Lisa L. Robbins
Kimberly K. Yates
Paul O. Knorr
Jonathan Wynn
John Lisle
Brian Buckowski
Barbara Moore
Larry Mayer
Andrew Armstrong
Robert H. Byrne
Xuewu Liu
2012 March
USGS Arctic Ocean Carbon Cruise 2011: Discrete Underway data
tabular digital data
Data Series
748
St. Petersburg, FL
U.S. Geological Survey
TBA
Models project the Arctic Ocean will become undersaturated with respect to carbonate minerals in the next decade. Recent field results indicate parts may already be undersaturated in late summer months when ice melt is at its greatest extent. However, few comprehensive data sets of carbonate system parameters in the Arctic Ocean exist. Researchers from the U.S. Geological Survey (USGS) and University of South Florida (USF) collected high-resolution measurements of pCO2, pH, total dissolved inorganic carbon (DIC), total alkalinity (TA), and carbonate (CO3-2) from the Canada Basin that fill critical information gaps concerning Arctic carbon variability. A Multiparameter Inorganic Carbon Analyzer (MICA) was used to collect approximately 9,000 measurements of air and sea pCO2, pH, and DIC along a 11,447-km trackline in August and September 2011. In addition, over 500 discrete surface water samples were taken. These data are being used to characterize and model regional pCO2, pH, and carbonate mineral saturation state. A high-resolution, three-dimensional map of these results will be presented.
Data collected on the August 2011 Arctic Cruise will be used to create regional maps of seawater carbonate parameters, including pCO2 flux/change maps, and derivative maps on saturation state. Maps depicting pCO2 and carbonate saturation states over large latitudinal and nearshore to offshore gradients are needed for the Arctic, where significant decline of carbonate ecosystems, habitats, and calcifying organisms are predicted over the next decade. The data will allow the USGS to map variations in ocean chemistry along designated tracks and will be used in models to predict future Arctic Ocean saturation states.
2011 August
ground condition
None planned
142.92
-119.186
88.44
59.99
Ocean Chemistry
Ocean Acidification
pCO2
total carbon
carbon flux
pH
Salinity
Temperature
Geography
Arctic Ocean
Canada Basin
Alaska
Canada
Water
seawater
ocean surface
Year
2011
none
Please acknowledge the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center as a data source in products developed from these data, and such acknowledgment as is standard for citation and legal practices for data source is expected by users of this data set.
Lisa Robbins
U.S. Geological Survey St. Petersburg Coastal and Marine Science Center
Research Oceanographer
physical
600 4th Street South
St. Petersburg
Florida
33701
USA
727-803-8747 x3005
727-803-2032
727-803-2032
8am to 5pm M-F EST
U.S. Geological Survey
St. Petersburg Coastal and Marine Science Center
Microsoft Excel 2010, Version 14.0.6112.5000 (32-bit)
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 are therefore inherently incomplete. Geologic details between lines must be inferred.
Discrete Surface Samples
Discrete water samples were collected while underway following protocols outlined in Dickson and others (2007). Surface water samples were collected for measurement of pH, total alkalinity/total carbon, nutrients (NH4, silica, PO4, and NO2+N), stable carbon and oxygen isotopic composition, elemental analysis, dissolved organic carbon (DOC) and particulate organic carbon (POC). Water samples were removed from the sampling port of the vessel's flow-through seawater system in the main laboratory. More than 515 pH discrete samples were measured underway. Generally, when the ship was traveling at 2-4 knots (kn), pH samples were collected every 2 h and analyzed. The remainder of the samples were taken every 6 h. When the ship traveled faster (~12 kn), pH samples were taken every hour and the rest of the suite of samples were taken every 4 h. Particulate organic carbon samples were collected twice daily. The results of the land-based analyses of total alkalinity/total carbon, nutrients (NH4, silica, PO4, and NO2+N), stable carbon and oxygen isotopic composition, elemental analysis, DOC, and POC, as well as profile data, will be reported when analyses are completed.
20120323
1600
HLY1102_Discrete_Underway.csv
Vector
Entity point
228
0.0000001
0.0000001
Decimal degrees
D_WGS_1984
WGS_1984
6378137.000000000000000000
298.257223563000030000
HLY1102_Discrete_Underway.csv
Discrete underway seawater samples that were analyzed onboard during the HLY 2011 cruise.
USGS
Date_(UTC)
Date in Coordinated Universal Time (UTC)
National Institute of Standards and Technology
8/18/2011
9/27/2011
dd/mm/yyyy
Time_(UTC)
Time (24-hour clock) in Coordinated Universal Time (UTC)
National Institute of Standards and Technology
00:00
23:59
hh:mm
Sample_ID
Sample identification number.
USGS
8
515
Latitude_(Decimal_Degrees)
Latitude in decimal degrees
WGS 84
59.99
88.44
decimal degrees
Longitude_(Decimal_Degrees)
Longitude in decimal degrees
WGS 84
-179.99
179.99
decimal degrees
SST_(Celsius)
Intake Sample Temperature, degrees Celsius, measured using the USCGC Healy's SBE3 remote temperature probe. This value is the sea surface temperature.
USGS
-1.69
8.36
Celsius
Salinity_(PSU)
Salt content, in Practical Salinity Units, measured using the USCGC Healy's SBE45 instrument.
USGS
19.11
32.6
Practical Salinity Units (PSU)
pH_(total)_at_25C
pH of seawater, total scale.
User-Defined
7.59
7.81
Lisa Robbins
U.S. Geological Survey St. Petersburg Coastal Marine and Science Center
Physical
600 4th Street South
St. Petersburg
Florida
33701
USA
727-803-8747 x3005
Downloadable Data
This 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 (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS shall not be held liable for improper or incorrect use of the data described and/or contained herein. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
CSV
46.5 KB
https://pubs.usgs.gov/ds/???
Free, if obtained online.
20120426
Paul O. Knorr
U.S. Geological Survey
Research Associate
mailing address
600 4th Street South
St. Petersburg
Florida
33701
USA
727-803-8747
727-803-2032
pknorr@usgs.gov
8am to 5pm M-F EST
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
http://www.esri.com/metadata/esriprof80.html
ESRI Metadata Profile