DQRID : D040217.2
Start DateStart TimeEnd DateEnd Time
12/18/2002000002/17/20040000
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Subject:
SGP/CO2FLX/C1 - Reprocessing User Notes
DataStreams:sgp30co2flx25mC1.b1, sgp30co2flx60mC1.b1, sgp30co2flx4mmetC1.b1, sgp30co2flx4mC1.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.
Suggestions: 
null
Measurements:sgp30co2flx4mC1.b1:
  • start of integration interval(yyyydddhhmmss)
  • variance of t(var_t)
  • variance of c(var_c)
  • Monin-Obukhov length scale(Lmoni)
  • variance of q(var_q)
  • friction velocity(ustar)
  • height of instument from tower base(zm)
  • mean co2 concentration (c)(mean_c)
  • WPL corrected CO2 flux(fc_corr)
  • WPL corrected latent heat flux(le)
  • fractional day of the year(doy)
  • corrected sensible heat flux(h)
  • height of base of instrument tower(site_elevation)
  • longitude of instument location(site_longitude)
  • latitude of instument location(site_latitude)
  • Rotated variance u(var_rot_u)
  • variance of v(var_rot_v)
  • rotated variance w(var_rot_w)
  • Time offset from base_time(time_offset)
  • Wind Direction(wdir)
  • Rotated mean u(mean_rot_u)
  • mean water vapor concentration (q)(mean_q)
  • mean IRGA pressure(mean_p)
  • mean sonic temperature (t), i.e. virtual temperature(mean_t)
  • additive WPL LE correction to c flux(fc_wpl_le)
  • additive WPL H correction to c flux(fc_wpl_h)
  • rotation to zero v(phi)
  • rotation to zero w(theta)
  • base time in epoch(base_time)
more
sgp30co2flx25mC1.b1:
  • additive WPL LE correction to c flux(fc_wpl_le)
  • height of instument from tower base(zm)
  • additive WPL H correction to c flux(fc_wpl_h)
  • variance of v(var_rot_v)
  • rotated variance w(var_rot_w)
  • Rotated variance u(var_rot_u)
  • Wind Direction(wdir)
  • rotation to zero w(theta)
  • fractional day of the year(doy)
  • Monin-Obukhov length scale(Lmoni)
  • Time offset from base_time(time_offset)
  • height of base of instrument tower(site_elevation)
  • base time in epoch(base_time)
  • rotation to zero v(phi)
  • corrected sensible heat flux(h)
  • longitude of instument location(site_longitude)
  • mean co2 concentration (c)(mean_c)
  • WPL corrected CO2 flux(fc_corr)
  • mean IRGA pressure(mean_p)
  • mean water vapor concentration (q)(mean_q)
  • mean sonic temperature (t), i.e. virtual temperature(mean_t)
  • WPL corrected latent heat flux(le)
  • variance of q(var_q)
  • variance of t(var_t)
  • Rotated mean u(mean_rot_u)
  • variance of c(var_c)
  • start of integration interval(yyyydddhhmmss)
  • latitude of instument location(site_latitude)
  • friction velocity(ustar)
more
sgp30co2flx60mC1.b1:
  • rotation to zero w(theta)
  • corrected sensible heat flux(h)
  • height of instument from tower base(zm)
  • fractional day of the year(doy)
  • Wind Direction(wdir)
  • longitude of instument location(site_longitude)
  • WPL corrected CO2 flux(fc_corr)
  • Rotated variance u(var_rot_u)
  • Time offset from base_time(time_offset)
  • variance of v(var_rot_v)
  • additive WPL H correction to c flux(fc_wpl_h)
  • rotated variance w(var_rot_w)
  • rotation to zero v(phi)
  • Monin-Obukhov length scale(Lmoni)
  • additive WPL LE correction to c flux(fc_wpl_le)
  • WPL corrected latent heat flux(le)
  • mean co2 concentration (c)(mean_c)
  • height of base of instrument tower(site_elevation)
  • mean water vapor concentration (q)(mean_q)
  • mean IRGA pressure(mean_p)
  • mean sonic temperature (t), i.e. virtual temperature(mean_t)
  • variance of q(var_q)
  • variance of c(var_c)
  • Rotated mean u(mean_rot_u)
