Evaluation of CO2, water vapor, and their turbulent exchange rates with an airborne open-path infrared gas analyzer

Werner K. Graber; Markus Furger

doi:10.1117/12.364176

16 September 1999 Evaluation of CO₂, water vapor, and their turbulent exchange rates with an airborne open-path infrared gas analyzer

Werner K. Graber, Markus Furger

Author Affiliations +

Proceedings Volume 3821, Environmental Sensing and Applications; (1999) https://doi.org/10.1117/12.364176
Event: Industrial Lasers and Inspection (EUROPTO Series), 1999, Munich, Germany

Abstract

The methodology of evaluating the exchange rates of CO₂ and water vapor between vegetation and the atmosphere is presented. The two gases are measured with a short open path, fast responding infrared absorption gas analyzer. To determine the turbulent fluxes due to large scale eddies, high resolution wind measurements are obtained with a five-hole pressure sonde and a fast GPS (Global Positioning System) receiver. Measurements taken over Monte Bodone near Trento, Italy, a plateau in the Alps, are evaluated. The CO₂ and water vapor budgets for the air layer above a few square kilometers were calculated and exchange rates for H₂O and CO₂ with the vegetation were estimated.

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Werner K. Graber and Markus Furger "Evaluation of CO₂, water vapor, and their turbulent exchange rates with an airborne open-path infrared gas analyzer", Proc. SPIE 3821, Environmental Sensing and Applications, (16 September 1999); https://doi.org/10.1117/12.364176

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