Instrument: LI-COR LI-6262 Gas Analyzer

Acronym: LI-COR LI-6262
External Identifier: skos:broadMatch: http://vocab.nerc.ac.uk/collection/L05/current/382/

Description

The LI-6262 CO2/H2O Gas Analyzer measures CO2 flux in the environment. It was manufactured by LI-COR Biosciences Inc. (licor.com) from 1990 through 2005 and serial Numbers for this model have the prefix of IRG3-XXXX. The LI-6262 is a differential, non-dispersive, infrared (NDIR) gas analyzer. The CO2 and H2O measurements are based on the difference in absorption of infrared (IR) radiation passing through two gas sampling cells. The reference cell is used for a gas of known CO2 or H2O concentration, and the sample cell is used for a gas of unknown concentration. Infrared radiation is transmitted through both cell paths, and the output of the analyzer is proportional to the difference in absorption between the two (LI-6262 CO2/H2O Analyzer Operating and Service Manual, Publication Number 9003-59, March, 1996, pg 18).

Dataset NamePI-Supplied DescriptionPI-Supplied Name
All discrete TA/DIC samples from 2008-2012 collected from Bowdoin Buoy Mooring in the Lower Harpswell Sound, Casco Bay, Maine from 2011-2012Immediately after opening the sample bottle, a digital syringe withdrew a small amount of sample (0.5 mL), acidified it with 10% phosphoric acid and subsequently measured the evolved CO2 with a Li-Cor 6262 non-dispersive infrared gas analyzer (similar to the method described by Cai and Wang 1998). LI-COR LI-6262
Atmospheric CO2 Data from R/V Tangaroa cruise 61TG_3052 in the Southern Ocean in 1999 (SOIREE project)Licor 6262 analyser
Surface water CO2 concentrations from R/V Tangaroa cruise 61TG_3052 in the Southern Ocean in 1999 (SOIREE project)Licor 6262 analyser
Underway pCO2 from GO System from NOAA Ship Ronald H. Brown cruise RB-08-02 in the Southwest Atlantic sector of the Southern Ocean near South Georgia Island in 2008 (SO_GasEx project)Licor 6262 analyser
Underway shipboard flow-through data collected from continuously flowing uncontaminated seawater on several R/V Gulf Challenger cruises in Casco Bay, Gulf of Maine from 2008-2012After drying, the sample was pumped to a non-dispersive infrared gas analyzer (Li-cor, LI-6262 or LI-840), which measured the molar fraction of carbon dioxide (xCO2) of the sample stream. Li-cor LI-6262