Department of Defense. Department of the Air Force. Air Materiel Command. Intelligence Department. Technical Intelligence Division.· 1947· 2 pages· 1 page mentions it
p. 2…GENTLEMEN! THE RADAR-SIGHTINGS OVER WASHINGTON WERE CAUSED BY TEMPERATURE INVERSION. THE OBJECTS WERE REFLECTIONS OF GROUND OBJECTS...CARS...TRAINS…
Central Intelligence Agency· 1952-07-05· 3 pages· 2 pages mention it
p. 1…phenomena (meteorites, clouds, aberration of light caused by thermal inversion or reflections, etc.).
b. Less than 100 reasonably credible reports…
p. 2…phenomena (meteorites, clouds, aberration of light caused by thermal inversion or reflections, etc.).
b. Less than 100 reasonably credible reports…
Center for UFO Studies· 139 pages· 10 pages mention it
p. 11…Correlation of controllers' reports with Weather Bureau records indicated that a temperature inversion almost always existed when such targets appeared…
p. 19…Temperature inversion reflections can give a return on a radar scope that is as sharp as that received from an…
Central Intelligence Agency· 1952-08-01· 2 pages· 1 page mentions it
p. 1…phenomena (noteorites, clouds, aberration of light caused by thermal inversion or reflections, etc.).
b. Less than 100 reasonably credible reports…