Data Quality Reports for Session: 112720 User: mpbutler Completed: 06/26/2008

TABLE OF CONTENTS

DQR IDSubjectData Streams Affected
D030415.10SGP/TWR/C1 - West-side 60m data incorrect due to low batterysgp1twr60mC1.b1, sgp30twr60mC1.a1, sgp30twr60mC1.b1
D040212.4SGP/PGS/C1 - Reprocessing User NotessgppgsC1.b1
D040217.2SGP/CO2FLX/C1 - Reprocessing User Notessgp30co2flx25mC1.b1, sgp30co2flx4mC1.b1, sgp30co2flx4mmetC1.b1, sgp30co2flx60mC1.b1
D041015.2SGP/PGS/C1 - Reprocessing User NotessgppgsC1.b1
D041026.1SGP/CO2FLX/C1 - Reprocess: Unitssgp30co2flx25mC1.b1, sgp30co2flx4mC1.b1, sgp30co2flx60mC1.b1
D041103.1SGP/CO2FLX/C1 - Mean CO2 density incorrect, CO2 flux suspectsgp30co2flx60mC1.b1
D050111.1SGP/PGS/C1 - Incorrect 60m DatasgppgsC1.b1
D051118.1SGP/PGS/C1 - Suspicious 4m datasgppgsC1.b1
D051118.2SGP/PGS/C1 - Suspicious 2m datasgppgsC1.b1
D051118.3SGP/PGS/C1 - Suspicious 25m and 60m datasgppgsC1.b1
D051118.4SGP/PGS/C1 - Updated filessgppgsC1.b1
D990415.6SGP/TWR/C1 - Missing datasgp1440twr60mC1.b1, sgp1twr60mC1.b1, sgp30twr60mC1.b1
D990607.1SGP/TWR/C1 - W Side of Tower lowered for maintenancesgp1440twr25mC1.b1, sgp1440twr60mC1.b1, sgp1twr25mC1.b1, sgp1twr60mC1.b1, sgp30twr25mC1.b1,
sgp30twr60mC1.b1


DQRID : D030415.10
Start DateStart TimeEnd DateEnd Time
02/21/2003214002/22/20031846
02/22/2003214002/26/20031604
Subject:
SGP/TWR/C1 - West-side 60m data incorrect due to low battery
DataStreams:sgp1twr60mC1.b1, sgp30twr60mC1.a1, sgp30twr60mC1.b1
Description:
A low battery voltage caused T, RH, and VP to be incorrect. Data may be missing from some 
of the second period because battery voltage dropped to zero at one point.
Measurements:sgp1twr60mC1.b1:
  • Relative humidity inside the instrument enclosure(rh)
  • Beam 0 Temperature(temp)
  • Vapor Pressure (kiloPascals)(vap_pres)
sgp30twr60mC1.a1:
  • Beam 0 Temperature(temp)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Relative humidity inside the instrument enclosure(rh)
sgp30twr60mC1.b1:
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Beam 0 Temperature(temp)
  • Relative humidity inside the instrument enclosure(rh)

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DQRID : D040212.4
Start DateStart TimeEnd DateEnd Time
04/11/2001000002/12/20042359
Subject:
SGP/PGS/C1 - Reprocessing User Notes
DataStreams:sgppgsC1.b1
Description:
Time Variables - to make the PGS system more consistent with LBNL's other data streams, 
the variable 'yyyymmddhhmmss' was renamed 'yyyydddhhmmss'. Also, at the bottom of each 
file, variables 'yyyy','mon','hour','min' were added for those users who prefer to use these 
variables instead. The new 'time' variable (seconds since midnight of the start of file) 
was added to make files compatible with the new recommendations.

