SGP/ECOR/E10 - Missing data

Data are missing and unrecoverable.

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

SGP/ECOR/E14 - Fluxes and Most Measurements Incorrect

The ECOR system was having major problems during this period and most measurements were 
incorrect most of the time.

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

SGP/ECOR/E5 - Reprocess: Time shifted -7 hours

An inadvertant power outage caused the ECOR program to shut down abnormally.  When power 
was restored, the timestamps on the ECOR files were 7 hours behind the correct time and 
the site ID was not accessed from the ECOR configuration file resulting in site ID (05) 
being replaced with "AN".

These conditions caused the ECOR files to be unrecognizable and therefore are presently 
missing in the Archive.

Correction of the timestamp and ID in the files should allow them to be processed and 
added to the Archive.

• Raw data stream - documentation not supported(raw)

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

SGP/ECOR/E21 - Intermittent incorrect flux measurements

At various times during the period, the LI-7500 CO2/H2O serial and analog signals from the 
LI-7500 were missing, but usually not at the same time.

When the CO2/H2O serial datastream was missing, the Pressure and Temperature were missing; 
this did not, in itself, result in incorrect fluxes, as default values for pressure and 
temperature are automatically used.

Fluxes were incorrect when the CO2/H2O analog datastream was missing; these
times are identified by the qc checks.

• latent heat flux(lv_e)
• CO2 flux(fc)
• covariance wq(cvar_wq)
• average atmospheric pressure (IGRA internal sensor)(atm_pres)
• covariance wc(cvar_wc)
• average temperature (IGRA internal sensor)(temp_irga)

SGP/ECOR/E10 - CO2 and Latent Heat Fluxes Incorrect

The CO2 and latent heat fluxes were incorrect because the sonic anemometer was not working 
properly.

• covariance wc(cvar_wc)
• covariance wq(cvar_wq)
• rotated covariance wq(cvar_rot_wq)
• variance of q(var_q)
• Water vapor density (q)(mean_q)
• rotated covariance wc(cvar_rot_wc)
• variance of c(var_c)
• CO2 flux(fc)
• mean co2 concentration (c)(mean_c)
• latent heat flux(lv_e)

SGP/ECOR/E5 - Flux Measurements Incorrect

The ECOR datastream was corrupted; this happens when the ECOR program produces a 
datastream of the wrong length (i.e., leaves one or more measurements out).

Fluxes and some other measurements are incorrect.

Note: Mentor reports reprocessing will not correct this problem.

• CO2 flux(fc)
• latent heat flux(lv_e)
• h(h)

SGP/ECOR/E14 - IRGA Temperature Incorrect or Missing

The temp_irga was too large 05/09/07 1300 GMT - 05/10/07 2000 GMT.

The temp_irga was flat lined at 49.96 C 05/10/07 2030 GMT - 05/17/07 2000 GMT.  

The temp_irga was missing 05/17/07 2030 GMT - 05/19/07 1700 GMT.

• average temperature (IGRA internal sensor)(temp_irga)

SGP/ECOR/E5 - Flux Data Incorrect

CO2 flux (lv_e) and latent heat flux (fc) were incorrect because the sonic anemometer was 
not working.

• CO2 flux(fc)
• covariance wq(cvar_wq)
• latent heat flux(lv_e)
• Water vapor density (q)(mean_q)
• mean co2 concentration (c)(mean_c)
• variance of q(var_q)
• covariance wc(cvar_wc)
• variance of c(var_c)

SGP/ECOR/E24 - Half Hours of Data Missing

Individual half hours of data were missing infrequently because of a UPS
problem.  The extent of missing data is minimal, with only a few to several half hours 
missing most months.

Data quality of the surrounding data times was not affected.

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