{"ob_id":3598,"uuid":"87c8ffb5c9f14d3081aec7df80a050a2","title":"Chilbolton Facility for Atmospheric and Radio Research (CFARR) 905 nm Vaisala CT75K Lidar Ceilometer","abstract":"The Vaisala CT75K is a lidar ceilometer system that makes elastic scattering measurements of clouds and aerosols. It operates at 905 nm and comprises four transmitter/receiver units that operate simultaneously. By ceilometer standards it has relatively high sensitivity, and so has the ability to detect ice as well as liquid water clouds. It is a low maintenance system capable of virtually unattended operation and is operated continuously at Chilbolton. It is normally operated close to vertically pointing, typically around 4° off zenith, to reduce specular reflections from ice clouds.","keywords":"","identifier_set":["https://catalogue.ceda.ac.uk/api/v2/identifiers/2442/?format=json","https://catalogue.ceda.ac.uk/api/v2/identifiers/2443/?format=json"],"instrumentType":"instrument","subInstrument":[],"responsiblepartyinfo_set":["https://catalogue.ceda.ac.uk/api/v2/rpis/15176/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/15177/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/46925/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/46926/?format=json"]}