tsi: Total Sky Imager

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.



  • Fixed
  • AMF1
  • AMF2
  • AMF3

Related Publications


EK, EA Riley, JM Kleiss, CN Long, L Rihimaki, D Flynn, C Flynn, and LK Berg. 2017. Macrophysical properties of continental cumulus clouds from active and passive remote sensing. In 22th Remote Sensing of Clouds and the Atmosphere, : SPIE.


Niple ER, HE Scott, JA Conant, SH Jones, FJ Iannarilli, and WE Pereira. 2016. "Application of oxygen A-band equivalent width to disambiguate downwelling radiances for cloud optical depth measurement." Atmospheric Measurement Techniques, 9(9), amt-9-4167-2016, 10.5194/amt-9-4167-2016.

Wagner TJ and JM Kleiss. 2016. "Error Characteristics of Ceilometer-Based Observations of Cloud Amount." Journal of Atmospheric and Oceanic Technology, 33(7), 10.1175/jtech-d-15-0258.1.

Huang D, D Yu, and SE Schwartz. 2016. Determination of Cloud Base Height, Wind Velocity, and Short-Range Cloud Structure Using Multiple Sky Imagers Field Campaign Report. Ed. by Robert Stafford, DOE ARM Climate Research Facility. DOE/SC-ARM-16-041.


Jundt R. 2015. ARM Mobile Facility Fact Sheet. DOE/SC-ARM-15-022.

Mechem DB, SE Giangrande, CS Wittman, P Borque, T Toto, and P Kollias. 2015. "Insights from modeling and observational evaluation of a precipitating continental cumulus event observed during the Midlatitude Continental Convective Clouds Experiment field campaign." Journal of Geophysical Research: Atmospheres, 120(5), 10.1002/2014jd022255.

Zhao C and TJ Garrett. 2015. "Effects of Arctic haze on surface cloud radiative forcing." Geophysical Research Letters, 42(2), 10.1002/2014gl062015.


Yano J and TP Lane. 2014. "Convectively generated gravity waves simulated by NAM-SCA." Journal of Geophysical Research: Atmospheres, 119(15), 10.1002/2013jd021419.

Riihimaki LD and CN Long. 2014. "Spatial variability of surface irradiance measurements at the Manus ARM site." Journal of Geophysical Research: Atmospheres, 119(9), 10.1002/2013jd021187.

Mann JA, JC Chiu, RJ Hogan, EJ O'Connor, TS L'Ecuyer, TH Stein, and A Jefferson. 2014. "Aerosol impacts on drizzle properties in warm clouds from ARM Mobile Facility maritime and continental deployments." Journal of Geophysical Research: Atmospheres, 119(7), 10.1002/2013jd021339.

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