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Post by Ariete on Apr 11, 2018 13:29:18 GMT -5
Personally , i Think Washington D.C is the northest major city with a true humid subtropical climate.
The végétations in Washington DC are a humid subtropical vegetations.
The subtropical vegetations limit is in a few miles north of Washington DC.
DC has a humid subtropical vegetations , the limit is in a few miles north of DC and Trewartha classification is not good because in this classification DC and London have the same climate !!!
I prefer koppen classification.
The subtropical vegetations are not necessarily the palms! And Santa Monica has palm trees and the climate is not subtropical but dry oceanic climate.
And DC winter are not very cold (average in january is 6.4 degree C and 8.4 in February ) and washington DC summer are very long , tropical and very hot with warm rain.
The DC Area vegetations are subtropical three (not palm ) forest.
Atlanta , Raleigh ... has not Palm three too.
There is not need to debat , Santa Monica are not subtropical because the summer are very very cool !
Then obviously, the current forest around Washington does not look like any more too much a subtropical vegetation , but this forest is mixed with humid subtropical forest and temperate forest ; It is important to understand that ! And obviously, if you compare the current forests of Washington with those of Louisiana, you cannot accept the link between these two area.
What it is necessary to understand, it is that, if in Washington DC the subtropical forest could grow naturally, but not in New York City area for example. That's it which makes that bioclimatically speaking, NYC and D.C is not in the same climate and vegetations area !
Besides, you should not forget that within the same climatic region (here, in this particular case, the region which I call " continental subtropical "), there is often a big climatic variability. Moreover, between Washington and New Orleans for example, which constitute in a way two extremes of this climatic region, the climatic differences in terms of temperatures and precipitation are not so big as they seems:
DC: +1.5°c / 26.5°c
NO. 12°c / 28.5°c
And a very similar regime of precipitation.
And it is important to include the face of the climate of Washington is, very close to the New Orleans climate. It is important to understand that!
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Post by Babu on Apr 11, 2018 13:33:21 GMT -5
Yes.
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Post by Lommaren on Apr 11, 2018 13:33:27 GMT -5
DC and Baltimore = yes
Philly = no
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Post by Ariete on Apr 11, 2018 13:40:46 GMT -5
Washington DC is very hot in the summmer with very oppresive heat wave.
Otherwise, in the case of the continental, I calculated indices of continentality for two cities:
Washington: 0,565
New Orleans: 0,515
So casually, continentality is very present in New Orleans. I would choose continental subtropical, and I would add "hot".
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Once again, a hot summer alone does not make a climate sub-tropical...
Your Post is not relevant !
I calculated the subtropical indices of Washington DC and it is 12339 , this is above the threshold (11000) therefore Washington DC have a subtropical climate.
San Diego, only reach 7531 , San Diego didn't not at all a subtropical climate.
New York : 8062 not subtropical
Algiers (Algeria) : 8747 not subtropical
Sydney (Australia) : 13704 subtropical
Roma and Sevilla are two méditerranéenne climate , but very clearly different climate as whell Washington D.C and Orlando!
Subtropical indice :
Calculate Precipitations(T°min + 2T°max - 25) for each months, and add these 12 values
Do this :
1) Calculate the T°min + 2T°max - 25
2) If Precipitations > T°n+T°x , take Precipitations = T°min+T°max
3) If T°min + 2T°max - 25 < 0 (this may be the case in winter), take Precipitations = 40mm if Precipitations > 40mm.
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Post by Steelernation on Apr 11, 2018 14:33:02 GMT -5
Yes.
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Post by rozenn on Apr 11, 2018 14:52:30 GMT -5
Yes Roma and Séville have too low subtropical indices than Washington to allow for subtropical classification.
Another important indice to consider is the De Martonne aridity indice. Here is the De Martonne indices of Washington and other cities :
Almeria : 6,8 arid
Tunis : 15,3 semi-arid
Saint-Julien-Molin-Molette : 28,9 semi-humid
Washington : 32,3 humid
New York : 33,2 humid
So it makes clear that Washington has a subtropical climate ! It rains comes from thunderstorms with handsome warm rain and not cold rain like mediterranean climates, who are not subtropical climates . Subtropical climate need tropical features in summer and mediterranean climates is far from having tropical features in summer. Cities like Seville don't have tropical summer, Seville summer are very close than an arid climate in term of precipitations and humidity unless DC that has subtropical climate. As Ariete said, the climate of Washington D.C allows some subtropical plants to grow as Washington D.C is located in the north transition of humid continental and humid subtropical climates .- The forest around Washington DC is the same forest than Atlanta or Tallahassee thanks to a high dew point in summer with tropical conditions.
