Instrument : Sky Radiometers on Stand for Downwelling Radiation (SKYRAD)

Instrument Categories
Radiometric

Picture of the SKYRAD
Picture of the SKYRAD

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 : Sky radiation sensor: 60-second downwelling irradiances

Primary Measurements

The following measurements are those considered scientifically relevant.

Locations

Eastern North Atlantic
ENAC1Browse DataGraciosa Island, Azores, Portugal
North Slope Alaska
NSAC1Browse DataCentral Facility, Barrow AK
NSAC2Browse DataCentral Facility, Atqasuk AK
Tropical Western Pacific
TWPC1Browse DataCentral Facility, Manus I., PNG
TWPC2Browse DataCentral Facility, Nauru Island
TWPC3Browse DataCentral Facility, Darwin, Australia
ARM Mobile Facility
FKBM1Browse DataBlack Forest, Germany
GANM1Browse DataGan Airport, Gan Island, Maldives
GRWM1Browse DataGraciosa Island, Azores, Portugal
HFEM1Browse DataShouxian, Anhui, China
MAOM1Browse DataManacapuru, Amazonas, Brazil; AMF1
NIMM1Browse DataNiamey, Niger
OLIM1Browse DataOliktok Point, Alaska
PGHM1Browse DataARIES Observatory, Nainital, Uttarkhand, India
PVCM1Browse DataHighland Center, Cape Cod MA; AMF 1
PYEM1Browse DataPoint Reyes, CA
SBSM1Browse DataSteamboat Springs CO, Valley Site
TMPM1Browse DataU. of Helsinki Research Station (SMEAR II), Hyytiala, Finland; AMF2

Contact(s)

Manajit Sengupta
303-275-3706
Manajit.Sengupta@nrel.gov

Aron Habte
associate
(303) 384-6389
Aron.Habte@nrel.gov

Ibrahim Reda
associate
(303) 384-6385
ibrahim.reda@nrel.gov

Mary Anderberg
associate
303-275-4680
mary.anderberg@nrel.gov

Mike Dooraghi
associate
(303) 384-6329
mike.dooraghi@nrel.gov

Peter Gotseff
associate
(303) 384-6327
peter.gotseff@nrel.gov

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

Afshin Andreas
associate
(303) 384-6383
afshin.andreas@nrel.gov

Mark Kutchenreiter
associate
303-384-7900
mark.kutchenreiter@nrel.gov