Description of filled NEE data for Willow Creek Tower, WI Last updated: September 2006, Bruce Cook Filename: lcreek_fillednee_YYYY Notes: Data has been screened for low u* (<0.05 m/s) Missing or invalid data is reported as -999. Time is recorded at the beginning of average period. The average interval is 30 minutes. Local standard time (CST) is -6 UTC Column Name Description Unit 1 Year Year Year 2 DOY Day of Year Day 3 LST Local Standard Time HHMM 4 fjday Fractional Julian Day 5 S Entropy kj/mol/K 6 H Enthalpy kj/mol 7 G Gibbs energy barrier kj/mol 8 SoilT Soil temperature - 5cm/2in degrees C 9 Resp Modeled ecosystem respiration umol/m2 s 10 b0 Intercept of big leaf model umol/m2 s 11 b1 Quantum yield for big leaf unitless 12 b2 Half-saturation PAR umol/m2 s 13 PAR PAR above canopy umol/m2 s 14 Psyn Modeled gross photosynthesis umol/m2 s 15 obs_NEE original observed NEE umol/m2 s 16 mod_NEE modeled NEE = Resp-Psyn umol/m2 s 17 fill_NEE filled good NEE umol/m2 s