  • friction velocity(ustar)
  • start of integration interval(yyyydddhhmmss)
  • base time in epoch(base_time)
  • latitude of instument location(site_latitude)
  • variance of t(var_t)
more
sgp30co2flx4mmetC1.b1:
  • standard error of mean_t_soil_upper note maximum of two values used in
    calculation(stderr_mean_t_soil_upper)
  • depth of upper t soil probesm(z_t_soil_upper)
  • height of instument from tower base(zm)
  • corrected sensible heat flux(h)
  • Rotated mean u(mean_rot_u)
  • average of up to four soil heat flux sensors(mean_g_soil)
  • additive WPL H correction to c flux(fc_wpl_h)
  • downwelling longwave hemispheric irradiance t_rad corrected(r_down_long_hemisp)
  • Total precipitation over one minute sampling period(precip)
  • rotated variance w(var_rot_w)
  • mean relative humidity, lower level(rh_lower)
  • variance of v(var_rot_v)
  • depth of lower m soil probesp(z_m_soil_lower)
  • Rotated variance u(var_rot_u)
  • friction velocity(ustar)
  • standard error of mean_t_soil_middle note maximum of two values used in
    calculation(stderr_mean_t_soil_middle)
  • mean IRGA pressure(mean_p)
  • mean water vapor concentration (q)(mean_q)
  • depth of middle t soil probesm(z_t_soil_middle)
  • mean sonic temperature (t), i.e. virtual temperature(mean_t)
  • longitude of instument location(site_longitude)
  • standard error of mean_t_soil_lower note maximum of two values used in
    calculation(stderr_mean_t_soil_lower)
  • standard error of mean_g_soil(stderr_mean_g_soil)
  • WPL corrected CO2 flux(fc_corr)
  • depth of soil heat flux probes(z_g_soil)
  • mean co2 concentration (c)(mean_c)
  • WPL corrected latent heat flux(le)
  • height of upper RH/T sensor(z_upper)
  • average of two middle soil temperature sensors(mean_t_soil_middle)
  • net solar radiation (NR-lite)(r_net)
  • rotation to zero v(phi)
  • height of radiation instruments(zrad)
  • downwelling shortwave hemispheric irradiance t_rad corrected(r_down_short_hemisp)
  • height of lower RH/T sensor(z_lower)
  • average of two upper soil temperature sensors(mean_t_soil_upper)
  • base time in epoch(base_time)
  • fractional day of the year(doy)
  • mean relative humidity, upper level(rh_upper)
  • variance of t(var_t)
  • upwelling longwave hemispheric irradiance t_rad corrected(r_up_long_hemisp)
  • depth of upper m soil probesm(z_m_soil_upper)
  • Monin-Obukhov length scale(Lmoni)
  • variance of q(var_q)
  • mean air temperature, upper level(t_air_upper)
  • variance of c(var_c)
  • upwelling shortwave hemispheric irradiance t_rad corrected(r_up_short_hemisp)
  • total downwelling shortwave radiation (LI-200 sensor)(r_tot)
  • average of two lower soil temperature sensors(mean_t_soil_lower)
  • mean air temperature, lower level(t_air_lower)
  • average of four lower soil moisture sensors(mean_m_soil_lower)
  • standard error of mean_m_soil_upper(stderr_mean_m_soil_upper)
  • rotation to zero w(theta)
  • height of base of instrument tower(site_elevation)
  • additive WPL LE correction to c flux(fc_wpl_le)
  • standard error of mean_m_soil_lower(stderr_mean_m_soil_lower)
  • radiometer body temperature (for longwave correction)(t_rad)
  • start of integration interval(yyyydddhhmmss)
  • Time offset from base_time(time_offset)
  • average of four upper soil moisture sensors(mean_m_soil_upper)
  • Wind Direction(wdir)
  • photosynthetic photon flux density (PAR)(ppfd)
  • depth of lower t soil probesm(z_t_soil_lower)
  • Barometric pressure(bar_pres)
  • latitude of instument location(site_latitude)
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