Lisa L. Robbins
Kimberly K. Yates
Matthew D. Gove
Paul O. Knorr
Jonathan Wynn
Robert H. Byrne
Xuewu Liu
2012 March
USGS Arctic Ocean Carbon Cruise 2010: Nutrient Data
tabular digital data
Data Series
741
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 datasets 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 Chukchi Sea and Canada Basin that fill critical information gaps concerning Arctic carbon variability. A Multiparameter Inorganic Carbon Analyzer (MICA) was used to collect over 22,000 measurements of air and sea pCO2, pH, and DIC along a 9,450-km trackline during August 2010. In addition, 240 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 2010 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.
2010 August
ground condition
None planned
-167.2
-119.5
82.5
68.8
Ocean Chemistry
Ocean Acidification
pCO2
total carbon
carbon flux
pH
Nutrients
Geography
Arctic Ocean
Canada Basin
Alaska
Canada
Water
seawater
ocean surface
Year
2010
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
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.
A syringe that was pre-rinsed with sample water was used to collect approximately 60 mL of seawater. A Sterivex filter cartridge (pore size 0.22 micrometer, ¼m) was attached to the Luer-Lock fitting of the syringe and was rinsed with approximately 40 mL of sample. The remaining 20 mL of sample was then collected in a 20-mL glass scintillation vial and frozen. Samples were analyzed for NH4, silica, PO4, and NO2+N at the Woods Hole Oceanographic Institution (WHOI) Nutrient Analytical Facility.
20120313
1600
HLY1002_Nutrients.csv
Vector
Entity point
100
0.0000001
0.0000001
Decimal degrees
D_WGS_1984
WGS_1984
6378137.000000000000000000
298.257223563000030000
HLY1002_Nutrients.csv
Nutrient data from the HLY 1002 cruise.
USGS
Station_ID
Sample identification number. Duplicate samples identified by additional letter qualifier.
USGS
3
304
Latitude_(Decimal_Degrees)
Latitude in decimal degrees
WGS 84
68.8
82.5
decimal degrees
Longitude_(Decimal_Degrees)
Longitude in decimal degrees
WGS 84
-179.99
179.99
decimal degrees
Depth_(m)
Depth at which sample was taken. Zero (0) indicates surface sample.
USGS
0
3824
Meters
NH4_uM
Concentration of ammonium (NH4) in micromoles.
USGS
<0.05
1.4
micromoles per liter
Silicate_uM
Concentration of silicate (SiO2) in micromoles.
USGS
-999
No Data value
1.2
35.4
micromoles per liter
PO4_uM
Concentration of phosphate (PO4) in micromoles.
USGS
-999
No Data value
0.1
1.4
micromoles per liter
NO2+NO3_uM
Concentration of nitrogen (NO2 + NO3) in micromoles.
USGS
-999
No Data value
<0.05
15.5
micromoles per liter
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
5.36 KB
https://pubs.usgs.gov/ds/???
Free, if obtained online.
20120314
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