Determination of averaging period parameter and its effects analysis for eddy covariance measurements

被引:2
作者
SUN Xiaomin
Graduate School of the Chinese Academy of Sciences
机构
关键词
eddy covariance; various surface conditions; averaging period; parameter; ChinaFLUX;
D O I
暂无
中图分类号
P412.1 [地面气象观测];
学科分类号
0706 ; 070601 ;
摘要
It is more and more popular to estimate the exchange of water vapor, heat and CO2 fluxes between the land surface and the atmosphere using the eddy covariance technique. To get believable fluxes, it is necessary to correct the observations based on the different surface conditions and to determine relevant techinical parameters. The raw 10 Hz eddy covariance data observed in the Yucheng and Changbai Mountains stations were recalculated by various averaging periods (from 1 to 720 min) respectively, and the recalculated results were compared with the results calculated by the averaging period of 30 mins. Meanwhile, the distinctions of fluxes calculated by different averaging periods were analyzed. The continuous 15 days observations over wheat fields in the Yucheng station were mainly analyzed. The results are shown that: (i) In the Yucheng station, compared with the observations by 30 min, when the averaging period changes from 10 to 60 min, the variations of the eddy-covariance estimates of fluxes were l
引用
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页码:33 / 41
页数:9
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