00000cam 2200000zi 4500 9.958412 CaOODSP 20260129065638 m o d f cr bn||||||||| 251219e19760302oncabd obt f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre nl----- En57-58/832-1976E-PDF Newark, M. J., author. An example of the effect of orography on a squall line / by M.J. Newark = Exemple de l'effet de l'orographie sur une ligne de grains / par M.J. Newark. Exemple de l'effet de l'orographie sur une ligne de grains Downsview, Ontario : Environment Canada, Atmospheric Environment Service = Environnement Canada, Service de l'environnement atmosphérique, 2 March 1976. 1 online resource (43 pages, 2 unnumbered pages) : illustrations, maps, graphs. text txt rdacontent computer c rdamedia online resource cr rdacarrier Technical memoranda, 0708-2878 ; TEC 832 ISSN of series supplied from ISSN Portal. Incorrect ISSN (0068-7804) printed in this publication. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 14-15). "A mesoscale analysis of a squall line crossing the lower Great Lakes on August 25, 1975 shows that its behaviour was similar to the model proposed by Pedgley (1958). In one respect however it showed a marked difference. This was a "jump" over an area to the lee of the Niagara Escarpment and an area along the north shore of Lake Erie. The former is called the Toronto rain shadow area and received no precipitation whatsoever while in nearby locations as much as 40 mm of rain fell. In this respect the line showed a resemblance to other cases in Pennsylvania where there is a terrain feature similar to the Niagara Escarpment. Attempts are made to show that orographic effects played a large part in its behaviour, particularly with regard to the "jump". It is believed that the results of the analysis are consistent with the idea that two mechanisms transmitted the effects of terrain to the atmosphere. These are orographic lift in the case of thunderstorm formation and lee waves in the case of thunderstorm dissipation--Abstract. Includes abstracts in English and French. Squall lines Great Lakes (North America) Weather Effect of mountains on Great Lakes (North America) Lignes de grains Grands Lacs (Amérique du Nord) Temps (Météorologie) Effets des montagnes sur Grands Lacs (Amérique du Nord) Technical reports lcgft Rapports techniques rvmgf Canada. Atmospheric Environment Service, issuing body. Technical memoranda (Canada. Atmospheric Environment Service) 0708-2878 ; TEC 832. (CaOODSP)9.934501 PDF 2.08 MB https://publications.gc.ca/collections/collection_2025/eccc/en57/En57-58-832-1976-eng.pdf U.D.C: 551.577.51 672672428