SGP/ECOR/E3 - Missing data

Data are missing and unrecoverable.

• Water vapor density (q)(mean_q)
• latent heat of vaporization(lv)
• mean co2 concentration (c)(mean_c)
• rotated covariance wc(cvar_rot_wc)
• rotated covariance wq(cvar_rot_wq)
• covariance of qc(cvar_qc)
• vertical (elevation) wind angle(elev)
• Dummy altitude for Zeb(alt)
• lat(lat)
• average voltage of IRGA cooler(mean_cooler)
• number of c samples removed due to spikes(n_spk_c)
• number of samples with \IRGA hardware problem\ flag(n_bad_irga)
• rotated covariance wt(cvar_rot_wt)
• standard deviation of wind direction(std_wind_dir)
• standard deviation of wind elevation angle(std_elev)
• variance of w(var_rot_w)
• average atmospheric pressure (IGRA internal sensor)(atm_pres)
• vector averaged wind speed(wind_spd)
• mean value of out of range values and spikes of c -9999 if no spikes(mean_spk_c)
• rotated covariance vc(cvar_rot_vc)
• kurtosis of variable c(kurt_c)
• condensation pressure(cp)
• rotated covariance vq(cvar_rot_vq)
• Retrieved water vapor density profile(rho)
• number of valid q samples(n_good_q)
• rotated covariance vw(cvar_rot_vw)
• Vertical wind velocity (w)(mean_w)
• number of valid t samples(n_good_t)
• variance of v(var_rot_v)
• number of valid u samples(n_good_u)
• variance of u(var_rot_u)
• Virtual temperature (T)(mean_t)
• number of valid v samples(n_good_v)
• number of valid w samples(n_good_w)
• rotated covariance vt(cvar_rot_vt)
• Cross-boom wind velocity (v)(mean_v)
• Down-boom wind velocity (u)(mean_u)
• mean value of out of range values and spikes of t -9999 if no spikes(mean_spk_t)
• mean value of \spike\ u samples(mean_spk_u)
• mean value of \spike\ v samples(mean_spk_v)
• mean value of \spike\ w samples(mean_spk_w)
• vector averaged wind direction(wind_dir)
• CO2 flux(fc)
• 0=real or 1=dummy value of lv(real_lv)
• Vertical angle of wind(phi)
• number of valid c samples(n_good_c)
• 0=real or 1=dummy value of mr(real_mr)
• kurtosis of variable u(kurt_u)
• kurtosis of variable t(kurt_t)
• kurtosis of variable w(kurt_w)
• kurtosis of variable v(kurt_v)
• kurtosis of variable q(kurt_q)
• rotated mean v(mean_rot_v)
• mean horizontal wind speed(mean_rot_u)
• mean value of out of range values and spikes of q -9999 if no spikes(mean_spk_q)
• rotated mean w(mean_rot_w)
• covariance of tq(cvar_tq)
• lon(lon)
• number of w samples removed due to spikes(n_spk_w)
• number of u samples removed due to spikes(n_spk_u)
• number of v samples removed due to spikes(n_spk_v)
• number of t samples removed due to spikes(n_spk_t)
• number of q samples removed due to spikes(n_spk_q)
• covariance of tc(cvar_tc)
• 0=real or 1=dummy value of rho(real_rho)
• latent heat flux(lv_e)
• number of samples with IRGA optical path blocked flag(n_bad_irga_light)
• mixing ratio(mr)
• 0=real or 1=dummy value of cp(real_cp)
• base time(base_time)
• covariance uc(cvar_uc)
• Time offset of tweaks from base_time(time_offset)
• uw covariance(cvar_uw)
• covariance uv(cvar_uv)
• covariance ut(cvar_ut)
• covariance uq(cvar_uq)
• Friction velocity(ustar)
• h(h)
• covariance vq(cvar_vq)
• momentum flux (dynamic)(k)
• covariance vc(cvar_vc)
• vw covariance(cvar_vw)
• time(time)
• covariance vt(cvar_vt)
• rotated covariance uc(cvar_rot_uc)
• variance of variable w(var_w)
• covariance wq(cvar_wq)
• variance of t(var_t)
• variance of variable u(var_u)
• variance of variable v(var_v)
• covariance wc(cvar_wc)
• variance of q(var_q)
• rotated covariance ut(cvar_rot_ut)
• rotated covariance uq(cvar_rot_uq)
• rotated covariance uw(cvar_rot_uw)
• rotated covariance uv(cvar_rot_uv)
• variance of c(var_c)
• number of bad or out of range w samples(n_bad_w)
• wT covariance(cvar_wt)
• number of bad or out of range v samples(n_bad_v)
• number of bad or out of range u samples(n_bad_u)
• number of bad or out of range t samples(n_bad_t)
• skewness of variable c(skew_c)
• skewness of variable w(skew_w)
• skewness of variable v(skew_v)
• number of bad or out of range q samples(n_bad_q)
• average temperature (IGRA internal sensor)(temp_irga)
• skewness of variable q(skew_q)
• number of bad or out of range c samples(n_bad_c)
• skewness of variable u(skew_u)
• skewness of variable t(skew_t)
• number of samples with bad sonic status flag(n_bad_son_ic)

SGP/ECOR/E3 - Failed IRGA

Infrared gas analyzer (IRGA) failed 6/16; a new IRGA was installed on
6/30.  All data related to CO2 and water vapor concentration measurements
(including CO2 flux and latent heat flux) are incorrect for the period of
June 16, 2004, 17:30 to June 30, 2004, 17:30.  Wind and sensible heat flux data are OK.

