But what has happened in Alberta as documented by Hartman is backed up by temperature records and measurements on the ground. Are you disputing Hartman's assesment?
But the length of the growing season is perhaps the biggest difference Hartman found.
“If you look at climate limitations in Alberta, that’s probably our big one — our window between our spring frost and our fall frost,†he said.
In Lacombe, the first fall frost has been “getting later and later and later over time,†by about 18.7 days over 100 years. That trend is also consistent with the final frost of the spring, which is about 12.5 days earlier over 100 years.
“That’s a 31-day wider window between spring and fall frost over 100 years,†said Hartman. “You can’t fathom what a month’s difference would make.â€
In Fort Vermilion, the fall frosts have been getting later by 21 days, while the spring frost has ended earlier by 34 days over 80 years (not 100 years, like in Lacombe, due to a gap in the data).
“We talked about a month’s difference in Lacombe, but getting close to two months’ difference in Fort Vermilion? That’s just remarkable.â€
But the length of the growing season is perhaps the biggest difference Hartman found.
“If you look at climate limitations in Alberta, that’s probably our big one — our window between our spring frost and our fall frost,†he said.
In Lacombe, the first fall frost has been “getting later and later and later over time,†by about 18.7 days over 100 years. That trend is also consistent with the final frost of the spring, which is about 12.5 days earlier over 100 years.
“That’s a 31-day wider window between spring and fall frost over 100 years,†said Hartman. “You can’t fathom what a month’s difference would make.â€
In Fort Vermilion, the fall frosts have been getting later by 21 days, while the spring frost has ended earlier by 34 days over 80 years (not 100 years, like in Lacombe, due to a gap in the data).
“We talked about a month’s difference in Lacombe, but getting close to two months’ difference in Fort Vermilion? That’s just remarkable.â€
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