Lisa L. Robbins
Kira E. Barrera
Kendra L. Daly
Paul O. Knorr
20190416
Discrete surface water data for samples collected in-transit along the West Florida Shelf in July and August, 2013
tabular digital data
U.S. Geological Survey Data Release
doi:10.5066/F7RB72R7
St. Petersburg, FL, USA
U.S. Geological Survey - St. Petersburg Coastal and Marine Science Center
http://dx.doi.org/10.5066/F7RB72R7
The United States Geological Survey (USGS) is studying 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 on the West Florida Shelf and northern Gulf of Mexico regions aboard the research vessel (R/V) Weatherbird II or Bellows, ships of opportunity led by Dr. Kendra Daly, of the University of South Florida (USF) in July and August, 2013. Cruises left from and returned to Saint Petersburg, Florida, but followed different routes. The USGS collected geochemical data pertaining to pH, dissolved inorganic carbon (DIC), total carbon dioxide (TCO2), and total alkalinity (TA) in discrete samples at various depths from predetermined stations. Discrete surface samples were also taken, while in transit, during both cruises.
Discrete water samples were collected underway and at stations. Water samples were analyzed at the USGS geochemistry laboratory in St. Petersburg, Florida. Data were collected during USGS field activity number (FAN) 13BHM01 and 13BHM02; additional survey details are available at http://cmgds.marine.usgs.gov/. This data release contains data for two benthic habitat cruises conducted in 2013: 13BHM01, July 8-12 (R/V Bellows) and 13BHM02, August 5-11 (R/V Weatherbird II).
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, 13BHM01 indicates the data were collected in 2013 for Benthic Habitat Mapping and the data were collected during the first field activity for that project in that calendar year.
20130708
20130811
ground condition
None planned
-88.32855
-82.67283
30.02197
27.08116
ISO 19115 Topic Category
geoscientificInformation
environment
oceans
USGS Thesaurus
geochemistry
marine geology
salinity
ocean acidification
marine chemistry
None
pH
total carbon
carbon flux
pCO2
temperature
ocean chemistry
None
West Florida Shelf
Florida
United States
None
Mesopelagic
Epipelagic
ocean surface
Bathypelagic
None
2013
None
The USGS and USF requests to be acknowledged as originators of the data in future products or derivative research.
USGS St. Petersburg Coastal and Marine Science Center
mailing and physical
600 4th Street South
St. Petersburg
Florida
33701
US
727-502-8000
727-502-8181
8 AM to 5 PM M-F EST
Microsoft Windows 7 Version 6.1 (Build 7600); Microsoft Excel 2010
Yao, W., and Byrne, R.
19980801
Simplified seawater alkalinity analysis: Use of linear array spectrometers
Philadelphia, PA
Deep Sea Research Part 1: Oceanographic Research Papers
45.8, 1383-1392
https://doi.org/10.1016/S0967-0637(98)00018-1
Dickson, A. G., Sabine, C. L., and Christian, J. R. (eds.)
2007
Guide to best practices for ocean CO2 measurements. PICES special publication 3, 191 pp.
Sidney, BC, Canada
North Pacific Marine Science Organization
http://cdiac.ornl.gov/ftp/oceans/Handbook_2007/Guide_all_in_one.pdf
These datasets are from field activities with consistent instrument calibrations.
This dataset is considered complete for the information presented, as described in the abstract section. Users are advised to read the rest of the metadata record carefully for additional details.
Surface samples were taken from a flowthrough system during ship transit (not at stations). Samples were transported to the USGS Carbon Chemistry Laboratory in St. Petersburg, Florida or Robert Byrne's Laboratory at USF. Total alkalinity samples were analyzed with a custom automatic titration system consisting of either a USB-4000 or USB-2000 fiber optic spectrometer (Ocean Optics, Inc. USA), a 665 Dosimat auto-titrator with stir plate, and a purging system with high-purity N2 gas following the methods of Yao and Byrne (1998). Total carbon was analyzed using a CM5014 CO2 coulometer (UIC, Inc., USA) with Model CM5130 Acidification Modules following the coulometric methods of Dickson and others (2007). Precision for these methods was better than ± 2 micromole per kilogram (mol/kg) for TA and TCO2.
