00000cam 2200000zi 4500 9.958125 CaOODSP 20251210115653 m o d f cr bn||||||||| 251210e19770124oncb o f000 0 eng d CaOODSP eng rda CaOODSP n------ nc----- En58-27/4-77E-PDF Thomas, Morley K., 1918- author. Mean monthly sea-level pressure maps for North and Central America / by M.K. Thomas. Downsview, Ontario : Meteorological Applications Branch, Central Services Directorate, Atmospheric Environment Service, January 24, 1977. 1 online resource (14 unnumbered pages) : maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier CDS ; #4-77 Digitized edition from print [produced by Environment and Climate Change Canada]. "The attached maps depict the mean sea-level pressure patterns over North and Central America expressed in kilopascals for each month of the year. These maps were prepared in 1966-67 as part of the World Meteorological Organization's Climatic Atlas Project. However, since the project has not moved as quickly as anticipated, this set of maps is being issued on an informal basis as reference material for Weather Offices. In the decade since their preparation there has not been any more up-to-date publication of pressure maps so it is believed that these maps will contain valuable and useful reference information"--Page [1]. Sea level North America Maps. Sea level Central America Maps. Atmospheric pressure North America Maps. Atmospheric pressure Central America Maps. Mer Niveau Amérique du Nord Cartes. Mer Niveau Amérique centrale Cartes. Pression atmosphérique Amérique du Nord Cartes. Pression atmosphérique Amérique centrale Cartes. Canada. Atmospheric Environment Service. Meteorological Applications Branch, issuing body. CDS ; no. 4-77. (CaOODSP)9.932874 PDF 1077 KB https://publications.gc.ca/collections/collection_2025/eccc/en58/En58-27-4-77-eng.pdf