CDIAC underway pCO₂ Metadata Form

Investigator(s) Responsible for Measurements


  First Name  Last Name 
Organization 
     Address 
             
        City  State  Zip 
     Country 
       Phone  Fax 
      E-mail

Method Description

Note: If you are filling out this form for multiple cruises and the methods do not change, please fill out this methods section only once and leave subsequent submissions blank or address only those methods questions that apply to that particular cruise.

Design of Equilibrator

Type If other, please describe

Size (approximate total volume) L

Water flow rate L/min

Headspace gas flow rate L/min

Vented? yes no

Method of CO₂ Measurement

on gas

If other, please describe

Information about Calibration Gases Used

Manufacturer (e.g., Aire Liquide (France))

Approximate Concentrations of the Calibration Gases Used

Concentration	Accuracy
ppm
ppm
ppm
ppm

Measurement Cycle Information

Calibration Frequency

Measurement Frequency for Air Measurements

Measurement Frequency for Water Measurements

Are Measurements Averaged Before Reporting? yes no

If so, how many points and over what time period?

Describe the Calibration of the Various Sensors Used

(e.g., Equilibrator T sensor calibrated against standard thermometers in 1993)

(e.g., Pressure sensors compared against ship barometer)

Bibliographic Citations to Publications Describing this Method

Cruise Information

Experiment/Cruise/Leg(s)

Vessel Name and Identification Number

Country/Institution Owning and Operating Vessel

Depth of Sea Water Intake Below Sea Surface

Location of Air Intake

Types of CO₂ Concentration Data Reported

What Corrections Were Made to the CO₂ Concentration Data Prior to Reporting It?

What Corrections Were Made to the Temperature Data Before Reporting It?

What Corrections Were Made to the Pressure Data Before Reporting It?

What Corrections Were Made to the Humidity Data Before Reporting It?

Estimate the Overall Precision and Probable Accuracy of the Underway CO₂ Concentration Measurements Reported

Precision		Accuracy
	In Air
	In Water

Estimate the Precision and Probable Accuracy of the Sea Surface Temperature Measurements

Bibliographic Citations to Other Published Work Describing this Data Set

Please specify whether the following information is available for your air and/or sea water measurements and whether the information is available in machine-readable form.

AIR MEASUREMENTS
Date and time (UT) of measurement
Position of measurement
Concentration of CO₂ in atmospheric air
Atmospheric pressure
Sea surface temperature
Wind speed

WATER MEASUREMENTS
Date and time (UT) of measurement
Position of measurement
Concentration of CO₂ in equilibrated air
Pressure of equilibration
Temperature of equilibration
Sea surface temperature
Sea surface salinity

Carbon Dioxide Information Analysis Center / Alex Kozyr (ako@ornl.gov)

CDIAC underway pCO2 Metadata Form

Investigator(s) Responsible for Measurements

Method Description

Cruise Information

CDIAC underway pCO₂ Metadata Form