A laser disdrometer (LDIS) measures the drop size spectra and fall velocity of hydrometeors during precipitation events. The passage of hydrometeors through a horizontal area positioned between an eye-safe laser and an array detector results in blockage of the laser beam in proportion to the size of the drop or particle. In addition to drop/particle size and fall speed, precipitation type is classified.
ARM also deploys video disdrometers (VDIS).
| Facility Name | Start Date |
|---|---|
| Gunnison, CO; Supplemental Facility 2 | 2021-09-03 |
| Lamont, OK (NW radar wind profiler site, Intermediate / Auxiliary) | 2016-11-28 |
| Billings, OK (SE radar wind profiler site, Intermediate / Auxiliary) | 2016-11-28 |
| Tonkawa, OK (NE radar wind profiler site, Intermediate / Auxiliary) | 2016-12-05 |
| Barrow, Alaska (71.325, -156.608, 5) | 2018-09-30 |
| Lamont, OK (Extended and Co-located with C1) | 2016-11-04 |
| Gunnison, CO; AMF2 (main site for SAIL) | 2021-09-01 |
| Central Facility, Barrow AK | 2017-04-28 |
| Central Facility, Lamont, OK | 2016-11-02 |
| Graciosa Island, Azores, Portugal | 2014-02-27 |
Dorsey KS. 2022. Cloud And Precipitation Experiment at Kennaook. Ed. by Michelle E Prichard, ARM user facility. DOE/SC-ARM-22-006. 10.2172/1902732.
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Liu L, J Ye, S Li, S Hu, and Q Wang. 2022. "A Novel Machine Learning Algorithm for Cloud Detection Using AERI Measurement Data." Remote Sensing, 14(11), 10.3390/rs14112589.