The very important indice to consider is too the Gaussen xérothermique indice :
Tunis : 112,2
Washington : 35,9
Subtropical can only below 50.
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Post by Ariete on Apr 11, 2018 15:18:45 GMT -5
"handsome warm rain" always cracks me up  |
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Post by rozenn on Apr 11, 2018 15:37:58 GMT -5
Not sure where it comes from. It was coined by Adrianna IIRC? It doesn't correspond to anything in French.
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Post by Ariete on Apr 11, 2018 16:01:11 GMT -5
Not sure where it comes from. It was coined by Adrianna IIRC? It doesn't correspond to anything in French. I thought it was from 'beau'. IDK. |
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Post by rozenn on Apr 11, 2018 17:11:15 GMT -5
IDK, no sane person says "belle pluie" in French.
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Posts: 0
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Post by Deleted on Apr 11, 2018 18:24:25 GMT -5
Not sure where it comes from. It was coined by Adrianna IIRC? It doesn't correspond to anything in French. Some guy called Hartfordd? Remembering some time back. |
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Post by knot on Apr 11, 2018 19:54:12 GMT -5
Aye, Washington D.C. is certainly subtropical. I haven't a clue if it's because I didn't calculate it properly (I stood by T°min + 2T°max –25 for each month & added all 12 values by each other), but Oberon's subtropical indice is only 2004.40  |
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Post by P London on Apr 12, 2018 7:42:46 GMT -5
Just lol
Hartfordd was obsessed with this topic. Utter nonsensical jibberish...
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Post by tominphilly on Apr 16, 2018 15:12:47 GMT -5
Personally , i Think Washington D.C is the northest major city with a true humid subtropical climate. The végétations in Washington DC are a humid subtropical vegetations. The subtropical vegetations limit is in a few miles north of Washington DC. DC has a humid subtropical vegetations , the limit is in a few miles north of DC and Trewartha classification is not good because in this classification DC and London have the same climate !!! I prefer koppen classification. The subtropical vegetations are not necessarily the palms! And Santa Monica has palm trees and the climate is not subtropical but dry oceanic climate. And DC winter are not very cold (average in january is 6.4 degree C and 8.4 in February ) and washington DC summer are very long , tropical and very hot with warm rain. The DC Area vegetations are subtropical three (not palm ) forest. Atlanta , Raleigh ... has not Palm three too. There is not need to debat , Santa Monica are not subtropical because the summer are very very cool ! Then obviously, the current forest around Washington does not look like any more too much a subtropical vegetation , but this forest is mixed with humid subtropical forest and temperate forest ; It is important to understand that ! And obviously, if you compare the current forests of Washington with those of Louisiana, you cannot accept the link between these two area. What it is necessary to understand, it is that, if in Washington DC the subtropical forest could grow naturally, but not in New York City area for example. That's it which makes that bioclimatically speaking, NYC and D.C is not in the same climate and vegetations area ! Besides, you should not forget that within the same climatic region (here, in this particular case, the region which I call " continental subtropical "), there is often a big climatic variability. Moreover, between Washington and New Orleans for example, which constitute in a way two extremes of this climatic region, the climatic differences in terms of temperatures and precipitation are not so big as they seems: DC: +1.5°c / 26.5°c NO. 12°c / 28.5°c And a very similar regime of precipitation. And it is important to include the face of the climate of Washington is, very close to the New Orleans climate. It is important to understand that! Where you get this idea their forests are subtropical around DC? No different than here. It is a cold winter, hot summer continental climate just like Philly. |
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Post by Ariete on Apr 16, 2018 15:19:24 GMT -5
Where you get this idea their forests are subtropical around DC? No different than here. It is a cold winter, hot summer continental climate just like Philly. Beecause of handsome hot rain and beautiful thunderstorm and nice Noel atmosphere ! |
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Post by irlinit on Apr 16, 2018 17:16:25 GMT -5
I miss the subtropical discussions
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Post by alex992 on Apr 16, 2018 17:29:09 GMT -5
