Measurement : Shortwave broadband direct normal irradiance

The rate at which radiant energy in broad bands of wavelengths shorter than approximately 4{mu}m, that comes directly from the Sun without being scattered or absorbed in the atmosphere, passes through a unit area perpendicular to the direction from the Sun.

Categories
Radiometric

Instruments

The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes.

  • ARM Instruments
    • BSRN : Baseline Solar Radiation Network
    • BRS : Broadband Radiometer Station
    • SKYRAD : Sky Radiometers on Stand for Downwelling Radiation
    • SIRS : Solar and Infrared Radiation Station
  • Field Campaign Instruments
    • CAVITY : Absolute Cavity Radiometer
    • RAD-AIR : Airborne Radiometers
    • SMART-RAD : Broadband Radiometers from NASA SMART Trailer
    • NIP : Normal Incident Pyrheliometer

Value-Added Products

  • BEFLUX : Best-Estimate Radiative Flux (Process)
    • BEFLUX1LONG : Radiative Flux: best estimate, after Long
  • DIFFCOR : Correction of Diffuse Shortwave Measurements (Process)
    • SIROS1DUTT : Solar and Infrared Radiation Observing Station (SIROS): 1-min data with Dutton correction
    • SIRS1DUTT : SIRS: derived, correction of downwelling shortwave diffuse hemispheric measurements using Dutton and full algorithm
  • BSRNCALC : Baseline Solar Radiation Network (BSRN): calculated solar irradiances (Process)
    • BSRNCALC : Baseline Solar Radiation Network (BSRN): calculated solar irradiances

Datastreams

  • IRT : Infrared Thermometer Datastreams
    • SKYRAD60S : Sky radiation sensor: 60-second downwelling irradiances
  • BSRN : Baseline Solar Radiation Network Datastreams
    • BSRN : Baseline Solar Radiation Network (BSRN): solar irradiances
  • SIRS : Solar and Infrared Radiation Station Datastreams
    • SIRS60S : Solar and Infrared Radiation Station (SIRS): 60-sec data
    • SIRS : Solar and Infrared Radiation Station (SIRS): broadband shortwave and longwave radiation
  • BRS : Broadband Radiometer Station Datastreams
    • BRS : Broadband Radiometer Station (BRS): broadband shortwave and longwave radiation
    • BRS60S : Broadband Radiometer Station (BRS): 60-second broadband shortwave and longwave radiation
  • SKYRAD : Sky Radiometers on Stand for Downwelling Radiation Datastreams
    • SKYRAD60S : Sky radiation sensor: 60-second downwelling irradiances