Ilha de calor urbano

Tópico em 'Climatologia' iniciado por mesogeiakos 19 Ago 2010 às 20:59.

  1. mesogeiakos

    mesogeiakos
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    What is A Spencer study?Provide to us the link the name etc.But most importantly relate this to Athens basin exceptional climate as there is already academic debate on this.Can you tell extract this and apply it academically to the case of Athens?

    Oh and btw we have been through this.You have failed to provide me the exact WMO rules from the updated version.Where are the OFFICIAL WMO standards?Give me the verse and you ll have it at at a split of sec.

    Apart from you arbitrary opinions on whether on not the national authorities of Greece apply WMO criteria,you should already know that all the Athens basin stations have WMO id's regardless of what you think or believe.Shall I start giving you the id's one by one?
     
  2. mesogeiakos

    mesogeiakos
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    Thank you for the good words on my country.Greece does not really need ''proteges'' though.

    Now we go to the point of discrediting an academic publication because ''it is laughable to me''. In this case I take it you are a PhD holder in Meteorology who can easily scrutinise the Observatory team right?

    Btw it is the introduction of 1985 paper that I have posted maybe more than 3 times and just because ''you think'' it is laughable this makes a valid argument.Spare me
     
  3. J.S.

    J.S.
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    Re: Seguimento Europa 2010

    Well, they need to be pretty warm. Alanya has 30 C and has a tmin of 25,9 C. That is still considerably lower than Elefsis.
    Same is true for Larnaca (cyp): 30 C and 25.6 C tmin. Paphos (cyp) 24,4 and water 30 C...Tel Aviv: 25,9 watertemp 30 C. To have the same range, the seawater has to be at 31-32 C to have that minimumtemperature. And the sea near Megara aswell. This is 4 C higher than almost any other part of Greece.
     
  4. mesogeiakos

    mesogeiakos
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    Re: Seguimento Europa 2010

    Yes but where do the temps come from?I gave you an academic extract that discusses the Elefsina warm waters...and you are giving me wetteronline?
     
  5. Dan

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    Re: Seguimento Europa 2010

    29,0ºC
    Porto/S. do Pilar
    28 de Fevereiro 1960
     
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  6. J.S.

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    Re: Seguimento Europa 2010

    Are suggesting that you need to be have a degreet to discuss something or discredit something? Because you don't. If you want to submit a paper to Science or Nature, you will be peerreviewed and it wil be accepted or rejected and not because you have a PhD.

    The paper lacks any explanation on what the magnitude of these circumstances are. And there is no need to have a PhD to see that.

    Was this paper peerreviewed and published in a peerreviewed paper? If not, it is no better than any other paper you and I can write. Becuase the thesis is not tested. I did the reviewing. The fact is in science, you need to prove what you say and in this paper they did not prove anything. It might as well have been a paper by a student, not someone who already has a PhD.
     
  7. J.S.

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    Re: Seguimento Europa 2010

    I do and I did not see any paper on the current watertempeature in the Elefsina bay. Megara is not in that bay, also the same temperature as the enclosed Elefsina bay?
    But I see you have an academic paper on the current temperatures there. I would like to read it. And Megara please and Athens: these three share similar nighttime temperatures.
     
  8. mesogeiakos

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    Re: Seguimento Europa 2010


    Well pity you havent bsc I have posted from day one.Here is the link where I discuss it and translate it in english


    http://www.ukweatherworld.co.uk/forum/forums/thread-view.asp?tid=38292&start=1

    Now can you give as an academic refutation on the Elefsina water's apart from b rated sites?
     
  9. mesogeiakos

    mesogeiakos
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    Re: Seguimento Europa 2010

    Actually what I am saying is that in order to be able to refute academically this paper you need to have a publication on Athens.Can we see yours?

    You seem to be able to enlighen us all even in Greece on how an area by the sea is so warm in Athens.Pity we have been trying so long to pinpoint the reasons.
     
