Navigation and environmental data from R/V Weatherbird II for the West Florida Shelf: USGS Cruise 11CEV02

Frequently anticipated questions:

What does this data set describe?

Title:
Navigation and environmental data from R/V Weatherbird II for the West Florida Shelf: USGS Cruise 11CEV02
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 February 17-23, 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. Seventy-one underway discrete samples were collected approximately hourly over a span of 1628 kilometer (km) track line, additionally 34 samples were taken at 10 stations. 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.
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, 11CEV02 tells us the data were collected in 2011 for the Climate and Environmental Variability and the data were collected during the second 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.
  1. How should this data set be cited?

    Taylor, Carl A. , Daly, Kendra L. , Knorr, Paul O. , and Robbins, Lisa L. , 20120101, Navigation and environmental data from R/V Weatherbird II for the West Florida Shelf: USGS Cruise 11CEV02: Data Series 711, U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center, St. Petersburg, FL.

    Online Links:

    • 2012

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -87.90138
    East_Bounding_Coordinate: -82.60873
    North_Bounding_Coordinate: 30.06863
    South_Bounding_Coordinate: 27.60303

  3. What does it look like?

  4. Does the data set describe conditions during a particular time period?

    Beginning_Date: 17-Feb-2011
    Ending_Date: 23-Feb-2011
    Currentness_Reference: data collection

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: tabular and vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • Entity point (9851)

    2. What coordinate system is used to represent geographic features?

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 8.9831528411952133e-009. Longitudes are given to the nearest 8.9831528411952133e-009. Latitude and longitude values are specified in Decimal Degrees.

      The horizontal datum used is D WGS 1984.
      The ellipsoid used is WGS 1984.
      The semi-major axis of the ellipsoid used is 6378137.0.
      The flattening of the ellipsoid used is 1/298.257223563.

  7. How does the data set describe geographic features?

    2011_February_Navigation
    Navigation and environmental conditions for USGS Cruise 11CEV02 (Source: USGS)

    FID*
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    Shape*
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    Cruise_ID
    Cruise name according to the USGS Field Activity Collection (Source: USGS)

    11CEV02

    Date_UTC
    Date in UTC time zone; MM/DD/YYYY (Source: USGS)

    Date of sample collection in MM/DD/YYYY format

    Time_UTC
    Time of data collection in HH:MM UTC, 24 hour format (Source: USGS)

    Time of data collection in HH:MM UTC

    Date_EDT
    Date in EDT time zone; MM/DD/YYYY (Source: USGS)

    Date of sample collection in MM/DD/YYYY format

    Time_EDT
    Time of data collection in HH:MM EDT, 24 hour format (Source: USGS)

    Time of data collection in HH:MM EDT

    WXTP_Ta
    Weather Transmitter Port_ Air Temperature (Deg C) (Source: Calliope Software)

    Range of values
    Minimum:14.2
    Maximum:23.7
    Units:degrees celsius

    WXTS_Ta
    Weather Transmitter Port_ True Wind Speed (m/s) (Source: Calliope Software)

    Range of values
    Minimum:14.4
    Maximum:24.1
    Units:meters per second

    WXTS_Pa
    Weather Transmitter Port_ Air Pressure (hPa) (Source: Calliope Software)

    Range of values
    Minimum:1013
    Maximum:1025
    Units:hecto pascal

    WXTP_Pa
    Weather Transmitter Port_ Air Pressure (hPa) (Source: Calliope Software)

    Range of values
    Minimum:1012.9
    Maximum:1024.9
    Units:hecto pascal

    TSG_COND
    Thermosalinograph_Conductivity (S/m) (Source: Calliope Software)

    Range of values
    Minimum:0.0007
    Maximum:5.9449
    Units:siemens per a meter

    dec_lat
    Lattitude (Decimal Degrees) (Source: Calliope Software)

    Range of values
    Minimum:27.60245
    Maximum:30.05445
    Units:decimal degrees

    dec_lon
    Longitude (Decimal Degrees) (Source: Calliope Software)

    Range of values
    Minimum:-87.89825
    Maximum:-82.60813
    Units:decimal degrees

    Depth
    Depth under keel (meters) (Source: Calliope Software)

    Range of values
    Minimum:1
    Maximum:1544.9
    Units:meters

    COG
    Course over ground (degrees) (Source: Calliope Software)

    Range of values
    Minimum:0
    Maximum:359
    Units:degrees

    SOG
    Speed over ground (knots) (Source: Calliope Software)

    Range of values
    Minimum:0
    Maximum:10.6
    Units:knots

    WXTP_Rc
    Weather Transmitter Port_ Rain Accumulation (mm since last reset) (Source: Calliope Software)

    Range of values
    Minimum:13.2
    Maximum:13.2
    Units:millimeter

    WXTS_Rc
    Weather Transmitter Starboard_ Rain Accumulation (mm since last reset) (Source: Calliope Software)

    Range of values
    Minimum:14.56
    Maximum:14.59
    Units:millimeter

    WXTp_Ri
    Weather Transmitter Port_ Rain Intensity (mm/hr) (Source: Calliope Software)

    Range of values
    Minimum:10
    Maximum:10
    Units:millimeters per hour

    WXTS_Ri
    Weather Transmitter Starboard_ Rain Intensity (mm/hr) (Source: Calliope Software)

    Range of values
    Minimum:0
    Maximum:1.5
    Units:millimeters per hour

    WXTP_Ua
    Weather Transmitter Port_ Relative Humidity (%) (Source: Calliope Software)

    Range of values
    Minimum:42.4
    Maximum:93.2
    Units:percent

    WXTS_Ua
    Weather Transmitter Starboard_ Relative Humidity (%) (Source: Calliope Software)