• rotated covariance uc(cvar_rot_uc)
• Water vapor density (q)(mean_q)
• latent heat of vaporization(lv)
• covariance wq(cvar_wq)
• CO2 flux(fc)
• covariance wc(cvar_wc)
• covariance uc(cvar_uc)
• number of valid c samples(n_good_c)
• mean co2 concentration (c)(mean_c)
• variance of q(var_q)
• rotated covariance wc(cvar_rot_wc)
• rotated covariance wq(cvar_rot_wq)
• covariance of qc(cvar_qc)
• rotated covariance uq(cvar_rot_uq)
• kurtosis of variable q(kurt_q)
• variance of c(var_c)
• number of c samples removed due to spikes(n_spk_c)
• number of samples with \IRGA hardware problem\ flag(n_bad_irga)
• mean value of out of range values and spikes of q -9999 if no spikes(mean_spk_q)
• covariance uq(cvar_uq)
• skewness of variable c(skew_c)
• covariance of tq(cvar_tq)
• covariance vq(cvar_vq)
• average temperature (IGRA internal sensor)(temp_irga)
• number of bad or out of range q samples(n_bad_q)
• average atmospheric pressure (IGRA internal sensor)(atm_pres)
• mean value of out of range values and spikes of c -9999 if no spikes(mean_spk_c)
• skewness of variable q(skew_q)
• rotated covariance vc(cvar_rot_vc)
• covariance vc(cvar_vc)
• kurtosis of variable c(kurt_c)
• number of bad or out of range c samples(n_bad_c)
• number of q samples removed due to spikes(n_spk_q)
• condensation pressure(cp)
• covariance of tc(cvar_tc)
• rotated covariance vq(cvar_rot_vq)
• Retrieved water vapor density profile(rho)
• number of valid q samples(n_good_q)
• latent heat flux(lv_e)
• number of samples with IRGA optical path blocked flag(n_bad_irga_light)
• mixing ratio(mr)

SGP/ECOR/E3 - Data transfer problem

Serial communication with one sensor (the IRGA) were partially disrupted due to 
deteriorating hardware from 13:53, Dec. 19, 2004 to 09:31 Dec. 20, 2004.  Serial data from the IRGA 
is mainly used to get sensor status codes, so this might lead to false increase of "bad" 
point count.  It seems that IRGA analog outputs (stored in raw sonic data file,  primary 
source of data) were not affected, so the flux data may be reprocessed or verified using 
raw sonic data files and ignoring IRGA sensor status.

• Raw data stream - documentation not supported(raw)

• rotated covariance uc(cvar_rot_uc)
• Water vapor density (q)(mean_q)
• latent heat of vaporization(lv)
• covariance wq(cvar_wq)
• CO2 flux(fc)
• covariance wc(cvar_wc)
• covariance uc(cvar_uc)
• number of valid c samples(n_good_c)
• mean co2 concentration (c)(mean_c)
• variance of q(var_q)
• rotated covariance wc(cvar_rot_wc)
• rotated covariance wq(cvar_rot_wq)
• covariance of qc(cvar_qc)
• rotated covariance uq(cvar_rot_uq)
• kurtosis of variable q(kurt_q)
• variance of c(var_c)
• average voltage of IRGA cooler(mean_cooler)
• number of c samples removed due to spikes(n_spk_c)
• number of samples with \IRGA hardware problem\ flag(n_bad_irga)
• mean value of out of range values and spikes of q -9999 if no spikes(mean_spk_q)
• covariance uq(cvar_uq)
• rotated covariance wt(cvar_rot_wt)
• skewness of variable c(skew_c)
• covariance of tq(cvar_tq)
• covariance vq(cvar_vq)
• average temperature (IGRA internal sensor)(temp_irga)
• number of bad or out of range q samples(n_bad_q)
• average atmospheric pressure (IGRA internal sensor)(atm_pres)
• mean value of out of range values and spikes of c -9999 if no spikes(mean_spk_c)
• skewness of variable q(skew_q)
• rotated covariance vc(cvar_rot_vc)
• covariance vc(cvar_vc)
• kurtosis of variable c(kurt_c)
• number of bad or out of range c samples(n_bad_c)
• number of q samples removed due to spikes(n_spk_q)
• condensation pressure(cp)
• covariance of tc(cvar_tc)
• rotated covariance vq(cvar_rot_vq)
• Retrieved water vapor density profile(rho)
• number of valid q samples(n_good_q)
• latent heat flux(lv_e)
• number of samples with IRGA optical path blocked flag(n_bad_irga_light)
• mixing ratio(mr)

SGP/ECOR/E3 - CO2/H2O Sensor Not Working

The CO2/H2O sensor failed.  Means and fluxes of CO2 and H2O (lv_e) are incorrect or 
missing.

• rotated covariance uc(cvar_rot_uc)
• Water vapor density (q)(mean_q)
• covariance of tq(cvar_tq)
• covariance vq(cvar_vq)
• average temperature (IGRA internal sensor)(temp_irga)
• covariance wq(cvar_wq)
• average atmospheric pressure (IGRA internal sensor)(atm_pres)
• CO2 flux(fc)
• covariance wc(cvar_wc)
• rotated covariance vc(cvar_rot_vc)
• covariance vc(cvar_vc)
• covariance uc(cvar_uc)
• variance of q(var_q)
• mean co2 concentration (c)(mean_c)
• rotated covariance wc(cvar_rot_wc)
• rotated covariance wq(cvar_rot_wq)
• covariance of tc(cvar_tc)
• covariance of qc(cvar_qc)
• rotated covariance vq(cvar_rot_vq)
• rotated covariance uq(cvar_rot_uq)
• latent heat flux(lv_e)
• variance of c(var_c)
• covariance uq(cvar_uq)