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Pressure pumping of carbon dioxide from soilAuthor(s): E. S. Takle; J. R. Brandle; R. A. Schmidt; R. Garcia; I. V. Litvina; G. Doyle; X. Zhou; Q. Hou; C. W. Rice; W. J. Massman
Source: In: 24th Conference on Agricultural and Forest Meteorology; 14th Conference on Biometeorology and Aerobiology; 2000 August 14-18; Davis, CA. Boston, MA: American Meteorological Society. p. 190-191.
Publication Series: Paper (invited, offered, keynote)
Station: Rocky Mountain Research Station
PDF: Download Publication (512.89 KB)
DescriptionRecent interest in atmospheric increases in carbon dioxide have heightened the need for improved accuracy in measurements of fluxes of carbon dioxide from soils. Diffusional movement has long been considered the dominant process by which trace gases move from the subsurface source to the surface, although there has been some indication that atmospheric pressure fluctuations also might play a role (Clark and Waddington, 1991 , and Massman et al, 1997). A related question centers on what possible influence the C02 measurement chamber might have on the microscale pressure field at the measurement site. We have measured carbon dioxide fluxes and atmospheric pressure fluctuations concurrently at the soil surface under conditions of natural and artificial pressure pumping with the intent of providing some answers to these questions.
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CitationTakle, E. S.; Brandle, J. R.; Schmidt, R. A.; Garcia, R.; Litvina, I. V.; Doyle, G.; Zhou, X.; Hou, Q.; Rice, C. W.; Massman, W. J. 2000. Pressure pumping of carbon dioxide from soil. In: 24th Conference on Agricultural and Forest Meteorology; 14th Conference on Biometeorology and Aerobiology; 2000 August 14-18; Davis, CA. Boston, MA: American Meteorological Society. p. 190-191.
Keywordspressure pumping, carbon dioxide, soil
- High-frequency pressure variations in the vicinity of a surface CO2 flux chamber
- Influence of high-frequency ambient pressure pumping on carbon dioxide efflux from soil
- Biases in open-path carbon dioxide flux measurements: Roles of instrument surface heat exchange and analyzer temperature sensitivity
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