PRELIMINARY RESULTS OF PROJECT CLOUD TRAIL Open PDF Document Details Document Type Technical Report Publication Date Feb 01, 1956 Accession Number AD0101313 Tags Communities of Interest Air Platforms DTIC Thesaurus Topics Air Flow Air Force Aircrafts Altitude Cirrus Clouds Clear Air Turbulence Condensation Trails Jet Aircraft Jet Streams Lapse Rate Measurement Temperature Inversion Test And Evaluation Turbulence United States United States Government Warning Systems