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Global Research Alliance N 2 O chamber methodology guidelines: Considerations for automated flux measurement
Author(s) -
Grace Peter R.,
Weerden Tony J.,
Rowlings David W.,
Scheer Clemens,
Brunk Christian,
Kiese Ralf,
ButterbachBahl Klaus,
Rees Robert M.,
Robertson G. Philip,
Skiba Ute M.
Publication year - 2020
Publication title -
journal of environmental quality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.888
H-Index - 171
eISSN - 1537-2537
pISSN - 0047-2425
DOI - 10.1002/jeq2.20124
Subject(s) - software deployment , greenhouse gas , environmental science , nitrous oxide , software , sampling (signal processing) , automation , systems engineering , range (aeronautics) , flux (metallurgy) , process engineering , computer science , engineering , aerospace engineering , detector , software engineering , materials science , operating system , chemistry , mechanical engineering , ecology , telecommunications , organic chemistry , biology , metallurgy
Nitrous oxide (N 2 O) emissions are highly episodic in response to nitrogen additions and changes in soil moisture. Automated gas sampling provides the necessary high temporal frequency to capture these emission events in real time, ensuring the development of accurate N 2 O inventories and effective mitigation strategies to reduce global warming. This paper outlines the design and operational considerations of automated chamber systems including chamber design and deployment, frequency of gas sampling, and options in terms of the analysis of gas samples. The basic hardware and software requirements for automated chambers are described, including the major challenges and obstacles in their implementation and operation in a wide range of environments. Detailed descriptions are provided of automated systems that have been deployed to assess the impacts of agronomy on the emissions of N 2 O and other significant greenhouse gases. This information will assist researchers across the world in the successful deployment and operation of automated N 2 O chamber systems.