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Semi-Parametric Models. Vanessa Stauch 1 Andrew Jarvis 2 Karsten Schulz 1 1 Helmholtz-Centre for Environmental Research (UFZ), Germany 2 Lancaster University, Environmental Science Department, UK. Eddy Flux Observations. eddy flux time series with missing data. Eddy Flux Observations.

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Semi parametric models

Semi-Parametric Models

Vanessa Stauch1

Andrew Jarvis2

Karsten Schulz1

1Helmholtz-Centre for Environmental Research (UFZ), Germany

2 Lancaster University, Environmental Science Department, UK


Eddy flux observations
Eddy Flux Observations

eddy flux time series with missing data


Eddy flux observations1
Eddy Flux Observations

need models

eddy flux time series with missing data


Semi parametric models1
Semi-Parametric Models

multidimensional splines


Hypersurface for f i t t
Hypersurface for f{I,T,t}

t

Stauch&Jarvis (2006)


Evaluation f sys

data

model

Evaluation Fsys

BETHY (Knorr&Kattge 2005) for Hainich

Leuning et al. (1995) model for a tropic site

Stauch&Jarvis (2006)


Semi parametric models2
Semi-Parametric Models

residual-characterisation


Noise characterisation
Noise Characterisation

Residuals of the hypersurface model for SPA (Williams et al. 1996) for an Oregon pine site


Noise characterisation1
Noise Characterisation

Residuals of the hypersurface model for SPA (Williams et al. 1996) for an Oregon pine site


Evaluation f noise

data

model

Evaluation Fnoise

Residuals of the hypersurface model for SPA (Williams et al. 1996) for an Oregon pine site



Gap filling 2 nce

data

model

Gap-Filling: 2. NCE

NCE for SPA (Williams et al. 1996) for the Oregon pine site



Evaluation
Evaluation

BETHY (Knorr & Kattge 2005) for Hainich

Leuning et al. (1995) model for a tropic site



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