Description of micrometeorology data for Sylvania Wilderness / Helen Lake Tower Last updated: 8 July 2003, Ankur Desai Filename: Sylvaniayy_met.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,i3,i3,f5.1,i4,f6.3,59f12.3) For 2003 format code is: (i4.4,i3,i3,f5.1,i4,f6.3,61f12.3) Column Name Description Unit Range/Notes 1 Year Year Year 2000-3000 2 Month Month Month 1-12 3 DOM Day of Month Day 1-31 4 LST Local Standard Time Hour 0.0-23.5 5 DOY Day of Year Day 1-366 6 F_day Fraction of Day 0-1 7 CO2_36m CO2 concentration at 36m/118ft ppm 8 CO2_21m CO2 concentration at 21m/70ft ppm 9 CO2_14m CO2 concentration at 14m/45ft ppm 10 CO2_7.6m CO2 concentration at 7.6m/25ft ppm 11 CO2_3m CO2 concentration at 3m/10ft ppm 12 CO2_1.8m CO2 concentration at 1.8m/6ft ppm 13 CO2_0.6m CO2 concentration at 0.6m/2ft ppm 14 Atm_P_36m Air pressure at 36m/118ft mb 15 Wind_Spd_36m Wind speed at 36m/118ft m/s 16 Wind_Spd_20m Wind speed at 20m/65ft m/s 17 Wind_Deg_36m Wind direction at 36m/115ft deg 0-360 18 Wind_Deg_20m Wind direction at 20m/65ft deg 0-360 19 Q_36m H2O mixing ratio at 36m/118ft g/kg 20 Q_20m H2O mixing ratio at 20m/65ft g/kg 21 Q_10m H2O mixing ratio at 10m/32ft g/kg 22 Q_2m H2O mixing ratio at 2m/6ft g/kg 23 RH_36m Relative humidity at 36m/118ft percent 0-100 24 RH_20m Relative humidity at 20m/65ft percent 0-100 25 RH_10m Relative humidity at 10m/32ft percent 0-100 26 RH_2m Relative humidity at 2m/6ft percent 0-100 27 Dew_Pt_36m Dew point at 36m/118ft degrees C 28 Dew_Pt_20m Dew point at 20m/65ft degrees C 29 Dew_Pt_10m Dew point at 10m/32ft degrees C 30 Dew_Pt_2m Dew point at 2m/6ft degrees C 31 Precip Total precipitation cm 32 Throughfall Precip at bottom of tower cm No snow adapter 33 Leaf wetness Leaf wetness at 36m/118ft KOhms 34 T_36m Air temperature – 36m/118ft degrees C 35 T_30m Air temperature – 30m/100ft degrees C 36 T_23m Air temperature – 23m/75ft degrees C 37 T_20m Air temperature – 20m/65ft degrees C 38 T_15m Air temperature – 15m/50ft degrees C 39 T_10m Air temperature – 10m/32ft degrees C 40 T_7.6m Air temperature – 7.6m/25ft degrees C 41 T_1.8m Air temperature – 1.8m/6ft degrees C 42 T_0.6m Air temperature – 0.6m/2ft degrees C 43 T_shed Temperature in control shed degrees C Disconnected in Jan 03 44 Ta_100cm Air temperature – 100cm/40in degrees C 45 Ta_50cm Air temperature – 50cm/20in degrees C 46 Ta_25cm Air temperature – 25cm/10in degrees C 47 Ta_5cm Air temperature – 5cm/2in degrees C 48 SoilT_0cm Soil temperature – 0cm/0in degrees C 49 SoilT_5cm Soil temperature – 5cm/2in degrees C 50 SoilT_10cm Soil temperature – 10cm/4in degrees C 51 SoilT_25cm Soil temperature – 25cm/10in degrees C 52 SoilT_50cm Soil temperature – 50cm/20in degrees C 53 SoilT_100cm Soil temperature – 100cm/40in degrees C 54 SoilLWC_5cm Soil moisture content – 5cm vol fraction 0-1 55 SoilLWC_10cm Soil moisture content – 10cm vol fraction 0-1 56 SoilLWC_20cm Soil moisture content – 20cm vol fraction 0-1 57 SoilLWC_50cm Soil moisture content – 50cm vol fraction 0-1 58 SoilLWC_100cm Soil moisture content – 100cm vol fraction 0-1 59 PAR_1m_1 Surface PAR (1m/3ft) umol/m2s 20 ft after 6/28/2003 60 PAR_1m_2 Surface PAR site 2 (1m/3ft) umol/m2s 40 ft after 6/28/2003 61 VPD_36m Vapor Pressure Deficit - 36m kPa 62 VPD_20m Vapor Pressure Deficit - 20m kPa 63 VPD_10m Vapor Pressure Deficit - 10m kPa 64 VPD_2m Vapor Pressure Deficit - 2m kPa 65 W_36m Mean vertical velocity m/s Only good for nonpreliminary flux data 66 PAR_36m_2 Delta_T total PAR umol/m2s installed 6/27/2003 67 PAR_36m_Diff Delta_T diffuse PAR umol/m2s installed 6/27/2003