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Chacaltaya-Bolivia (5200 m) : The World’s highest monitoring station for measuring atmospheric composition changes

par KRINNER Gerhard - 30 janvier 2012 - ( maj : 13 mars 2012 )

LGGE scientists are participating to an international initiative for establishing long-term observations at newly established high altitude Chacaltaya station (5200 MSL) in Bolivia, which will for the first time deliver information about atmospheric composition from Southern Hemisphere tropical free troposphere on seasonal to annual basis.

A number of research groups from France (LGGE, LSCE, and LaMP), Italy (ISAC), Germany (IFT), Sweden (SU) and Switzerland (PSI) have joined their efforts to support the initiative led by the Universidad Mayor de San Andres (UMSA-LFA) to install at Chacaltaya a unique infrastructure for documenting the variability of the atmospheric composition, an information that is largely unknown in this region due to the lack of observation. Measurements at the station started in December 2011 and include monitoring of gases (CO2, CO and O3), characterization of particle properties (absorption and scattering coefficients, number and size, chemical composition, and small ions) as well as radiation and meteorology. Measurements started in December 2011 and the station is part of the WMO-GAW network. The whole operation is supported by the IRD office in Bolivia. Please clic here to know more about the station and see some pictures. And in the meantime, measurements at the Nepal Climate Observatory-Pyramid continue…

Contact : P. Laj

A 180° view of the Chacaltaya area. You can see the Altiplano with LaPaz/El Alto in the background.

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tutellesCNRSUniversité Joseph Fourier