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.
| Facility Name | Instrument Start Date |
|---|---|
| Graciosa Island, Azores, Portugal | 2013-10-01 |
| Central Facility, Lamont, OK | 2000-07-01 |
| Lamont, OK (Extended, Shipping) | 2016-12-15 |
| Andenes, Norway; AMF1 (main site for COMBLE) | 2019-09-11 |
| Central Facility, Barrow AK | 2006-04-25 |
| Oliktok Point, Alaska; AMF3 | 2013-08-30 |
Lim K, L Riihimaki, Y Shi, D Flynn, J Kleiss, L Berg, W Gustafson, Y Zhang, and K Johnson. 2019. "Long-term retrievals of cloud type and fair-weather shallow cumulus events at the ARM SGP site." Journal of Atmospheric and Oceanic Technology, , 10.1175/JTECH-D-18-0215.1. ONLINE.
Boyd S, S Sorenson, S Richard, M King, and M Greenslit. 2019. "Analysis algorithm for sky type and ice halo recognition in all-sky images." Atmospheric Measurement Techniques, 12(8), 10.5194/amt-12-4241-2019.
Yang W, A Marshak, and G Wen. 2019. "Cloud edge properties measured by the ARM shortwave spectrometer over ocean and land." Journal of Geophysical Research: Atmospheres, , doi: 10.1029/2019JD030622. ONLINE.
Research Highlight
Jensen M, E Bruning, D Collins, A Fridlind, P Kollias, C Kuang, D Rosenfeld, A Ryzhkov, A Varble, SD Brooks, S Collis, E Defer, J Fan, J Flynn, S Giangrande, R Griffin, J Hu, R Jackson, M Kumjian, T Logan, T Matsui, G McFarquhar, C Nowotarski, J Quaas, M Oue, R Sheesley, J Snyder, P Stier, S Usenko, S van den Heever, M van Lier Walqui, Y Wang, Y Xu, and G Zhang. 2019. Tracking Aerosol Convection Interactions ExpeRiment (TRACER) Science Plan. Ed. by Robert Stafford, DOE/SC-ARM-19-017.
McFarquhar G, R Marchand, C Bretherton, S Alexander, A Protat, S Siems, R Wood, and P DeMott. 2019. Measurements of Aerosols, Radiation, and Clouds over the Southern Ocean (MARCUS) Field Campaign Report. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-19-008.
Noble S and J Hudson. 2019. "Effects of Continental Clouds on Surface Aitken and Accumulation Modes." Journal of Geophysical Research: Atmospheres, 124(10), doi:10.1029/2019JD030297.
Neggers R, P Griewank, and T Heus. 2019. "Powerlaw scaling in the internal variability of cumulus cloud size distributions due to subsampling and spatial organization." Journal of the Atmospheric Sciences, 76(6), doi:10.1175/JAS-D-18-0194.1.
Fast J, L Berg, L Alexander, D Bell, E D’Ambro, J Hubbe, C Kuang, J Liu, C Long, A Matthews, F Mei, R Newsom, M Pekour, T Pinterich, B Schmid, S Schobesberger, J Shilling, J Smith, S Springston, K Suski, J Thornton, J Tomlinson, J Wang, H Xiao, and A Zelenyuk. 2018. "Overview of the HI-SCALE Field Campaign: A New Perspective on Shallow Convective Clouds." Bulletin of the American Meteorological Society, 100(5), 10.1175/BAMS-D-18-0030.1.
Research Highlight
Kassianov E, EA Riley, JM Kleiss, L Riihimaki, CN Long, V Morris, and LK Berg. 2018. Shallow cumulus macrophysical properties at midcontinental US site: integrated multiyear active and passive observations. In 23th Remote SEnsing of Clouds and the Atmosphere. SPIE, Ed. by A Comeron, et al, Bellingham, WA: SPIE.
Kleiss J, E Riley, C Long, L Riihimaki, L Berg, V Morris, and E Kassianov. 2018. "Cloud Area Distributions of Shallow Cumuli: A New Method for Ground-Based Images." Atmosphere, 9(7), 10.3390/atmos9070258.
Research Highlight