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In depth analysis of the Athens Riviera climate and palm potential


southathens

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At this altitude you are prone to register lower Ts than the coastal areas of the Athens Riviera

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Only problem is that in average temps coastal areas after Varkiza such as Lagonissi and Thymari-Katafygi, to name few,  are even colder than my place. And they are at sea level. How do you explain this?

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22 hours ago, Phoenikakias said:

Only problem is that in average temps coastal areas after Varkiza such as Lagonissi and Thymari-Katafygi, to name few,  are even colder than my place. And they are at sea level. How do you explain this?

Annually speaking? Yes it might be true since less UHI and much lower summer maxes compared to more urban Athens. This has a serious impact on avg annual Ts

Edited by Manos33
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Around 107 tropical nights per year in Downtown Athens for the period 1991-2020. This must be the highest in mainland Europe. The highest I can find in Iberia is 93 tropical nights per year in Cadiz.

Screenshot 2024-01-28 at 8.34.28 AM.png

Edited by Manos33
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On 12/31/2023 at 1:39 PM, Manos33 said:

And here is a view of the Monemvasia WMO station.

Perfect set up as per WMO standards since the station is located on the ground overlooking the sea. 

Easily the area with the mildest winders in mainland Greece. Also probably one of the few locations in mainland Greece which straddles the 11a hardiness zone. Probably also the extreme SW tip of Peloponnese might also be 11a. It's a pity we don't have a station over there!

Screenshot2023-12-31at1_33_20PM.png.b85b7699947b25020ba68defa73ebce6.png

 

And below the updated climate data for Monemvasia

image.png.eb059b81f36a097f76aebe34c1f0c9b2.png

 

Btw one more interesting fact about Monemvasia is that on the 27th of June 2007 it registered a minimum T of 35.9C which makes it the record high minimum temperature both in mainland Greece and mainland Europe!

 

image.png.035ea8892ed02fa2e3d5ac50bf0566b9.png 

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Also Monemvasia records 133 tropical nights per year...

Astonishing considering we are talking about mainland Europe here and that Tenerife is also around 130 tropical nights per year..

Monemvasia must be the record holder for highest number of tropical nights in mainland Europe. The Iberian peninsula barely manages 93 tropical nights.

image.png.b5b26c6abb7269721c31307d9e33c143.png

Edited by Manos33
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On 1/26/2024 at 7:54 PM, Manos33 said:

Annually speaking? Yes it might be true since less UHI and much lower summer maxes compared to more urban Athens. This has a serious impact on avg annual Ts

Manos, in the weather application of my smart phone appear two locations in Athens with some considerable T difference. Do you happen to know which are those locations?

Screenshot_20240129_075610_Weather.jpg

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54 minutes ago, Manos33 said:

probably Anavysos NOA is one of them

https://penteli.meteo.gr/stations/anavyssos/

No, Anavyssos is clearly a third station. For Athens there are clearly another two stations. Look carefully at the posted picture, it is a screenshot of application displaying 3 distinct T actual values according to a particular location.

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56 minutes ago, Phoenikakias said:

No, Anavyssos is clearly a third station. For Athens there are clearly another two stations. Look carefully at the posted picture, it is a screenshot of application displaying 3 distinct T actual values according to a particular location.

This is random. I mean I have no idea what application you are using and even so these are not to be taken seriously.

Please visit NOA Attica live map to see exact conditions from official WMO stations

https://www.meteo.gr/attica/

We are currently experiencing the coldest day so far during 2023-2024 winter...

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3 hours ago, Manos33 said:

This is random. I mean I have no idea what application you are using and even so these are not to be taken seriously.

Please visit NOA Attica live map to see exact conditions from official WMO stations

https://www.meteo.gr/attica/

We are currently experiencing the coldest day so far during 2023-2024 winter...

Yet application data seem pretty accurate, when I compare them with car's thermometer.

Screenshot_20240129_172509_Weather.thumb.jpg.f51d9af0baac446a146f955b8aef6b95.jpg20240129_172525.thumb.jpg.f36bc0cbc005baa570b256dd452cfea2.jpg

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Yeah car Ts not really reliable 

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On 1/29/2024 at 2:40 AM, Manos33 said:

 

Btw one more interesting fact about Monemvasia is that on the 27th of June 2007 it registered a minimum T of 35.9C which makes it the record high minimum temperature both in mainland Greece and mainland Europe!

 

image.png.035ea8892ed02fa2e3d5ac50bf0566b9.png 

😂:P

 

Screenshot2024-01-30at12_03_56PM.thumb.png.6fa2a4bca65d4008931cf760eb43be58.png

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  • 3 months later...

Here is a 17 year POR comparison between the official Stevenson Screen station in Downtown Athens and the nearby Davis fan aspirated pro plus 

Screenshot2024-05-13at1_15_17PM.png.01f5753659204c604f1060649c00aece.png

Immediately two major takeaways:

1) Trust the minimum Ts of rooftop Davis fan aspirated stations. They are actually lower year round by about 0.2C despite it being a rooftop station. 

2) Look at how the Davis fan aspirated station significantly underestimates max Ts. Especially during the two hottest months we see a -1.1C T difference when compared to the Stevenson Screen data.  That's obviously due to the mechanical aspiration. 

Mind you that this is what we see in almost EVERY other location we have run the past 19 years comparisons between our Davis fan aspirated station network (600+) and the nearby Stevenson Screen stations here in Greece.

Basically it goes to show how extremely accurate Davis fan aspirated stations are. They are probably the best in world beating in terms of accuracy the traditional Stevenson Screen ones. 

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Not only that, it's located at 'half' the elevation at 50 meters vs 100 meters amsl, still in downtown location, and still is cooler in all regards. For such sunny locations and with low wind the fan makes a big difference. Perhaps in northern Europe the distinction is less clear. 

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23 hours ago, Aceraceae said:

Not only that, it's located at 'half' the elevation at 50 meters vs 100 meters amsl, still in downtown location, and still is cooler in all regards. For such sunny locations and with low wind the fan makes a big difference. Perhaps in northern Europe the distinction is less clear. 

Yes, especially in hot areas during the summer fan aspirated stations are a silver bullet to accurate readings. 

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  • 1 month later...

The new NOA met station in the Athens Riviera located in Agios Kosmas next to Hellenikon old AP shows pretty strong foehn winds effect with the meltemi winds. 

Two days in the row it recorded the second highest T in Attica with 37.7C

Btw 10 days ago with the big heatwave in Greece Crete recorded 44.5C

Its turning out to be a very hot summer in Greece and tropical cultivations might suffer.

 

Screenshot2024-06-20at1_45_22AM.png.3a620aa05918f9f0e0baa05ec5954aff.png

Screenshot2024-06-20at1_48_06AM.png.e81c3e0228dd8a0f6c0ccd95b1be88df.png

 

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