CO2

Data Object CO2

contact PIs:

name	title
Dr Frank Millero	Principal Investigator

Dataset description

IronExII Underway CO2 Data

Acquisition description

IronEx II CO2 data
Continuous underway sampling from JD 147 to JD 167

Calculated TCO2 data for every pCO2 point assuming a constant total alkalinity (+/- 5 umol kg-1).

The precision for pCO2 is +/- 12 ppm and the precision for TCO2 is about +/- 5 umol kg-1

Processing description

BCO-DMO Processing Notes
Prepared by WHOI OCB-DMO from original file: FeX2 edited CO2.xls
Original file was downloaded on 16June2008 from http://www.mbari.org/sofex/IronEx_II.htm

Changes made to original file:
- Parameter headers edited to conform to BCO-DMO convention
- Date, time generated from yrday and hr_decmin
- Date formatted as YYYYMMDD
- Time formatted as HHMM
- Decimal places padded to 1,2 places as appropriate for consistency
- “nd” added for no data values and blank fields

Field Names List

Parameter	Description	Units
date	Date UTC	YYYYMMDD
time	Time UTC	HHMM
lat	latitude, negative denotes South	decimal degrees
lon	longitude, negative denotes West	decimal degrees
yrday	Day of year	integer
hr_decmin	Time as hours, decimal hours	hh.hh
Xdist	X Distance of ?????	meters
Ydist	Y Distance of ?????	meters
pCO2	Partial pressure of carbon dioxide in the surface waters	ppm
TCO2	Total carbon dioxide	umol kg-1
temp	Sea surface temperature (??)	degrees celsius

Platforms List

R/V Melville IronExII_MV

This document is created from the content of the BCO-DMO metadata database. 2010-09-02 21:48:41

info app: /home/bco/dbase-v2 v.100108 CLC
Data URL: http://data.bco-dmo.org/jg/serv/BCO/Fe_Synthesis/IronEx_II/CO2.