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Why snowcover is deceiving


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You have to admit, regardless what's causing it, years with minimal snowcover are becoming more common. Ottawa wintersare not as reliably cold and snowy as they once were. Snowy years like 2007-2008 and 2008-2009 are becoming the exception rather than the rule, while back in the 50s the opposite was the case. 1952-53, for example, stands out like a sore thumb in the 50s, at least up in Ontario. Note that I'm not saying this is a result of AGW - just saying it's a trend.

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You have to admit, regardless what's causing it, years with minimal snowcover are becoming more common. Ottawa wintersare not as reliably cold and snowy as they once were. Snowy years like 2007-2008 and 2008-2009 are becoming the exception rather than the rule, while back in the 50s the opposite was the case. 1952-53, for example, stands out like a sore thumb in the 50s, at least up in Ontario. Note that I'm not saying this is a result of AGW - just saying it's a trend.

Winters up there correlate broadly to the frequency of La Nina on a decadal scale, harder to find it in the interdecadal trend.

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You have to admit, regardless what's causing it, years with minimal snowcover are becoming more common. Ottawa wintersare not as reliably cold and snowy as they once were. Snowy years like 2007-2008 and 2008-2009 are becoming the exception rather than the rule, while back in the 50s the opposite was the case. 1952-53, for example, stands out like a sore thumb in the 50s, at least up in Ontario. Note that I'm not saying this is a result of AGW - just saying it's a trend.

A warm PDO translates to warmer and drier Winters across our region and much of Canada in general and this combined with the warm AMO after 95.

There was a -PDO from the mid 40's thru the mid 70's. Warm PDO from the mid 70's thru 2006. We'll see. 2009-10 was an exception because it was a Strong Nino and this combined with the extremely WB -NAO suppressed the storm track further south than usual. Last year was a more typical Nina pattern from Mid Jan onwards. Many regions south of EONT/SQUE. got above normal snowfall.

We'll see what happens thru da next few years.

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