Identification_Information: Citation: Citation_Information: Originator: Lisa L. Robbins Originator: Carl A. Taylor Originator: Kendra L. Daly Originator: Paul O. Knorr Publication_Date: 20120101 Title: Autonomous Flow-Thru (AFT) CO2 data of the West Florida Shelf: USGS Cruise 11BHM01 Geospatial_Data_Presentation_Form: vector digital data Series_Information: Series_Name: Data Series Issue_Identification: 712 Publication_Information: Publication_Place: St. Petersburg, FL Publisher: U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center Online_Linkage: http://pubs.usgs.gov/ds/712/ Description: Abstract: The United States Geological Survey (USGS) is conducting a study on the effects of climate change on ocean acidification within the Gulf of Mexico; dealing specifically with the effect of ocean acidification on marine organisms and habitats. To investigate this, the USGS participated in cruises in the West Florida Shelf and northern Gulf of Mexico regions aboard the R/V Weatherbird II, a ship of opportunity lead by Dr. Kendra Daly, of the University of South Florida (USF). This cruise occurred May 03 - 09, 2011, leaving from and returned to Saint Petersburg, Florida. The USGS collected data pertaining to pH, dissolved inorganic carbon (DIC), and total alkalinity in discrete samples. Thirty-four underway discrete samples were collected approximately hourly over a span of 1632 kilometer (km) track line, additionally 44 discrete samples were taken at four stations, these were taken at various depths. Flow-through conductivity-temperature-depth (CTD) data were collected, which includes temperature, salinity, and pH. Corroborating the USGS data are the vertical CTD profiles collected by USF, using the following sensors: CTD, oxygen, chlorophyll fluorescence, optical backscatter, and transmissometer. Additionally, discrete depth samples for nutrients, chlorophyll, and particulate organic carbon/nitrogen were collected. Purpose: The purpose is to study the effects of climate change on ocean acidification within the Gulf of Mexico. Supplemental_Information: The USGS Saint Petersburg Coastal and Marine Science Center (SPCMSC) - St. Petersburg, FL, assigns a unique identifier to each cruise or field activity. For example, 11BHM01 tells us the data were collected in 2011 for Benthic Habitat Mapping and the data were collected during the first field activity for that project in that calendar year. Refer to http://walrus.wr.usgs.gov/infobank/programs/html/definition/activity.html for a detailed description of the method used to assign the cruise ID. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2011 Currentness_Reference: data collection Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -87.89468 East_Bounding_Coordinate: -82.82817 North_Bounding_Coordinate: 30.00147 South_Bounding_Coordinate: 27.60952 Keywords: Theme: Theme_Keyword_Thesaurus: Ocean Chemistry Theme_Keyword: pH Theme_Keyword: total carbon Theme_Keyword: Salinity Theme_Keyword: carbon flux Theme_Keyword: Ocean Acidification Theme_Keyword: pCO2 Theme_Keyword: Temperature Place: Place_Keyword_Thesaurus: Region Place_Keyword: West Florida Shelf Place_Keyword: Florida Place_Keyword: United States Stratum: Stratum_Keyword_Thesaurus: None Stratum_Keyword: Mesopelagic Stratum_Keyword: Epipelagic Stratum_Keyword: ocean surface Stratum_Keyword: Bathypelagic Temporal: Temporal_Keyword_Thesaurus: None Temporal_Keyword: 2011 May Access_Constraints: None Use_Constraints: USGS and USF requests to be acknowledged as originator of the data in future products or derivative research. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: United States Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Lisa Robbins Contact_Position: Research Oceanographer Contact_Address: Address_Type: Unknown Address: 600 4th Street South City: St. Petersburg State_or_Province: Florida Postal_Code: 33701 Country: USA Contact_Voice_Telephone: 727-502-8005 Contact_Facsimile_Telephone: 727-502-8181 Hours_of_Service: 8am to 5pm M-F EST Native_Data_Set_Environment: Microsoft Windows Server 2008 R2 Version 6.1 (Build 7600) ; ESRI ArcGIS 10.0.2.3200 ; Microsoft Excel Data_Quality_Information: Logical_Consistency_Report: The QA/QC process looked for internal consistencies in the data by calculating the results using CO2SYS and back checking with the collected data. Completeness_Report: These data are collected along tracklines (2-D) and therefore inherently incomplete geologic details between lines must be inferred. Lineage: Process_Step: Process_Description: Flow-through data was collected using a Sunburst AFT pH, which measures pH on the total hydrogen ion scale, was attached to the flow-through system. This system sampled the seawater approximately every three minutes and has a precision and accuracy of 0.001 and ±0.003, respectively. The Sunburst AFT-CO2 system was used to measure the partial pressure of CO2 in water (pCO2) and was attached to the shipboard flow-through system. The instrument sampled approximately every five minutes and had a precision and accuracy of about 1 ppm and ± 3 ppm, respectively. Process_Date: 20110503 Process_Step: Process_Description: Data entered into a spreadsheet and merged with other data sources: GPS from the ship, as well as the lab results of total alkalinity and disolved inorganic carbon from the USGS St. Petersburg Carbon Analytical Laboratory. Process_Date: 20120816 Source_Produced_Citation_Abbreviation: 2011_May_AFT_CO2.csv Source_Produced_Citation_Abbreviation: 2011_May_AFT_CO2.xls Process_Step: Process_Description: The spreadsheet was imported into ArcGIS 10 and converted into a shapefile. Source_Used_Citation_Abbreviation: 2011_May_AFT_CO2.xls Process_Date: 20120816 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: Entity point Point_and_Vector_Object_Count: 191 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 8.9831528411952133e-009 Longitude_Resolution: 8.9831528411952133e-009 Geographic_Coordinate_Units: Decimal degrees Geodetic_Model: Horizontal_Datum_Name: D WGS 1984 Ellipsoid_Name: WGS 1984 Semi-major_Axis: 6378137.0 Denominator_of_Flattening_Ratio: 298.257223563 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: West Florida Shelf Autonomous flow-thru (AFT) data Entity_Type_Definition: Autonomous Flow Through (AFT) systems continuous measurements of chemical and physical parameters of seawater Entity_Type_Definition_Source: USGS Attribute: Attribute_Label: FID Attribute_Definition: Internal feature number. