EasyFlux PC Eddy-Covariance Post-Processing PC Software

Computer program that computes fully corrected fluxes of CO2, latent heat, and sensible heat

EasyFlux® PC is a free computer program that processes high frequency time series data, collected using a Campbell Scientific eddy-covariance flux system, into fluxes following community accepted practices. Fully corrected fluxes of CO2, latent heat (H2O), sensible heat, and momentum are available in generic, AmeriFlux, and GHG-Europe ASCII formats. 

Category:

Provides fully corrected outputs of CO2 flux, latent heat flux, and sensible heat flux at a user-defined interval (e.g., 30 minutes). Also provides many other variables of atmospheric properties, instrument diagnostics, and intermediate corrections. 

Default processing: 

    • Despike and filter data using sonic anemometer and gas analyzer diagnostic codes, signal strengths, and measurements output range threshold. 
    • Apply coordinate rotation with an option to use the double rotation method (Tanner and Thurtell, 1969) or planar fit method (Wilczak et al., 2001). 
    • Lag CO2 and H2O measurement against sonic wind measurement for maximization of CO2 and H2O flux (Horst and Lenschow, 2009; Foken et al., 2012). 
    • Apply low frequency correction following Moncrieff et al., 2004. 
    • Apply high frequency corrections following Moncrieff et al., 1997; Massman, 2000, 20001; or Horst, 1997. 
    • Correct sonic temperature for the effect of humidity following van Dijk et al., 2004. 
    • Apply correction for air density fluctuation using Webb et al., 1980. 
    • QA/QC data quality checks following Foken, 2003. 

Benefits and Features 

    • Intuitive and easy to use; begin processing data in under a minute 
    • Uses community tested and reviewed, open source software 
    • Supports native Campbell Scientific TOB1 file format collected from an open-path eddy-covariance system (IRGASON or EC150 with CSAT3) 
    • Available at no charge 

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