00000nam 2200000zi 4500 9.939770 CaOODSP 20241127112631 m o d f cr bn||||||||| 240625s1976 oncab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-nt x7x7 En57-58/839-1976E-PDF Sheppard, B. E. (Brian E.) author. An Arctic calibration of the videograph / by Brian Sheppard = Étalonnage du vidéographe pour l'Arctique / par Brian Sheppard. Étalonnage du vidéographe pour l'Arctique Downsview, Ontario : Environment Canada, Atmospheric Environment Service, 1976. 1 online resource (13 pages, 2 unnumbered pages) : illustrations, map. text txt rdacontent computer c rdamedia online resource cr rdacarrier Technical memoranda, 0068-7804 ; TEC 839 ISSN of series should read: 0708-2878. "Published under the authority of the Assistant Deputy Minister"--Cover. "U.D.C: 551.508.92"--Cover. "31 December 1976"--Cover. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (page 7). "The Videograph visibility sensor has been calibrated against the prevailing visibility observations of meteorological observers in a variety oftemperate climate conditions by the Atmospheric Environment Service in 1970-1. Because this instrument is soon to be used at Canada's Meteorological Automated Reporting Stations in Arctic locations, we required additional calibration information for visibility restrictions experienced in colder climates. A Videograph was installed at Yellowknife Airport for the winter of 1975-6 to relate the daytime calibration in ice fog and ice crystals to that in snow. A graphical presentation of the data indicates no significant difference in the calibration for ice fog/crystals and snow"--Abstract. Includes abstracts in English and French. Visibility Northwest Territories Yellowknife Measurement Instruments Calibration. Meteorological instruments Northwest Territories Yellowknife Calibration. Visibilité Territoires du Nord-Ouest Yellowknife Mesure Instruments Étalonnage. Météorologie Instruments Territoires du Nord-Ouest Yellowknife Étalonnage. Canada. Atmospheric Environment Service, issuing body. Technical memoranda (Canada. Atmospheric Environment Service) TEC 839. (CaOODSP)9.934501 PDF 984 KB https://publications.gc.ca/collections/collection_2024/eccc/en57/En57-58-839-1976-eng.pdf