Advances in Earth Science ›› 2010, Vol. 25 ›› Issue (11): 1217-1227.

• Articles •

### Intercomparison of Sensible Heat Flux Measurement based on Eddy Covariance and Small Aperture Scintillometer above the Forest Canopy

Wang Jianlin 1,2, Wen Xuefa 1*, Sun Xiaomin 1, Wang Qiufeng 1, Wang Huimin 1,Liu Yunfen 1

1. 1.Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; 
2.Qingdao Agricultural University, Qingdao 266109, China
• Received:2010-03-16 Revised:2010-07-14 Online:2010-11-10 Published:2010-11-10

Wang Jianlin, Wen Xuefa, Sun Xiaomin, Wang Qiufeng, Wang Huimin,Liu Yunfen. Intercomparison of Sensible Heat Flux Measurement based on Eddy Covariance and Small Aperture Scintillometer above the Forest Canopy[J]. Advances in Earth Science, 2010, 25(11): 1217-1227.

Eddy covariance and scintillometer techniques are effective ways to measure the sensible heat flux at local and regional scales. As part of ChinaFLUX, continuous sensible heat flux was measured by  using the Eddy Covariance (EC) technique at two and three canopy heights of a subtropical pinus plantation on the red earth hilly region in southeastern China. Meanwhile, continuous sensible heat flux was also measured by Small Aperture Scintillometer (SAS), which was installed in the direction of east by south, with  about 70m distance between the laser emitter and receiver. There were consistence  between the EC systems at two and three canopy heights and SAS system. At the diurnal and seasonal scales, sensible heat flux by SAS was higher than that by the EC systems at two and three canopy heights. However, sensible heat flux by SAS was lower than that by the EC systems at two and three canopy heights. There showed the strongest correlation in the direction of  from south to south by west and from north by east to east by north, which were perpendicular to the dominating  wind direction. During the daytime, the correlation of sensible heat flux between the EC systems at two and three canopy heights and SAS system were higher than that during the nighttime. The difference of sensible heat flux between the EC systems at two and three canopy heights and SAS system were related with the  disparity  in their footprint and disadvantages. 

 No related articles found!
Viewed
Full text

Abstract