Carl A. Taylor Kendra L. Daly Paul O. Knorr Lisa L. Robbins 20120101 tabular and vector digital data Data Series 711 St. Petersburg, FL U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center http://pubs.usgs.gov/ds/0711/data/2011_January/11CEV01_Samples_Surface.zip 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 January 3-7, 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-six underway discrete samples in January were collected approximately hourly over a span of 745.3 km 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. The purpose is to study the effects of climate change on ocean acidification within the Gulf of Mexico. 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, 11CEV01 tells us the data were collected in 2011 for the Climate and Environmental Variability 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. 20110103 20110107 data collection Complete None planned -87.9016 -82.60858 30.06935 27.60303 USGS Metadata Identifier USGS:8605fbdb-c42a-4bf5-9c50-49dd2edd2775 None pH total carbon Salinity carbon flux Ocean Acidification pCO2 Temperature Ocean Chemistry Data Categories for Marine Planning assessments physical/chemical features Marine Realms Information Bank (MRIB) Keywords chemical analysis chemical oceanography environmental chemistry ocean acidification USGS Thesaurus chemical analysis marine chemistry ocean acidification None West Florida Shelf Florida United States None Mesopelagic Epipelagic ocean surface Bathypelagic None 2011 January None USGS and USF requests to be acknowledged as originator of the data in future products or derivative research. USGS St. Petersburg Coastal and Marine Science Center Lisa Robbins Research Oceanographer mailing and physical

600 4th Street South

St. Petersburg Florida 33701 US 727-803-8747 727-803-2032 lrobbins@usgs.gov 8am to 5pm M-F EST Microsoft Windows 7 Version 6.1 (Build 7600) ; ESRI ArcGIS 10.0.4.4000 These data were collected in the field and have not been checked for internal consistencies. These data are collected along tracklines (2-D) and therefore are inherently incomplete. There are no data collected between tracklines. Surface samples were taken approximatly hourly from a flowthrough system during ship transit (not at stations). Samples then analyzed for total alkalinity and disolved inorganic carbon at the USGS St. Petersburg Carbon Analytical Laboratory. 20110103 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. 20120626 2011_January_Discrete_Samples_Surface.csv 2011_January_Discrete_Samples_Surface.xls The spreadsheet was imported into ArcGIS 10 and converted into a shapefile. 2011_January_Discrete_Samples_Surface.xls 20120814 2011_January_Discrete_Samples_Surface.shp Keywords section of metadata optimized for discovery in USGS Coastal and Marine Geology Data Catalog. 20170313 U.S. Geological Survey Alan O. Allwardt Contractor -- Information Specialist mailing and physical address

2885 Mission Street

Santa Cruz CA 95060 831-460-7551 831-427-4748 aallwardt@usgs.gov Added keywords section with USGS persistent identifier as theme keyword. 20201013 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Vector Entity point 36 8.9831528411952133e-009 8.9831528411952133e-009 Decimal Degrees D WGS 1984 WGS 1984 6378137.0 298.257223563 2011_January_Discrete_Samples_Surface Chemical and physical measurements of surface water USGS FID* Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape* Feature geometry. ESRI Coordinates defining the features. Cruise_ID Cruise name according to the USGS Field Activity Collection USGS 11CEV01 Sample Sample indentification number USGS WFS followed by sample number (WFS##) Depth_m depth that sample was collected at (meters) USGS 0 0 Date_UTC Date in UTC time zone; MM/DD/YYYY USGS Date of sample collection in MM/DD/YYYY format 20110104 20110107 Time_UTC Time of data collection in HH:MM UTC, 24 hour format USGS Time of data collection in HH:MM UTC Date_EDT Date in EDT time zone; MM/DD/YYYY USGS Date of sample collection in MM/DD/YYYY format 20110104 20110107 Time_EDT Time of data collection in HH:MM EDT, 24 hour format USGS Time of data collection in HH:MM EDT Latitude Latitude in decimal degrees USGS 27.607 29.752 decimal degrees Longitude Longitude in decimal degrees USGS -84.388 -82.7829 decimal degrees Sal_ppt Water salinity USGS 32.94 36.02 Parts per thousand (PPT) Temp_C water temperature USGS 13.44 16.52 degrees Celsius TCO2 Total Carbon Dioxide USGS 2078.5 2193.5 micromol per kilogram TA Total Alkalinity USGS 2346.3 2413.3 micromol per kilogram sw Notes description, concerns, viability of samples or environment USGS text Flag Viability of sample USGS 1 Good USGS 2 Not Available (Avoid Using) USGS 3 Bad (Avoid Using) USGS 4 Interpolated/Last good value USGS 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. 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/. USGS St. Petersburg Coastal and Marine Science Center Lisa Robbins mailing and physical address

600 4th Street South

St. Petersburg Florida 33701 US 727-803-8747 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. Microsoft Excel (.xls); Comma-delimited text file (.csv); ArcGIS (.SHP) ZIP File Format http://pubs.usgs.gov/ds/0711/data/2011_January/11CEV01_Samples_Surface.zip Free 20201013 USGS St. Petersburg Coastal and Marine Science Center Carl Taylor Biological/Geological Technician I mailing and physical address

600 4th Street South

St. Petersburg Florida 33701 US 727-803-8747 727-803-2032 carltaylor@usgs.gov 8am to 5pm M-F EST FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time