Lisa L. Robbins Carl A. Taylor Kendra L. Daly Paul O. Knorr 2013 tabular and vector digital data Data Series 712 St. Petersburg, FL U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center http://pubs.usgs.gov/ds/0712/data/2011_June/11BHM02_Sonde.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 June 25-30, 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. Forty-eight underway discrete samples were collected approximately hourly over a span of 1130 kilometer (km) track line. 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, 11BHM02 tells us the data were collected in 2011 for Benthic Habitat Mapping 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. 20120625 20120630 data collection Complete None planned -87.89825 -82.60867 30.0544 27.60252 USGS Metadata Identifier USGS:81d35c4b-f522-4692-957f-ced18570e4e6 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 June 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 727-502-8005 727-502-8181 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. A YSI 6600 conductivity-temperature-depth (CTD) sonde coupled with a YSI 650 Multi-Parameter Display System (MDS) was deployed to provide temperature and salinity values for water chemistry calculations during the cruise. Seawater scale pH values were also recorded. The sonde was located in the wet lab of the R/V Weatherbird II. The sonde was attached to a seawater flowthrough system that siphoned water from approximately 4 feet below the water surface. The flow rate varied somewhat with weather condition and turned off in 6 foot and higher waves. Data values were logged at 5 minute intervals. The ship’s cruising speed was 9 knots. 20110625 Data exported from YSI 650 MDS and converted to comma deliminated file (CDF) within EcoWatch software. These data were imported into Microsoft Excel and formatted into a single spreadsheet. Data from GPS with latitude/longitude were joined to water parameters using time and date stamps. 20120816 2011_June_Sonde.csv 2011_June_Sonde.xls The spreadsheet was imported into ArcGIS 10 and converted into a shapefile. 2011_June_Sonde.xls 20120816 2011_June_Sonde.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 1333 8.9831528411952133e-009 8.9831528411952133e-009 Decimal Degrees D WGS 1984 WGS 1984 6378137.0 298.257223563 2011_June_Surface_Sonde Physical and chemical measurements of surface water from a YSI sonde 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 11BHM02 Date_UTC Date in UTC time zone; MM/DD/YYYY USGS Date of sample collection in MM/DD/YYYY format 20110625 20110630 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 20110625 20110630 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 27.03318 29.43803 decimal degrees Longitude Longitude in decimal degrees USGS -86.05113 -82.63968 decimal degrees Temp_C water temperature USGS 24.85 30.68 degrees Celsius Sp_Cond Specific conductivity USGS 39.74 55.23 microsemens/cm Sal_ppt Water salinity USGS 25.26 36.51 Parts per thousand (PPT) pH measure of acidity or alkalinity USGS 8.17 8.37 ODO Optical Disolved Oxygen % USGS 0 102.1 percentage (%) Chlorophyl water chlorophyll USGS -0.7 16.1 Micrograms per litre (ug/L) 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 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/0712/. USGS St. Petersburg Coastal and Marine Science Center Lisa Robbins mailing and physical

600 4th Street South

St. Petersburg Florida 33701 US 727-502-8005 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/0712/data/2011_June/11BHM02_Sonde.zip Free 20211109 United States Geological Survey, St. Petersburg Coastal and Marine Science Center SPCMSC Data Management Group mailing and physical address

600 4th Street South

St. Petersburg Florida 33701 US 727-502-8000 gs-g-spcmsc_data_inquiries@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998