lpm

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).

Precipitation spectrum from disdrometer data

North Slope Alaska - Barrow, Alaska, extended facility colocated at main site

• Latitude: 71.323
• Longitude: -156.615
• Publication Date: 2018-09-30
• Start Date: 2018-09-30
• End Date: 2024-04-28
• Last Updated: 2024-04-30

https://www.arm.gov/connect-with-arm/organization/instrument-mentors/list#ldis

Matthew Sturm

University of Alaska Fairbanks

https://doi.org/10.5439/1390571
Atmospheric Radiation Measurement (ARM) user facility. 2018. Laser Disdrometer (LPM). 2018-09-30 to 2024-04-28, North Slope Alaska (NSA) Barrow, Alaska, extended facility colocated at main site (E10). Compiled by E. Cromwell, J. Delamere, D. Wang, M. Sturm, Y. Shi, K. Irving and M. Mockaitis. ARM Data Center. Data set accessed at http://dx.doi.org/10.5439/1390571.