00000nam 2200000zi 4500 9.957017 CaOODSP 20251103131743 m o d f cr bn||||||||| 251103s1964 oncd ob f000 0 eng d CaOODSP eng rda CaOODSP En57-56/536-1964E-PDF Mahaffy, F. J., author. The accuracy of upper level wind forecasts / by F.J. Mahaffy, D.S. Ross and summer student assistants S. Glickman, R. Vachon, G. Guerin and C. Marullo. Toronto, Ontario : Department of Transport, Meteorological Branch, 1964. 1 online resource (12 pages, 6 unnumbered pages) : charts. text txt rdacontent computer c rdamedia online resource cr rdacarrier TEC ; 536 Digitized edition from print [produced by Environment and Climate Change Canada]. "27 Aug 64." "CIR 4096." Includes bibliographical references (page 7). "There are a number of previous studies on the errors in upper level winds. A paper by Major Elsaesser (1) provides a valuable summary of a number of previous studies and draws a number of conclusions as to the relative value of upper wind forecasts obtained using persistence, climatology and conventional techniques for various periods. An attempt is made in this study to verify his conclusions regarding the relative value of conventional versus persistence forecasts for 12 and 24 hours, but no comparison is made with climatological forecasts. Some of Elsaesser's paper was based on previous work discussed by Sutcliffe and Sawyer in 1953 (2)"--Abstract. Wind forecasting. Vents Prévision. Canada. Meteorological Branch, issuing body. TEC ; 536. (CaOODSP)9.934253 PDF 711 KB https://publications.gc.ca/collections/collection_2025/eccc/en57/En57-56-536-1964-eng.pdf U.D.C. 551.509.59 :551.509.322.7 :656.7