National Facilities

The Pyrenean Platform for Observation of the Atmosphere (P2OA) is a coupled plain–mountain instrumented platform in southwestern France for the monitoring of climate variables and the study of meteorological processes in a mountainous region.

The P2OA has been recently recommended for initial acceptance as the ACTRIS National Facility for Aerosol In Situ measurements, and the labelling process for Reactive Trace Gases In Situ measurements will be initiated in 2025.
A comprehensive description of the platform is presented in an article published in Atmospheric Measurement Techniques in October 2024: the instrumentation, the associated dataset, and a meteorological characterization the site. The scientific potential of the P2OA is illustrated through several examples of process studies.
Read the full article:
Lothon, M., Gheusi, F., Lohou, F., Pont, V., Soula, S., Jambert, C., Derrien, S., Bezombes, Y., Leclerc, E., Athier, G., Vial, A., Philibert, A., Campistron, B., Saïd, F., Sonke, J., Amestoy, J., Bargain, E., Bosser, P., Boulanger, D., Bret, G., Bodichon, R., Cabanas, L., Canut, G., Estrampes, J.-B., Gardrat, E., Gomez Kuri, Z., Gueffier, J., Guesdon, F., Lopez, M., Masson, O., Meslin, P.-Y., Meyerfeld, Y., Pascal, N., Pique, E., Ramonet, M., Starck, F., and Vidal, R.: The Pyrenean Platform for Observation of the Atmosphere: site, long-term dataset, and science, Atmos. Meas. Tech., 17, 6265–6300, https://doi.org/10.5194/amt-17-6265-2024, 2024.