irsiircldmask

The infrared sky imager (IRSI) measures cloud fraction and precipitable water vapor. The IRSI captures hemispheric sky images and provide time series retrievals of fractional sky cover during both day and night. The instrument provides diurnal sky imagery in the mid-infrared atmospheric window and imagery during daylight hours in the visible wavelengths for cloud retrievals. The software automatically identifies cloudy and clear regions and calculates fractional sky cover.

Southern Great Plains

• Latitude: 36.607322
• Longitude: -97.487643
• Publication Date: 2014-05-23
• Start Date: 2014-05-23
• End Date: 2020-11-30
• Last Updated: 2020-12-03

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

Victor Morris

Pacific Northwest National Laboratory

Donna Flynn

Pacific Northwest National Laboratory

http://dx.doi.org/10.5439/1482661
Atmospheric Radiation Measurement (ARM) user facility. 2014, updated hourly. Infra-Red Sky Imager (IRSIIRCLDMASK). 2014-05-23 to 2020-11-30, Southern Great Plains (SGP) Central Facility, Lamont, OK (C1). Compiled by V. Morris and D. Flynn. ARM Data Center. Data set accessed at http://dx.doi.org/10.5439/1482661.