Quality Control Flags - to prevent confusion, the quality control flags 'qc_co2ppm' and 
'qc_sum_co2' were combined. The flag 'qc_sum_co2' was elliminated and 'qc_co2ppm' now 
performs range checking on 'co2ppm' variable as well as checking values of all dependencies' 
qc flags.
Measurements:sgppgsC1.b1:
  • 90% confidence limit of co2ppm(co2ppm_se)
  • Pressure of channel 2(pres2)
  • reading of CO2 in mV(co2mv)
  • reference CO2 reading in mV(ref)
  • calibration coefficient 1 (quadratic fit)(coeff1)
  • calibration coefficient 3 (quadratic fit)(coeff3)
  • longitude of instrument tower(site_longitude)
  • pressure inside the IRGA box measured by the pressure controller(pres_ctrlr)
  • Temperature in refigerator(t_refrig)
  • flow rate measured by the mass flow controller(flow_rate)
  • calibration coefficient 2 (quadratic fit) 90% confidence limit(coeff2_se)
  • p-value of co2 readings during the last 30sec of 3min period of raw data(co2mv_slope_pval)
  • MFRSR channels(channel)
  • Number of measurements for indicated channel(nmeas)
  • calculated concentration of CO2(co2ppm)
  • latitude of instrument tower(site_latitude)
  • calibration coefficient 2 (quadratic fit)(coeff2)
  • Second level of QC, see reject_flag_explanation global attribute(reject_flag)
  • Pressure of channel 1(pres1)
  • Date and time in alternate form(yyyymmddhhmmss)
  • height of base of instrument tower(site_elevation)
  • Slope of CO2 readings during last 30sec of 3min period of raw data(co2mv_slope)
  • flag indicating which channel isotope sample was taken from(iso)
  • base time(base_time)
  • Pressure of channel 3(pres3)
  • calibration coefficient 3 (quadratic fit) 90% confidence limit(coeff3_se)
  • 90% confidence limint of co2mv_slope(co2mv_slope_se)
  • temperature of the IRGA(t_irga)
  • adjusted CO2(adj)
  • r-squared of quadratic fit(r2)
  • Pressure of channel 4(pres4)
  • calibration coefficient 1 (quadratic fit) 90% confidence limit(coeff1_se)
  • First level of QC, see warn_flag_explanation global attribute(warn_flag)
  • standard deviation of co2mv(co2mv_se)

