Description of filled NEE data for Sylvania Wilderness / Helen Lake Tower Last updated: 14 May 2003, Ankur Desai Filename: Sylvaniayy_fillednee.txt Notes: 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 FORTRAN Format code is: (i4.4,i4,i5.4,f8.3,13f12.3) Column Name Description Unit Range/Notes 1 Year Year Year 2000-3000 2 DOY Day of Year Day 1-366 3 LST Local Standard Time HHMM 0000-2330 4 F_day Day and Fraction Day 1.000-365.979 5 S Entropy kj/mol/K 6 H Enthlaphy 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 o_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