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Well, there are few areas of southern Europe who can be classed both subtropical and mediterranean Csa climates. However, these areas experience weak subtropical influences, compared to true subtropical climates.
Thus, almost mediterranean coast of Europe are not mediterranean sutropical, but mediterranean temperate.
Once you move inland, sutropical features dissapear entirely, even in such places like Malaga or Sicily.
The rainiest and cloudiest season there is late autumn or winter, which contribute to these climates to appear more temperate, instead of sunny winters of true subtropical climates like Florida.
I agree, NYC should not be subtropical. More like temperate.
A good guideline is that if your climate has 7 to 11 months with a high above 20 C, you live in a subtropical zone. Basically from Central FL to just south of DC.
What about places like Durban (Kwazulu-Natal) or Brisbane (Western Australia) where the average highs exceed 20 C for 12 months of the year?
Ideally, subtropical itself should be divided into 2 zones. Cool winter subtropical and warm winter subtropical. The former would include Any locality with winter high temperatures between 41 F-55 F. Cities in this region include Baltimore, DC, Louisville, St Louis, Nashville, Raleigh, Atlanta, Memphis, OKC, and Richmond. The latter would include Any location with winter temperatures between 55-69 F. Cities in this list include Jacksonville, Houston, Dallas, New Orleans, Orlando, Columbia, Birmingham, Austin, Savannah, and San Antonio. Anything north is Continental, and south is tropical.
"Cool winter" and "Subtropical" don't go well together.
They should have a new zone, Semi-continental. That includes most of your "cool winter" cities above.
Because people such as Koppen gave certain places a sub-tropical classification, when they are anything but. So we have the problem that many areas are considered "sub-tropical" purely from going by his hugely flawed system, when they do not fit the typical view most would have as sub-tropical... For example, to me somewhere that has hot summers & cold winters is not sub-tropical, but continental, yet Koppen considers many climates like this as sub-tropical, when most consider sub-tropical climates to be warm year round...
This is exactly the reason. I think both Koppen and Trewartha include too many climates that shouldn't "make the grade". I think the boundaries for subtropical should be much stricter and include only very mild winters and scorching summers (with means over 25°C in all months for ex.).
"Cool winter" and "Subtropical" don't go well together.
They should have a new zone, Semi-continental. That includes most of your "cool winter" cities above.
That name works well. The bottom line is that Subtropical is too widely defined. Koppen needs to consider Humid semi continental as zone Cfb, and Humid Subtropical as Cfa and Cwa. Write up an email to the NOAA and try to drill this idea into their heads.
That name works well. The bottom line is that Subtropical is too widely defined. Koppen needs to consider Humid semi continental as zone Cfb, and Humid Subtropical as Cfa and Cwa. Write up an email to the NOAA and try to drill this idea into their heads.
Why NOAA? They don't seem to mention climate classification at all on their weather sites.
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The origin of the problem lie in the fact that some people, when they see 'subtropical' think it is a specufic kind of tropical climate, while subtropical are just the warmer types of temperate climates.
Anyway, climate classifications are always somehow arbitrary, in reality climate form a continuum in which it is difficult to draw objective strict dividing lines.
That name works well. The bottom line is that Subtropical is too widely defined. Koppen needs to consider Humid semi continental as zone Cfb, and Humid Subtropical as Cfa and Cwa. Write up an email to the NOAA and try to drill this idea into their heads.
I think there should be another letter for semi continental. Let's just say T. So draw the line from C and E as a mean of 6C/43F in the coldest month. Places with a hottest month mean of less than 22C (72F) are not eligible. So Shanghai, Milan, OKC, and the east coast of North America down to North Carolina would be Tf. Medford Oregon and Yreka, California would be Ts, and Tokyo, Japan would be Tw.
Over 25 C in all months would be in almost all cases, tropical, unless nights were unusually chilly for the daytime highs.
On the milder side, would you consider somewhere like Seogwipo in Korea to be subtropical?
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