SGP/SMOS/E15 - 6-month Calibration Checks

During the time periods specified, the SMOS.E15 tower was lowered for 6-month Calibration 
Checks.  During these times wind data are incorrect and temperature and humidity data may 
be incorrect.

Note, exact times when tower was down or maintenance was being performed is sometimes 
unknown.  Users should use the remaining data from these days with caution.

• Wind Speed (vector averaged)(wspd_va)
• Unit Vector Wind Direction(wdir)
• Mean Wind Speed(wspd)
• Relative humidity inside the instrument enclosure(rh)
• Beam 0 Temperature(temp)
• Standard Deviation of wind direction(sd_deg)
• Vapor Pressure (kiloPascals)(vap_pres)
• barometric pressure(bar_pres)

• barometric pressure(bar_pres)
• Relative humidity inside the instrument enclosure(rh)
• Beam 0 Temperature(temp)
• Standard Deviation of Air Temperature(sd_temp)
• Mean Wind Speed(wspd)
• Standard Deviation of wind direction(sd_deg)
• Vapor Pressure (kiloPascals)(vap_pres)
• Wind Speed (vector averaged)(wspd_va)
• Unit Vector Wind Direction(wdir)
• Standard Deviation of Vapor Pressure(sd_vap_pres)
• Standard Deviation of Barometric Pressure(sd_bar_pres)
• Standard Deviation of Relative Humidity(sd_rh)
• Standard Deviation of Wind Speed(sd_wspd)

• Time of Minimum Temperature(time_min_temp)
• Time of Minimum Relative Humidity(time_min_rh)
• Time of Maximum Temperature(time_max_temp)
• Maximum Barometric Pressure(max_bar_pres)
• maximum wind speed (gusts)(max_wspd)
• Time of Minimum Wind Speed(time_min_wspd)
• Maximum Relative Humidity(max_rh)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Minimum Relative Humidity(min_rh)
• Minimum of Wind speed(min_wspd)
• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Maximum Vapor Pressure(max_vap_pres)
• Time of Minimum Vapor Pressure(time_min_vap_pres)
• Maximum Temperature(max_temp)
• Minimum Vapor Pressure(min_vap_pres)
• Minimum Temperature(min_temp)
• Time of Maximum Wind Speed(time_max_wspd)
• Minimum Barometric Pressure(min_bar_pres)
• Time of Maximum Relative Humidity(time_max_rh)
• Time of Maximum Vapor Pressure(time_max_vap_pres)

SGP/ECOR/E16 - Missing data

Data are missing and unrecoverable.

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

SGP/ECOR/E16 - 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.

Reprocessing will not correct this problem; the raw data are corrupted.

• latent heat flux(lv_e)
• h(h)
• average temperature (IGRA internal sensor)(temp_irga)
• mean co2 concentration (c)(mean_c)
• CO2 flux(fc)
• Water vapor density (q)(mean_q)
• average atmospheric pressure (IGRA internal sensor)(atm_pres)

SGP/SMOS/E15 - Barometer data missing or incorrect

After the data logger operating system upgrade on 01/03 barometric pressure was missing or 
reporting very low values.

• barometric pressure(bar_pres)

• barometric pressure(bar_pres)
• Standard Deviation of Barometric Pressure(sd_bar_pres)

• Minimum Barometric Pressure(min_bar_pres)
• Time of Minimum Barometric Pressure(time_min_bar_pres)
• Time of Maximum Barometric Pressure(time_max_bar_pres)
• Maximum Barometric Pressure(max_bar_pres)

SGP/SMOS/E15 - Wind Direction Values Intermittently Incorrect

Intermittently the wind direction was reported at exactly 353 degrees for long time 
periods.

• Unit Vector Wind Direction(wdir)
• Standard Deviation of wind direction(sd_deg)

• Unit Vector Wind Direction(wdir)
• Standard Deviation of wind direction(sd_deg)

SGP/SMOS/E15 - Reprocess: Barometer data a factor of 10 too high.

The program was modified and an incorrect multiplier was used so that the barometer data 
was reported in hPa instead of kPa.

• barometric pressure(bar_pres)

• barometric pressure(bar_pres)
• Standard Deviation of Barometric Pressure(sd_bar_pres)

• Minimum Barometric Pressure(min_bar_pres)
• Maximum Barometric Pressure(max_bar_pres)