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Dublin Airport's micro climate!

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Comments

  • #62
    DOCARCH
    Moderators, Home & Garden Moderators, Science, Health & Environment Moderators Posts: 17,699 Mod ✭✭✭✭DOCARCH


    octo wrote: »
    The Merrion Square station is in the gardens of Leinster House, just beside the natural history museum. The stevenson screen can be seen through the railings.

    Just wondering now how valuable historic data would be from that station considering in recent years, the lawn of Leinster House was turned into a massive car park, which remained for a couple of years, before being turned back to lawn.


  • #63
    octo
    Registered Users Posts: 321 ✭✭octo


    DOCARCH wrote: »
    Just wondering now how valuable historic data would be from that station considering in recent years, the lawn of Leinster House was turned into a massive car park, which remained for a couple of years, before being turned back to lawn.
    The main problem is the proximity of the buildings. Leinster House itself is just to the west of it, making it just about the driest station in the country. Also, the stevenson screen was under a tree for many years, although I see it has moved now to a better location.

    It's probably valuable in the sense of its central location, but its exposure is very poor.


  • #64
    compsys
    Registered Users Posts: 1,038 ✭✭✭compsys


    It's crazy to think that Dublin Airport's mean temp was only .2 higher than the monthly average for July according to the Met E monthly stats. It felt far warmer in Dublin with the high getting into the 20s on well over 20 days.

    Obviously the station was moved to a much cooler location a few years back so it just goes to show the difference a few hundred metres can make, which seems crazy.

    Phoenix Park recorded a mean temp .7 above average for the month, which I guess feels more representative of the month and for Dublin in general.


  • #65
    Bsal
    Registered Users Posts: 1,766 ✭✭✭Bsal


    The weather station at Dublin airport is in a good location now, its in an open area with no trees, buildings or other objects nearby to influence the data.


  • #66
    compsys
    Registered Users Posts: 1,038 ✭✭✭compsys


    Has anyone noticed that Dublin Airport's mini micro-climate seems to have gone?

    It seems to have coincided with the opening of the North Runway at the airport but maybe that's just a coincidence!

    As has been discussed, DA had a habit of recording very low overnight minimum temps on clear and very calm evenings. This is despite the fact it's in a coastal location - so whilst being kept cool by the sea breeze during the day, especially in summer, it should be kept milder at night.

    However the station often had both the coldest/second coldest temp during the day and among the coldest at night on many nights. And often had monthly mean temps out of synch with the rest of the country - especially the other Dublin stations.

    However, apart from last April, when DA went on a bit of a 'solo run' and recorded a monthly temp of -0.6 BELOW average (while Casement and PP were both well ABOVE average for the month) it's recorded far more 'normal' temps at night over the past few months - with no major monthly anomalies compared to the rest of the country.

    Last night is a good example. It was relatively clam and clear - and also cool. The exact type of night where DA would have been the coldest station in Dublin and among the coldest in the country. But DA 'only' got down to 0º - while Casement (-0.7º) and PP (-0.7º) were colder, as were around a dozen other stations countrywide. It makes total sense that DA would remain slightly milder as it's closer to the sea - but this wasn't usually what happened until recently.

    This is just one example but I've noticed this on dozens of nights over the past few months.

    One for Sryan no doubt!



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  • #67
    Bsal
    Registered Users Posts: 1,766 ✭✭✭Bsal


    It seems to have returned the other night with Dublin airport recording a low of -4.3 while Casement -2.5



  • #68
    compsys
    Registered Users Posts: 1,038 ✭✭✭compsys


    https://www.boards.ie/discussion/comment/120411858#Comment_120411858

    Yes - I noticed that too. It ended up being the lowest recorded temp for all of March.

    But it's been much rarer recently. It'll be interesting to see how the next few weeks play out. As it's often on calm, clear nights in summer when some of the widest anomalies occur.



