EGU General Assembly 2022
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

The ATTO Micrometeorological Intercomparison Experiment (ATMIX)

Luca Mortarini1,2, Nelson Dias3, Cleo Quaresma Dias4, Daiane Brondani5, Otavio Acevedo2, Antônio Manzi6, Pablo de Oliveira7, Anywhere Tsokankunku8, Fernando Rossato3, Alessandro Araújo9, Mathias Soergel8, and Carlos Alberto Nobre Quesada5
Luca Mortarini et al.
  • 1ISAC - CNR, Torino, Italy (
  • 2Federal University of Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
  • 3Department of Environmental Engineering, Federal University of Paraná, Brazil.
  • 4Department of Physics, Federal Institute of Pará, Belém, Brazil
  • 5INPA: Instituto de Pesquisas da Amazônia, Manaus, Brazil
  • 6Instituto Nacional de Pesquisas Espaciais (INPE), Cachoeira Paulista, Brazil
  • 7Federal University of Rio Grande do Norte, Natal, Brazil
  • 8Atmospheric Chemistry Department, Max Planck Institute for Chemistry, Mainz, Germany
  • 9Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA), Belém, Brazil

A central constituent of the ATTO project  is the deployment of an array of sonic anemometers to measure vertical profiles of means and second-order moments of the wind velocity vector. The two instruments used are the Campbell Scientific Instruments CSAT-3B and the Thies Ultrasonic Anemometer 3D. The accuracy of the vertical profiles of turbulent quantities critically depensds on an absence of bias between the measurement levels; however, dedicated intercomparisons of the sonic anemometers used in ATTO have not been previously performed.  The main objective of the experiment was to check how close the sonic anemometers designated to be installed respond to the same atmospheric conditions, and to develop confidence in interpreting the measured data. 

How to cite: Mortarini, L., Dias, N., Quaresma Dias, C., Brondani, D., Acevedo, O., Manzi, A., de Oliveira, P., Tsokankunku, A., Rossato, F., Araújo, A., Soergel, M., and Nobre Quesada, C. A.: The ATTO Micrometeorological Intercomparison Experiment (ATMIX), EGU General Assembly 2022, Vienna, Austria, 23–27 May 2022, EGU22-2592,, 2022.

Comments on the display material

to access the discussion