pgsiso > Precision Gas System Isotope AnalyzerInstrument Type(s) > Baseline

The precision gas system isotope analyzer (PGSISO) is an atmospheric trace gas monitoring system, measuring continuous CO2, 12CO2, 13CO2, CH4, CO, N2O, and H2O at tower sample heights of 2m, 4m, 25m, and 60m above ground level. It is a combination of several systems in series: (1) gas processing components that pressurize and prevent liquid water into the sample stream, as well as for coordinating automated measurements of calibration cylinders, and (2) the Spectronus FTIR spectrometer developed by Ecotech Pty Ltd.


  • Fixed
  • AMF1
  • AMF2
  • AMF3

Active Locations

Facility Name Start Date
Central Facility, Lamont, OK 2015-09-23


Long D, Z Reed, A Fleisher, J Mendonca, S Roche, and J Hodges. 2020. "High Accuracy Nearā€infrared Carbon Dioxide Intensity Measurements to Support Remote Sensing." Geophysical Research Letters, 47(5), e2019GL086344, 10.1029/2019GL086344.


Biraud S and K Reichl. 2019. Precision Gas System Isotope Analyzer (PGSISO) Instrument Handbook. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-TR-237. 10.2172/1581174.


Biraud S, M Torn, C Miller, A Sedlacek, C Sweeney, S Wofsy, G de Boer, M Shupe, and C Kuang. 2015. ARM-ACME V: ARM Airborne Carbon Measurements V on the North Slope of Alaska Science and Implementation Plan. Ed. by Robert Stafford, DOE ARM Climate Research Facility. DOE/SC-ARM-15-032.

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