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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 4 — Feb. 1, 2008
  • pp: 548–555

Testing carbon sequestration site monitor instruments using a controlled carbon dioxide release facility

Seth D. Humphries, Amin R. Nehrir, Charlie J. Keith, Kevin S. Repasky, Laura M. Dobeck, John L. Carlsten, and Lee H. Spangler  »View Author Affiliations


Applied Optics, Vol. 47, Issue 4, pp. 548-555 (2008)
http://dx.doi.org/10.1364/AO.47.000548


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Abstract

Two laser-based instruments for carbon sequestration site monitoring have been developed and tested at a controlled carbon dioxide ( CO 2 ) release facility. The first instrument uses a temperature tunable distributed feedback (DFB) diode laser capable of accessing the 2.0027 2.0042 μ m spectral region that contains three CO 2 absorption lines and is used for aboveground atmospheric CO 2 concentration measurements. The second instrument also uses a temperature tunable DFB diode laser capable of accessing the 2.0032 2.0055 μ m spectral region that contains five CO 2 absorption lines for underground CO 2 soil gas concentration measurements. The performance of these instruments for carbon sequestration site monitoring was studied using a newly developed controlled CO 2 release facility. A 0.3 ton CO 2 / day injection experiment was performed from 3–10 August 2007. The aboveground differential absorption instrument measured an average atmospheric CO 2 concentration of 618 parts per million (ppm) over the CO 2 injection site compared with an average background atmospheric CO 2 concentration of 448   ppm demonstrating this instrument's capability for carbon sequestration site monitoring. The underground differential absorption instrument measured a CO 2 soil gas concentration of 100,000 ppm during the CO 2 injection, a factor of 25 greater than the measured background CO 2 soil gas concentration of 4000 ppm demonstrating this instrument's capability for carbon sequestration site monitoring

© 2008 Optical Society of America

OCIS Codes
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(300.6260) Spectroscopy : Spectroscopy, diode lasers
(280.4788) Remote sensing and sensors : Optical sensing and sensors
(010.0280) Atmospheric and oceanic optics : Remote sensing and sensors

ToC Category:
Remote Sensing and Sensors

History
Original Manuscript: September 12, 2007
Revised Manuscript: November 20, 2007
Manuscript Accepted: December 10, 2007
Published: January 25, 2008

Citation
Seth D. Humphries, Amin R. Nehrir, Charlie J. Keith, Kevin S. Repasky, Laura M. Dobeck, John L. Carlsten, and Lee H. Spangler, "Testing carbon sequestration site monitor instruments using a controlled carbon dioxide release facility," Appl. Opt. 47, 548-555 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-4-548

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