Guyaflux Observatory, French Guyana (GUY)

Guyaflux Observatory, French Guyana (GUY)


Lat: 5.2817°N, Lon: -52.9122°W, Alt: 40m above see level
Sampling heights: 55 m above ground level


The Guyaflux research facility is located in the Paracou forest, municipality of Sinnamary, in French Guiana. Its main equipment is a 55 meter high tower that measures gas exchanges between the rainforest and the atmosphere in real time. Its scientific objectives are as follows:

  • Characterize the intensity of CO2 and H2O fluxes, their temporal variability, and their contribution to global cycles
  • Specify the contribution of the tropical rainforest ecosystem in French Guiana to the biospheric carbon sink
  • Specify the impact of environmental constraints on the carbon balance
  • Analyze the contribution of the different compartments (soil, understory and canopy) of the ecosystem to the storage and fluxes of water and carbon
  • Model the primary productivity of these ecosystems, by linking carbon flows and tree growth
  • Specify the interactions between the cycle of water, carbon and that of the major mineral elements (nitrogen, phosphorus)

Measured species

In situ and continuous : CO2, CH4

CO2 and CH4 fluxes by eddy covariance


B.Burban, M. Lopez, M. Ramonet


Site Web

Guyaflux – UMR EcoFoG

Relevant publications

Bréchet, L. M., W. Daniel, C. Stahl, B. Burban, J.-Y. Goret, R. L. Salomόn, and I. A. Janssens (2021), Simultaneous tree stem and soil greenhouse gas (CO2, CH4, N2O) flux measurements: a novel design for continuous monitoring towards improving flux estimates and temporal resolution, New Phytologist, 230(6), 2487-2500, doi:

Molina, L., G. Broquet, P. Imbach, F. Chevallier, B. Poulter, D. Bonal, B. Burban, M. Ramonet, L. V. Gatti, S. C. Wofsy, J. W. Munger, E. Dlugokencky, and P. Ciais (2015), On the ability of a global atmospheric inversion to constrain variations of CO2 fluxes over Amazonia, Atmospheric Chemistry and Physics, 15(14), 8423-8438, doi:10.5194/acp-15-8423-2015.

The gallery was not found! The gallery was not found!