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Standardisation of chamber technique for CO2, N2O and CH4 fluxes measurements from terrestrial ecosystems

Journal article
Authors M. Pavelka
M. Acosta
R. Kiese
N. Altimir
C. Brümmer
P Crill
E. Darenova
R Fuß
B. Gielen
A. Graf
Leif Klemedtsson
A Lohila
B. Longdoz
A. Lindroth
M. Nilsson
S. M. Jiménez
L. Merbold
L. Montagnani
M. Peichl
M. Pihlatie
J. Pumpanen
P. S. Ortiz
H. Silvennoinen
U. Skiba
P. Vestin
Per Weslien
D. Janous
W. Kutsch
Published in International Agrophysics
Volume 32
Issue 4
Pages 569-587
ISSN 0236-8722
Publication year 2018
Published at Department of Earth Sciences
Pages 569-587
Language en
Keywords ICOS, protocol, greenhouse gas, ecosystem, automated chamber system, manual chamber system
Subject categories Meteorology and Atmospheric Sciences, Climate Research

Abstract

Chamber measurements of trace gas fluxes between the land surface and the atmosphere have been conducted for almost a century. Different chamber techniques, including static and dynamic, have been used with varying degrees of success in estimating greenhouse gases (CO2, CH4, N2O) fluxes. However, all of these have certain disadvantages which have either prevented them from providing an adequate estimate of greenhouse gas exchange or restricted them to be used under limited conditions. Generally, chamber methods are relatively low in cost and simple to operate. In combination with the appropriate sample allocations, chamber methods are adaptable for a wide variety of studies from local to global spatial scales, and they are particularly well suited for in situ and laboratory-based studies. Consequently, chamber measurements will play an important role in the portfolio of the Pan-European long-term research infrastructure Integrated Carbon Observation System. The respective working group of the Integrated Carbon Observation System Ecosystem Monitoring Station Assembly has decided to ascertain standards and quality checks for automated and manual chamber systems instead of defining one or several standard systems provided by commercial manufacturers in order to define minimum requirements for chamber measurements. The defined requirements and recommendations related to chamber measurements are described here.

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