readme.txt: (upate April 3, 2002) 0) Fair use policy: Kindly inform the appropriate Principal Investigators of how you are using site data and of any publication plans. If the Principal Investigators feel that they should be acknowledged or offered participation as authors, they will let you know and we assume that an agreement on such matters will be reached prior to publishing and/or use of the data for publication. If your work directly competes with the Principal Investigator's analysis they may ask that they have the opportunity to submit a manuscript before you submit the one that uses their data. In addition, when publishing, please acknowledge the agency that supported the research. 1) Contact info: Xuhui.lee@yale.edu, phone 203-432-6271, fax 203-432-5023 2) Data from biological and atmospheric research at Great Mountain, Connecticut. Details of the site and instrumentation are given by Lee and Hu 2002 and Lee, Russell and Andre 2001, available at http://pantheon.yale.edu/~xhlee/pubs.htm 3) Last two digits of the file name denotes year of observation 4) Ranges of expected values are given in () following variable definition 5) Rain measurement in 1999 is not reliable 6) TDR 10 cm measurement in 2000 was corrected against gravimetric measurement using regression y (TDR %) = 0.471 x (gravimetric, %) + 1.82 (0,1) 7) Lightning damage to wind vane on DOY 216.265, 2001. Mean vector wind direction was derived from sonic anemomenter for period DOY 216.265, 2001 to ****. met.txt: general meteorology (:,1): time ending (EDT) (:,2): PAR, umol/m2s, 25.6 m (range 0 to 2000) (:,3): net radiation, W/m2, 25.6 m (-150 to 1000) (:,4): soil heat flux at 5 cm, W/m2 (-100 to 100) (:,5): soil heat flux at 5 cm, W/m2 (-100 to 100) (:,6): air temp at 25.6 m (-40 to 40) (:,7): relative humidity at 25.6 m (0 to 110) (:,8): soil temp at 5 cm, degC (-2 to 30) (:,9): soil temp at 15 cm, degC (-2 to 30) (:,10): soil temp at 50 cm, degC (-2 to 30) (:,11): soil integrating temp 0-5 cm, degC (-2 to 30) (:,12): algebraic mean wind direction at 29 m (true N, 0 to 360) (:,13): algebraic mean wind speed at 29 m, m/s (0.1 to 20) (:,14): barometric pressure, surface, hPa (850 to 1000) (:,15): total rain, divide by 10 to get mm/30min (:,16): algebraic mean wind speed (again) (:,17): mean vector velocity, m/s (0.1 to 20) (:,18): mean vector direction, deg (0 to 360) (:,19): std of wind direction (0 to 360) mnad: half hourly means from the eddy covariance system at 30.4 m (:,1): time ending (EDT) (:,2): wind speed U component, m/s (-20 to 20) (:,3): wind speed V component, m/s (-20 to 20) (:,4): wind speed W component, m/s (-20 to 20) (:,5): air temperature measured with sonic, degC (-40 to 40) (:,6): CO2 mixing ratio, umol/mol, without correction for h2o dilution (300 to 500) (:,7): H2O concentraion, mmol/mol (0 to 40) gillad: flux and other variables produced by the eddy covariance at 30.4 m (:,1), time ending (EDT) (:,2), longitudinal velocity, m/s (0.1 to 20) (:,3), long velocity variance, m2/s2 (0.01 to 20) (:,4), vertical velocity variance, m2/s2 (0.01 to 20) (:,5), kinematic momentum flux, m2/s2 (-5 to 0.1) (:,6), kinematic sensible heat flux, degC m/s (-0.2 to 0.5) (:,7), CO2 flux with WPL correction, mg/m2s (-3 to 3) (:,8), water vapor flux, licor, g/m2s (-0.05 to 0.5) (:,9), water vapor flux, k20, g/m2s (-0.05 to 0.5) tempprof: air temperature profile (:,1): time ending (EDT) (:,2): air temp degC, 1.1 m (:,3): 4.7 m (:,4): 7.4 m (:,5): 11.5 m (:,6): 15.6 m (:,7): 19.1 m (:,8): 23.7 m (:,9): 27.8 m (:,10): 31.7 m gasprof: h2o and co2 mixing ratios (:,1): time ending (EDT) (:,2): h2o mixing ratio, mmol/mol, 1.5 m (:,3): 7.4 m (:,4): 13.6 m (:,5): 21.7 m (:,6): 30.7 m (:,7): co2 mixing ratio, umol/mol, 1.5 m, without correction for h2o dilution (:,8): 7.4 m (:,9): 13.6 m (:,10): 21.7 m (:,11): 30.7 m flux: wind and flux data after corrections for tube attenuation, sensor bias, and tower interference (:,1): time ending (EDT) (:,2): longitudinal velocity, m/s (:,3): momentum flux, m2/s2 (:,4): sensible heat flux W/m2 (:,5): latent heat flux W/m2 (:,6); co2 flux mg/m2s smt: air temperature in the canopy and soil moisture measurement (:,1): time ending (EDT) (:,2): air temp degC, 1.1 m (:,3): 4.7 m (:,4): 7.4 m (:,5): 11.5 m (:,6): TDR soil moisture at 10 cm by volume, site 1, (:,7): TDR soil moisture at 30 cm by volume, site 1, uncorrected (0,1) (:,8): 50 cm, site 1, uncorrected (0,1) (:,9): 5 cm, site 2, uncorrected (0,1) (:,10-13): spare hg: Total gaseous mercury (:,1): time ending (EDT) (:,2): TGM at STP, averaged of two traps, without correction for water vapor density effect, ng/m3 (0.5 to 5) (:,3), one trap, ng/m3 (:,4), the other trap, ng/m3 (:,5), data quality flag (0=good, -1=bad)