name String P CO2
attribute pCO2 nerc_identifier String https://vocab.nerc.ac.uk/collection/P01/current/PCO2C101/ (external link)
attribute pCO2 units String microatmosphere (uatm)
variable Flag_pCO2 byte
attribute Flag_pCO2 _FillValue byte 127
attribute Flag_pCO2 actual_range byte 2, 2
attribute Flag_pCO2 bcodmo_name String flag
attribute Flag_pCO2 colorBarMaximum double 150.0
attribute Flag_pCO2 colorBarMinimum double 0.0
attribute Flag_pCO2 description String Flag of pCO2 at SST. A flag indicated as 2 is good, it means the precision is less than +- 2 uatm
attribute Flag_pCO2 long_name String Flag P CO2
attribute Flag_pCO2 units String unitless

 
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