2013
Data were entered into a spreadsheet and merged with the other project data sources: GPS from the ship, salinity and temperature from the YSI 6600 sonde, and the lab results of total alkalinity and disolved inorganic carbon from the USGS St. Petersburg Carbon Analytical Laboratory. Processed files were saved in Comma Separated Values (.csv) and Microsoft Excel Workbook (.xlsx) formats.
2013
2013_July_Samples_Surface.csv
2013_July_Samples_Surface.xlsx
2013_August_Samples_Surface.csv
2013_August_Samples_Surface.xlsx
0.019793873
0.0224041157
Decimal Degrees
D WGS 1984
WGS 1984
6378137.0
298.257223563
2013_July_Samples_Surface.csv, 2013_August_Samples_Surface.csv
Chemical and physical measurements of seawater surface samples
USGS
Cruise_ID
Cruise name according to the USGS Field Activity Number
USGS
13BHM01, 13BHM02
Sample
Sample identification number
USGS
Sequential, numeric sample identifier. "dup", if present indicates a duplicate sample collected for quality control purposes
Depth_m
Depth at which the sample was collected
USGS
0
0
meters
Date_Time_UTC
Date in UTC time zone; M/DD/YYYY
Time in UTC time zone; HH:MM
USGS
Date and time of sample collection in M/DD/YYYY HH:MM format Coordinated Universal Time (UTC)
Date_Time_EST
Date in EST time zone; M/DD/YYYY
Time in EST time zone; HH:MM
USGS
Date and time of data collection in M/DD/YYYY HH:MM Eastern Standard Time (EST)
Date_EST
Date of sample collection in M/DD/YYYY format EST
USGS
Date of data collection in M/DD/YYYY format EST
Time_EST
Time of data collection in HH:MM EST
USGS
Time of data collection in HH:MM EST
Latitude
Latitude in geographic coordinate system (World Geodetic System of 1984) decimal degrees
USGS
27.0811
30.0219
decimal degrees
Longitude
Longitude in geographic coordinate system (World Geodetic System of 1984) decimal degrees
USGS
-88.3285
-82.6728
decimal degrees
Salinity_ppt
Salinity in parts per thousand
USGS
20.10
37.50
parts per thousand
Temp_C
Water temperature in degrees Celsius
USGS
10.0
96.00
Degrees Celsius
TCO2 (µmol/kgSW)
Total Carbon Dioxide
USGS
1785.2
2100.3
micromole per kilogram of seawater
TCO2 (µmol/kgSW)_Flag
World Ocean Circulation Experiment (WOCE) Quality Control Data Flagging Convention (https://www.nodc.noaa.gov/woce/woce_v3/wocedata_1/whp/exchange/exchange_format_desc.htm)
USGS
2
Good
USGS
3
Questionable
USGS
4
Bad
USGS
6
Average of replicates
USGS
9
Not collected
USGS
TA (µmol/kgSW)
Total Alkalinity
USGS
2016.9
2442.58
micromole per kilogram of seawater
TA (µmol/kgSW)_Flag
World Ocean Circulation Experiment (WOCE) Quality Control Data Flagging Convention (https://www.nodc.noaa.gov/woce/woce_v3/wocedata_1/whp/exchange/exchange_format_desc.htm)
USGS
2
Good
USGS
3
Questionable
USGS
4
Bad
USGS
6
Average of replicates
USGS
9
Not collected
USGS
Notes
Description, concerns, viability of samples or environment
USGS
Description of sampling concerns, viability of samples or environment.
The entity and attribute information provided here describes the tabular datasets. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the dataset.
The entity and attribute information was generated by the individual and/or agency identified as the originator of the dataset. Please review the rest of the metadata record for additional details and information.
USGS St. Petersburg Coastal and Marine Science Center
mailing and physical address
600 4th Street South
St. Petersburg
Florida
33701
US
727-502-8000
This digital publication was prepared by an agency of the United States Government. Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, nor shall the act of distribution imply any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and (or) contained herein. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.
Microsoft Excel (.xls); Comma-delimited text file (.csv)
ZIP File Format
https://coastal.er.usgs.gov/data-release/doi-F7RB72R7/data/2013_July_Samples_Surface.zip
https://coastal.er.usgs.gov/data-release/doi-F7RB72R7/data/2013_August_Samples_Surface.zip
Free
2019
USGS St. Petersburg Coastal and Marine Science Center
mailing and physical address
600 4th Street South
St. Petersburg
Florida
33701
US
727-502-8000
727-502-8181
8 AM to 5 PM M-F EST
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
local time