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- The whole-sky imager (WSI) is an automated imager used for assessing and documenting cloud fields and cloud field dynamics. The WSI is a ground-based electronic imaging system that monitors the upper hemisphere. It is a passive, i.e., non-emissive, system that acquires images of the sky dome through three spectral filters (neutral, red, and blue). From these sky images, we can assess the presence, distribution, shape, and radiance of clouds over the entire sky using automated cloud decision algorithms and related processing. The current WSI model (EO System 6) is capable of image acquisition under daylight, moonlight, and starlight conditions.
Information obtained from http://www.arm.gov/
Group: Instrument_Details
Entry_ID: WSI
Group: Instrument_Identification
Instrument_Category: Earth Remote Sensing Instruments
Instrument_Class: Passive Remote Sensing
Instrument_Type: Photon/Optical Detectors
Short_Name: WSI
Long_Name: Whole-Sky Imager
End_Group
Online_Resource: http://www.arm.gov/instruments/instrument_iop.php?id=wsi
Creation_Date: 2008-07-17
Group: Instrument_Logistics
Instrument_Owner: Atmospheric Radiation Measurement (ARM) Program, US Dept of Energy
End_Group
End_Group
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