Instrument : 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 ultraviolet 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 Restriction Notice (PowerPoint presentation).
Output Value-Added Products
This instrument is an input to the following value-added products, which provide improved measurements or derived quantities.
- 15swfanalbrs1long : Short Wave Flux Analysis: 15-min resolution on BRS data, Long algorithm
- 15swfanalsiros1long : Short Wave Flux Analysis: 15-min resolution on SIROS data, Long algorithm
- 15swfanalsirs1long : Short Wave Flux Analysis: 15-min resolution on SIRS data, Long algorithm
- 15swfanalskyrad1long : Short Wave Flux Analysis: 15-min resolution on SKYRAD data, Long algorithm
- 15swfcldfac1long : Fractional cloud cover, clear-sky and all-sky shortwave flux for each of 25 individual SGP facilities.
- 1swfanalbrs1long : Short Wave Flux Analysis: 1-min resolution on BRS data, Long algorithm
- 1swfanalsiros1long : Short Wave Flux Analysis: 1-min resolution on SIROS data, Long algorithm
- 1swfanalsirs1long : Short Wave Flux Analysis: 1-min resolution on SIRS data, Long algorithm
- 1swfanalskyrad1long : Short Wave Flux Analysis: 1-min resolution on SKYAD data, Long algorithm
- qcrad1long : Surface Radiation Measurement Quality Control testing, including climatologically configurable limits
- qcradbeflux1long : Surface Radiation Measurement (BEFLUX input) QC testing, incl. climatologically configurable limits
- qcradbrs1long : Surface Radiation Measurement (BRS input) QC testing, incl. climatologically configurable limits
- 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
Output Datastreams
- skyrad20s : Sky radiation sensor: 20-second downwelling radiation data
- skyrad60s : Infrared Thermometer: Sky brightness temperature, averaged 60-second
Primary Measurements
The following measurements are those considered scientifically relevant.
- Longwave broadband downwelling irradiance
- Shortwave broadband diffuse downwelling irradiance
- Shortwave broadband direct normal irradiance
- Shortwave broadband total downwelling irradiance
Locations
- North Slope Alaska (NSA)
- Central Facility, Atqasuk AK (C2)
- Central Facility, Barrow AK (C1)
- Tropical Western Pacific (TWP)
- Central Facility, Darwin, Australia (C3)
- Central Facility, Manus I., PNG (C1)
- Central Facility, Nauru Island (C2)
- ARM Mobile Facility (FKB)
- Black Forest, Germany (M1)
- ARM Mobile Facility (GAN)
- Gan Airport, Gan Island, Maldives (M1)
- ARM Mobile Facility (GRW)
- Graciosa Island, Azores, Portugal (M1)
- ARM Mobile Facility (HFE)
- Shouxian, Anhui, China (M1)
- ARM Mobile Facility (NIM)
- Niamey, Niger (M1)
- ARM Mobile Facility (PGH)
- ARIES Observatory, Nainital, Uttarkhand, India (M1)
- ARM Mobile Facility (PVC)
- Highland Center, Cape Cod MA; AMF 1 (M1)
- ARM Mobile Facility (PYE)
- Point Reyes, CA (M1)
- ARM Mobile Facility (SBS)
- Steamboat Springs CO, Valley Site (M1)
Contact(s)
Tom Stoffel
(303) 275-2919
Tom.Stoffel@nrel.gov
Bev Kay
associate
(303) 384-6388
beverly_kay@nrel.gov
Aron Habte
associate
(303) 384-6389
Aron.Habte@nrel.gov
Nicki Hickmon
associate
(630) 252-7662
nhickmon@anl.gov
Michael Ritsche
associate
(630) 252-1554
mtritsche@anl.gov
Mary Anderberg
associate
303-275-4680
mary_anderberg@nrel.gov
Peter Gotseff
associate
(303) 384-6327
peter_gotseff@nrel.gov
Victor Morris
associate
(509) 372-6144
victor.morris@pnnl.gov
Mark Kutchenreiter
associate
303-384-7900
mark.kutchenreiter@nrel.gov