  10. J.S.

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    Re: Seguimento Europa 2010

    Well, since you are asking for it. Here it is. 2005. I'd say it is more recent and if we look at the quotes, this paper is not on its own...

    http://www.inive.org/members_area/medias/pdf/Inive%5Cpalenc%5C2005%5CStathopoulou.pdf

    The daytime (which is less than the nightime UHI) according this more modern study in the Athens area in the warm season is between 0,4 (urban, densily build), 2,9 (mixed urban-suburban) and 3,7 (suburban) compared to rural. To be clear: 50% of the Athens area is in the mixed or suburban category judging from the map enclosed in it.
    Where is the negative heatisle? Daytime we are talking about here. At night, the difference is known to be bigger...

    Here is a part of this study, refering to a 2004 and 2001 study:

    "For the region of Greece, a recent study using thermal remote sensing data of medium spatial resolution showed that the surface UHI intensity
    at night can reach up to 8oC for the cities of Thessaloniki and Heraklion and up to 7oC for the cities of Patra and Volos (Stathopoulouet al., 2004). From another study using air temperature measurements (Santamouris et al.,
    2001), it was found that during the summer period, daytime UHI intensity of Athens is close to 10oC for the central Athens area, whereas the night-time UHI intensity can rise up to 5oC. This study presents a methodology for estimating the surface UHI intensity of urban areas by using satellite images in combination with land cover information provided by the Corine
    land cover database for Greece. The method is applied to the major cities of Greece: Athens, Thessaloniki, Volos, Patra and Heraklion in order
    to study their thermal environment."


    So how about that...no heat isle in Athens hmmm....

    O yeah "Received 4 October 2005; revised 16 June 2006; accepted 21 June 2006." It is peerreviewed.
     
  11. J.S.

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    Re: Seguimento Europa 2010

    Here is another one, form an abstract:

    "Land Surface Temperature (LST) is a significant parameter for identifying micro-climatic changes, their spatial distribution and intensities in relation to the urban environment. In this study, LST is estimated using thermal infrared data as acquired by the Advanced Very High Resolution Radiometer (AVHRR) instrument onboard the National Oceanic and Atmospheric Administration (NOAA) satellite and by using a split window algorithm that is adjusted to account for the region of Greece. For the assignment of the surface emissivity, a new methodology based on the Coordination of Information on the Environment (CORINE) Land Cover database for Greece is used. The algorithm is applied to a night-time series of NOAA/AVHRR images of Greece in order to produce surface temperature maps of an enhanced spatial resolution of 250 m for the cities of Thessaloniki, Patra, Volos and Iraklion, which are the most significant harbour cities of Greece. Results indicate the presence of urban heat islands (UHIs) in each case study, with highest temperatures detected along the coastal zone of the harbour cities resulting from denser urban fabric and road network as well as intense human activity. "

    Coastal zone....now where is Elefsina, Megara, Athens etc located? In the coastal zone. And how do they look: right: roads, buildings etc. Mind you that some of those cities have less than 100000 inhabitants.
     
  12. mesogeiakos

    mesogeiakos
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    Re: Seguimento Europa 2010


    Oh really??And where are the exact stations?In question?Even the 1985 paper discusses 2-3min changes and you have been refuted once with a 2007 on the negative UHI and now once more



    Here you go.It clearly states that the increase can not be established that it is due to other factors or cyclic change
    http://www.inive.org/members_area/medias/pdf/Inive\Milos2006\03_Assimakopoulos_01_4P.pdf
    [​IMG]



    Livada 2006.Oh dont forget the 2007 paper on the negative one

    Now how do this relate to the Elefsina airport station exactly?

    So for the Observatory station per se...we can not establish that it is on a cyclic change of temp trends etc...Now care to give us something on Elefsina per se?
     
  13. mesogeiakos

    mesogeiakos
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    Re: Seguimento Europa 2010


    Again shall I remind the study on Elefsina per se?Where is Elefsina bay on this one?
     
  14. J.S.

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    Re: Seguimento Europa 2010

    Elfsina is near the coastm in an suburban area, also according to your 1985 study I guess. So...
     
  15. J.S.

    J.S.
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    Re: Seguimento Europa 2010

    Please do, And not in Greek. That is what I got last time from you.
     

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