Athens to experience 50°C during the summer/ Greek Ministry of Climate Change

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mesogeiakos

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However, Lamia has a absolute maximum of only 46.5°C (45.2ºC in Larissa), versus 48ºC in Athens-Elefsina and Athens-Tatoi.

http://www.hnms.gr/hnms/english/climatology/climatology_region_diagrams_html?dr_city=Lamia
http://www.hnms.gr/hnms/english/climatology/climatology_region_diagrams_html?dr_city=Larisa

Personally I think the real greek record is 46.5ºC in Lamia. In the future, 48ºC ​​of Athens will be considered the same as 56ºC in Libya, a fraud.

In Greek a smart proverb for this post would be '' Ο καθένας με τον πόνο του ;)''
 


mesogeiakos

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Here is a nice one from Greece's biggest blog


http://tro-ma-ktiko.blogspot.com/2011/07/40_21.html
Πέμπτη, 21 Ιουλίου 2011
40 βαθμοί χθες στην Νέα Φιλαδέλφεια
39.5 βαθμούς κατέγραψε ο σταθμός της ΕΜΥ χθες στο Άλσος της Νέας Φιλαδέλφειας, φέρνοντας έτσι... την κορύφωση του χθεσινού καύσωνα για την Αθήνα.

Σύμφωνα με την Εθνική Μετεωρολογική Υπηρεσία η υψηλότερη τιμή στην Αττική σημειώθηκε στην Νέα Φιλαδέλφεια, ενώ το αεροδρόμιο Ελευθέριος Βενιζέλος κατέγραψε 38.4 βαθμούς. Η υψηλότερη τιμή στην Ελλάδα σημειώθηκε στην Λαμία και Λάρισα με 40.8 βαθμούς. Από σήμερα αναμένεται πτώση της θερμοκρασίας κατά 3 με 4 βαθμούς

Α. Ν. Ερασιτέχνης Μετεωρολόγος
ΑΝΑΓΝΩΣΤΗΣ
Αναρτήθηκε από tromaktiko στις 1:44 μ.μ.
 

mesogeiakos

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And here is Ian's quality work as always from the UKww forum

The updated figures from the 1st of June till 21st July inclusive with Attica on the top spot yet this summer

You have to give credit to Ian Williams though.His persistence and dedication to this is remarkable and he is not a Greek or Spanish national.Way to go Ian ;)

capturenxh.jpg
 

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Yeah, no doubt that the strong UHI that characterizes Athens makes some difference with these conditions. Larissa has an airport station, the city is not huge, its UHI can reach the airport only with given wind directions; while Filadelfia is sourrounded by the city and it will be involved by UHI under most wind directions. It would be very interesting to see a comparison between Larissa and Nea Filaldefia without the UHI-boost of Athens, a thing that is impossible with contemporary data and will not be possible very soon. Santamouris & collegues are proposing lots of countermeasures to face UHI but it takes time to apply them.
Somewhere I have a WMO stations database with 1961-1990 means for a lot of stations (over 900 stations), and Larissa is one of them. But I fear there is not Nea Filadelfia. In 1961-1990 perhaps the UHI of Athens il less intense than now; it seems that it exploded and became tremendous as it is now only in the second half of 80s.

If you are still in Athens, could you do a couple of photoreportage please?
We are quite interested in the pictures of Thiseio and the new Nea Filadelfia sites.
About Thiseio, I have already seen pictures and there is nothing to hide. It is better than most of old Italian Hydrographic stations like those in the database I sent you last year. It has about 8-11 meters range of lawn around, so it is reasonable. About Nea Filadelfia, the interest is in the trees sourrounding it. If they cut some and created a large surface of only grass, this would impact the sky view factor of the station (decreasing tmins) but also it would reduce shadowing, increasing tmax. The meteogr reportage suggest that in late 2009 the station was shadowed by trees.
Instead I believe it is not safe to try to take pictures of Elefsina: the probability of suffering a gunshot is high
 

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Exactly what I wrote last : Sevila is fishy (look at a picture and you soon understand why exactly).

