Variables Collected from NLAE Flux Sites
This page lists variables collected at the four sites in this network. Each variable is not collected at every site.
Data variables and units
| ID | Units | Details |
|---|---|---|
| batt_volt_avg | V | Average battery voltage [V] |
| co2_avg | mg/m^3 | Average carbon dioxide density [mg / m^3] |
| co2_wpl_h | mg/(m^2 s) | Carbon dioxide Webb et al. term due to (sonic) sensible heat flux [mg / {m^2 s}] |
| co2_wpl_le | mg/(m^2 s) | Carbon dioxide Webb et al. term due to latent heat flux [mg / {m^2 s}] |
| cov_co2_co2 | (mg/m^3)^2 | Variance of carbon dioxide density [(mg / m^3)^2] |
| cov_h2o_h2o | (g/m^3)^2 | Variance of water vapor density from LI-7500 [(g / m^3)^2] |
| cov_ts_ts | C^2 | Variance of sonic temperature [C^2] |
| cov_ux_co2 | mg/(m^2 s) | Covariance of horizontal wind (x-axis) and carbon dioxide density [mg / {m^2 s}] |
| cov_ux_h2o | g/(m^2 s) | Covariance of horizontal wind (x-axis) and water vapor density from LI-7500 [g / {m^2 s}] |
| cov_ux_ts | m C/s | Covariance of horizontal wind (x-axis) and sonic temperature [m C / s] |
| cov_ux_ux | (m/s)^2 | Variance of horizontal wind (x-axis) [(m / s)^2] |
| cov_ux_uy | (m/s)^2 | Covariance of horizontal winds (x-axis and y-axis) [(m / s)^2] |
| cov_uy_co2 | mg/(m^2 s) | Covariance of horizontal wind (x-axis) and carbon dioxide density [mg / {m^2 s}] |
| cov_uy_h2o | g/(m^2 s) | Covariance of horizontal wind (y-axis) and water vapor density from LI-7500 [g / {m^2 s}] |
| cov_uy_ts | m C/s | Covariance of horizontal wind (y-axis) and sonic temperature [m C / s] |
| cov_uy_uy | (m/s)^2 | Variance of horizontal wind (y-axis) [(m / s)^2] |
| cov_uz_co2 | mg/(m^2 s) | Covariance of vertical wind and carbon dioxide density [mg / {m^2 s}] |
| cov_uz_h2o | g/(m^2 s) | Covariance of vertical wind and water vapor density from LI-7500 [g / {m^2 s}] |
| cov_uz_ts | m C/s | Covariance of vertical wind and sonic temperature [m C / s] |
| cov_uz_ux | (m/s)^2 | Covariance of vertical wind and horizontal wind (x-axis) [(m / s)^2] |
| cov_uz_uy | (m/s)^2 | Covariance of vertical wind and horizontal wind (y-axis) [(m / s)^2] |
| cov_uz_uz | (m/s)^2 | Variance of vertical wind [(m / s)^2] |
| fc_irga | mg/(m^2 s) | Carbon dioxide flux without the Webb et al. term [mg / {m^2 s}] |
| fc_wpl | mg/(m^2 s) | Carbon dioxide flux |
| h2o_avg | g/m^3 | Average water vapor density from LI-7500 [g / m^3] |
| h2o_hmp_avg | g/m^3 | Average water vapor density from HMP45C [g / m^3] |
| h2o_wpl_h | W/m^2 | Water vapor Webb et al. term due to (sonic) sensible heat flux [W / m^2] |
| h2o_wpl_le | W/m^2 | Water vapor Webb et al. term due to latent heat flux [W / m^2] |
| hs | W/m^2 | Sensible heat flux using sonic temperature [W / m^2] |
| incoming_lw_tcor | W/m^2 | Incoming [towards earth] Temp. Corrected Longwave Radiation from CNR-1 [W/m^2] |
| incoming_sw | W/m^2 | Incoming [towards earth]Shortwave Radiation from CNR-1 [W/m^2] |
| irt_can_avg | C | Average Canopy Temp. form IRT [Deg C] |
| irt_cb_avg | C | Average IRT body Temp. Used in Apogee correction [Deg C] |
| le_irga | W/m^2 | Latent heat flux without the Webb et al. term [W / m^2] |
| le_wpl | W/m^2 | Latent heat flux |
| outgoing_sw | W/m^2 | Outgoing [away from earth] Shortwave Radiation from CNR-1 [W/m^2] |
| panel_temp_avg | C | Average CR5000 panel temperature [C] |
| par_avg | umol/m^2/s | Average Photoactive radiation |
| press_avg | kPa | Average barometric pressure from LI-7500 [kPa] |
| rain_tot | mm | Total rainfall during period [mm] |
| rho_a_avg | kg/m^3 | Average air density [kg / m^3] |
| rn_long_avg | W/m^2 | Total Longwave Radiation [W/m^2] |
| rn_short_avg | W/m^2 | Total Shortwave Radiation [W/m^2] |
| rn_total_avg | W/m^2 | Net Radiation [W/m^2] |
| rslt_wnd_spd | m/s | Resultant horizontal wind speed [m / s] |
| shf1_avg | W/m^2 | Average Soil Heat Flux in row [W/m^2] |
| shf2_avg | W/m^2 | Average Soil Heat Flux between row [W/m^2] |
| soiltc1_avg | C | Average Soil Temp 2cm [Deg C] |
| soiltc2_avg | C | Average Soil Temp 6cm [Deg C] |
| soiltc3_avg | C | Average Soil Temp 2cm [Deg C] |
| soiltc4_avg | C | Average Soil Temp 6cm [Deg C] |
| solrad_avg | W/m^2 | Average Solar radiation |
| std_wnd_dir | degrees | Standard deviation of wind direction [degrees] |
| tau | kg/(m s^2) | Momentum flux [kg / {m s^2}] |
| terrest_lw_tcor | W/m^2 | Outgoing [away from earth] Temp. Corrected Longwave Radiation from CNR-1 [W/m^2] |
| t_hmp_avg | C | Average HMP45C temperature [C] |
| ts_avg | C | Average sonic temperature [C] |
| u_star | m/s | Friction velocity [m / s] |
| ux_avg | m/s | Average horizontal wind (x-axis) [m / s] |
| uy_avg | m/s | Average horizontal wind (y-axis) [m / s] |
| uz_avg | m/s | Average vertical wind [m / s] |
| wnd_dir_compass | degrees | Wind direction using compass coordinate system [degrees] |
| wnd_dir_csat3 | degrees | Wind direction using the CSAT3’s right handed coordinate system [degrees] |
| wnd_spd | m/s | Horizontal wind speed [m / s] |