Measurements of landscape-scale CO 2 fluxes at two ameriflux sites using a new vertical profiling method

Kristen Schulz, Michael L. Jensen, Ben B. Balsley, Kenneth Davis, John W. Birks

Research output: Contribution to journalConference article

Abstract

CO 2 is the most important greenhouse gas and its modulation by the biosphere is of fundamental importance to our understanding of global climate change. A new technique for vertical profiling of CO 2 and meteorological parameters from the ground to 3 km was proposed. Vertical profiling of CO 2 mixing ratios allowed estimates of landscape-scale fluxes characteristic of ≈ 100 sq km of an ecosystem. The method made use of a powered parachute as a platform and a new Tedlar™ bag air sampling technique. Air samples were returned to the ground where measurements of CO 2 mixing ratios were made with high precision (≤ 0.1%) and accuracy (≤ 0.1%) using a conventional CO 2 analyzer. Laboratory studies that characterize the accuracy and precision of the bag sampling technique as well as diffusion through the Tedlar™ bag wall were described. The technique was in field studies near two Ameriflux sites and the data used to calculate fluxes. This is an abstract of a paper originally presented at the 225th ACS National Meeting (New Orleans, LA 3/23-27/2003).

Original languageEnglish (US)
Pages (from-to)690-691
Number of pages2
JournalACS, Division of Environmental Chemistry - Preprints of Extended Abstracts
Volume43
Issue number1
StatePublished - Dec 1 2003
Event225th ACS National Meeting - New Orleans, LA, United States
Duration: Mar 23 2003Mar 27 2003

All Science Journal Classification (ASJC) codes

  • Energy(all)

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