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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.
Their summers are dominated by high pressure, so prevailing wind is in response to that high pressure. That's quite different to a true Cfb climate like mine, where westerly airflow shapes the climate year round.
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Originally Posted by nei
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.
It's strongly emphasized in the Wiki entries on Cfb climates, which I'm assuming is correct.. It's certainly the case with NZ, where systems with their origins below 60"S are a feature year round.
Their summers are dominated by high pressure, so prevailing wind is in response to that high pressure. That's quite different to a true Cfb climate like mine, where westerly airflow shapes the climate year round.
The airflow off the west coast is still westerly [well, northwesterly] in the summer; it's still shaping the climate. The response is of course different. The wind still explains the climate.
It's strongly emphasized in the Wiki entries on Cfb climates, which I'm assuming is correct.. It's certainly the case with NZ, where systems with their origins below 60"S are a feature year round.
All I found on the main wiki page on Cfb climate is a vague "adequate and reliable precipitation" year-around.
I agree the lack of tropical influence and/or permanent high pressure influence is a general characteristic; I'm not sure if it's a defining characteristic.
i can't comment on that but i thought Koppen classified most areas just to the south of Sydney as Cfb?
That's only because Koppen puts so much emphasis on the 22C threshold, and pays little emphasis to the weather patterns. Climates almost all the way to the NSW southern border are on or very close to the 22C mark, but their weather patterns are firmly in the Cfa camp Winter is the driest season, which is in direct contrast to almost all Cfb climates.
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there is only one difference between Csb and Cfb, precipitation. all Csb climates would be Cfb if the driest months met the oceanic minimum.
Can't disagree with that in general, although there are plenty of folks, who don't think Csb is Mediterranean. Csb climates are still quite different to Cfb climates that I know though. Somewhere like Seattle has a grey season during the cooler months and a summer sunshine peak -very different to my climate, where there is no grey season, and the cloudiest month is actually in summer.
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...[/quote]
This one was totally fried, with the spears pulling out. The temperature was below freezing for about 18 hours straight, peaking at -5c. I was encouraged by the in ground ones, that show no sign of damage. Also had a cycad badly fried, although no other palms showed any signs of damage.
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Originally Posted by tom77falcons
I thought roebellini were okay down to -6.5C? Maybe cause it was in a pot and not in the ground?
Roebellini are very tender, and the only ones I see around here, are up against buildings or under heavy bush cover.
I usually think of somewhere in coastal NW spain as the typical oceanic climate. Brisbane seems typical subtropical though. Atlanta doesn't really look like I imagine subtropical climates to look.
Imo, Long Island looks a little less green and without cold hardy palm trees. So, maybe more temperate than Long Island. But compare Atlanta to places like Beaufort SC at sea level and near the coast and it doesn't look nearly as green or alive in winter.
A more subtropical climate looks more green in winter.
Jan 2015 in Beaufort, SC. Looks more green than Atlanta.
The airflow off the west coast is still westerly [well, northwesterly] in the summer; it's still shaping the climate. The response is of course different. The wind still explains the climate.
Without the summer high pressure, Seattle and Portland would have very different summers. I don't think that high pressure is a result of prevailing wind
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All I found on the main wiki page on Cfb climate is a vague "adequate and reliable precipitation" year-around.
I agree the lack of tropical influence and/or permanent high pressure influence is a general characteristic; I'm not sure if it's a defining characteristic.
Without the summer high pressure, Seattle and Portland would have very different summers. I don't think that high pressure is a result of prevailing wind
That's not contradicting my point. The prevailing wind still determines Seattle and Portland's weather. Prevailing wind is always caused by the configuration of high and low pressure system.
you can see big differences just by comparing various suburbs of Sydney. go a few miles inland: hotter days, cooler nights, and less rain. go even further inland in the far western suburbs and i would hesitate calling it "humid"... borders semi-arid classification...
In the summer, the inland areas get more afternoon thunderstorms and heavier rain than Sydney CBD would. The CBD/coast is somehow drier in the summer, but much more wetter in the winter. The western suburbs have wetter summers and far drier winters, unlike the CBD.
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Originally Posted by Joe90
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..
Funny you say that, because Sydney gets cool afternoon breezes after a hot dry day. This famous breeze is known as a "southerly buster". Is that considered to be a polar wind (or polar low)?
And this phenomena happens very often in the warm months.
Last edited by Ethereal; 09-29-2015 at 03:21 AM..
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