Datastream : CO2FLX4M

CO2 Flux Data: 4m samples

Active Dates
2015.07.22 - 2017.03.22

Measurement Categories
Atmospheric Carbon, Atmospheric State, Surface Properties

Originating Instrument
Carbon Dioxide Flux Measurement Systems (CO2FLX)

Measurements

Only measurements considered scientifically relevant are shown below by default.

Show all measurements

Measurement Units Variable
Density of ambient air kg/m^3 air_density ( time )
Specific head at constant pressure of ambient air J/kg/K air_heat_capacity ( time )
Molar volume of ambient air m^3/mol air_molar_volume ( time )
Mean pressure of ambient air, either calculated from high frequency air pressure readings or estimated from on site altitude (barometric pressure) Pa air_pressure ( time )
Mean temperature of ambient air, either calculated from high frequency air temperature readings, or estimated from sonic temperature K air_temperature ( time )
Altitude above mean sea level m alt
Base time in Epoch seconds since 1970-1-1 0:00:00 0:00 base_time
Sensible heat flux to latent heat flux ratio unitless bowen_ratio ( time )
Number of flagged records for chopper count chopper_flag ( time )
Corrected co2 flux micromol/m^2/s co2_flux ( time )
Covariance between vertical wind and variable co2 flux mmol/m^2/s co2_flux_covariance ( time )
Spectral correction factor for co2 flux unitless co2_flux_spectral_correction_factor ( time )
Number of spikes detected and eliminated for variable co2 flux count co2_flux_spikes ( time )
Uncorrected co2 flux micromol/m^2/s co2_flux_uncorrected ( time )
Variance of co2 mmol^2/m^6 co2_flux_variance ( time )
Measured or estimated mixing ratio of co2 micromol/mol co2_mixing_ratio ( time )
Measured or estimated molar density of co2 mmol/m^3 co2_molar_density ( time )
Measured or estimated mole fraction of co2 micromol/ppm co2_mole_fraction ( time )
Time lag used to synchronize co2 time series s co2_time_lag ( time )
Flag to specify whether reported co2 time lag is default or calculated unitless co2_time_lag_state ( time )
Number of flagged records for detector count detector_flag ( time )
Ambient dew point temperature K dew_point_temperature ( time )
Rotated u wind component (mean wind speed) m/s eastward_wind ( time )
Number of spikes detected and eliminated for eastward wind count eastward_wind_spikes ( time )
Wind component along the u anemometer axis m/s eastward_wind_unrotated ( time )
Variance of eastward wind m^2/s^2 eastward_wind_variance ( time )
Evapotranspiration rate mm/hour evapotranspiration_rate ( time )
Friction velocity m/s friction_velocity ( time )
Corrected h2o flux mmol/m^2/s h2o_flux ( time )
Covariance between vertical wind and variable h2o flux mmol/m^2/s h2o_flux_covariance ( time )
Spectral correction factor for h2o flux unitless h2o_flux_spectral_correction_factor ( time )
Number of spikes detected and eliminated for variable h2o flux count h2o_flux_spikes ( time )
Uncorrected h2o flux mmol/m^2/s h2o_flux_uncorrected ( time )
Variance of h2o mmol^2/m^6 h2o_flux_variance ( time )
Measured or estimated mixing ratio of h2o mmol/mol h2o_mixing_ratio ( time )
Measured or estimated molar density of h2o mmol/m^3 h2o_molar_density ( time )
Measured or estimated mole fraction of h2o mmol/mol h2o_mole_fraction ( time )
Time lag used to synchronize h2o time series s h2o_time_lag ( time )
Flag to specify whether reported h2o time lag is default or calculated unitless h2o_time_lag_state ( time )
North latitude degree_N lat
Corrected latent heat flux W/m^2 latent_heat_flux ( time )
Spectral correction for latent heat flux unitless latent_heat_flux_spectral_correction_factor ( time )
Uncorrected latent heat flux W/m^2 latent_heat_flux_uncorrected ( time )
East longitude degree_E lon
Maximum instantaneous wind speed m/s max_wind_speed ( time )
Mean value of RSSI unitless mean_value_RSSI ( time )
Corrected momentum flux kg/m/s^2 momentum_flux ( time )
