Interesting climate bioregion map comparison

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Lucas
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Interesting climate bioregion map comparison

Post by Lucas » Tue Jun 28, 2016 11:31 am


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Interesting climate bioregion map comparison
We travel the Milky way together, trees and men. - John Muir

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Erik Danielsen
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Re: Interesting climate bioregion map comparison

Post by Erik Danielsen » Tue Jun 28, 2016 12:14 pm

This is interesting as a thought-piece. I get the impression that the intent was more to subjectively map correlations between north america and eurasia than make any scientific claim of specific correspondence. I always find myself thinking about is the corresponding Chinese and Eastern USA flora, most often focused through the tuliptree. I think the mapping of Japan to the NE USA here is a stretch on that basis though, as precipitation patterns and topography give it a lot more in common ecologically with the PNW, whereas the dryer NE USA maps better to NE China. WIthin the methodology of this map, extending China up through most of what's "Japan" here and giving Japan those wet canadian islands plus a few more southern islands off of florida might have been more realistic.

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KoutaR
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Re: Interesting climate bioregion map comparison

Post by KoutaR » Fri Jul 15, 2016 11:28 am

Very interesting comparison, indeed! Lucas, where did you get the map from?

However, there is at least one major error: Northern coastal British Columbia is definitely not Germany. Germany is warmer, less oceanic and drier even if we consider the very northwesternmost corner of Germany. The yellow patch is much more a southern part of Scandinavia (actually Norway, Sweden being drier and less oceanic). Some numbers below: mean annual temperature in C, variation in mean annual temp, rainfall May-Sep in mm, annual rainfall:

Bremerhaven, NW Germany - 8.8 - 15.9 - 358 - 766
Stavanger, SW Norway ------- 7.2 - 13.8 - 575 - 1428
Hartley Bay, coastal BC ------- 7.2 - 14.4 - 699 - 2906

Hartley Bay is at the mainland coast about at the middle of the yellow patch. The potential natural lowland vegetation is very different, too: BC - coniferous forest, Germany - beech dominated deciduous forest.

In fact, Germany II does not occur anywhere. Similar temperature patterns occur in non-coastal SW BC but the rainfall patterns are different. Eastern NA and eastern Asia are more continental.

There may be other mistakes, too. Like the one Erik noticed (Japan -> NE China).

Kouta

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KoutaR
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Re: Interesting climate bioregion map comparison

Post by KoutaR » Fri Jul 15, 2016 11:58 am

Source for the climate data:
http://en.climate-data.org/

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Lucas
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Re: Interesting climate bioregion map comparison

Post by Lucas » Sat Jul 16, 2016 3:10 pm

"I think from here >> https://www.reddit.com/r/MapPorn/ but that was not my source."

I got it third hand.

I agree, it is a good thought piece with errors. The PNW should have had Chile or NZ but most geo challenged viewers can't relate to that so Germany was stuffed in.
We travel the Milky way together, trees and men. - John Muir

Joe

Re: Interesting climate bioregion map comparison

Post by Joe » Sat Jul 16, 2016 3:17 pm

That web site is MapPorn? Heck, I thought I'd see some naked bodies lying on beds with blankets that look like maps.
Joe

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KoutaR
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Re: Interesting climate bioregion map comparison

Post by KoutaR » Sat Jul 16, 2016 3:31 pm

Indonesia = Haiti & Dominican Republic is likely an error, too. At least partly, as a large part of Indonesia is ever-wet and Caribic more seasonal. Perhaps Java would be better.

The placement of France, Spain and Portugal is questionable, too.

I may make an improved version sometimes when I have time. I already know, how I would do it.

Joe

Re: Interesting climate bioregion map comparison

Post by Joe » Sat Jul 16, 2016 4:12 pm

Kouta, regarding the US Northeast- I'm not sure Japan is the best comparison- as I think Japan has a milder climate- perhaps Scandinavia would be better? Or maybe Manchuria? And in that case, the mapping of China on the east coast could just extend up into the Northeast.
Joe

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KoutaR
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Re: Interesting climate bioregion map comparison

Post by KoutaR » Sat Jul 16, 2016 4:48 pm

Joe,

I agree. Just like Erik proposed in message #2. Scandinavia is more oceanic than the places with similar mean annual temperatures in eastern NA. Scandinavia must be in the west. I once searched for NA equivalents for Finland. South-central Finland (like Jyväskylä or Viitasaari) is in central BC, about where a place name has been written in the map, I cannot see what it is. Mean annual temp - mean monthly temp amplitude - rainfall May-Sep:

Viitasaari, Finland - 2.5 - 25.5 - 309
McLeod Lake, BC -- 2.5 - 26.2 - 286

That the NA equivalent for Finland is about there has also been confirmed by Finnish botanists, e.g. Leena Hämet-Ahti.

But where is northern Finland, I did not find it. I guess it does not exist anywhere in NA. Without having done any research, I think Norway is where the map says Germany & Scandinavia. Where is Sweden - maybe a bit to the west from Finland.

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