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14-07-2018, 07:01   #16
Gaoth Laidir
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I wonder will the anemometer move, though. It's south of the midpoint of the current runway in bsal's image above. I suppose the solution is to install new independent anemometers at either end of the new runway for ATC to report local wind conditions to traffic using that runway. There already is one such anemometer at the threshold of the current runway (I posted it above). In that case the station meteorological and climatalogical wind data will remain unchanged as they can still come from the main anemometer.

Last edited by Gaoth Laidir; 14-07-2018 at 07:04.
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20-07-2018, 11:05   #17
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I received a reply from Met Eireann regarding the email I sent about Shannon airport. I've asked permission to post the contents here and he's ok with it so here's the response

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Hi David,



Regarding the exposure at synoptic sites:



Synoptic sites are chosen carefully to ensure compliance with WMO guidelines, both for realtime ‘synoptic’ observations and with a view to maintaining long term records. One of the factors take into account is the likelihood of future development within the locality of the site.



At airports, sites can become encroached by development works which are outside our control and have not been foreseen. We aim to achieve a balance between the continuation of record taking in a unique location versus relocating an observing site– both of which can cause inhomogeneity in the historic datasets. We are currently upgrading the observing infrastructure at all the State’s airports, this is a major project which has been in planning since 2013, civil works have just commenced, this will result in the relocation and modernisation of most of the observing infrastructure at these airports, including at Shannon. As regards Shannon the current enclosure has been in use since 2004, while some changes in the environment of the enclosure have occurred since then, we still regard the location as within WMO guidelines. The prevailing synoptic conditions during early July meant that the highest temperatures occurred in the west of the country.



Kind regards,
Andrew
I asked as a follow up question if there are any adjustments to the raw data to take account of changes to the site location or any changes to the environment and he said
Quote:
In relation to the raw data, there are standard qc processes but as I am not directly involved in that, I wouldn’t have all the details so I will request a response from the climate department and will forward it on to you when I get it.
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30-07-2018, 14:48   #18
Danno
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An aerial view of the Durrow climate station: (forgot to label the Manual Rain Gauge which is to the right of the Grass thermometer enclosure)




Countryside to the east:

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29-04-2021, 23:26   #19
Gaoth Laidir
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The Irish Aviation Authority have this Excel file of temperature data for all airports/airfields in the country, based on both actual data measurements (where available) and interpolated values.

Max and min refer to the average max and min of the warmest and coldest month, respectively, for the period 2015-2019. Casement's Min actually came in 0.1 lower than Dublin Airport (1.4 v 1.5 C).

Quote:
The temperatures are calculated as follows: For each of the past 5 years (2015-2019), for each location, the month with the lowest mean Max and Min was obtained and averaged. For locations with climate stations (Dublin, Shannon, Cork, Knock and Casement) the actual measurements were used, for other locations the temperatures were interpolated from 1km Max/Min temperature grids derived using all available observations for each month. Max and min temperature refer to the 0900 to 0900 period.
https://www.iaa.ie/commercial-aviati...onautical-data

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09-05-2021, 14:19   #20
Gaoth Laidir
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I've generated this chart of the distance pairs between the sensor enclosures of all the Met Éireann stations and regional airports (in km). It's not such a small island after all, with 455 km between the two most distant stations (Malin Head and Sherkin Island).

Most central station: Gurteen (average 131.2 km from other stations)
Most remote station: Malin Head (average 249.9 km from other stations)
Average station separation: 173.4 km

Closest stations:
1. Dublin Airport <-> Phoenix Park (7.3 km)
2. Casement <-> Phoenix Park (8.9 km)
3. Markree Castle <-> Sligo Airport (14.3 km)

Most distant stations:
1. Malin Head <-> Sherkin Island (455 km)
2. Malin Head <-> Valentia (427 km)
3. Donegal Airport <-> Sherkin Island (403 km)


Last edited by Gaoth Laidir; 10-05-2021 at 13:38.
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09-05-2021, 15:21   #21
axe2grind
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This page on the Met Eireann site has a map of their 82 temperature (Climate +Synoptic) stations as of 2017.

On their rainfall page they mention just under 500 gauges, but the map is the same 82 sites as the temperature one.
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10-05-2021, 11:57   #22
Jpmarn
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Quote:
Originally Posted by Gaoth Laidir View Post
I've generated this chart of the distance pairs between the sensor enclosures of all the Met Éireann stations and regional airports (in km). It's not such a small island after all, with 455 km between the two most distant stations (Malin Head and Sherkin Island).

Most central station: Gurteen (average 131.2 km from other stations)
Most remote station: Malin Head (average 249.9 km from other stations)
Average station separation: 173.4 km

Closest stations:
1. Dublin Airport <-> Phoenix Park (7.3 km)
2. Casement <-> Phoenix Park (8.9 km)
3. Markree Castle <-> Sligo Airport (14.3 km)

Most distant stations:
1. Malin Head <-> Sherkin Island (455 km)
2. Malin Head <-> Valentia (427 km)
3. Donegal Airport <-> Sherkin Island (403 km)

Some of the distances are confusing. From Shannon Airport it states 185 KM to Belmullet and 218 Km to Claremorris. From Claremorris it states it is 218km to both Roche’s Point and Shannon Airport. There maybe more errors on this table with regards to distances between weather stations.
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10-05-2021, 13:39   #23
Gaoth Laidir
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Quote:
Originally Posted by Jpmarn View Post
Some of the distances are confusing. From Shannon Airport it states 185 KM to Belmullet and 218 Km to Claremorris. From Claremorris it states it is 218km to both Roche’s Point and Shannon Airport. There maybe more errors on this table with regards to distances between weather stations.
Correct. It should have read 113 km Shannon <-> Claremorris. I've corrected the image above now.
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11-05-2021, 14:02   #24
Tyrone212
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Quote:
Originally Posted by Gaoth Laidir View Post
I've generated this chart of the distance pairs between the sensor enclosures of all the Met Éireann stations and regional airports (in km). It's not such a small island after all, with 455 km between the two most distant stations (Malin Head and Sherkin Island).
As the crow flies Malin head is closer to
John o' Groats than it is to Mizen head.
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