Micrometeorological aspects of the monoterpenes emission in a forest at central Amazon

Sarah Batalha, Jeong-Hoo Park, Eliane Alves, Raoni Santana, Roger Seco, Jose Oscar Vega Bustillos, James Smith, Alex Guenther, Julio Tóta


This research aimed to present results about the mixing ratio and flux of monoterpenes at a forest region of the Brazilian Amazon. It was used micrometeorology instrumentation (using a Sonic Anemometer) and analytical chemistry by a Proton Transfer Reaction - Time of Flight - Mass Spectrometer, PTR-ToF-MS. The calibration of the spectrometer was performed regularly using a gravimetric mix of standard gas containing different masses of volatile organic compounds. The results showed average mixing ration of monoterpenes of 0.185 ppbv and maximum emission flux of 1.495 mg m-2 h-1. It was concluded that this region presented a significant emission of monoterpenes in relation to another tropical forest in central Amazonia, evidencing the needing to improve studies about atmospheric chemistry in different forests of the Amazon Basin.


Atmospheric Chemistry; Eddy Covariance; BVOCs


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DOI: http://dx.doi.org/10.5902/2179460X30729


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