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 | Start Date |
|---|---|
| Central Facility, Lamont, OK | 2000-07-01 |
| Gunnison, CO; AMF2 (main site for SAIL) | 2021-09-01 |
| Central Facility, Barrow AK | 2006-04-25 |
| Houston, TX; AMF1 (main site for TRACER) | 2021-04-14 |
| Lamont, OK (Extended, Shipping) | 2016-12-15 |
| Graciosa Island, Azores, Portugal | 2013-10-01 |
Villefranque N and R Hogan. 2021. "Evidence for the 3D radiative effects of boundary‐layer clouds from observations of direct and diffuse surface solar fluxes." Geophysical Research Letters, , e2021GL093369, 10.1029/2021GL093369. ONLINE.
Russell LM, D Lubin, I Silber, E Eloranta, J Muelmenstaedt, S Burrows, A Aiken, D Wang, M Petters, M Miller, A Ackerman, A Fridlind, M Witte, M Lebsock, D Painemal, R Chang, J Liggio, and M Wheeler. 2021. Eastern Pacific Cloud Aerosol Precipitation Experiment (EPCAPE) Science Plan. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-21-009.
Williams C, K Johnson, S Giangrande, J Hardin, R Öktem, and D Romps. 2021. "Identifying insects, clouds, and precipitation using vertically pointing polarimetric radar Doppler velocity spectra." Atmospheric Measurement Techniques, 14(6), 10.5194/amt-14-4425-2021.
Romps D, R Öktem, S Endo, and A Vogelmann. 2021. "On the lifecycle of a shallow cumulus cloud: Is it a bubble or plume, active or forced?" Journal of the Atmospheric Sciences, , 10.1175/JAS-D-20-0361.1. ONLINE.
Research Highlight
Shupe M, D Chu, D Costa, C Cox, J Creamean, G de Boer, K Dethloff, R Engelmann, M Gallagher, E Hunke, W Maslowski, A McComiskey, J Osborn, O Persson, H Powers, K Pratt, D Randall, A Solomon, M Tjernstrom, D Turner, J Uin, T Uttal, J Verlinde, and D Wagner. 2021. Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) Field Campaign Report. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-21-007.
Feldman D, A Aiken, W Boos, R Carroll, V Chandrasekar, W Collins, S Collis, J Deems, P DeMott, J Fan, A Flores, D Gochis, J Harrington, M Kumjian, LR Leung, T O'Brien, M Raleigh, A Rhoades, SM Skiles, J Smith, R Sullivan, P Ullrich, A Varble, and K Williams. 2021. Surface Atmosphere Integrated Field Laboratory (SAIL) Science Plan. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-21-004.
Varble A, S Nesbitt, P Salio, J Hardin, N Bharadwaj, P Borque, P DeMott, Z Feng, T Hill, J Marquis, A Matthews, F Mei, R Öktem, V Castro, L Goldberger, A Hunzinger, K Barry, S Kreidenweis, G McFarquhar, L McMurdie, M Pekour, H Powers, D Romps, C Saulo, B Schmid, J Tomlinson, S van den Heever, A Zelenyuk, Z Zhang, and E Zipser. 2021. "Utilizing a Storm-Generating Hotspot to Study Convective Cloud Transitions: The CACTI Experiment." Bulletin of the American Meteorological Society, , 10.1175/BAMS-D-20-0030.1. ONLINE.
Sedlar J, A Igel, and H Telg. 2021. "Processes contributing to cloud dissipation and formation events on the North Slope of Alaska." Atmospheric Chemistry and Physics, 21(5), 10.5194/acp-21-4149-2021.
Liu W, Y Liu, X Zhou, Y Xie, Y Han, S Yoo, and M Sengupta. 2021. "Use of physics to improve solar forecast: Physics-informed persistence models for simultaneously forecasting GHI, DNI, and DHI." Solar Energy, 215, 10.1016/j.solener.2020.12.045.
Liu W, Y Liu, X Zhou, Y Xie, Y Han, S Yoo, and M Sengupta. 2021. "Use of physics to improve solar forecast: Physics-informed persistence models for simultaneously forecasting GHI, DNI, and DHI." Solar Energy, 215, 10.1016/j.solener.2020.12.045.
Research Highlight