Zoe, Loh; Leuning, Ray; Zegelin, Steve; Etheridge, David; Bai, Jia-Chi; Naylor, Travis A; Griffith, David W T (2015): Table 4. Trace gas concentrations from samples taken at Ginninderra [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.853833, Supplement to: Zoe, L et al. (2009): Testing Lagrangian atmospheric dispersion modelling to monitor CO2 and CH4 leakage from geosequestration. Atmospheric Environment, 43(16), 2602-2611, https://doi.org/10.1016/j.atmosenv.2009.01.053
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
We assess the performance of an inverse Lagrangian dispersion technique for its suitability to quantify leakages from geological storage of CO2. We find the technique is accurate ((QbLS/Q)=0.99, sigma=0.29) when strict meteorological filtering is applied to ensure that Monin–Obukhov Similarity Theory is valid for the periods analysed and when downwind enrichments in tracer gas concentration are 1% or more above background concentration. Because of their respective baseline atmospheric concentrations, this enrichment criterion is less onerous for CH4 than for CO2. Therefore for geologically sequestered gas reservoirs with a significant CH4 component, monitoring CH4 as a surrogate for CO2 leakage could be as much as 10 times more sensitive than monitoring CO2 alone. Additional recommendations for designing a robust atmospheric monitoring strategy for geosequestration include: continuous concentration data; exact inter-calibration of up- and downwind concentration measurements; use of an array of point concentration sensors to maximise the use of spatial information about the leakage plume; and precise isotope ratio measurement to confirm the source of any concentration elevations detected.
Project(s):
Funding:
Seventh Framework Programme (FP7), grant/award no. 265847: Sub-seabed CO2 Storage: Impact on Marine Ecosystems
Coverage:
Latitude: -35.300000 * Longitude: 149.120000
Date/Time Start: 2007-05-08T12:46:00 * Date/Time End: 2007-05-08T14:04:00
Minimum ELEVATION: 0.8 m a.s.l. * Maximum ELEVATION: 0.8 m a.s.l.
Event(s):
Ginninderra (CSIRO farm) * Latitude: -35.300000 * Longitude: 149.120000 * Location: Canberra, Australia
Comment:
Formula in abstract: Copy and paste this file into a MathML-aware program such as Mathematica or Maple
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<mml:math altimg="si7.gif" overflow="scroll" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mrow><mml:mrow><mml:mo>(</mml:mo><mml:mrow><mml:mo>〈</mml:mo><mml:mrow><mml:mrow><mml:msub><mml:mi>Q</mml:mi><mml:mrow><mml:mtext>bLS</mml:mtext></mml:mrow></mml:msub></mml:mrow><mml:mo>/</mml:mo><mml:mi>Q</mml:mi></mml:mrow><mml:mo>〉</mml:mo></mml:mrow><mml:mo>=</mml:mo><mml:mn>0.99</mml:mn><mml:mo>,</mml:mo><mml:mspace width="0.25em"/><mml:mi>σ</mml:mi><mml:mo>=</mml:mo><mml:mn>0.29</mml:mn></mml:mrow><mml:mo>)</mml:mo></mml:mrow></mml:mrow></mml:math>
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | ELEVATION | Elevation | m a.s.l. | Zoe, Loh | Geocode | |
| 2 | Sample code/label | Sample label | Zoe, Loh | UAN=Universal Analysis Number | ||
| 3 | DATE/TIME | Date/Time | Zoe, Loh | Geocode | ||
| 4 | Line | Line | Zoe, Loh | |||
| 5 | Carbon dioxide | CO2 | ppmv | Zoe, Loh | ||
| 6 | Methane | CH4 | ppmv | Zoe, Loh | ||
| 7 | δ13C, carbon dioxide, atmospheric | δ13C CO2 | ‰ PDB | Zoe, Loh | ||
| 8 | δ13C, methane, atmospheric | δ13C CH4 | ‰ PDB | Zoe, Loh |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
35 data points
Data
| 1 Elevation [m a.s.l.] | 2 Sample label | 3 Date/Time | 4 Line | 5 CO2 [ppmv] | 6 CH4 [ppmv] | 7 δ13C CO2 [‰ PDB] | 8 δ13C CH4 [‰ PDB] |
|---|---|---|---|---|---|---|---|
| 0.8 | 998790 | 2007-05-08T12:46 | A(1) | 392.1 | 2.743 | -8.49 | -43.00 |
| 0.8 | 998791 | 2007-05-08T13:01 | A(2) | 384.8 | 1.770 | -8.32 | -47.94 |
| 0.8 | 998792 | 2007-05-08T13:17 | A(1) | 388.9 | 2.511 | -8.38 | -43.88 |
| 0.8 | 998793 | 2007-05-08T13:30 | A(2) | 383.4 | 1.770 | -8.25 | -47.68 |
| 0.8 | 998795 | 2007-05-08T14:04 | A(1) | 388.6 | 2.471 | -8.37 | |
| 0.8 | 998794 | 2007-05-08T13:48 | A(2) | 383.5 | 1.764 | -8.26 | -47.50 |