Lisa L. Robbins
Carl A. Taylor
Kendra L. Daly
Paul O. Knorr
20120101
Autonomous Flow-Thru (AFT) CO2 data of the West Florida Shelf: USGS Cruise 11BHM01
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_May/11BHM01_AFT_CO2.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 May 03 - 09, 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-four underway discrete samples were collected approximately hourly over a span of 1632 kilometer (km) track line, additionally 44 discrete samples were taken at four stations, these were taken at various depths. 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, 11BHM01 tells us the data were collected in 2011 for Benthic Habitat Mapping 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.
2011
data collection
None planned
-87.89468
-82.82817
30.00147
27.60952
USGS Metadata Identifier
USGS:46ecbe8a-fc7e-4077-8ea6-8942b8bcd840
Ocean Chemistry
pH
total carbon
Salinity
carbon flux
Ocean Acidification
pCO2
Temperature
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
Region
West Florida Shelf
Florida
United States
None
Mesopelagic
Epipelagic
ocean surface
Bathypelagic
None
2011 May
None
USGS and USF requests to be acknowledged as originator of the data in future products or derivative research.
United States Geological Survey St. Petersburg Coastal and Marine Science Center
Lisa Robbins
Research Oceanographer
Unknown
600 4th Street South
St. Petersburg
Florida
33701
USA
727-502-8005
727-502-8181
8am to 5pm M-F EST
Microsoft Windows Server 2008 R2 Version 6.1 (Build 7600) ; ESRI ArcGIS 10.0.2.3200 ; Microsoft Excel
The QA/QC process looked for internal consistencies in the data by calculating the results using CO2SYS and back checking with the collected data.
These data are collected along tracklines (2-D) and therefore inherently incomplete geologic details between lines must be inferred.
Flow-through data was collected using a Sunburst AFT pH, which measures pH on the total hydrogen ion scale, was attached to the flow-through system. This system sampled the seawater approximately every three minutes and has a precision and accuracy of 0.001 and ±0.003, respectively. The Sunburst AFT-CO2 system was used to measure the partial pressure of CO2 in water (pCO2) and was attached to the shipboard flow-through system. The instrument sampled approximately every five minutes and had a precision and accuracy of about 1 ppm and ± 3 ppm, respectively.
20110503
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.
20120816
2011_May_AFT_CO2.csv
2011_May_AFT_CO2.xls
The spreadsheet was imported into ArcGIS 10 and converted into a shapefile.
2011_May_AFT_CO2.xls
20120816
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
191
8.9831528411952133e-009
8.9831528411952133e-009
Decimal degrees
D WGS 1984
WGS 1984
6378137.0
298.257223563
West Florida Shelf Autonomous flow-thru (AFT) data
Autonomous Flow Through (AFT) systems continuous measurements of chemical and physical parameters of seawater
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
Coordinates defining the features.
Date_UTC
Date in UTC time zone; MM/DD/YYYY
USGS
Date of sample collection in MM/DD/YYYY format
20110503
20110509
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
user
Date of sample collection in MM/DD/YYYY format
20110503
20110509
Time_EDT
Time of data collection in HH:MM EDT, 24 hour format
user
Time of data collection in HH:MM EDT
Latitude
Latitude in decimal degrees
WGS 1984
27.60638
30.06772
Longitude
Longitude in decimal degrees
WGS 1984
-87.9014
-82.66093
CO2
a measure of CO2 of a solution
USGS
7.4616
9.1623
Temp_C
water temperature
USGS
22.89
26.48
Ship_Sal_P
Salinity
USGS
30.45
36.66
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/.
U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
Lisa Robbins
mailing and physical address
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)
Microsoft Excel (.xls); Comma-delimited text file (.csv); ArcGIS (.SHP)
http://pubs.usgs.gov/ds/0712/data/2011_May/11BHM01_AFT_CO2.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