README



Getting Started
      
      To access the information contained on this disc, use a Web browser 
to open the file index.html. 

System Requirements
      
      This disc is readable on any computing platform that has standard 
Compact Disc (CD) driver software installed. The minimum software 
requirements are a Web browser and a text editor.

CD Organization
      
      This report is divided into six sections: Home, Acronyms and 
Abbreviations, Disc Contents, Methods, Data, Federal Geographic Data 
Committee (FGDC) Metadata, and Maps. Links at the top and bottom of each page 
provide access to these sections. This report contains links to the U.S. 
Geological Survey (USGS), collaborators, and other available resources if 
access to the Internet is available while viewing these documents.  
Geographic Information System (GIS) files, Hypertext Markup Language 
(HTML) files and images used to produce the Web pages, and this readme 
file are also included in this report.  The Disc Contents are as follows:

data/ 					Folder containing comma-separated value files and data key PDF file
					Identifier 'HLY1202' indicates the second mission of 2012 on the USCGC Healy

HLY1202_Discrete_Underway.csv		Discrete Sample Data Analyzed Underway 

HLY1202_Discrete_Underway_Lab.csv		Discrete Sample Data Analyzed at Shore-Based Laboratory

HLY1202_Isotopes.csv 			Discrete isotope data analyzed at USF Stable Isotope Laboratory 

HLY1202_Metals.csv 			Trace metals data analyzed at USF Marine Science Laboratory 

HLY1202_MICA.csv			MICA Data Taken Underway 

HLY1202_Nutrients.csv			Nutrients data analyzed at USGS-WHOI

HLY1202_Underway_Data.csv 		HLY1202 Shipboard Sensor Underway Data 

html/					Folder containing HTML files for browsing dataset 

images/ 				Folder containing images used in HTML files 

acronyms.html 				HTML file containing a list of acronyms and abbreviations 

contents.html 				HTML file with directory of the report's content (this file) 

data.html 				HTML file with links to cruise data 

methods.html 				HTML file with data collection and processing methods 

maps.html				HTML file with links to map data 

metadata.html 				HTML file with links to metadata files 

metadata/ 				Folder containing metadata for cruise and trackline data 

HLY1202_Discrete_Underway.xml		XML metadata for Discrete Sample Data Analyzed Underway

HLY1202_Discrete_Underway_Lab.xml		XML metadata for Discrete Sample Data Analyzed at Shore-Based Laboratory

HLY1202_Isotopes.xml 			XML metadata for Isotopes Data

HLY1202_Metals.xml 			XML metadata for Trace Metals Data

HLY1202_MICA.xml 			XML metadata for MICA Data

HLY1202_Nutrients.xml 			XML metadata for Nutrients Data

HLY1202_Station.xml 			XML metadata for CTD, pH, and TA Station Data

HLY1202_Underway_Data.xml 		XML metadata for Shipboard Sensor Data

shp/ 					Parent folder for trackline shapefiles 

data/ 					Folder containing seawater chemistry shapefiles 

Healy_Continuous.zip			Compressed file containing shapefile of the Healy MICA Data 

Healy_Discrete.zip			Compressed file containing shapefile of the Discrete Sample Data 

CTD_Casts.zip				Compressed file containing shapefile of the CTD Data 

Arctic_Bathymetry.zip			Compressed file containing raster of the Arctic Ocean Bathymetry Data 

trackline/ 				Folder containing trackline shapefiles 

HLY1202Trackline.zip			Compressed file containing shapefile of the Healy Trackline Data 

index.html 				Index HTML file 


      
Project Summary
      
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 1,800 measurements of pH and DIC along a 11,965-km trackline in August and September 2012. In addition, over 600 discrete surface water samples were taken. These data are being used to characterize and model regional pCO2, pH, and carbonate mineral saturation state.