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well, a 20 degree shift south would put Oregon as the same latitude as parts of Baja California so the humid green "rainforests" of the PNW would likely be replaced by subtropical chaparral, desert scrub and grassland at sea level and some pine and oak woodland at the highest elevations on the western slopes of the coast and cascade mountains and the Willamette valley would likely look more like phoenix, Arizona??? OTOH, coastal California would likely have a climate like Mazatlan and Acapulco with a tropical wet and dry climate with hot wet summers and cooler drier winters while the higher elevations of the sierras and coast ranges would have "cloud forests" of oak, pine, and fir at the higher elevations with tropical rainforests at the lower elevations. perhaps reno would have a tropical highlands with a climate like Guadalajara or Mexico city??!!!!
FWIW, some of the native vegetation of mexico at those latitudes already does surprisingly well here at sea-level 43 north with numerous Mexican species of evergreen oaks, pines, cypresses (cupressus), butterfly bushes (buddleja), nolina (a trunked yucca-like plant), and even some agaves----maybe ther are anticipating a real change, LOL.
Last edited by georgeinbandonoregon; 04-20-2015 at 10:20 PM..
Boston and Chicago will be at northern edge of tropical climate.
Boston being similar to between Havana and Miami and Chicago with larger diurnal range year round coldest month 75/55 and hottest month 93/77.
British Columbia spotted light as the new SoCal. Juneau, AK would have prolonged wet season until early in the summer and very quick dry season for a couple of weeks but everything else would be just like San Francisco especially those islands in the vicinity.
Eventually, population in North America goes highly concentrated along the Hudson Bay (Rankin Inlet, Nunavut is the biggest metro area).
Are you saying the upper Hudson Bay would be the new Great Lakes? Because Rankin Inlet probably would end up like Milwaukee. The Bay does have a large latitude range though, likely ranging from subtropical to places more continental than the modern Great Lakes.
now the question is anyone have any idea how we will push the Americas 20 degrees south?
All the North Americans go to North Canada and push south, while the South Americans go to Southern Argentina and pull it towards Antarctica. Then we give penguin chainsaws to cut away the obstructing areas of Antarctica
Are you saying the upper Hudson Bay would be the new Great Lakes? Because Rankin Inlet probably would end up like Milwaukee. The Bay does have a large latitude range though, likely ranging from subtropical to places more continental than the modern Great Lakes.
I want to call it's Mediterranean Sea in the Western Hemisphere in terms of the great scale of distinct culture/economic zone. Rankin Inlet surely moderated their winters by not having giant landmass far away north of 60°N. If, also depends on how your scenario goes to which ocean current is dominantly effected to flow into the Hudson Bay plays a key role.
Here's a visual map, horribly retouched at 30°W line though you may try with MS Paint draw some geographic factors to provide a more detailed scenario.
Historically, industrialization and its attendant economic expansion tended to predominate in the middle Northern latitudes. So if this shift had happened a few hundred years ago, the economic colossus of North America would be Anchorage. New York, meanwhile, would be a major vacation destination (thanks to all the water-sports opportunities) most of the year, except during January when it got a little chilly.
Historically, industrialization and its attendant economic expansion tended to predominate in the middle Northern latitudes. So if this shift had happened a few hundred years ago, the economic colossus of North America would be Anchorage. New York, meanwhile, would be a major vacation destination (thanks to all the water-sports opportunities) most of the year, except during January when it got a little chilly.
hm south america may have a extremely cold winter,even more than north america..
I don't know. Land based air masses and maritime air masses are two different things. One reason subtropical climates in North America have more extremes than South American subtropical climates is because of the role of land influence vs sea influence. South America is a smaller continent in terms of land, and North America is quite huge compared to South America. North America is also top heavy. Far more land in the northern part of the continent than further south. South America is the other way around. The largest part of the continent is towards the warmer part.
Even if a shift 20 degrees south were to occur, South America would still have relatively more influence from the Atlantic Ocean than Antarctica. North America's large landmass in the northern section is one reason for cold air masses being able to make their way as far south as Florida.
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