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For all the talk about cold in Canada… the long-term linear temperature just released show mean temp trends across Canada have been upward during the last 60-years-plus time period. There seems to be little question now that Canada as a whole is growing warmer:
AccuWeather.com - Brett Anderson | Temperature Trends across Canada since 1948 (http://www.accuweather.com/blogs/anderson/story/48636/temperature-trends-across-canada-since-1948.asp - broken link)
I suspect a similar trend is true for the Northeast US. Assuming this is going to keep continuing, this should mean the years ahead are more likely to be warmer with shorter winters.
Back in the late 50's through mid 70's when most of the planet went through a brief period of sharly dropping temperatures, a small cadre of scientists were insisting that rising CO2 levels would warm us up to unprecedented levels. The primative global climatic models (GCM's) of the era postulated the higher latitudes in both hemispheres would feel the effects first and the warming signal would be strongest. They also suggessted winter temperatures and night time temperatures would climb faster.
"Cool" countries, such as Canada (New Zealand) would warm up faster than "warm" ones such as Cuba (Paraguay). Interestingly enough this asymmetric warming would take place regardless of whether natural processes or mankind's activities were responsible.
The graphs show the Arctic tundra, Arctic mountains and fiords and the MacKenzie district warmed up faster than the rest of Canada. They also show a strong winter warming signal although all seasons warmed up to some extent or other.
Are we seeing the same trends in Russia and northern Europe; the same pattern in New Zealand, southern Argentina and Chile and Antarctica? Don't know but I would be surprised if we didn't.
Back in the late 50's through mid 70's when most of the planet went through a brief period of sharly dropping temperatures, a small cadre of scientists were insisting that rising CO2 levels would warm us up to unprecedented levels. The primative global climatic models (GCM's) of the era postulated the higher latitudes in both hemispheres would feel the effects first and the warming signal would be strongest. They also suggessted winter temperatures and night time temperatures would climb faster.
"Cool" countries, such as Canada (New Zealand) would warm up faster than "warm" ones such as Cuba (Paraguay). Interestingly enough this asymmetric warming would take place regardless of whether natural processes or mankind's activities were responsible.
The graphs show the Arctic tundra, Arctic mountains and fiords and the MacKenzie district warmed up faster than the rest of Canada. They also show a strong winter warming signal although all seasons warmed up to some extent or other.
Are we seeing the same trends in Russia and northern Europe; the same pattern in New Zealand, southern Argentina and Chile and Antarctica? Don't know but I would be surprised if we didn't.
Well the global warming debate is really sticky as you must well know. Politics has now even gotten in the way of the scientists community making general statements.
However, from what I understand, your right, the signal for warming was projected to come from higher latitudes first. As you say, cool" countries, such as Canada (New Zealand) should warm faster, and the subtropics/tropics should warm slower…and that may be the problem: More 100 F days in Montreal, Canada or Christchurch, NZ would be more noticeable, yet, even a weak signal of the mean date when the first 80 F days each year in Miami or Townsville might not have drawn any research attention, yet there might be something there.
The graphs show the Arctic tundra, Arctic mountains and fiords and the MacKenzie district warmed up faster than the rest of Canada is really troubling to me. When the white surfaces with a high albedo are replaced with dark sea water/or land (lower albedo) more sunlight is absorbed at the surface. So the feedback changes themselves become the issue, rather that the larger scale climate change. Maybe we are seeing the first evidence of that?
Location: The western periphery of Terra Australis
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Still too cold for me! Most parts of the world are warming, in 50 years time London will have the climate of Rome, and New York the climate of Richmond, Virginia.
It seems to me, at least for the past decade, that spring (March, April, May) has been, in general, getting colder, while autumn (September, October, November) has been getting warmer, at least for my area (Southern Ontario). Anybody else noticed this? I really don't mind warm autumn, but cold spring is just too hard to stomach sometimes...
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Then I can sell and retire.
