Measurements of landscape-scale fluxes of carbon dioxide in the Peruvian Amazon by vertical profiling through the atmospheric boundary layer

Laura R. Kuck, Tyrell Smith, Ben B. Balsley, Detlev Helmig, Thomas J. Conway, Pieter P. Tans, Kenneth Davis, Michael L. Jensen, John A. Bognar, Rosaura Vazquez Arrieta, Rodolfo Rodriquez, John W. Birks

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Abstract

Vertical profiles of carbon dioxide were measured within and above the atmospheric boundary layer at a tropical forest site in the Peruvian Amazon during July 1996 using a tethered balloon sampling platform. Flask samples were collected within and above the mixed layer and analyzed off-site for carbon dioxide by nondispersive infrared spectrophotometry. Ozone and temperature vertical profiles were used to determine the boundary layer heights and growth rates. The mean values for methane, carbon monoxide, hydrogen, carbon-13, and oxygen-18 ratios were determined within and above the mixed layer. Daytime carbon dioxide flux values were calculated using the budget method. Nocturnal fluxes were estimated by integrating the carbon dioxide mixing ratios as a function of height from the ground to the inversion layer and dividing the total accumulated carbon dioxide by the time since sunset. The daytime carbon dioxide flux of -13 ± 2 μmol C m-2 s-1 and the nocturnal flux of +5.0 ± 1.0 μmol C m-2 s-1 are in good agreement with previous studies in the Brazilian Amazon.

Original languageEnglish (US)
Article number2000JD900105
Pages (from-to)22137-22146
Number of pages10
JournalJournal of Geophysical Research Atmospheres
Volume105
Issue numberD17
DOIs
StatePublished - Sep 16 2000

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Forestry
  • Oceanography
  • Aquatic Science
  • Ecology
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

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    Kuck, L. R., Smith, T., Balsley, B. B., Helmig, D., Conway, T. J., Tans, P. P., Davis, K., Jensen, M. L., Bognar, J. A., Arrieta, R. V., Rodriquez, R., & Birks, J. W. (2000). Measurements of landscape-scale fluxes of carbon dioxide in the Peruvian Amazon by vertical profiling through the atmospheric boundary layer. Journal of Geophysical Research Atmospheres, 105(D17), 22137-22146. [2000JD900105]. https://doi.org/10.1029/2000JD900105