00000nam 2200000zi 4500 9.957908 CaOODSP 20251202155317 m o d f cr bn||||||||| 251202e19690611onc o f000 0 eng d CaOODSP eng rda CaOODSP n-cn--- En58-27/3-69E-PDF Aston, D., author. Growing degree-day normals above 42°F : based on the period 1953-1967 / by D. Aston. Toronto, Ontario : Climatology Division, Meteorological Branch, Department of Transport, June 11, 1969. 1 online resource (5 pages). text txt rdacontent computer c rdamedia online resource cr rdacarrier CDS ; #3-69 Digitized edition from print [produced by Environment and Climate Change Canada]. "In Canada growing degree-days are most commonly calculated from a base temperature of 42°F, which is near the threshold of growth for a number of common crops. One growing degree-day results for each degree that the mean temperature for the day is above 42° F. No degree days are counted when the mean temperature is below 42° F. Earlier Meteorological Branch publications giving normal growing degree-day values were based on normal values of mean temperature. Values in this report, however, are based on actual daily observations at 150 principal observing stations in the country over the 15 years of record from 1953 to 1967. For statistical purposes the February values are based on an assumed month of 28% days"--Page [1]. Atmospheric temperature Canada Tables. Degree days Canada Tables. Température atmosphérique Canada Tables. Degrés-jours Canada Tables. Canada Climate Tables. Canada Climat Tables. Tables (Data) lcgft Tables (Données) rvmgf Canada. Meteorological Branch, issuing body. CDS ; no. 3-69. (CaOODSP)9.932874 PDF 1596 KB https://publications.gc.ca/collections/collection_2025/eccc/en58/En58-27-3-69-eng.pdf