wsipatchsummary

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.

Tropical Western Pacific

• Latitude: -0.521
• Longitude: 166.916
• Publication Date: 2001-11-03
• Start Date: 2001-11-03
• End Date: 2003-12-14
• Last Updated: 2005-04-26

https://www.arm.gov/connect-with-arm/organization/instrument-mentors/list#wsi

Adam Theisen

Argonne National Laboratory

http://dx.doi.org/10.5439/1025323
Atmospheric Radiation Measurement (ARM) user facility. 2001, updated hourly. Whole Sky Imager (WSIPATCHSUMMARY). 2001-11-03 to 2003-12-14, Tropical Western Pacific (TWP) Central Facility, Nauru Island (C2). Compiled by A. Theisen. ARM Data Center. Data set accessed at http://dx.doi.org/10.5439/1025323.