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated. Attribute: Attribute_Label: Shape* Attribute_Definition: Feature geometry. Attribute_Definition_Source: ESRI Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: Cruise_ID Attribute_Definition: Cruise name according to the USGS Field Activity Collection Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Coordinates defining the features. Attribute: Attribute_Label: Date_UTC Attribute_Definition: Date in UTC time zone; MM/DD/YYYY Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Date of sample collection in MM/DD/YYYY format Beginning_Date_of_Attribute_Values: 20110503 Ending_Date_of_Attribute_Values: 20110509 Attribute: Attribute_Label: Time_UTC Attribute_Definition: Time of data collection in HH:MM UTC, 24 hour format Attribute_Definition_Source: USGS Attribute_Domain_Values: Unrepresentable_Domain: Time of data collection in HH:MM UTC Attribute: Attribute_Label: Date_EDT Attribute_Definition: Date in EDT time zone; MM/DD/YYYY Attribute_Definition_Source: user Attribute_Domain_Values: Unrepresentable_Domain: Date of sample collection in MM/DD/YYYY format Beginning_Date_of_Attribute_Values: 20110503 Ending_Date_of_Attribute_Values: 20110509 Attribute: Attribute_Label: Time_EDT Attribute_Definition: Time of data collection in HH:MM EDT, 24 hour format Attribute_Definition_Source: user Attribute_Domain_Values: Unrepresentable_Domain: Time of data collection in HH:MM EDT Attribute: Attribute_Label: Latitude Attribute_Definition: Latitude in decimal degrees Attribute_Definition_Source: WGS 1984 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 27.60638 Range_Domain_Maximum: 30.06772 Attribute: Attribute_Label: Longitude Attribute_Definition: Longitude in decimal degrees Attribute_Definition_Source: WGS 1984 Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: -87.9014 Range_Domain_Maximum: -82.66093 Attribute: Attribute_Label: CO2 Attribute_Definition: a measure of CO2 of a solution Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 7.4616 Range_Domain_Maximum: 9.1623 Attribute: Attribute_Label: Temp_C Attribute_Definition: water temperature Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 22.89 Range_Domain_Maximum: 26.48 Attribute: Attribute_Label: Ship_Sal_P Attribute_Definition: Salinity Attribute_Definition_Source: USGS Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 30.45 Range_Domain_Maximum: 36.66 Overview_Description: Entity_and_Attribute_Overview: All attributes are common between the three data formats provided (.csv, .xls, .shp), except for the attributes FID and SHAPE (indicated by *), which are found only within the shapefile (.shp) because they are unique to that data type. Additionally, the GPS data was taken from the Weatherbird II's navigation logs and was matched with the time logs on the sonde. These data have not been QA/QC yet, and as such could have data errors due to tubes clogging, or flowthrough shutdown for inclement weather. Entity_and_Attribute_Detail_Citation: Robbins, L.L., Knorr, P.O., Taylor, C.A., Daly, K.L., 2012, USGS Field Activities 11BHM01 and 11BHM02 on the West Florida Shelf, Gulf of Mexico, in May and June 2011: U.S. Geological Survey Data Series 712, available online at http://pubs.usgs.gov/ds/712/. Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Lisa Robbins Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: Florida Postal_Code: 33701 Country: US Contact_Voice_Telephone: 727-502-8005 Distribution_Liability: This digital publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, make any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. Any views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof. Although all data published in this report have been used by the USGS, no warranty, expressed or implied, is made by the U.S. Geological Survey as to the accuracy of the data and related materials and/or the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of this data, software, or related materials. Graphical map depictions are intended to be used within the map scale limits applicable to the source data. Although software enables the user to view data at various scales, the user is cautioned to refer to the source documentation for the appropriate map scale limitations. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: Microsoft Excel (.xls); Comma-delimited text file (.csv); ArcGIS (.SHP) File_Decompression_Technique: Microsoft Excel (.xls); Comma-delimited text file (.csv); ArcGIS (.SHP) Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/ds/712/ Fees: Free Metadata_Reference_Information: Metadata_Date: 20130610 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: United States Geological Survey St. Petersburg Coastal and Marine Science Center Contact_Person: Kira E. Barrera Contact_Position: Research Assistant Contact_Address: Address_Type: mailing and physical address Address: 600 4th Street South City: St. Petersburg State_or_Province: Florida Postal_Code: 33701 Country: US Contact_Voice_Telephone: 727-502-8044 Contact_Facsimile_Telephone: 727-502-8181 Hours_of_Service: 8am to 5pm M-F EST Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998