Há uma coisa que o JS tem que ter em conta.
Se um local é o mais quente numa região inteira, este lugar não pode ser vulgar, nem pode receber metodologias teóricas aplicadas à maioria de outros sítios.
O mesmo se aplica ao lugar mais frio numa região inteira.
Moncorvo tem a mesma temperatura média que Beja nos 2 meses mais quentes do ano ( sensivelmente) e no entanto está muito mais alto e a uma latitude muito mais a norte (lá se vão duas das variáveis utilizadas...). Isto porque esta região não tem um comportamento normal em que se possam aplicar regras gerais e esperar resultados idênticos aos outros locais. Tem que ser feita uma abordagem à escala local e respeitar as suas características específicas.
And how is this remark not mere theory. And I at least calculate things, I am not guessing that (la vão duas das etc.). La vão nada....Vamos a ver.
So we wonder: where does it start. This bigger continentallity? Not in Mirandela it apears, because taking the 2,37 K/100 km throughout the country as I showed gives a very good approximation. From Beja, I calculated 31,99 C for Mirandela. It is 31,8. If it would be much more continental, Mirandela should have had a higher figure at least and not a (marginally) lower. Bragança may be then...I calculated, from Beja data a 28,13 C for Bragança. It is 28,5. So it is 0,37 K difference. Not a much higher continentallity, not 5 K higher which is needed...
I have no data from Moncorvo, but mind you it is not much higher at all. Depending on where they put the station it is 60-160 m higher than Beja.
Besides, I do have data form Miranda do Douro, so we can compare.
But this is what you mix up: 2,37 K is the average in which continentality rises from the coast to the inland. The more inland you go, the slower it rises.
If you would go from lisboa to Madrid, the number would not be 2,37 K. It would be less because the rapid rise you get at the first 20 km from the sea has less influence on a 100 km than a 400 km journey.
Moncorvo IS more continental. It is 180 km from the sea and Beja 110 km or so (SW-W-NW). But its continentality just doesn't rise any faster because from 110-180 km the number is more constant than from 0-110 km...Remember, this is in summer.
Another point. This is about Tmaximas. Now you start to talk about somehting different. Look again at Miranda do Douro.
Tmediadamedias do julho: 21,1 C
BEja: 24,2 C
Difference: 3,1 C
Mediadasmaximas: 28,7.
Beja: 32,8. Difference is 4,1 C
MEdiasdasminimas: 13,5 C
Beja: 15,6 C. Difference: 2,1 C.
So for Moncorvo, something similar wil be true. On averag comparable, higher nighttime and lower daytime temperature.
The smaller difference at night could be due to the fact that the wind abates at night and strentghens at due, due to insolation and the build up of the thermical low pressure area in summer over Iberia.
Butof course, I can calculate Miranda do Douro now. If you are right, we may expect a much higher temperature than my calculations show. Right?
It s 235 km inland, whereas Beja is 120 km (average still SW-W-NW). so that is 115 km difference. 1,15 *2,37= 2,72 degrees warmer.
Altitude difference is a bit diffucult. It depends where Mirando do DOuro station is located. I'd say it is at 600 m height. So it is 360 m higher than Beja.
3,6* -1= -3,6.
And finally, Beja is 380 km to the south. that is 3,8 * 0,6 = -2,28 C cooler.
We get -3,6 -2,28 + 2,72 = 3,16 K cooler. This is very well in accord with the average temperatures BTW. But we ar enot looking or that.
32,8 -3,16 = 29,64 C for Mirando do D. The real temperature is 28,8 C in july. So my calculations are 0,84 K too WARM! Some reasons: it can easily be located higher, continentality changes less and less the more you go inland. So from Beja to Miranda (120-235 km inland this could be lower). If it is situated at 700 m height, it adds up better. Still, as of now: the Douro river interior does not signal a much stronger continentality when compared to the 2,37 K/100 m Portuguese standard. But it is more continental based on its wider distance from the sea.
So I guess you better do the calculations first before you are predicting I and my calculations will go wrong. They will by the way. But not enough to come to the 5,5 K needed. Not even 1 K. Inthis case, it is the other way around...To the disadvantage of what you supposed would happen.
É evidente que o Alto Douro, tem uma eficiência térmica estival acima do normal. Não se pode dizer que um local no Alto Douro há mesma distância do mar que um local no Interior do Alentejo, tenha o mesmo nível de continentalidade, pois o Alto Douro tem montanhas de mais de mil metros tanto a Norte como a Oeste, por exemplo, que o Alentejo não tem. Claro que também a Oeste, o litoral norte tem mais humidade e frescura, que o litoral alentejano, mas também logo pouco depois da costa, a influência marítima esbarra com montanhas que actuam com barreiras de condensação e como senão bastasse, o cortejo de montanhas não se fica por aí, indo praticamente até aos bordos da bacia do Alto Douro, multiplicando a aridez e a continentalidade, sobretudo no verão. As precipitações médias anuais atingem níveis baixíssimos nesta região, bem mais baixos até que no interior mais cálido e árido do Alentejo. Isso aliado ao facto de estar rodeado de montanhas, concentra ali níveis de calor bastante elevados.
É evidente que muito provavelmente existem fohen, ventos secos e quentes, aridez, irradiações a níveis que muitos de nós nem faz muito ideia, por isso parece-me mais prudente, incutir o debate sobre QUAIS os locais provavelmente mais quentes, para então poder fazer umas medições.
Now this is theory. These are all words, a rougher estimation you cannot get. I do the calculations, I do so clearly. You know how I do it and it adds up all the time. It clearly does very well when I use Beja as a basis to calculate the temperatures in these Douro situated places: Mirandela (+0,19 K error), Bragança (-0,37 K error), Pinhão (-0,2 K error), Miranda do Douro (+0,84 K error). "+"= My calculations showed too high temperatures, "-"=
my calculations showed the station to be too cold. It needs to be 5,5 to 8 K too cold to come to your values. I come no further than 0,37 K too cold....
in Bragança BTW. Not in any valley...
I guess this Douro story in Portugal is based ontwo things.
1) Compared to the many, higher situated places there the Douro valley is exceptionally hot. People there noticed that and talked about it.
The difference there is much bigger than in Alentejo, where we see all values within 2 K from oneanother. 32,8 in Beja, 33,6 in Elvas (found it too, so my calculation in the prior message was spot on again) and 34,7 or so in Amareleja. That is considerably less than 28,5 in Braganca to 33,5 in Pinhão or even 31,8 in Mirandela.
2) May be the humidity is much higher there as well. At least that is what I was told. This could give a very warm sensation. The higher moisture levels could be seen in the warmer valleys at night and cooler temperayures at day.
This is true for Miranda do Douro and Pinhão. Compared to Amareleja and Beja, the daily amplitude in the Douro is clearly smaller. Moisture is a good way to create this.
Fohn effects you say. 1,0 K /100m IS the fohn effect. The fohn effect does is this big. At one side of the mountain temp drops with 0,6 k/100 m. After 2000 m temp is 12 C lower. The air is dry and begins to ascend with 1,0 K/100m. 2000 lower it is now 20 C. So after 2000 m height difference in this situation, you have gain 8 C. The problem is: this dry air is not confined to the mountain, but in Portugal and certainly in Baixo Alentejo, the air is already very dry. Therefor, there the temperture still rises with 1 K/100m...