2009
DOI: 10.1029/2008jd011297
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Eddy covariance observations of surface leakage during shallow subsurface CO2 releases

Abstract: We tested the ability of eddy covariance (EC) to detect, locate, and quantify surface CO2 flux leakage signals within a background ecosystem. For 10 days starting on 9 July 2007, and for 7 days starting on 3 August 2007, 0.1 (Release 1) and 0.3 (Release 2) t CO2 d−1, respectively, were released from a horizontal well ∼100 m in length and ∼2.5 m in depth located in an agricultural field in Bozeman, Montana. An EC station measured net CO2 flux (Fc) from 8 June 2006 to 4 September 2006 (mean and standard deviatio… Show more

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Cited by 54 publications
(50 citation statements)
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“…The net CO 2 flux from the area of the ZERT shallow-release facility (consisting of prairie grasses, alfalfa, and Canadian thistle) was measured every 30 minutes during the summers of 2006 and 2007, respectively, using the EC method (Lewicki et al, 2009). Approximately 17% and 15% of the data points were missing in the raw CO 2 flux data sets of 2006 and 2007 (excluding the gap between Days 182-186), respectively ( Figure 7).…”
Section: Resultsmentioning
confidence: 99%
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“…The net CO 2 flux from the area of the ZERT shallow-release facility (consisting of prairie grasses, alfalfa, and Canadian thistle) was measured every 30 minutes during the summers of 2006 and 2007, respectively, using the EC method (Lewicki et al, 2009). Approximately 17% and 15% of the data points were missing in the raw CO 2 flux data sets of 2006 and 2007 (excluding the gap between Days 182-186), respectively ( Figure 7).…”
Section: Resultsmentioning
confidence: 99%
“…An EC station was deployed in the field from 8 June 2006 to 4 September 2006, and from 28 May 2007 to 4 September 2007, to measure the average half-hour net CO 2 flux across the atmosphere-canopy interface. Additional information about the site, the release experiments, modeling, and flux measurements is available in (Lewicki et al, 2007;2009;Oldenburg et al, 2009) and will not be repeated here. Note that the raw measured fluxes were fed to the filter developed in this study without any pre-filtering or gap filling.…”
Section: Introductionmentioning
confidence: 99%
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