I believe that the bad location of the Sevilla S.Pablo station still needs to be evaluated. In a Spanish forum (http://foro.meteored.com/meteorologia+general/sevilla+aeropuerto+vs+sevillatablada-t80050.0.html), this picture was published:


That position resembles a urban station rather than a climatic rural station. In my opinion it would be questionable even for a urban station, given the violation of the 100 ft from asphalt and large paved surfaces criterium.

But the coordinates provided by AEMET (http://www.aemet.es/es/elclima/datosclimatologicos/valoresclimatologicos?l=5783&k=and) indicate this place http://maps.google.es/?q=Est: Sevil...66667&spn=0.182837,0.291824&z=11&output=embed

And in that exact place we find this structure



lezl2.jpg


That stuff fits the appearance of an automated weather station (see below an Italian AM/ENAV automated station for comparison), it fits the coordinates provided by AEMET, and it fits WMO guidelines. The other location does not fit any of these. I am uncertain about, but I believe that the most likely location is the one indicated by AEMET, next to the airport runway. The previous one can be an old abandoned station, perhaps the previous location. This is suggested also by the lack of anemometer. We see rain-gauge, shelter, but no anemometer.

A similar circumstance occours with the Cordoba station. We can find in the internet pictures of a shelter next to asphalt, but with no anemometer. When we check the location in the Aemet website we find structures in the lawn among two lanes of the airport without any asphalt, so the stuff is unclear. :huh:

This does not reduce the anomaly of the temperatures reported by Sevilla S.Pablo. It might be in a particular place, it might be uncalibrated (but WMO reccomends to check sensors very often), it can have lots of other problems, maybe also they set an offset to align it with the averages of a previous location (I don't think so, but some do that). The differences from the sourrounding agroclimatic stations in my opinion are too large... :huh:

here is an Italian AM/ENAV station for comparison with the stuff above.
 

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Cirrus
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This is the best view I can get from Bing Maps.



(link: http://www.bing.com/maps/?v=2&cp=q7...here1=37,4166666667 -5,8791666667&form=LMLTCC )

It witnesses only that there is something in the point indicated by AEMET as the station location for Sevilla S.Pablo. A closer photo is needed to clarify the topic.

An interesting detail. In another part of the airport there is a very similar structure (the white and red one), and at the end of the cement sidewalk there is something which is compatible with a Stevenson shelter profile. Click the link above, it is very clear.
http://www.bing.com/maps/?v=2&cp=q7...here1=37,4166666667 -5,8791666667&form=LMLTCC
But this place is quite far away from the one indicated by AEMET. Unzoom and the AEMET location gets displayed.
 

mesogeiakos

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Yeah, no doubt that the strong UHI that characterizes Athens makes some difference with these conditions. Larissa has an airport station, the city is not huge, its UHI can reach the airport only with given wind directions; while Filadelfia is sourrounded by the city and it will be involved by UHI under most wind directions. It would be very interesting to see a comparison between Larissa and Nea Filaldefia without the UHI-boost of Athens, a thing that is impossible with contemporary data and will not be possible very soon. Santamouris & collegues are proposing lots of countermeasures to face UHI but it takes time to apply them.
Somewhere I have a WMO stations database with 1961-1990 means for a lot of stations (over 900 stations), and Larissa is one of them. But I fear there is not Nea Filadelfia. In 1961-1990 perhaps the UHI of Athens il less intense than now; it seems that it exploded and became tremendous as it is now only in the second half of 80s.

If you are still in Athens, could you do a couple of photoreportage please?
We are quite interested in the pictures of Thiseio and the new Nea Filadelfia sites.
About Thiseio, I have already seen pictures and there is nothing to hide. It is better than most of old Italian Hydrographic stations like those in the database I sent you last year. It has about 8-11 meters range of lawn around, so it is reasonable. About Nea Filadelfia, the interest is in the trees sourrounding it. If they cut some and created a large surface of only grass, this would impact the sky view factor of the station (decreasing tmins) but also it would reduce shadowing, increasing tmax. The meteogr reportage suggest that in late 2009 the station was shadowed by trees.
Instead I believe it is not safe to try to take pictures of Elefsina: the probability of suffering a gunshot is high

Virtually impossible to do that since the new station is in the renovated area with far better security and plus you need to get a special permit to enter it.Regarding the trees in N.Filadelfeia that was from the old station and i doubt that those pics are real,it amazes me that HNMS pics have leaked so their validity at face value

Regarding Thiseio I have been there once in an educational school trip and remember seeing the station even though i can hardly remember it as i was little.

