Instrument : IRT

Infrared Thermometer

Instrument Categories
Radiometric, Surface/Subsurface Properties

General Overview

Picture of the Infrared Thermometer (IRT)

The Infrared Thermometer (IRT) is a ground-based radiation pyrometer that provides measurements of the equivalent blackbody brightness temperature of the scene in its field of view. The downwelling version has a narrow field of view for measuring sky temperature and for detecting clouds. The upwelling version has a wide field of view for measuring the narrowband radiating temperature of the ground surface.

Output Datastreams

  • irt : Infrared Thermometer: Sky brightness temperature
  • irt10m : Infrared Thermometer: Ground surface temperature averaged 60-sec at 10-meter height
  • irt200ms : Infrared Thermometer: Sky brightness temperature, 5-Hz instantaneous
  • irt25m : Infrared Thermometer: Ground surface temperature, averaged 60-second at 25-meter height
  • irt2s : Infrared Thermometer: Sky brightness temperature, instantaneous 2-second

Primary Measurements

The following measurements are those considered scientifically relevant. Refer to the datastream (netCDF) file headers for the list of all available measurements, including those recorded for diagnostic or quality assurance purposes.

Locations

  • North Slope Alaska (NSA)
    • Central Facility, Atqasuk AK (C2)
    • Central Facility, Barrow AK (C1)
  • Southern Great Plains (SGP)
    • Ashton, KS (E9)
    • Byron, OK (E11)
    • Central Facility, Lamont, OK (C1)
    • Coldwater, KS (E8)
    • Cordell, OK (E22)
    • Cyril, OK (E24)
    • Earlsboro, OK (E27)
    • El Reno, OK (E19)
    • Elk Falls, KS (E7)
    • Halstead, KS (E5)
    • Hillsboro, KS (Extended) (E2)
    • Lamont, OK (Extended) (E13)
    • Larned, KS (E1)
    • LeRoy, KS (E3)
    • Meeker, OK (Extended) (E20)
    • Morris, OK (Extended) (E18)
    • Okmulgee, OK (E21)
    • Pawhuska, OK (E12)
    • Plevna, KS (E4)
    • Ringwood, OK (E15)
    • Towanda, KS (E6)
    • Tyro, KS (E10)
    • Vici, OK (Extended) (E16)
  • SHEBA (Surface HEat Budget of the Arctic) (SHB)
    • Ice Station SHEBA (C1)
  • Tropical Western Pacific (TWP)
    • Central Facility, Darwin, North Australia (C3)
    • Central Facility, Manus I., PNG (C1)
    • Central Facility, Nauru Island (C2)
  • ARM Mobile Facility (FKB)
    • Black Forest, Germany (M1)
  • ARM Mobile Facility (NIM)
    • Niamey, Niger (M1)
  • ARM Mobile Facility (PYE)
    • Point Reyes, CA (M1)

Contact(s)

Victor Morris
(509) 372-6144
victor.morris@pnl.gov