Spectral correction factor for momentum flux unitless momentum_flux_spectral_correction_factor ( time )
Uncorrected momentum flux kg/m/s^2 momentum_flux_uncorrected ( time )
Monin-Obukov length m monin_obukov_length ( time )
Monin-Obukov stability parameter unitless monin_obukov_stability_parameter ( time )
Rotated v wind component m/s northward_wind ( time )
Number of spikes detected and eliminated for northward wind count northward_wind_spikes ( time )
Wind component along the v anemometer axis m/s northward_wind_unrotated ( time )
Variance of northward wind m^2/s^2 northward_wind_variance ( time )
Second rotation angle degree pitch ( time )
Number of flagged records for pll count pll_flag ( time )
Quality check results on field: Corrected co2 flux unitless qc_co2_flux ( time )
Quality check results on field: Corrected h2o flux unitless qc_h2o_flux ( time )
Quality check results on field: Corrected latent heat flux unitless qc_latent_heat_flux ( time )
Quality check results on field: Corrected momentum flux unitless qc_momentum_flux ( time )
Quality check results on field: Corrected sensible heat flux unitless qc_sensible_heat_flux ( time )
Random error for co2 flux micromol/m^2/s random_error_co2_flux ( time )
Random error for h2o flux mmol/m^2/s random_error_h2o_flux ( time )
Random error for latent heat flux W/m^2 random_error_latent_heat_flux ( time )
Random error for momentum flux kg/m/s^2 random_error_momentum_flux ( time )
Random error for sensible heat flux W/m^2 random_error_sensible_heat_flux ( time )
Ambient relative humidity % relative_humidity ( time )
Scaling temperature K scaling_temperature ( time )
Covariance between vertical_wind and variable scaling_temperature m/K/s scaling_temperature_covariance ( time )
Number of spikes detected and eliminated for variable scaling temperature count scaling_temperature_spikes ( time )
Variance of scaling temperature K^2 scaling_temperature_variance ( time )
Corrected sensible heat flux W/m^2 sensible_heat_flux ( time )
Spectral correction factor for sensible heat flux unitless sensible_heat_flux_spectral_correction_factor ( time )
Uncorrected sensible heat flux W/m^2 sensible_heat_flux_uncorrected ( time )
Mean temperature of ambient air as measured by the anemometer K sonic_temperature ( time )
Number of spikes detected and eliminated for variable sonic temperature count sonic_temperature_spikes ( time )
Ambient specific humidity on a mass basis kg/kg specific_humidity ( time )
Number of flagged records for sync count sync_flag ( time )
Time offset from midnight time ( time )
Time cell bounds time_bounds ( time, bound )
Time offset from base_time time_offset ( time )
Turbulent kinetic energy m^2/s^2 turbulent_kinetic_energy ( time )
Rotated w wind component m/s vertical_wind ( time )
Number of spikes detected and eliminated for upward wind count vertical_wind_spikes ( time )
Wind component along the w anemometer axis m/s vertical_wind_unrotated ( time )
Variance of vertical wind m^2/s^2 vertical_wind_variance ( time )
Ambient mass density of water vapor kg/m^3 water_vapor_density ( time )
Ambient water vapor partial pressure Pa water_vapor_partial_pressure ( time )
Ambient water vapor partial pressure at saturation Pa water_vapor_partial_pressure_saturation ( time )
Ambient water vapor pressure deficit Pa water_vapor_pressure_deficit ( time )
Direction from which the wind blows, with respect to Geographic or Magnetic north degree wind_direction ( time )
Mean wind speed m/s wind_speed ( time )
First rotation angle degree yaw ( time )

Locations

Southern Great Plains
SGPC1 Browse DataCentral Facility, Lamont, OK

Contact(s)

Dave Billesbach
University of Nebraska, Lincoln
associate
(402) 472-7961
dbillesbach1@unl.edu

Stephen Chan
Lawrence Berkeley National Laboratory
associate
510 486 4194
swchan@lbl.gov

Sebastien Biraud
Lawrence Berkeley National Laboratory
510-486-6084
SCBiraud@lbl.gov