AmeriFlux Network of Long-Term CO(sub 2)Flux Measurement Stations: Methodology and Intercomparability.

Hollinger, D. Y. ; Evans, R. S.

Technical Information Center Oak Ridge Tennessee

关键词: Carbon dioxide;    Air pollution monitoring;    Comparative evaluations;    Data collection;    Flux measurement;   

RP-ID  :  DE2005836564

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

A portable flux measurement system has been used within the AmeriFlux network of CO(sub 2) flux measurement stations to enhance the comparability of data collected across the network. No systematic biases were observed in a comparison between portable system and site H, LE, or CO(sub 2) flux values although there were biases observed between the portable system and site measurement of air temperature and PPFD. Analysis suggests that if values from two stations differ by greater than 26% for H, 35% for LE, and 32% for CO(sub 2) flux they are likely to be significant. Methods for improving the intercomparability of the network are also discussed.