Personally , i Think Washington D.C is the northest major city with a true humid subtropical climate. The végétations in Washington DC are a humid subtropical vegetations. The subtropical vegetations limit is in a few miles north of Washington DC. DC has a humid subtropical vegetations , the limit is in a few miles north of DC and Trewartha classification is not good because in this classification DC and London have the same climate !!! I prefer koppen classification. The subtropical vegetations are not necessarily the palms! And Santa Monica has palm trees and the climate is not subtropical but dry oceanic climate. And DC winter are not very cold (average in january is 6.4 degree C and 8.4 in February ) and washington DC summer are very long , tropical and very hot with warm rain. The DC Area vegetations are subtropical three (not palm ) forest. Atlanta , Raleigh ... has not Palm three too. There is not need to debat , Santa Monica are not subtropical because the summer are very very cool ! Then obviously, the current forest around Washington does not look like any more too much a subtropical vegetation , but this forest is mixed with humid subtropical forest and temperate forest ; It is important to understand that ! And obviously, if you compare the current forests of Washington with those of Louisiana, you cannot accept the link between these two area. What it is necessary to understand, it is that, if in Washington DC the subtropical forest could grow naturally, but not in New York City area for example. That's it which makes that bioclimatically speaking, NYC and D.C is not in the same climate and vegetations area ! Besides, you should not forget that within the same climatic region (here, in this particular case, the region which I call " continental subtropical "), there is often a big climatic variability. Moreover, between Washington and New Orleans for example, which constitute in a way two extremes of this climatic region, the climatic differences in terms of temperatures and precipitation are not so big as they seems: DC: +1.5°c / 26.5°c NO. 12°c / 28.5°c And a very similar regime of precipitation. And it is important to include the face of the climate of Washington is, very close to the New Orleans climate. It is important to understand that! Where you get this idea their forests are subtropical around DC? No different than here. It is a cold winter, hot summer continental climate just like Philly. You took this post a little too seriously, lol |
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Post by Ariete on Jul 13, 2018 12:08:50 GMT -5
Are you uncultivated ! DC artic OMG If you want consider DC as artic has cause of the winters, you want that have sets summer of DC who are hotter and longer on average than many mediteranean city , in April you can have temperature of 90°F in DC ! DC is more know for this extremely hot summer than the winter ! OK you consider DC as artic , personnally i consider DC tropical because the summer are long and tropical.
In Atlanta it also snows in winter.
Summer in Washington DC are clearly more long , warmly on average and with an tropical atmosphere than summer of Casablanca or Malta especially when Casablanca is nothing subtropical in climate because the summer are not rather warmly on average and didn't have tropical characteristic in any seasons.
Casablanca is clearly "maritim" in temperature and meditteranean in precipitation , a subtropical climate is a climate with a tropical characteristic in a seasons and your climate picture didn't have a tropical characteristic but Osaka is very clearly subtropical and have a lot of tropical characteristic with a very sub-tropical vegetation with tropical origin.
Malta : not subtropical , not biome with tropical origin and not tropical characteristic.
Casablanca : not subtropical , not biome with tropical origin and not tropical characteristic.
Osaka : clearly subtropical with a lot of tropical characteristic and a biome with tropical origin.
DC : subtropical with snow days in winter but some days in winter overtake 70°F (21°C) , and DC have mixed biome (temperate and subtropical) the subtropical forest in DC grow with subtropical weather therefore DC have a subtropical climate , this is the northeast city in United state with this climate.
DC is climatically closer to New orleans than of Montreal, Minneapolis or Winnipeg ... !
Memphis have a subtropical climate and have a very similar vegetations than DC and Malta have not subtropical vegetations because the vegetations in Malta don't grow with tropical conditions !!!
The vegetations in Malta are a meditteranean vegetations, it's different, Malta can have a dry subtropical climate but don't have subtropical vegetations !
It is important to understand that before continuing the debate !
Cities like Shanghai, Wuhan, Tokyo, Birmingham, Nashville etc. doesn't have any palmettos however they are subtropical. Average subtropical climate are not defines by palmettos vegetation but by a sort of "temperate like" vegetation which are suitable with subtropical conditions just like in the cities I mentionned before.
Washington D.C. has a mixed climax biome with subtropical and continental essence, Philadelpia and NYC has a continental climax biome and Houston Texas is located between a subtropical forest climax biome in the East and subtropical climax prairie in the West.
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Post by Milwaukee Mass Murderer on Jul 14, 2018 23:23:39 GMT -5
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Post by firebird1988 on Jul 16, 2018 13:35:47 GMT -5
What is this subtropical index and how do you guys calculate it?
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