
1) Local forecasting system 2) Weather radar system
Found on
https://www.crosswordclues.com/clue/sodar

SODAR (SOnic Detection And Ranging), also written as sodar, is a meteorological instrument used as a wind profiler to measure the scattering of sound waves by atmospheric turbulence. SODAR systems are used to measure wind speed at various heights above the ground, and the thermodynamic structure of the lower layer of the atmosphere. Sodar systems ...
Found on
http://en.wikipedia.org/wiki/SODAR

(from the article `Sikhism`) ...an early-morning bathe. The culmination of its 38 stanzas describes the ascent of the spirit through five stages, finally reaching the realm of ...
Found on
http://www.britannica.com/eb/a-z/s/118

Sonic Detection and Ranging.
Found on
https://www.encyclo.co.uk/local/22831
No exact match found.