00000nam##2200000za#4500 9.697533 CaOODSP 20210624235525 cr ||||||||||| 150407|2010||||xxc|||||o f|0| 0 eng|d CaOODSP eng n-cn--- En56-192/2010E-PDF Canada. Environment Canada. Canadian Ice Service. Lake ice climatic atlas. Great Lakes, 1981-2010 [electronic resource] Downsview - Ontario : Environment Canada. [2010]. 157p. "This Ice Atlas follows from other Canadian Ice Atlases published in 1980, 1990 and in 2000. The ice years 1980-81 through 2009-10 have been used for this publication and cover a climatological time period of 30 years, the standard for representing statistical averages and extremes. ... In addition to what was contained in the previous atlas, we have added the 30 year Median of Ice Concentration When Ice Is Present."--Page 2 of 157, Introduction. 13-10-Supp 2013-04-13 Climate change gcpds Atlas climatique des glaces de lac. Grands Lacs, 1981-2010 (CaOODSP)9.641649 http://publications.gc.ca PDF 9725 KB https://publications.gc.ca/collections/collection_2013/ec/En56-192-2010-eng.pdf