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DQRID : D040217.2
Start DateStart TimeEnd DateEnd Time
12/18/2002000002/17/20040000
Subject:
SGP/CO2FLX/C1 - Reprocessing User Notes
DataStreams:sgp30co2flx25mC1.b1, sgp30co2flx4mC1.b1, sgp30co2flx4mmetC1.b1, sgp30co2flx60mC1.b1
Description:
Format Changes:
  To comply with archive standards, the name of the unlimited dimention variable in the 
cdf level b1 files was changed from 'record' to 'time'. This does not affect data quality.
Measurements:sgp30co2flx60mC1.b1:
  • height of base of instrument tower(site_elevation)
  • h(h)
  • latitude of instrument tower(site_latitude)
  • mean IRGA pressure(mean_p)
  • variance of c(var_c)
  • Date and time in alternate form(yyyydddhhmmss)
  • Virtual temperature (T)(mean_t)
  • mean horizontal wind speed(mean_rot_u)
  • Time offset of tweaks from base_time(time_offset)
  • variance of q(var_q)
  • variance of v(var_rot_v)
  • fractional day of the year(doy)
  • Vertical angle of wind(phi)
  • variance of w(var_rot_w)
  • Monin-Obukhov length scale(Lmoni)
  • variance of u(var_rot_u)
  • Unit Vector Wind Direction(wdir)
  • Friction velocity(ustar)
  • additive WPL LE correction to c flux(fc_wpl_le)
  • additive WPL H correction to c flux(fc_wpl_h)
  • base time(base_time)
  • rotation to zero w(theta)
  • longitude of instrument tower(site_longitude)
  • mean co2 concentration (c)(mean_c)
  • height of instument from tower base(zm)
  • variance of t(var_t)
  • WPL corrected CO2 flux(fc_corr)
  • Water vapor density (q)(mean_q)
  • Latent heat flux(le)
sgp30co2flx4mC1.b1:
  • mean IRGA pressure(mean_p)
  • variance of c(var_c)
  • variance of t(var_t)
  • Latent heat flux(le)
  • mean horizontal wind speed(mean_rot_u)
  • Vertical angle of wind(phi)
  • Monin-Obukhov length scale(Lmoni)
  • variance of q(var_q)
  • height of instument from tower base(zm)
  • longitude of instrument tower(site_longitude)
  • additive WPL LE correction to c flux(fc_wpl_le)
  • Virtual temperature (T)(mean_t)
  • Water vapor density (q)(mean_q)
  • h(h)
  • additive WPL H correction to c flux(fc_wpl_h)
  • Date and time in alternate form(yyyydddhhmmss)
  • Unit Vector Wind Direction(wdir)
  • mean co2 concentration (c)(mean_c)
  • variance of w(var_rot_w)
  • base time(base_time)
  • variance of u(var_rot_u)
  • variance of v(var_rot_v)
  • rotation to zero w(theta)
  • WPL corrected CO2 flux(fc_corr)
  • latitude of instrument tower(site_latitude)
  • Time offset of tweaks from base_time(time_offset)
  • Friction velocity(ustar)
  • height of base of instrument tower(site_elevation)
  • fractional day of the year(doy)
sgp30co2flx25mC1.b1:
  • base time(base_time)
  • Monin-Obukhov length scale(Lmoni)
  • Latent heat flux(le)
  • variance of t(var_t)
  • variance of u(var_rot_u)
  • Date and time in alternate form(yyyydddhhmmss)
  • variance of v(var_rot_v)
  • Vertical angle of wind(phi)
  • Unit Vector Wind Direction(wdir)
  • longitude of instrument tower(site_longitude)
  • latitude of instrument tower(site_latitude)
  • WPL corrected CO2 flux(fc_corr)
  • height of instument from tower base(zm)
  • variance of q(var_q)
  • Friction velocity(ustar)
  • variance of c(var_c)
  • additive WPL LE correction to c flux(fc_wpl_le)
  • mean IRGA pressure(mean_p)
  • variance of w(var_rot_w)
  • Virtual temperature (T)(mean_t)
  • fractional day of the year(doy)
  • mean co2 concentration (c)(mean_c)
  • rotation to zero w(theta)
  • mean horizontal wind speed(mean_rot_u)
  • height of base of instrument tower(site_elevation)
  • h(h)
  • additive WPL H correction to c flux(fc_wpl_h)
  • Water vapor density (q)(mean_q)
  • Time offset of tweaks from base_time(time_offset)
sgp30co2flx4mmetC1.b1:
  • average of four lower soil moisture sensors(mean_m_soil_lower)
  • standard error of mean_t_soil_middle note maximum of two values used in
    calculation(stderr_mean_t_soil_middle)
  • average of two middle soil temperature sensors(mean_t_soil_middle)
  • Time offset of tweaks from base_time(time_offset)
  • h(h)
  • additive WPL H correction to c flux(fc_wpl_h)
  • variance of v(var_rot_v)
  • Hourly precipitation(precip)
  • additive WPL LE correction to c flux(fc_wpl_le)
  • variance of u(var_rot_u)
  • rotation to zero w(theta)
  • standard error of mean_t_soil_lower note maximum of two values used in
    calculation(stderr_mean_t_soil_lower)
  • fractional day of the year(doy)
  • WPL corrected CO2 flux(fc_corr)
  • depth of soil heat flux probes(z_g_soil)
  • height of radiation instruments(zrad)
  • net solar radiation (NR-lite)(r_net)
  • depth of lower m soil probesp(z_m_soil_lower)
  • standard error of mean_m_soil_upper(stderr_mean_m_soil_upper)
  • mean co2 concentration (c)(mean_c)
  • height of lower RH/T sensor(z_lower)
  • Date and time in alternate form(yyyydddhhmmss)
  • Water vapor density (q)(mean_q)
  • variance of c(var_c)
  • depth of middle t soil probesm(z_t_soil_middle)
  • height of instument from tower base(zm)
  • photosynthetic photon flux density (PAR)(ppfd)
  • barometric pressure(bar_pres)
  • upwelling longwave hemispheric irradiance t_rad corrected(r_up_long_hemisp)
  • latitude of instrument tower(site_latitude)
  • mean air temperature, upper level(t_air_upper)
  • average of two lower soil temperature sensors(mean_t_soil_lower)
  • Unit Vector Wind Direction(wdir)
  • standard error of mean_t_soil_upper note maximum of two values used in
    calculation(stderr_mean_t_soil_upper)
  • mean horizontal wind speed(mean_rot_u)
  • Virtual temperature (T)(mean_t)
  • upwelling shortwave hemispheric irradiance t_rad corrected(r_up_short_hemisp)
  • mean relative humidity, lower level(rh_lower)
  • mean air temperature, lower level(t_air_lower)
  • variance of w(var_rot_w)
  • Latent heat flux(le)
  • mean IRGA pressure(mean_p)
  • downwelling shortwave hemispheric irradiance t_rad corrected(r_down_short_hemisp)
  • Friction velocity(ustar)
  • base time(base_time)
  • height of upper RH/T sensor(z_upper)
  • height of base of instrument tower(site_elevation)
  • variance of q(var_q)
  • standard error of mean_g_soil(stderr_mean_g_soil)
  • radiometer body temperature (for longwave correction)(t_rad)
  • longitude of instrument tower(site_longitude)
  • variance of t(var_t)
  • downwelling longwave hemispheric irradiance t_rad corrected(r_down_long_hemisp)
  • average of four upper soil moisture sensors(mean_m_soil_upper)
  • average of up to four soil heat flux sensors(mean_g_soil)
  • total downwelling shortwave radiation (LI-200 sensor)(r_tot)
  • depth of upper t soil probesm(z_t_soil_upper)
  • depth of upper m soil probesm(z_m_soil_upper)
  • Vertical angle of wind(phi)
  • depth of lower t soil probesm(z_t_soil_lower)
  • mean relative humidity, upper level(rh_upper)
  • standard error of mean_m_soil_lower(stderr_mean_m_soil_lower)
  • average of two upper soil temperature sensors(mean_t_soil_upper)
  • Monin-Obukhov length scale(Lmoni)