    Range of values
    Minimum:42.3
    Maximum:92.9
    Units:percent

    WXTP_Dm
    Weather Transmitter Port_ Wind Direction Average (degrees) (Source: Calliope Software)

    Range of values
    Minimum:0
    Maximum:359
    Units:degrees

    WXTS_Dm
    Weather Transmitter Starboard_ Wind Direction Average (degrees) (Source: Calliope Software)

    Range of values
    Minimum:0
    Maximum:359
    Units:degrees

    WXTP_Sm
    Weather Transmitter Port_ Wind Speed Average (m/s) (Source: Calliope Software)

    Range of values
    Minimum:0.1
    Maximum:13.2
    Units:meters per second

    WXTS_Sm
    Weather Transmitter Starboard_ Wind Speed Average (m/s) (Source: Calliope Software)

    Range of values
    Minimum:0.1
    Maximum:22.2
    Units:meters per second

    TSG_SALPSU
    Thermosalinograph_Salinity (Practical Salinity Units) (Source: Calliope Software)

    Range of values
    Minimum:0.1
    Maximum:105.27
    Units:practical salinity units(PSU)

    HDT
    Ship's Heading (degrees) (Source: Calliope Software)

    Range of values
    Minimum:0.1
    Maximum:359.9
    Units:degrees

    TSG_TEMP1
    Thermosalinograph_Temperature 1 (Deg C) (Source: Calliope Software)

    Range of values
    Minimum:-7.8798
    Maximum:38.5985
    Units:degrees celsius

    TSG_TEMP2
    Thermosalinograph_Temperature 2(Deg C) (Source: Calliope Software)

    Range of values
    Minimum:14.1132
    Maximum:23.0622
    Units:degrees celsius

    WXTP_TD
    Weather Transmitter Port_ True Wind Direction (degrees) (Source: Calliope Software)

    Range of values
    Minimum:0
    Maximum:359.8
    Units:degrees

    WXTS_TD
    Weather Transmitter Starboard_ True Wind Direction (degrees) (Source: Calliope Software)

    Range of values
    Minimum:0.2
    Maximum:359.8
    Units:degrees

    WXTP_TS
    Weather Transmitter Port_ True Wind Speed (m/s) (Source: Calliope Software)

    Range of values
    Minimum:0.076
    Maximum:9.798
    Units:meters per second

    WXTS_TS
    Weather Transmitter Starboard_ True Wind Speed (m/s) (Source: Calliope Software)

    Range of values
    Minimum:0.049
    Maximum:17.879
    Units:meters per second

    TSG_WETFL
    Thermosalinograph_Wetlabs Fluorometer (mg/m^3) (Source: Calliope Software)

    Range of values
    Minimum:-0.0812
    Maximum:59.2634
    Units:miligrams per cubic meter

    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. The R/V Weatherbird II has a program called Calliope that records all the navigation and environmental conditions of the ship every minute, these data are most of what is documented here.
    Entity_and_Attribute_Detail_Citation:
    Robbins, L.L., Knorr, P.O., Taylor, C.A., Daly, K.L., 2012, USGS Field Activities 11CEV01 and 11CEV02 on the West Florida Shelf, Gulf of Mexico, in January and February 2011: U.S. Geological Survey Data Series 711, available online at <http://pubs.usgs.gov/ds/711/>.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

  3. To whom should users address questions about the data?

    USGS St. Petersburg Coastal and Marine Science Center
    Attn: Lisa Robbins
    Research Oceanographer
    600 4th Street South
    St. Petersburg, Florida 33701
    US

    727-803-8747 (voice)
    727-803-2032 (FAX)
    lrobbins@usgs.gov

    Hours_of_Service: 8am to 5pm M-F EST

Why was the data set created?

The purpose is to study the effects of climate change on ocean acidification within the Gulf of Mexico.

How was the data set created?

  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

    Date: 17-Feb-2011 (process 1 of 3)
    This is the Calliope Software recording from the R/V Weatherbird II during the cruise. It includes data from all the sensors running during the cruise.

    Date: 26-Jun-2012 (process 2 of 3)
    Data exported from comma deliminated .txt files into Microsoft Excel and formatted into a single spreadsheet.

    Data sources produced in this process:

    • 2011_February_Navigation.csv
    • 2011_February_Navigation.xls

    Date: 26-Jun-2012 (process 3 of 3)
    The spreadsheet was imported into ArcGIS 10 and converted into a shapefile.

    Data sources used in this process:

    • 2011_February_Navigation.xls

    Data sources produced in this process:

    • 2011_February_Navigation.shp

  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?

  2. How accurate are the geographic locations?

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    These data are collected along tracklines (2-D) and therefore are inherently incomplete. There are no data collected between tracklines.

  5. How consistent are the relationships among the observations, including topology?

    These data were collected in the field and have not been checked for internal consistencies.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None
Use_Constraints:
USGS and USF requests to be acknowledged as originator of the data in future products or derivative research.

  1. Who distributes the data set? (Distributor 1 of 1)

    USGS St. Petersburg Coastal and Marine Science Center
    Attn: Lisa Robbins
    600 4th Street South
    St. Petersburg, Florida 33701
    US

    727-803-8747 (voice)

  2. What's the catalog number I need to order this data set?

  3. What legal disclaimers am I supposed to read?

    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.

  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 15-Aug-2012
Metadata author:
USGS St. Petersburg Coastal and Marine Science Center
Attn: Carl Taylor
Biological/Geological Technician I
600 4th Street South
St. Petersburg, Florida 33701
US

727-803-8747 (voice)
727-803-2032 (FAX)
carltaylor@usgs.gov

Hours_of_Service: 8am to 5pm M-F EST
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

Generated by mp version 2.9.15 on Thu Aug 23 08:53:47 2012