True eddy accumulation – Part 2: Theory and experiment of the short-time eddy accumulation method

True eddy accumulation – Part 2: Theory and experiment of the short-time eddy accumulation method

A new variant of the eddy accumulation method for measuring atmospheric exchange is derived, and a prototype sampler is evaluated. The new method, termed short-time eddy accumulation (STEA), overcomes the requirement of fixed accumulation intervals in the true eddy accumulation method (TEA) and enab...

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Veröffentlicht in:Atmospheric measurement techniques 2023-01, Vol.16 (1), p.41-55
Hauptverfasser: Emad, Anas, Siebicke, Lukas
Format: Artikel
Sprache:eng
Schlagworte:
Accumulation
Agricultural land
Carbon dioxide
Carbon dioxide flux
Continuous flow
Eddy covariance
Fluxes
Gases
Intervals
Measurement methods
Methods
Prototypes
Random variables
Sampling
Velocity
Vortices
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Zusammenfassung:A new variant of the eddy accumulation method for measuring atmospheric exchange is derived, and a prototype sampler is evaluated. The new method, termed short-time eddy accumulation (STEA), overcomes the requirement of fixed accumulation intervals in the true eddy accumulation method (TEA) and enables the sampling system to run in a continuous flow-through mode. STEA enables adaptive time-varying accumulation intervals, which improves the system's dynamic range and brings many advantages to flux measurement and calculation.
ISSN:1867-8548
1867-1381
1867-8548
DOI:10.5194/amt-16-41-2023