Articles | Volume 9, issue 2
Atmos. Meas. Tech., 9, 509–524, 2016
https://doi.org/10.5194/amt-9-509-2016
Atmos. Meas. Tech., 9, 509–524, 2016
https://doi.org/10.5194/amt-9-509-2016

Research article 15 Feb 2016

Research article | 15 Feb 2016

A dual-inlet, single detector relaxed eddy accumulation system for long-term measurement of mercury flux

S. Osterwalder et al.

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Cited articles

Agnan, Y., Le Dantec, T., Moore, C. W., Edwards, G. C., and Obrist, D.: New constraints on terrestrial surface-atmosphere fluxes of gaseous elemental mercury using a global database, Environ. Sci. Technol., 50, 507–524, 2016.
Åkerblom, S., Bishop, K., Bjorn, E., Lambertsson, L., Eriksson, T., and Nilsson, M. B.: Significant interaction effects from sulfate deposition and climate on sulfur concentrations constitute major controls on methylmercury production in peatlands, Geochim. Cosmochim. Ac., 102, 1–11, 2013.
Alexandersson, H., Karlström, C., and Larsson-McCann, S.: Temperaturen och nederbörden i Sverige 1961–1990, The Swedish Meteorological and Hydrological Institute, Norrköping, Sweden, 1991.
Ammann, C.: On the applicability of Relaxed Eddy Accumulation and Common Methods for Measuring Trace Gas Fluxes, PhD Thesis, ETH Zürich, Zürich, 229 pp., 1999.
Ammann, C. and Meixner, F. X.: Stability dependence of the relaxed eddy accumulation coefficient for various scalar quantities, J. Geophys. Res., 107, 4071, https://doi.org/10.1029/2001JD000649, 2002.
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Short summary
Human activities have increased mercury (Hg) cycling between land and atmosphere. To define landscapes as sinks or sources of Hg we have developed an advanced REA system for long-term measurements of gaseous elemental Hg exchange. It was tested in two contrasting environments: above Basel, Switzerland, and a peatland in Sweden. Both landscapes showed net Hg emission (15 and 3 ng m−2 h−1, respectively). The novel system will help to advance our understanding of Hg exchange on an ecosystem scale.