SGP/ECOR/E14 - CO2/H2O Incorrect

The LI-7500 CO2/H2O sensor stopped working after a rainstorm.  CO2 and H2O data are 
incorrect during the stated period.

• n_bad_irga
• skew_q
• covariance tq(cvar_tq)
• rotated covariance wc(cvar_rot_wc)
• rotated covariance vq(cvar_rot_vq)
• covariance vq(cvar_vq)
• n_spk_c
• temp_irga
• Latent heat flux(lv_e)
• kurt_c
• covariance uc(cvar_uc)
• Mean CO2 density(mean_c)
• variance of variable q(var_q)
• covariance wc(cvar_wc)
• rotated covariance vc(cvar_rot_vc)
• rotated covariance wq(cvar_rot_wq)
• n_good_q
• real_lv
• Mean H2O density(mean_q)
• kurt_q
• covariance uq(cvar_uq)
• mean_spk_c
• variance of variable c(var_c)
• covaraince wq(cvar_wq)
• n_good_c
• rotated covariance uq(cvar_rot_uq)
• n_bad_c
• CO2 flux(fc)
• n_bad_irga_light
• covariance tc(cvar_tc)
• covaraince vc(cvar_vc)
• covariance qc(cvar_qc)
• skew_c
• rotated covariance uc(cvar_rot_uc)
• n_bad_q
• n_spk_q
• mean_spk_q

SGP/ECOR/E14 - 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.

• Mean H2O density(mean_q)
• Corrected sensible heat flux(h)
• atm_pres
• Mean CO2 density(mean_c)
• temp_irga
• CO2 flux(fc)
• Latent heat flux(lv_e)

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.

• n_bad_irga
• rotated covariance vq(cvar_rot_vq)
• rotated covariance vw(cvar_rot_vw)
• temp_irga
• rotated covariance vt(cvar_rot_vt)
• rho
• Mean CO2 density(mean_c)
• rotated covariance vc(cvar_rot_vc)
• rotated covariance uw(cvar_rot_uw)
• 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)
• rotated variance v(var_rot_v)
• rotated variance u(var_rot_u)
• rotated variance w(var_rot_w)
• mean_cooler
• covariance tc(cvar_tc)
• skew_c
• lon
• rotated covariance uc(cvar_rot_uc)
• n_bad_son_ic
• Water vapor mixing ratio observed by the Raman lidar(mr)
• variance of variable v(var_v)
• n_good_w
• covariance tq(cvar_tq)
• variance of variable u(var_u)
• n_good_v
• n_good_u
• variance of variable w(var_w)
• n_good_t
• elev
• Latent heat flux(lv_e)
• base_time
• covariance uc(cvar_uc)
• variance of variable q(var_q)
• variance of variable t(var_t)
• n_good_q
• wind_spd
• covariance ut(cvar_ut)
• Momentum flux (dynamic)(k)
• covariance uv(cvar_uv)
• lv
• Corrected sensible heat flux(h)
• mean_rot_w
• covariance uq(cvar_uq)
• Mean horizontal wind speed(mean_rot_u)
• time_offset
• mean_rot_v
• mean_spk_c
• variance of variable c(var_c)
• n_good_c
• n_bad_irga_light
• wind_dir
• mean_spk_v
• mean_spk_w
• covaraince vc(cvar_vc)
• mean_spk_t
• mean_spk_u
• covariance uw(cvar_uw)
• mean_spk_q
• rotated covariance wc(cvar_rot_wc)
• covariance vq(cvar_vq)
• n_spk_c
• covariance vw(cvar_vw)
• covariance vt(cvar_vt)
• kurt_c
• covariance wc(cvar_wc)
• rotated covariance wt(cvar_rot_wt)
• rotated covariance wq(cvar_rot_wq)
• real_lv
• kurt_u
• kurt_t
• Pressure, condensation, at altitude, RUC model output(cp)
• kurt_q
• covaraince wq(cvar_wq)
• friction velocity(ustar)
• covariance wt(cvar_wt)
• real_cp
• n_spk_w
• n_spk_t
• n_spk_u
• n_spk_v
• kurt_v
• n_spk_q
• real_mr
• kurt_w
• skew_u
• skew_t
• skew_w
• skew_v
• skew_q
• standard deviation of wind elevation angle(std_elev)
• real_rho
• atm_pres
• time
• Mean H2O density(mean_q)
• Mean sonic temperature (t), i.e. virtual temperature(mean_t)
• mean_u
• mean_v
• mean_w
• phi
• n_bad_c
• covariance qc(cvar_qc)
• n_bad_w
• n_bad_v
• n_bad_u
• n_bad_t
• lat
• n_bad_q

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.

• temp_irga

SGP/ECOR/E14 - Sensor failure

The water vapor output of the LI-7500 was too low, indicating that water vapor leaked into 
the sensor and that the chemicals are spent or there was an electronic failure.

Latent heat flux was not normally affected by this problem.

• Mean H2O density(mean_q)