Yukon climate warming twice as fast as elsewhere, research says

A comprehensive new report on environmental changein Yukon says the territory's climate is warming faster than much of the planet, and that's not likely to change any time soon.

The Northern Climate ExChange at Yukon Collegecompiledresearch and findings from differentsources, in an attemptto offer a thorough "evidence-based"assessment of how the territory's climate is changing. The reporthas been funded by the Yukon government.

"What we thought we should try and do is pull it all together into a document that gives high-level conclusions about what's going on," said John Streicker, the report's author.

According to the report, Yukon's annual average temperature has increased by 2 C over the past 50 years, meaning Yukon has warmedtwice as fast as southern Canada or the planetas a whole. It also found Yukon's winters have seen the most change, goingup an average of 4 C over the last half-century.

The rate of change is expected to continue for at least the next 50 years, and may increase, according to the report.

The temperature increase has also coincided with moreprecipitation, especially in summer, although the report acknowledges that precipitation trends are historically more variable.

Significant andproblematic changes

Streickeradmitsa warmer Yukon may sound appealingto some people, especially if it brings milder winters and longer growing seasons for farmers. But he said there's more reason for concern.

"There are more challenges thatclimatechange will bring here in the Yukonthan there arebenefits," he said.

"The changes overall are significant and many of them are problematic."

Some of those problematicchanges arealreadyapparent in Yukon, Streicker said,pointingtomore frequent and dramatic flood events, and melting permafrost.

"Wherever you've got infrastructure like roads or buildings on top of that permafrost, that's a problem," he said.

Streicker believes the risk of wildfire is also increasing in Yukon, but the data is inconclusive. The report says fire data needs to be collected for many more years in order to be certain of any trends.

The report was reviewed by several organizations, researchers and government departments, as well as the Council of Yukon First Nations. The intention is to update it frequently, with new research and findings.