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Old 10-10-2012, 08:43 PM
 
25,021 posts, read 27,933,813 times
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Quote:
Originally Posted by owenc View Post
South coast of Ireland has a frost hardness zone of 10 but it is nowhere near tropical.

I find factors like that really fascinating. The fact that you can get a hardness of almost 10.5 up at 52north. It shows how the ocean warms places way up.
Or in some cases, how the ocean can really cool thins down. On the opposite end of the scale, the treeline is the lowest in the world in Quebec thanks to the cold Labrador Current. Gotta love nature, huh?

 
Old 10-10-2012, 09:29 PM
 
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Quote:
Originally Posted by theunbrainwashed View Post
Or in some cases, how the ocean can really cool thins down. On the opposite end of the scale, the treeline is the lowest in the world in Quebec thanks to the cold Labrador Current. Gotta love nature, huh?


Your information is incorrect. Quebec does not have the lowest tree line in the world. In the Northern hemisphere alone , the tree line extends as far south as 50' latitude in the Aleutians islands. In Quebec, the furthest extent of tree line looks to be at roughly 55' latitude, (or at best 53' in Labrador- says Wikipedia).










Last edited by Kaul; 10-10-2012 at 09:38 PM..
 
Old 10-10-2012, 10:32 PM
 
25,021 posts, read 27,933,813 times
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Quote:
Originally Posted by Kaul View Post
Your information is incorrect. Quebec does not have the lowest tree line in the world. In the Northern hemisphere alone , the tree line extends as far south as 50' latitude in the Aleutians islands. In Quebec, the furthest extent of tree line looks to be at roughly 55' latitude, (or at best 53' in Labrador- says Wikipedia).








Well then, I stand corrected . I also forgot about that curious little corner of Ontario that is tundra
 
Old 10-11-2012, 07:27 AM
 
Location: Mid Atlantic USA
12,623 posts, read 13,929,460 times
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Quote:
Originally Posted by Kaul View Post
Your information is incorrect. Quebec does not have the lowest tree line in the world. In the Northern hemisphere alone , the tree line extends as far south as 50' latitude in the Aleutians islands. In Quebec, the furthest extent of tree line looks to be at roughly 55' latitude, (or at best 53' in Labrador- says Wikipedia).









Interesting maps. I'm wondering why the treeline is so much lower in Canada compared to Russia. Are the winters much colder in Canada, or the summers too cool for trees? It seems the lowest treeline latitudes are in Canada/Greenland.
 
Old 10-11-2012, 08:55 AM
 
Location: North West Northern Ireland.
20,633 posts, read 23,877,481 times
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Quote:
Originally Posted by theunbrainwashed View Post
Or in some cases, how the ocean can really cool thins down. On the opposite end of the scale, the treeline is the lowest in the world in Quebec thanks to the cold Labrador Current. Gotta love nature, huh?
The tree-line here I think is 500-700m but we don't have cold winters like them. That is more to do with our cold summers.
 
Old 10-11-2012, 08:57 AM
 
Location: North West Northern Ireland.
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Quote:
Originally Posted by tom77falcons View Post
Interesting maps. I'm wondering why the treeline is so much lower in Canada compared to Russia. Are the winters much colder in Canada, or the summers too cool for trees? It seems the lowest treeline latitudes are in Canada/Greenland.
Its probably more to do with the fact that the winter season in Eastern Canada lasts more than half the year in some places whereas in Russia the climate is similar to a peace of metal that quickly heats up when in the sun but quickly cools down in ice.
 
Old 10-11-2012, 09:35 AM
 
Location: Leeds, UK
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The summers in eastern Canada are far, far cooler than anywhere else at the same latitude. Places in Siberia actually have warm summers. Winters are also very cold for the latitude.
 
Old 10-11-2012, 09:44 AM
 
Location: North West Northern Ireland.
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Interestingly, While the winters are much colder in eastern canada their summers are not much colder.

For example Nain around the same latitude as me (further north) averages 16c in the warmest month, whereas it averages around 18c here in the warmest month.

Surprisingly happy goose valley has an average high of 20c in july!!
 
Old 10-11-2012, 06:16 PM
 
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Quote:
Originally Posted by tom77falcons View Post
Interesting maps. I'm wondering why the treeline is so much lower in Canada compared to Russia. Are the winters much colder in Canada, or the summers too cool for trees? It seems the lowest treeline latitudes are in Canada/Greenland.

The treeline is represented by the green line, not the red line. The southern tip of Greenland is at latitude 60'N , so that is not what I would call "lowest". While Eastern Canada encompasses more areas that are tundra, the tree line actually extends farthest south to the tip of Kamchatka peninsula, where trees don't grow. On the North American side, the Alaska peninsula stretches down to roughly latitude 52', albeit the Aleutian islands carries the treeline even further south. I believe the islands north of Hokkaido are also treeless, which would mark the southern extremity of the treeline.

Last edited by Kaul; 10-11-2012 at 06:47 PM..
 
Old 10-11-2012, 06:55 PM
 
914 posts, read 2,104,266 times
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here is another map of the treeline
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