  • #69
    sryanbruen
    Registered Users Posts: 13,505 ✭✭✭✭sryanbruen


    Dublin Airport in a world of its own right now. The lowest in the UK/Ireland at this moment and 5.1C vs Casement's 12.9C.

    image.png


    Photography site - https://www.sryanbruenphoto.com/

    Weather photo portfolio - https://sryanbruen.myportfolio.com/weather-1



  • #70
    .Donegal.
    Registered Users Posts: 1,737 ✭✭✭.Donegal.


    https://www.boards.ie/discussion/comment/120444391#Comment_120444391

    I remember reading the March report and was confused by it being listed as the coldest recorded temperature for March as multiple official climate stations recorded colder temperatures around the 8th of March. ILLIES ACS in inishowen recorded -6.5. Do they only use the main stations for those reports? I’m sure I’ve seen climate stations mentioned before on them though.



  • #71
    sryanbruen
    Registered Users Posts: 13,505 ✭✭✭✭sryanbruen


    https://www.boards.ie/discussion/comment/120502149#Comment_120502149

    The monthly weather summaries are specifically based on the 25 synoptic stations that you see on pages like yesterday's weather. The climate stations used to be in the monthly weather bulletins which they stopped producing after December 2015 unfortunately. The "daily weather" section of the past weather statements page uses climate stations from a certain point - currently up to February 2021. I don't know what's taking their time in updating to more recent months, all of 2021 should have been updated now to include at least.

    The odd time they have mentioned a climate station in the summaries including Durrow breaking the August record in 2022.

    Photography site - https://www.sryanbruenphoto.com/

    Weather photo portfolio - https://sryanbruen.myportfolio.com/weather-1



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  • #72
    .Donegal.
    Registered Users Posts: 1,737 ✭✭✭.Donegal.


    https://www.boards.ie/discussion/comment/120503212#Comment_120503212

    Thanks good to know. Pity they stopped using them. Edit - Do you know how long ILLIES ACS has been in operation? I only noticed it for the first time last year.

    Post edited by .Donegal. on


  • #73
    pauldry
    Registered Users Posts: 6,876 ✭✭✭pauldry


    Temperature in Dublin Airport now 1c while its 5c in Casement.



  • #74
    compsys
    Registered Users Posts: 1,038 ✭✭✭compsys


    https://www.boards.ie/discussion/comment/120517223#Comment_120517223

    DA at 0º, Casement at 1º, and PP at 2º on the 11pm reports - so nothing overly unusual now. PP always a degree or two warmer given its sheltered location. And the MET E forecast does have Dublin getting down to -1º.

    Will be interesting to see if DA goes off on a tangent later tonight or whether its overnight minimum remains close to the other nearby stations and within the forecast range...



  • #75
    sryanbruen
    Registered Users Posts: 13,505 ✭✭✭✭sryanbruen


    https://www.boards.ie/discussion/comment/120503601#Comment_120503601

    A lot of the WOW climate stations are not available on the historical database of met.ie which provides information on the stations unfortunately. There has been a rainfall station in operation in the same location since 2002. Perhaps this is the same station and parameters like temperature are just part of the automatic station but are not considered for climatological analysis? Makes you wonder about some of the other ACS on WOW such as Clonmel and Bunclody which were noted for high temperatures last summer but are not on the historical database.

    Photography site - https://www.sryanbruenphoto.com/

    Weather photo portfolio - https://sryanbruen.myportfolio.com/weather-1



  • #76
    compsys
    Registered Users Posts: 1,038 ✭✭✭compsys


    Well. The debate has been settled. DA was definitely moved to a cooler location! Especially at night.

    According to the new 30-year climatic averages the yearly mean max and min temps are:

    1981 - 2010 13.3º/6.4º

    1991 - 2020 13.3º/6.1º

    In spite of global warming, the mean max temps are similar over the year with some small variations (June days are fractionally warmer, July days have seen no change, August days are fractionally cooler).

    But some big changes at night.

    Average overnight April low at the station is now 4º compared to 4.6º previously.

    Average May low is now 6.6º compared to 6.9º previously.

    Average June low is now 9º compared to 9.6º previously.

    Average July low is now 11.3º compared to 11.7º previously.

    Not surprised about the overnight temps. But amazed the station is no warmer during the day.

    https://www.met.ie/cms/assets/uploads/2023/07/www_met_ie_dublin_9120-1.htm



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