Lisa L. Robbins Paul O. Knorr Kira E. Barrera Kendra L. Daly 2013 tabular and vector digital data Data Series 822 St. Petersburg, FL U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center http://pubs.usgs.gov/ds/0822/data/2011_November/11BHM04_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 two 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). The cruises occurred September 20 - 28 and November 2 - 4, 2011. Both left from and returned to Saint Petersburg, Florida, but followed different routes (see Trackline). On both cruises the USGS collected data pertaining to pH, dissolved inorganic carbon (DIC), and total alkalinity in discrete samples. Discrete surface samples were taken during transit approximatly hourly on both cruises, 95 in September were collected over a span of 2127 km, and 7 over a trackline of 732 km line on the November cruise. Along with the surface samples, another set of samples were taken at various depths at stations; 27 in September at four stations and 15 in November at five stations. In addition to the discrete samples flow-through data was also collected on both cruises in a variety of forms. Surface CTD data was collected every five minutes which includes temperature, salinity, and pH. In addition, two more flow-through instruments were setup on both cruises that recorded pH and CO2 every 15 minutes. Corroborating the USGS data is 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. Discrete water samples were collected underway to corroborate the continuous pCO2 measurements. Water samples were analyzed for salinity, pH, and total alkalinity at the USGS geochemistry laboratory in St. Petersburg, Florida. This continuous flow through data is used to corroborate the discrete sample data using CO2SYS. 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, 11BHM04 tells us the data were collected in 2011 for Benthic Habitat Mapping and the data were collected during the fourth 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. 20111102 20111104 data collection Complete None planned -85.332380 -82.684770 27.61297 27.047220 USGS Metadata Identifier USGS:379847c0-5e98-48b2-9124-992825ad5b55 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 November 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. 20111102 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_November_Sonde.csv 2011_November_Sonde.xls The spreadsheet was imported into ArcGIS 10 and converted into a shapefile. 2011_November_Sonde.xls 20120816 2011_November_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 571 8.9831528411952133e-009 8.9831528411952133e-009 Decimal Degrees D WGS 1984 WGS 1984 6378137.0 298.257223563 2011_November_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 11BHM04 Date_UTC Date in UTC time zone; MM/DD/YYYY USGS Date of sample collection in MM/DD/YYYY format 20111102 20111104 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 20111102 20111104 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 27.04722 27.61297 decimal degrees Longitude Longitude in decimal degrees USGS -85.33293 -82.68477 decimal degrees Temp_C water temperature USGS 20.66 26.25 degrees Celsius Sp_Cond Specific conductivity USGS 51.63 54.81 microsemens/cm Sal_ppt Water salinity USGS 33.99 36.30 Parts per thousand (PPT) pH measure of acidity or alkalinity USGS 8.22 8.40 ODO Optical Disolved Oxygen % USGS 93.9 111.8 percentage (%) Chlorophyl water chlorophyll USGS 0 10.9 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., Barrera, K.E.., Daly, K.L., 2012, USGS Field Activities 11BHM03 and 11BHM04 on the West Florida Shelf, Gulf of Mexico, in September and November 2011: U.S. Geological Survey Data Series 822, available online at http://pubs.usgs.gov/ds/0822/. 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/0822/data/2011_November/11BHM04_Sonde.zip Free 20201013 USGS St. Petersburg Coastal and Marine Science Center Kira E. Barrera Research Assistant mailing and physical

600 4th Street South

St. Petersburg Florida 33701 US 727-8502-8044 727-502-8181 kbarrera@usgs.gov 8am to 5pm M-F EST FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time