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

Instrument Categories
Radiometric

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 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.

Locations

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, 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 (PYE)
- Point Reyes, CA (M1)
ARM Mobile Facility (SBS)
- Steamboat Springs CO, Valley Site (M1)