beflux > Best-Estimate Radiative FluxVAP Type(s) > Baseline

Best estimate of downwelling diffuse SW (top plot) and the differences between best estimate and instrument data (bottom plot) in the year 2000. In the top plot, the red curves mark the instances when SIRS C1 data were not used in the best estimate calculation. In the bottom plot, the red, blue, and green colors represent the differences of the best estimate value and the SIRS C1, E13, and BRS data, respectively.

The Best-Estimate Surface Radiative Flux (BEFLUX) VAP processes data from three Southern Great Plains Central Facility radiometer systems when all are available. Before 2001, this VAP used corrected diffuse SW from the DiffCorr1Dutt VAP as input. The 1-minute input data are compared to decide which to use for averaging to get the best estimate. The output data are saved in two NetCDF files containing the best estimate values, QC flags, and the difference fields.
For more details, see Best Estimate Radiation Flux Value-Added Procedure: Algorithm Operational Details and Explanations.


  • Fixed
  • AMF1
  • AMF2
  • AMF3


brs: Broadband Radiometer Station

sirs: Solar and Infrared Radiation Station for Downwelling and Upwelling Radiation

Active Locations

Facility Name Start Date
Central Facility, Lamont, OK 1995-05-19


Creekmore TN, E Joseph, CN Long, and S Li. 2014. "Quantifying aerosol direct effects from broadband irradiance and spectral aerosol optical depth observations." Journal of Geophysical Research: Atmospheres, 119(9), 10.1002/2013jd021217.

Jensen M, S Giangrande, and P Kollias. 2014. The Mid-latitude Continental Convective Clouds (MC3E) Experiment Final Campaign Report. Ed. by Robert Stafford, U.S. DOE, Office of Science, Office of Biological and Environmental Research. DOE/SC-ARM-14-012. 10.2172/1192141.

Phillips TJ and SA Klein. 2014. "Land-atmosphere coupling manifested in warm-season observations on the U.S. southern great plains." Journal of Geophysical Research: Atmospheres, 119(2), 10.1002/2013jd020492.
Research Highlight


Reda I, J Zeng, J Scheuch, L Hanssen, B Wilthan, D Myers, and T Stoffel. 2012. "An absolute cavity pyrgeometer to measure the absolute outdoor longwave irradiance with traceability to international system of units, SI." Journal of Atmospheric and Solar-Terrestrial Physics, 77(March 2012), 10.1016/j.jastp.2011.12.011.

Oreopoulos L, E Mlawer, J Delamere, T Shippert, J Cole, B Fomin, M Iacono, Z Jin, J Li, J Manners, P Raisanen, F Rose, Y Zhang, MJ Wilson, and WB Rossow. 2012. "The Continual Intercomparison of Radiation Codes: Results from Phase I." Journal of Geophysical Research: Atmospheres, 117(D6), 10.1029/2011jd016821.
Research Highlight

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Damao Zhang
Pacific Northwest National Laboratory

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