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DQRID : D041015.2
Start DateStart TimeEnd DateEnd Time
04/11/2001115608/31/20042359
Subject:
SGP/PGS/C1 - Reprocessing User Notes
DataStreams:sgppgsC1.b1
Description:
Precise Gas System (pgs) daily b1 files should have a dimension of 480, corresponding to a 
measurement every 3 minutes. Previously submitted files had a dimension of 481, the last 
time step of each individual file being mistakenly repeated.
Measurements:sgppgsC1.b1:
  • 90% confidence limit of co2ppm(co2ppm_se)
  • Pressure of channel 2(pres2)
  • reading of CO2 in mV(co2mv)
  • reference CO2 reading in mV(ref)
  • calibration coefficient 1 (quadratic fit)(coeff1)
  • calibration coefficient 3 (quadratic fit)(coeff3)
  • longitude of instrument tower(site_longitude)
  • pressure inside the IRGA box measured by the pressure controller(pres_ctrlr)
  • Temperature in refigerator(t_refrig)
  • flow rate measured by the mass flow controller(flow_rate)
  • calibration coefficient 2 (quadratic fit) 90% confidence limit(coeff2_se)
  • p-value of co2 readings during the last 30sec of 3min period of raw data(co2mv_slope_pval)
  • MFRSR channels(channel)
  • Number of measurements for indicated channel(nmeas)
  • calculated concentration of CO2(co2ppm)
  • latitude of instrument tower(site_latitude)
  • calibration coefficient 2 (quadratic fit)(coeff2)
  • Second level of QC, see reject_flag_explanation global attribute(reject_flag)
  • Pressure of channel 1(pres1)
  • Date and time in alternate form(yyyymmddhhmmss)
  • height of base of instrument tower(site_elevation)
  • Slope of CO2 readings during last 30sec of 3min period of raw data(co2mv_slope)
  • flag indicating which channel isotope sample was taken from(iso)
  • base time(base_time)
  • Pressure of channel 3(pres3)
  • calibration coefficient 3 (quadratic fit) 90% confidence limit(coeff3_se)
  • 90% confidence limint of co2mv_slope(co2mv_slope_se)
  • temperature of the IRGA(t_irga)
  • adjusted CO2(adj)
  • r-squared of quadratic fit(r2)
  • Pressure of channel 4(pres4)
  • calibration coefficient 1 (quadratic fit) 90% confidence limit(coeff1_se)
  • First level of QC, see warn_flag_explanation global attribute(warn_flag)
  • standard deviation of co2mv(co2mv_se)

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DQRID : D041026.1
Start DateStart TimeEnd DateEnd Time
12/18/2002000010/12/20042359
Subject:
SGP/CO2FLX/C1 - Reprocess: Units
DataStreams:sgp30co2flx25mC1.b1, sgp30co2flx4mC1.b1, sgp30co2flx60mC1.b1
Description:
Mean CO2 density units are incorrectly labeled as umol m-3. Units should be labeled as 
mmol m-3.
Measurements:sgp30co2flx60mC1.b1:
  • mean co2 concentration (c)(mean_c)
sgp30co2flx4mC1.b1:
  • mean co2 concentration (c)(mean_c)
sgp30co2flx25mC1.b1:
  • mean co2 concentration (c)(mean_c)

