EC_Processor page

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planar_fit_coeffs.sas	calculates planar fit coefficients from online flux data
ECP_v2.2.sas	reprocesses 10Hz raw data (TOA5 format)
combine_clean.sas	combines online fluxes, reprocessed fluxes and micrometeorological data to a master file
ustar_crit_determination.sas	calculates u* thresholds at monthly and annual timestep
gapfill.sas	gapfills the master file using regression models at user-specified timestep, and user-specified temperature, moisture and light response functions (32 model variants available)

Earlier version: a Windows executable program that does the same as ECP_v2.sas, but does not evaluate flux stationarity and output variances for u & w for later calculation of integral turbulence characteristics.

What is it?

* EC_Processor is a program designed for reprocessing eddy covariance flux data. It calculates 30-minute mean eddy covariance fluxes of carbon, water and energy. It was designed for a system consisting of LI-7500 IRGA, CSAT-3 sonic anemometer and CR5000 data logger. The default input file structure is comma-delimited ASCII format as provided by Campbell Scientific's PC9000 or Loggernet 3. The downloadable program is an independent executable program for Windows operating system. Setup instructions are given in the ReadMe file. EC_Processor allows single-file or batch processing. The source code (in Visual C++) is available upon request and can be modified to accommodate other data sources.
* EC_Processor can calculate turbulent fluxes in 2-axis rotation or planar fit coordinate systems.
* The program was developed for the USCCC (US-China Carbon Consortium) collaborators, but is available for anyone if the source is acknowledged. The use of EC-Processor for profit is prohibited.

The original EC_Processor was developed by:
Asko Noormets (designed the program and wrote original SAS scripts), University of Toledo
Rui Zhou (converted the SAS code to C++ and added GUI), University of Toledo
Jiquan Chen (PI of ChEAS managed forest cluster study and of USCCC), University of Toledo
David Billesbach (advice constructing the program, cross-comparison of results), University of Nebraska Lincoln

Downloads (last updated 11.21.2005):

1. ReadMe (rtf file, 102 KB)

2. EC_Processor package (zip file, 930 KB)

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August 1, 2008

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