Sky Radiometers on Stand for Downwelling Radiation (SKYRAD)
Instrument Categories: Radiometric
General Overview
The Sky Radiation (SKYRAD) collection of radiometers provides each Atmospheric Radiation and Cloud Station (ARCS) with continuous measurements of broadband shortwave (solar), longwave (infrared), and ultra violet irradiances for downwelling components. These 1-minute data are collected from a network of stations to help determine the total radiative energy exchange within the Tropical Western Pacific and North Slope of Alaska.
NOTE: See ARM Pyrgeometer Calibrations & Field Measurements: Information Regarding the Data Restricton Notice (PowerPoint presentation).
Primary Measurements Taken
The following measurements are those considered scientifically relevant. Refer to the netCDF File Header Descriptions (Data Object Design Files) for the list of all available measurements, including those recorded for diagnostic or quality assurance purposes.
- Cloud fraction
- Longwave broadband downwelling irradiance
- Shortwave broadband diffuse downwelling irradiance
- Shortwave broadband direct normal irradiance
- Shortwave broadband total downwelling irradiance
Available Value-Added Products
This instrument is an input to the following value-added products, which provide improved measurements or derived quantities.
- 15swfanalskyrad1long - Short Wave Flux Analysis: 15-min resolution on SKYRAD data, Long algorithm
- 1swfanalskyrad1long - Short Wave Flux Analysis: 1-min resolution on SKYAD data, Long algorithm
- skyrad1dutt - Sky radiation sensor: 1-min data with Dutton correction
Available Datastreams
- skyrad20s - Sky radiation sensor: 20-second downwelling radiation data
- skyrad60s - Infrared Thermometer: Sky brightness temperature, averaged 60-second
Sites / Facilities
Note: Click the "
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- North Slope Alaska (NSA)
- Central Facility, Atqasuk AK (C2)
- Central Facility, Barrow AK (C1)
- 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)
Mentor(s)
Tom Stoffel
(303) 384-6395
thomas_stoffel@nrel.gov
Bev Kay
associate
(303) 384-6388
beverly_kay@nrel.gov
Michael Ritsche
associate
(630) 252-1554
mtritsche@anl.gov
Victor Morris
associate
(509) 372-6144
victor.morris@pnl.gov
Mary Anderberg
associate
303-275-4680
mary_anderberg@nrel.gov
Peter Gotseff
associate
(303) 384-6327
peter_gotseff@nrel.gov