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DQRID : D041103.1
Start DateStart TimeEnd DateEnd Time
10/13/2004190010/20/20041800
Subject:
SGP/CO2FLX/C1 - Mean CO2 density incorrect, CO2 flux suspect
DataStreams:sgp30co2flx60mC1.b1
Description:
A problem was identified with the calibration of the instrument over the time period 
October 12, 2004 to October 20, 2004. The offset of the instrument is known to be incorrect 
over this time frame, and a study of the gain of the instrument is underway.
Measurements:sgp30co2flx60mC1.b1:
  • mean co2 concentration (c)(mean_c)
  • WPL corrected CO2 flux(fc_corr)

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DQRID : D050111.1
Start DateStart TimeEnd DateEnd Time
01/05/2005085301/07/20052026
Subject:
SGP/PGS/C1 - Incorrect 60m Data
DataStreams:sgppgsC1.b1
Description:
Precise Gas system (PGS) data at 60m (channel 4) are incorrect. This problem is due to a 
freezing rain and ice storm that hit SGP Central facility on January 5, 2005. The 60m 
tower inlet was clogged with ice and consequently, no air was supplied to the PGS instrument.
Measurements:sgppgsC1.b1:
  • 90% confidence limit of co2ppm(co2ppm_se)
  • p-value of co2 readings during the last 30sec of 3min period of raw data(co2mv_slope_pval)
  • Pressure of channel 4(pres4)
  • reading of CO2 in mV(co2mv)
  • Slope of CO2 readings during last 30sec of 3min period of raw data(co2mv_slope)
  • calculated concentration of CO2(co2ppm)
  • 90% confidence limint of co2mv_slope(co2mv_slope_se)
  • pressure inside the IRGA box measured by the pressure controller(pres_ctrlr)
  • flow rate measured by the mass flow controller(flow_rate)
  • standard deviation of co2mv(co2mv_se)

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DQRID : D051118.1
Start DateStart TimeEnd DateEnd Time
11/24/2004000008/19/20050100
Subject:
SGP/PGS/C1 - Suspicious 4m data
DataStreams:sgppgsC1.b1
Description:
KNF pump for 4m height (channel 2) started to leak on November 24, 2004 and sampled air 
was consequently "contaminated" by indoor air. The pump was replaced on August 19, 2005.
Measurements:sgppgsC1.b1:
  • 90% confidence limit of co2ppm(co2ppm_se)
  • calculated concentration of CO2(co2ppm)

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DQRID : D051118.2
Start DateStart TimeEnd DateEnd Time
07/22/2004000008/19/20050100
Subject:
SGP/PGS/C1 - Suspicious 2m data
DataStreams:sgppgsC1.b1
Description:
KNF pump for 2m height (channel 1) started to leak on July 22, 2004 and sampled air was 
consequently "contaminated" by indoor air. The pump was replaced on August 19, 2005.
Measurements:sgppgsC1.b1:
  • 90% confidence limit of co2ppm(co2ppm_se)
  • calculated concentration of CO2(co2ppm)

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DQRID : D051118.3
Start DateStart TimeEnd DateEnd Time
03/31/2005000008/19/20050100
Subject:
SGP/PGS/C1 - Suspicious 25m and 60m data
DataStreams:sgppgsC1.b1
Description:
KNF pumps for 25m and 60m height (channel 3 and channel 4) started to leak on March 31, 
2005 and sampled air was consequently "contaminated" by indoor air. The pumps were replaced 
on August 19, 2005.
Measurements:sgppgsC1.b1:
  • 90% confidence limit of co2ppm(co2ppm_se)
  • calculated concentration of CO2(co2ppm)

