Friday, 26 January 2018

Global Warming

Ice-Free Yukon

Unusually warm conditions in northwestern Canada have for a second winter in a row prevented a seasonal “ice bridge” from forming over the Yukon River to connect Dawson City with West Dawson.

During summer, the two sides are connected by a ferry, but in winter, residents have to wait for the water to freeze over to make the crossing. The ice bridge has historically been open to traffic by mid-December.

Crews worked for a week to create an “ice Band-Aid” by spraying a cold mist to cap a 300-foot-wide stretch of the river with ice. But the project proved impractical when daytime temperatures didn’t stay below freezing.

The typical Dawson high temperature for January is about minus 8 Fahrenheit.

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