South America

This site is under construction

This national facility is currently under construction and so is this page. The measurement container is currently finished and will be stationed for a time in Bremen on the NF Bremen to compare measurements of the two ACTRIS instruments.

The final place for this facility is not yet fix. The current planning aim at the city of Fortaleza, Brazil (3°S, 38°W). The rationale behind this choice is the ability to measure the difference between the Southern and Northern hemisphere Troposhere. This is because the chemical equator, the boundary separating the troposphere is migrating with the sun (Sun, 2023). The figure below shows the migration of the chemical equator (area between the red and the blue line) with the season.

A second rationale is the influence of air originating in the Amazonian region. The Amazonian region is a source of

The ACTRIS certification has not yet started.

References

Sun, X.; Palm, M.; Mueller, K.; Hachmeister, J. & Notholt, J. Determination of the chemical equator from GEOS-Chem model simulation: a focus on the tropical western Pacific region ATMOSPHERIC CHEMISTRY AND PHYSICS, 2023, 23, 7075-7090