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Cork, London, Lisbon, Nice, Rome, Valparaiso, San Francisco, and Seattle are oceanic.
Prevailing winds of the sea can't explain Rome, Nice, Valparaiso, San Francisco or Seattle's summer weather. It can only explain why temperatures are moderated
Quote:
Originally Posted by Sir Goosenseresworthie
you keep making that same contradiction. no of course Fiji is not Cfb, its way too warm! but if it was situated 30° more south (and everything else about it was the same) everyone could call it Cfb.
I think your confusing coastal moderation with a climate where winds from the cold front prevail all year.
Prevailing winds of the sea can't explain Rome, Nice, Valparaiso, San Francisco or Seattle's summer weather. It can only explain why temperatures are moderated
I think your confusing coastal moderation with a climate where winds from the cold front prevail all year.
look at it on a larger scale. hundreds, even thousands of miles upstream of the prevailing wind. in the northern hemisphere between 20°N and 50°N prevailing wind would be to the East. The entire continent of North America shapes the climate of New York City. Even though Tokyo is on an island its climate is still shaped by the entire continent of Asia.
The entire Atlantic Ocean shapes the climate of Western Europe. The entire Pacific Ocean shapes the climate of the Western United States and British Columbia (west of the mountains).
look at it on a larger scale. hundreds, even thousands of miles upstream of the prevailing wind. in the northern hemisphere between 20°N and 50°N prevailing wind would be to the East. The entire continent of North America shapes the climate of New York City. Even though Tokyo is on an island its climate is still shaped by the entire continent of Asia.
Okay. That's the Oceanic/Continental debate, which is different to the Cfa/ Cfb debate.
Plenty of Cfa climates don't get continental weather.
Maybe it's easier to say why Sydney isn't Oceanic. Koppen emphasized what he called Oceanic climates (meaning only Cfb), as being dominated by the polar low year round. That mean that cold fronts continue with only a lessening of frequency, but still remain the dominant weather system, in all seasons.
That is quite different to Med climates, where high pressure rules summer, or humid Subtropical climates, where tropical air masses have the most impact during summer.
PS- lost a Phoenix roebellini in a pot this winter. Completely fried at -5.0C. Small plants in the ground were fine at -3.5C.
Maybe it's easier to say why Sydney isn't Oceanic. Koppen emphasized what he called Oceanic climates (meaning only Cfb), as being dominated by the polar low year round. That mean that cold fronts continue with only a lessening of frequency, but still remain the dominant weather system, in all seasons.
i can't comment on that but i thought Koppen classified most areas just to the south of Sydney as Cfb?
Quote:
Originally Posted by Joe90
That is quite different to Med climates, where high pressure rules summer, or humid Subtropical climates, where tropical air masses have the most impact during summer.
there is only one difference between Csb and Cfb, precipitation. all Csb climates would be Cfb if the driest months met the oceanic minimum.
Quote:
Originally Posted by Joe90
PS- lost a Phoenix roebellini in a pot this winter. Completely fried at -5.0C. Small plants in the ground were fine at -3.5C.
that stinks
yea i think light damage can occur under 30°F/-1°C ...i saw only light damage from 27°F/-3°C but that was in a courtyard so it might have been 29°F/-2°C... in my area anything under 25°F/-4°C will cause some bad damage... i think it was around 23°F/-5°C that killed my neighbor's Pygmy years ago. those temps don't happen often though.
i wouldn't toss it just yet, i was surprised to see one sprout new fronds in mid summer even though it was completed fried from the winter before and showed no signs of life throughout the spring. do some research before doing this but i think pruning all of the dead fronds will encourage new growth...
Maybe it's easier to say why Sydney isn't Oceanic. Koppen emphasized what he called Oceanic climates (meaning only Cfb), as being dominated by the polar low year round. That mean that cold fronts continue with only a lessening of frequency, but still remain the dominant weather system, in all seasons.
That is quite different to Med climates, where high pressure rules summer, or humid Subtropical climates, where tropical air masses have the most impact during summer.
PS- lost a Phoenix roebellini in a pot this winter. Completely fried at -5.0C. Small plants in the ground were fine at -3.5C.
I thought roebellini were okay down to -6.5C? Maybe cause it was in a pot and not in the ground?
I thought roebellini were okay down to -6.5C? Maybe cause it was in a pot and not in the ground?
well the difference between pot and ground is mostly that extra foot above the ground. the temperature at the very surface of the ground is often a few degrees warmer than 1 or 2 feet above the ground where the surface of a pot's soil would be. i suppose the soil of a potted plant would drop in temperature far quicker than the ground's soil so that would work against it as well...
roebelenii are definitely NOT okay at 30°F/-1°C let alone 20°F/-6.5°C. the thing is just as it is for all tender plants in cold weather it has just as much to do with duration as it does the actual temperature.
Prevailing winds of the sea can't explain Rome, Nice, Valparaiso, San Francisco or Seattle's summer weather. It can only explain why temperatures are moderated
How doesn't it explain their summer? Any more or less so than London or Cork. Wind off the sea doesn't imply frequent rain or not frequent rain. But the prevailing winds on the US West Coast partly do explain the weather patterns.
Maybe it's easier to say why Sydney isn't Oceanic. Koppen emphasized what he called Oceanic climates (meaning only Cfb), as being dominated by the polar low year round. That mean that cold fronts continue with only a lessening of frequency, but still remain the dominant weather system, in all seasons.
Source? I've never read that emphasis by Koppen; but most of what I've read just describes temperature thresholds.
By the way, dominated polar low and getting frequent cold fronts aren't quite the same thing. You can have frequent cold front involves switches between low and high pressure systems and a low pressure system that's not particularly frontal or necessarily a cold front.
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