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pl23_wea03674.jpg

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https://www.noaa.gov/media/digital-library-photo/pl23wea03674jpg

Description

Weather Service Bulletin No. 8, 1949. P. 22. Cloud base and topradar indicator developed allowing cloud heights to be determined directly above the observer.

Credit

Headquarters Air Weather Service; Courtesy of the family of Nels Johnson, United States Weather Bureau (dec.)

Collection

Weather Service