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| Keywords: Weather balloon radiosonde 1944.jpg Weather Bureau weather balloon being launched 1944 It consists of a latex balloon filled with helium with a 2 lb instrument package called a radiosonde suspended below it that transmits temperature air pressure and humidity data by radio telemetry to a ground station By tracking the balloon by radar as it is blown sideways by winds as it ascends the station can get a vertical profile of high altitude wind The balloon rises to a high altitude over 15 miles 72 000 feed before it pops Then the radiosonde package floats to Earth on the miniature parachute seen at center The wire hanging below the radiosonde package at bottom is its antenna By 1944 the Weather Bureau was launching weather balloons twice daily from 40 locations in the US <br /><br /> Alterations to image cropped out intruding text on page and cloned in a small amount of sky near balloon 1944-04 Retrieved June 11 2014 from http //www americanradiohistory com/Archive-Radio-News/40s/Radio-News-1944-04-R pdf Francis Wilton Reichelderfer Weather Maps for Radio Broadcast in Radio News magazine Ziff-Davis Publishing Co New York Vol 31 No 4 April 1944 p 21 Francis Wilton Reichelderfer Chief from 1938 to 1963 of the US Weather Bureau PD-USGov Uploaded with UploadWizard Weather balloons Radiosonde and dropsonde | ||||
