An official Website of the United States government Here's how you
know
The world’s premier ground-based observations facility advancing atmospheric and climate research
TSI
The total sky imager (TSI) measures the fraction of the sky view covered by clouds.
It provides time series of hemispheric sky images during daylight hours and retrievals of fractional sky cover for periods when the solar elevation is greater than 10 degrees. To view current sky cover retrievals at the ARM sites, see the TSI most recent sky images.
Follow Us:
[social media icons]
Keep up with the Atmospheric Observer
Updates on ARM news, events, and opportunities delivered to your inbox
ARM User Profile
ARM welcomes users from all institutions and nations. A free ARM user account is needed to access ARM Data.
Atmospheric Radiation Measurement (ARM) | Reviewed
May 2024