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DQRID : D051118.4
Start DateStart TimeEnd DateEnd Time
04/11/2001115610/31/20052359
Subject:
SGP/PGS/C1 - Updated files
DataStreams:sgppgsC1.b1
Description:
Dew point temperature (dpt) sensor (Vaisala DMT 142) was added to the system on May 24, 
2005 to assess water trapping system efficiency. Consequently, variable "dpt" is filled 
with missing values (-999.99) prior measurements start date (May 24, 2005).
Measurements:sgppgsC1.b1:
  • 90% confidence limit of co2ppm(co2ppm_se)
  • Pressure of channel 2(pres2)
  • reading of CO2 in mV(co2mv)
  • reference CO2 reading in mV(ref)
  • calibration coefficient 1 (quadratic fit)(coeff1)
  • calibration coefficient 3 (quadratic fit)(coeff3)
  • longitude of instrument tower(site_longitude)
  • pressure inside the IRGA box measured by the pressure controller(pres_ctrlr)
  • Temperature in refigerator(t_refrig)
  • flow rate measured by the mass flow controller(flow_rate)
  • calibration coefficient 2 (quadratic fit) 90% confidence limit(coeff2_se)
  • p-value of co2 readings during the last 30sec of 3min period of raw data(co2mv_slope_pval)
  • MFRSR channels(channel)
  • Number of measurements for indicated channel(nmeas)
  • calculated concentration of CO2(co2ppm)
  • latitude of instrument tower(site_latitude)
  • calibration coefficient 2 (quadratic fit)(coeff2)
  • Second level of QC, see reject_flag_explanation global attribute(reject_flag)
  • Pressure of channel 1(pres1)
  • Date and time in alternate form(yyyymmddhhmmss)
  • height of base of instrument tower(site_elevation)
  • Slope of CO2 readings during last 30sec of 3min period of raw data(co2mv_slope)
  • flag indicating which channel isotope sample was taken from(iso)
  • base time(base_time)
  • Pressure of channel 3(pres3)
  • calibration coefficient 3 (quadratic fit) 90% confidence limit(coeff3_se)
  • 90% confidence limint of co2mv_slope(co2mv_slope_se)
  • temperature of the IRGA(t_irga)
  • adjusted CO2(adj)
  • r-squared of quadratic fit(r2)
  • Pressure of channel 4(pres4)
  • calibration coefficient 1 (quadratic fit) 90% confidence limit(coeff1_se)
  • First level of QC, see warn_flag_explanation global attribute(warn_flag)
  • standard deviation of co2mv(co2mv_se)

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DQRID : D990415.6
Start DateStart TimeEnd DateEnd Time
03/15/1999085903/19/19991939
02/03/2002143902/10/20022223
03/09/2002200203/11/20022101
02/22/2003225102/26/20031946
Subject:
SGP/TWR/C1 - Missing data
DataStreams:sgp1440twr60mC1.b1, sgp1twr60mC1.b1, sgp30twr60mC1.b1
Description:
Data are missing and unrecoverable.
Measurements:sgp1twr60mC1.b1:
  • Relative humidity inside the instrument enclosure(rh)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • base time(base_time)
  • Batter Voltage(vbat)
  • Time offset of tweaks from base_time(time_offset)
  • Beam 0 Temperature(temp)
  • lat(lat)
  • Aspirator Flow Status (% of time with proper flow)(aspirator)
  • Dummy altitude for Zeb(alt)
  • lon(lon)
sgp1440twr60mC1.b1:
  • lat(lat)
  • Time of Maximum Relative Humidity(time_max_rh)
  • Time of Minimum Relative Humidity(time_min_rh)
  • Dummy altitude for Zeb(alt)
  • Time of Minimum Temperature(time_min_temp)
  • Time of Maximum Vapor Pressure(time_max_vap_pres)
  • Maximum Vapor Pressure(max_vap_pres)
  • Maximum Temperature(max_temp)
  • Minimum Vapor Pressure(min_vap_pres)
  • Time offset of tweaks from base_time(time_offset)
  • Maximum Relative Humidity(max_rh)
  • Minimum Relative Humidity(min_rh)
  • base time(base_time)
  • lon(lon)
  • Time of Minimum Vapor Pressure(time_min_vap_pres)
  • time(time)
  • Minimum Temperature(min_temp)
  • Time of Maximum Temperature(time_max_temp)
sgp30twr60mC1.b1:
  • Time offset of tweaks from base_time(time_offset)
  • Relative humidity inside the instrument enclosure(rh)
  • Standard Deviation of Air Temperature(sd_temp)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Beam 0 Temperature(temp)
  • Standard Deviation of Relative Humidity(sd_rh)
  • lon(lon)
  • lat(lat)
  • Aspirator Flow Status (% of time with proper flow)(aspirator)
  • Dummy altitude for Zeb(alt)
  • base time(base_time)
  • Standard Deviation of Vapor Pressure(sd_vap_pres)

