Comment 26549

By block43 (anonymous) | Posted September 12, 2008 at 15:18:11

A Smith: Do some research on La Nina and the effect it has on our part of the planet. At the beginning of 2008 a weak La Nina developed. For Hamilton La Nina's typically generate persistent cool, wet weather in the Southern Ontario Region.

El Nino years are typically hotter and drier than normal for this area.

The variation between these two cycles is predominantly due to the location of the jet stream, which is affected, in part, by ocean temperatures. Specifically, for us in Hamilton, the Pacific Ocean temperature is a leading determinate to the formation of the jet stream.

Please remember that climate data needs to be analyzed on a global scale to determine whether the global temperature of the planet is rising or cooling. The amount of precipitation and cooler temperatures in Hamilton (and the broader northeastern region of North America) this year is very typical for a La Nina year and should in no way be used to extrapolate global climate trends.

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