Eddy covariance measurement of CO2, CH4, and H2O fluxes: Use
of a mobile tower and taking into account the changing fetch
L.A. Krivenok1,2, G.G. Suvorov1, V.K. Avilov3, A.A. Sirin1
1Institute of Forest Science, Russian Academy of Sciences (ILAN), Moscow region, Russia
2 A.M. Obukhov Institute of Atmospheric Physics Russian Academy of Sciences, Moscow, Russia
3 A.В N.В Severtsov Institute of Ecology and Evolution, Moscow, Russia, Moscow, Russia
Keywords: метод турбулентных пульсаций, торфяник, удельные потоки, метан, диоксид углерода, водяной пар, зона охвата, дальность зоны охвата, фильтрация данных, eddy covariance method, peatland, fluxes, methane, carbon dioxide, water vapor, footprint, fetch, data filtering
Abstract
A possibility of short-term (from 1–2 days) eddy covariance measurements with the use of mobile complex of equipment is shown as well as with fetch and wind direction as filtering parameters for flux separation from concrete site (the case of secondary waterlogged peatland in Moscow region). Obtained СО2, СH4, and H2O fluxes
allow to deduce diurnal dynamics in different meteorological conditions and
from different contiguous areas with one changes in the wind direction.
Application of the multiple-stage filtering leads to separate representative
amount of 30-minutes average values, which afterwards could be used for
analyzing of the dependences between fluxes and ecological parameters,
modeling, making estimates for longer periods, comparing with data obtained by
chamber method and are complement for the inventory of greenhouse gas sources
and sinks.
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