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DQRID : D990607.1
Start DateStart TimeEnd DateEnd Time
02/12/1999182702/12/19991846
04/30/1999151504/30/19991730
05/19/1999175505/20/19991755
07/02/1999172007/02/19991925
07/16/1999141707/16/19991823
11/16/1999161111/16/19991701
08/14/2000144708/14/20002138
02/01/2001203702/01/20012112
08/03/2001193208/03/20012108
08/08/2001135608/08/20011850
08/01/2002133008/01/20022201
08/02/2002135408/02/20021912
09/10/2002183909/10/20021921
10/31/2002144610/31/20021621
10/31/2002220011/01/20021744
12/17/2002163412/17/20022152
12/18/2002174912/18/20022036
02/21/2003192702/21/20032113
02/22/2003192702/22/20032111
05/15/2003161805/15/20032124
08/05/2003183708/05/20031914
08/14/2003152108/15/20031945
02/09/2004161902/10/20041753
02/11/2004161402/11/20042213
04/26/2004152904/29/20041346
08/05/2004145108/05/20041525
09/27/2004143209/27/20042105
10/12/2004141710/13/20041700
10/20/2004175510/20/20041925
05/24/2005141005/25/20052145
05/18/2006153005/18/20062102
05/22/2006200205/22/20062052
05/24/2006132805/24/20061631
10/05/2006174610/05/20062031
10/11/2006150510/11/20062024
07/26/2007134007/26/20071900
10/01/2007172510/01/20071812
10/03/2007173610/03/20071820
Subject:
SGP/TWR/C1 - W Side of Tower lowered for maintenance
DataStreams:sgp1440twr25mC1.b1, sgp1440twr60mC1.b1, sgp1twr25mC1.b1, sgp1twr60mC1.b1, sgp30twr25mC1.b1,
sgp30twr60mC1.b1
Description:
The west side tower carriages were lowered for maintenance and/or data are offscale during 
routine maintenance.
Measurements:sgp1twr60mC1.b1:
  • Relative humidity inside the instrument enclosure(rh)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Beam 0 Temperature(temp)
sgp1twr25mC1.b1:
  • Beam 0 Temperature(temp)
  • Relative humidity inside the instrument enclosure(rh)
  • Vapor Pressure (kiloPascals)(vap_pres)
sgp30twr25mC1.b1:
  • Relative humidity inside the instrument enclosure(rh)
  • Standard Deviation of Air Temperature(sd_temp)
  • Standard Deviation of Vapor Pressure(sd_vap_pres)
  • Standard Deviation of Relative Humidity(sd_rh)
  • Beam 0 Temperature(temp)
  • Vapor Pressure (kiloPascals)(vap_pres)
sgp1440twr60mC1.b1:
  • Time of Maximum Relative Humidity(time_max_rh)
  • Time of Minimum Relative Humidity(time_min_rh)
  • Time of Minimum Temperature(time_min_temp)
  • Time of Maximum Vapor Pressure(time_max_vap_pres)
  • Maximum Vapor Pressure(max_vap_pres)
  • Maximum Temperature(max_temp)
  • Minimum Vapor Pressure(min_vap_pres)
  • Maximum Relative Humidity(max_rh)
  • Minimum Relative Humidity(min_rh)
  • Time of Minimum Vapor Pressure(time_min_vap_pres)
  • Minimum Temperature(min_temp)
  • Time of Maximum Temperature(time_max_temp)
sgp1440twr25mC1.b1:
  • Maximum Vapor Pressure(max_vap_pres)
  • Maximum Relative Humidity(max_rh)
  • Time of Maximum Temperature(time_max_temp)
  • Time of Minimum Vapor Pressure(time_min_vap_pres)
  • Minimum Relative Humidity(min_rh)
  • Time of Minimum Temperature(time_min_temp)
  • Maximum Temperature(max_temp)
  • Time of Minimum Relative Humidity(time_min_rh)
  • Time of Maximum Relative Humidity(time_max_rh)
  • Minimum Temperature(min_temp)
  • Minimum Vapor Pressure(min_vap_pres)
  • Time of Maximum Vapor Pressure(time_max_vap_pres)
sgp30twr60mC1.b1:
  • Relative humidity inside the instrument enclosure(rh)
  • Standard Deviation of Air Temperature(sd_temp)
  • Vapor Pressure (kiloPascals)(vap_pres)
  • Standard Deviation of Relative Humidity(sd_rh)
  • Beam 0 Temperature(temp)
  • Standard Deviation of Vapor Pressure(sd_vap_pres)

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