BASE data example

Source: R/data.R

Continuous flux/met data (i.e., AmeriFlux BASE data product) for the US-CRT site, as an example for demonstration. Also see AmeriFlux webpage https://ameriflux.lbl.gov/data/aboutdata/data-variables/#base for variable definitions and details.

amf_base

Format

A data frame with 336 rows and 36 variables

Details

  • TIMESTAMP_START - ISO timestamp start of averaging period (YYYYMMDDHHMM)

  • TIMESTAMP_END - ISO timestamp end of averaging period (YYYYMMDDHHMM)

  • CO2 - Carbon Dioxide (CO2) mole fraction in wet air (µmolCO2 mol-1)

  • H2O - Water (H2O) vapor in mole fraction of wet air (mmolH2O mol-1)

  • FC - Carbon Dioxide (CO2) turbulent flux (µmolCO2 m-2 s-1)

  • NEE_PI - Net Ecosystem Exchange (µmolCO2 m-2 s-1)

  • CH4 - Methane (CH4) mole fraction in wet air (nmolCH4 mol-1)

  • FCH4 - Methane (CH4) turbulent flux (nmolCH4 m-2 s-1)

  • H - Sensible heat turbulent flux (W m-2)

  • LE - Latent heat turbulent flux (W m-2)

  • G_1_1_1 - Soil heat flux at horizontal location #1 (W m-2)

  • G_2_1_1 - Soil heat flux at horizontal location #2 (W m-2)

  • WD - Wind direction (Decimal degrees)

  • WS - Wind speed (m s-1)

  • USTAR - Friction velocity (m s-1)

  • ZL - data value

  • MO_LENGTH - Monin-Obukhov Stability parameter (nondimensional)

  • W_SIGMA - Standard deviation of vertical velocity fluctuations (m s-1)

  • V_SIGMA - Standard deviation of lateral velocity fluctuations (m s-1)

  • U_SIGMA - Standard deviation of along-wind velocity fluctuations (m s-1)

  • T_SONIC - Sonic temperature (deg C)

  • T_SONIC_SIGMA - Standard deviation of sonic temperature (deg C)

  • PA - Atmospheric pressure (kPa)

  • RH - Relative humidity (%)

  • TA - Air temperature (deg C)

  • TS_1_1_1 - Soil temperature at horizontal location #1 (deg C)

  • TS_2_1_1 - Soil temperature at horizontal location #2 (deg C)

  • WTD - Water table depth (m)

  • SWC - Soil water content (%)

  • NETRAD - Net radiation (W m-2)

  • PPFD_IN - Photosynthetic photon flux density, incoming (µmolPhoton m-2 s-1)

  • SW_IN - Shortwave radiation, incoming (W m-2)

  • SW_OUT - Shortwave radiation, outgoing (W m-2)

  • LW_IN - Longwave radiation, incoming (W m-2)

  • LW_OUT - Longwave radiation, outgoing (W m-2)

  • P - Rainfall (mm)