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Fifty degrees north, and meets all of Koppen's criteria for a Csb climate:
Coldest month averaging warmer than -3C.
Driest month less than 30mm of precipitation.
Driest month less than less than one-third wettest winter months precipitation.
It's just shy of Dsb by about 0.6C in the coldest month, and just shy of Csa in the hottest two months, again by 0.6C. Though little rain falls, it's too cool and wet to qualify as semi-arid given the winter max.
Unlike many stations elsewhere in the interior, it shows a strong winter max stations even as nearby as Spences Bridge and Lytton don't recieve. My best guess is that come coastal weather is funneled up the Fraser canyon. ( I'd love reliable climate data for Boston Bar or any one of the little towns north of Hope, south of Lytton, as it seems like it would have a very intriguing transitional climate. )
Stuie is certainly very far north for a Csb climate in North America, and is one of those isolated pockets that crop up from time to time. It isn't very Mediterranean, but it's borderline so that's no surprise. It still seems to bear similarities to Pacific Northwest characteristics, though.
On one world climate map I saw a small pocket of Csb in the Alaska Panhandle, but in my extensive search I've found no records of such a place. I've found several Dsc climates, but no Csb. It may not even exist but with the summer drying trend of some parts of the Panhandle and the milder winters there's a small chance of a Csb (maybe even a Csc) being somewhere in there.
Fifty degrees north, and meets all of Koppen's criteria for a Csb climate:
Coldest month averaging warmer than -3C.
Driest month less than 30mm of precipitation.
Driest month less than less than one-third wettest winter months precipitation.
It's just shy of Dsb by about 0.6C in the coldest month, and just shy of Csa in the hottest two months, again by 0.6C. Though little rain falls, it's too cool and wet to qualify as semi-arid given the winter max.
Unlike many stations elsewhere in the interior, it shows a strong winter max stations even as nearby as Spences Bridge and Lytton don't recieve. My best guess is that come coastal weather is funneled up the Fraser canyon. ( I'd love reliable climate data for Boston Bar or any one of the little towns north of Hope, south of Lytton, as it seems like it would have a very intriguing transitional climate. )
I think this gets back to the issue of the fact that Koppen’s original “C” climates were called “Mild Temperate Rainy” and not subtropical (Mediterranean is within the subtropical climate group). In the case of the Trewartha system – Lytton doesn’t have 8 months with a mean temp of 10 C/50 F...so it would not be subtropical Mediterranean either.
So in both systems it seems that Lytton is a temperate climate...still very warm for being in Canada.
Last edited by wavehunter007; 08-02-2012 at 06:03 AM..
Koeppen preferred to use -3C, and the northernmost Csb under that system is what we're discussing here.
Yeah and Boston is subtropical, so is (almost) Toronto, which is logical given that they have sooooo warm winters FYI many climatologists use the 0°C threshold as it makes much more sense from a vegetation point of view; I wasn't trying to hijack the OP's thread but merely expressing my opinion (are we still allowed to do that here?) about what I consider an absurd feature of this way of classifying climates, the OP's climate being a perfect example: in that case if you use the -3C threshold Lytton becomes a cool summer Mediterranean climate with record lows approaching -30C and 156cm snow each year.
Ask yourself this question, does it have more in common with Porto or Innsbruck?
Yeah and Boston is subtropical, so is (almost) Toronto, which is logical given that they have sooooo warm winters FYI many climatologists use the 0°C threshold as it makes much more sense from a vegetation point of view; I wasn't trying to hijack the OP's thread but merely expressing my opinion (are we still allowed to do that here?) about what I consider an absurd feature of this way of classifying climates
I am aware that many climatologists use 0C as the threshold, but Koeppen did not, and since we're discussing his system of classification here, the -3C threshold is where it's at. If you want to find the northernmost subtropical climate using the criteria you or anyone else adheres to, I have no objection, but this isn't the thread for that. I don't want to turn this into a debate over where the subtropics/Mediterranean ends and where continental begins. We already have threads for that.
I think we can all respect that under the Koeppen system these are Csb climates, and try to find the northernmost one that qualifies, regardless of what one thinks of the merits of that particular system. I do just that when it comes to the Trewartha system or any other classification scheme, so I see no reason why that courtesy can't be reciprocated.
Quote:
Ask yourself this question, does it have more in common with Porto or Innsbruck?
It's borderline, the implications of that being obvious. I could ask the same sort of question: does its winters have more in common with New York City or Winnipeg? The answers to any of these sort of questions don't prove much in and of themselves.
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FYI many climatologists use the 0°C threshold as it makes much more sense from a vegetation point of view; I wasn't trying to hijack the OP's thread but merely expressing my opinion (are we still allowed to do that here?) about what I consider an absurd feature of this way of classifying climates, the OP's climate being a perfect example: in that case if you use the -3C threshold Lytton becomes a cool summer Mediterranean climate 
