CGRG Bibliography of Canadian Geomorphology
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Author : Budikova, D.
Date : 2002.
Title : Wintertime interannual variation of surface air temperature across western Canada.
Publication : 98th AAG Annual Meeting, Association of American Geographers. March 19 - March 23, 2002. Los Angeles, California.
Issue :
Page(s) :
Abstract
The "typical" ENSO-related signals in surface air temperature records across Western Canada have been examined through several composite studies. Greatest signatures of ENSO are observed during northern hemispheric winters, defined by the DJF(+1) period. Positive (negative) signals are most prominent across the study area during El Niņo (La Niņa) periods. Such observations have largely been attributed to the presence of a mid-tropospheric high-pressure cell, part of the PNA (RPNA) pattern, positioned over the area during these time periods. In depth analyses of such composited responses, however, have shown this signature variability from one event to the next to be very high. This paper examines this year-to-year variation in more detail for the winter season across Western Canada between 1950 an 1996. Winter station signal statistics are examined during three time periods, namely El Niņo, La Niņa and non-ENSO seasons. Such examinations help assess relative signal predictability from one time period to another and may contribute towards improved prediction skills of current forecasting tools.
Bibliography of Canadian Geomorphology