Is flux divergence in the tower layer important in estimating annual NEE using eddy-covariance measurements?

Hong Bing Su, Hans Peter Schmid, C. S.B. Grimmond, Christoph S. Vogel, Peter S. Curtis

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations

Abstract

The characteristics of vertical flux divergence in the tower layer for examining annual net ecosystem exchange (NEE) was described using eddy-covariance measurements. The sign of NEE is define as the same of vertical flux, negative for a downward flux and positive for an upward flux. The long-term eddy-covariance measurements demonstrated that cumulative NEE measured at a higher level was consistently smaller in absolute magnetitude. The results show that the different choices of coordinate rotation and varying block average time length and sampling frequency led to changes in the magntitude but not the sign of verticla divergence of measured cumulative NEE.

Original languageEnglish
Pages25-28
Number of pages4
StatePublished - 2004
Externally publishedYes
Event26th Conference on Agricultural and Forest Meteorology - Vancouver, BC, Canada
Duration: 23 Aug 200426 Aug 2004

Conference

Conference26th Conference on Agricultural and Forest Meteorology
Country/TerritoryCanada
CityVancouver, BC
Period23/08/0426/08/04

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