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The impact of averaging period on eddy fluxes observed at ChinaFLUX sites

, : The impact of averaging period on eddy fluxes observed at ChinaFLUX sites. Agricultural and Forest Meteorology 137(3-4): 188-193

In this paper, the 'ensemble block' time average procedure and the Ogive function are applied to three ChinaFLUX sites to determine the low-frequency contribution to eddy fluxes. It is found that both methods give similar results. They show that 30 min flux-averaging periods are sufficient to capture all flux scales over a wheat field, but 60 min or longer is necessary over forests. Our results show that the optimal averaging period is a site-specific parameter.


DOI: 10.1016/j.agrformet.2006.02.012

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