Besides the UHI hypothesis on N.Filadelfeia specially with Athens' complex microclimatic conditions can not be assumed safely.Given the incredibly low tmins I doubt you can hardly get UHI in N.Filadelfeia.Lastly the data for the comparisons not only with Larisa but with other cities are in the HNMS and from 1955 till 1997 data for both areas N.Filadelfeia has the lead not only over Larisa but over the whole country
 

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Cirrus
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Virtually impossible to do that since the new station is in the renovated area with far better security and plus you need to get a special permit to enter it.Regarding the trees in N.Filadelfeia that was from the old station and i doubt that those pics are real,it amazes me that HNMS pics have leaked so their validity at face value

Regarding Thiseio I have been there once in an educational school trip and remember seeing the station even though i can hardly remember it as i was little.

Maybe you are right, but please take a look again of the reportage

http://www.meteoclub.gr/themata/egkyklopedia/1801-met-stathmos-emy-filadelfia/

http://www.meteoclub.gr/themata/egkyklopedia/1801-met-stathmos-emy-filadelfia/

Then watch in HNMS website the coordinates they provide for the weather station of Nea Filadelfia
http://www.hnms.gr/hnms/english/obs...?&dr_region=ObsAttiki&dr_city=ams_filadelfeia

= Longtitude 23ï44'45" / Latitude 38ï2'43"/ Alt. 141m.

= 38°2'43''N, 23°44'45''E

Now enter these coordinates in Bing-Maps and you get http://www.bing.com/maps/#JndoZXJlM...uMDQ0MjY3NzcyNTMzNSU3ZTIzLjc0NDQxNjE4NjI2OQ==

If you zoom at maximum and switch to close view, here is what you get:

http://www.bing.com/maps/?v=2&cp=qb...38,0452777777778 23,7458333333333&form=LMLTCC

Then you can rotate the perspective by using the curved arrows around the N symbol in the right and the results are quite persuasive.

http://www.bing.com/maps/?v=2&cp=qb...38,0452777777778 23,7458333333333&form=LMLTCC

In this one, it is very clearly seen that that station at some times was shadowed. This may account the cases of negative UHI reported by Kassomenos and Katsoulis.
http://www.bing.com/maps/?v=2&cp=qb...38,0452777777778 23,7458333333333&form=LMLTCC

http://www.bing.com/maps/?v=2&cp=qb...38,0452777777778 23,7458333333333&form=LMLTCC

If the reportage is false, it is very well done.

Btw you can do exactly the same for the National Observatory of Athens plant and see the NOA shelter from above, rotate the image etcetera. Appreciable tool.
http://www.bing.com/maps/?v=2&cp=q9...8258&dir=111.93725728881246&sty=b&form=LMLTCC

http://www.bing.com/maps/?v=2&cp=q9...6878&dir=292.74008601861175&sty=b&form=LMLTCC

http://www.bing.com/maps/?v=2&cp=q9...8349&dir=22.270727063495134&sty=b&form=LMLTCC

I have read that NOA has a museum of old instruments. Perhaps it is possible to visit it. I think that if you just phone there to ask (and/or book) they lead you around and show to you all the stuff.

ciao.gif
 

mesogeiakos

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Maybe you are right as well but how on earth did they get permit to shoot it from HNMS?It took me 6 months to take their stupid permit and still was not allowed to photoshoot anything,thats why I seriously doubt it.

Now 3rd day in the row that N.Filadelfeia records Greece's max
with 37.5C this time.In fact its a European max second day in the row

Regarding my visit to NOA its out of the question.I am here with my partner and I dont think he is really eager to do these stuff,instead we are going out and doing real holidays,so maybe next year

capturezb.jpg
 

mesogeiakos

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Getting tiring now to report the same thing over and over again.Nea Filadelfeia again top in Attica with 36.3 and thank god another location took Greece's top spot for yesterday.Xanthi with 36.7.

I am gonna stop reporting daily.At the end of the month I am just going to give N.Filadelfeia mean max!Cheers everyone

captureydo.jpg
 
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