NASONOV A. E.

PANIN G. N.

Tsukuba Repository

Analysis of experimental data of surface
fluxes in experiments FIFE, KUREX, TARTEX and
SADE. (Session 3: In-site Flux Observation
studies)
著者 PANIN G. N., NASONOV A. E.
journal or
publication title
Bulletin of the Terrestrial Environment
Research Center, the University of Tsukuba,
Proceedings of the International Workshop on
GAME-AAN/Radiation
volume 1
number 別冊
page range 50-50
year 2001-03
URL http://doi.org/10.15068/00147181
Analysis of experimental data of surface fluxes in experiments FIFE, 
KUREX, TARTEX and SADE. 
Panin G.N. and Nasonov A.E. (Institute of Water Problems, RAS) 
 
Abstract 
Modern measurement methods of the surface turbulent fluxes (STF) of heat, moisture and momentum 
in the near surface atmospheric layer by the eddy correlation method and their calculation, relay on the 
validity of the similarity theory of Monin-Obukhov, which requests stationarity and horizontal 
homogeneity. Experimental data taken at specially selected sites allowed to develop this concept. 
Recently performed experiments, purposely conducted in non-ideal conditions showed an 
underestimation of the STF values.  
Analysis of field experiments showed, that the statistical error δ  is often too small to close the 
observed gap in the sum of the four fluxes. Moreover, the gap is of a non-statistical nature. Almost 
independently on the type of field experiment, the sign of the gap shows too small turbulent fluxes.  
This gap indicates the existence of a systematic error ∆  besides the statistical error δ  In order to 
account for this systematic error the basic formulation of the one-dimensional surface energy balance is 
given in form: 
 
R E H G R STF Gn
HH HH
n
HH− − − = − − =λ δ∆ ±    
 
The observed amount of imbalance was connected with the degree of heterogeneity of the landscape 
around the energy balance station. Results from the field experiments FIFE, KUREX, TARTEX and 
SADE, point to a relation between the underestimation of the turbulent fluxes and the terrain 
inhomogeneity. To systematize the correction for this effect a scheme is suggested.  
This scheme might prove to be useful for the design of new validation experiments in non-ideal terrain. 
 


Analysis of experimental data of surface fluxes in experiments FIFE, KUREX, TARTEX and SADE. (Session 3: In-site Flux Observation studies)

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