Trends in Irish background air quality between 1981 - 2004 using Met Eireann data

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Resource or Project Abstract

This work describes the trends investigated for SO2-S(micrograms/m3,SO4-S (micrograms/m3)),and NO2-N (micrograms/m3) based on air samples collected on a daily basis at Valentia Observatory, Cahirciveen, Co. Kerry and analysed in the Met Éireann laboratory since 1981. Their trends have been observed using annual average values. The linear regression based trend line shows a significant reduction in SO2-S levels, approximately a decrease of 60% during the measurement period. Also a study has been performed to investigate if any correlation exists between the pollutant concentrations and wind direction.Wind data is gathered at Valentia Observatory on an hourly basis. This wind data was assigned wind direction as follows; N (340o - 20o), NE (30o - 60o), E (70o - 110o), SE (120o - 150o), S (160o - 200o), SW ( 210o - 240o), W (250o - 290o) and NW (300o - 330o). Wind sector analysis of the data showed that the highest concentrations for SO2-S were correlated with winds coming from the east, north east and south easterly directions.

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Contact Information for This Resource

Dr Wasim Bashir
School of Chemistry

Dr Brett Paull
Dublin City University

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Data, Files, Information Objects Related To This Project Resource

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Attachment Name and Download Link
Offline Print Quality Version    ERC_1_Bashir_SO4_prn.pdf  (0.19 Mb)
Att 2    Valentia_NO2-N.xls   (0.53 Mb)
Att 3    Valentia_SO4-S.xls   (0.68 Mb)
Att 4    Valentia_SO2-S1.xls   (0.66 Mb)

Suggested Citation Information

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Author(s)Bashir, W. Paull, B.
Title Of WebsiteSecure Archive For Environmental Research Data
Publication InformationTrends in Irish background air quality between 1981 - 2004 using Met Eireann data
Name of OrganisationEnvironmental Protection Agency Ireland
Electronic Address or URL
Unique Identifier90041a5c-2f4c-102a-b1da-b128b41032cc
Date of AccessLast Updated on SAFER: 2024-07-23

An example of this citation in proper usage:

Bashir, W. Paull, B.   "Trends in Irish background air quality between 1981 - 2004 using Met Eireann data". Associated datasets and digitial information objects connected to this resource are available at: Secure Archive For Environmental Research Data (SAFER) managed by Environmental Protection Agency Ireland (Last Accessed: 2024-07-23)


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Access Information For This Resource

SAFER-Data Display URL
Resource KeywordsSulphur dioxide
EPA/ERTDI/STRIVE Project CodeERC Fellowship Proje
EPA/ERTDI/STRIVE Project ThemeClimate Change
Resource Availability: Any User Can Download Files From This Resource
Limitations on the use of this ResourceYou should contact the originators and owners of the dataset if you wish to use this data.
Number of Attached Files (Publicly and Openly Available for Download): 4
Project Start Date Wednesday 14th January 2004 (14-01-2004)
Earliest Recorded Date within any attached datasets or digital objects Thursday 1st January 1981 (01-01-1981)
Most Recent Recorded Date within any attached datasets or digital objects Saturday 31st December 2005 (31-12-2005)
Published on SAFERThursday 29th March 2007 (29-03-2007)
Date of Last EditThursday 29th March 2007 at 15:02:42 (29-03-2007)
Datasets or Files Updated On Thursday 29th March 2007 at 15:02:42 (29-03-2007)

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Geographical and Spatial Information Related To This Resource

Description of Geographical Characteristics of This Project or Dataset
Valentia Observatory is part of Met Éireann, the Irish Meteorological Service. It is located one kilometre west of the town of Cahirciveen, on the estuary of the Feartha river. The Observatory carries out surface weather and upper-air meteorological measurements, as well as a wide range of other scientific activities including ozone monitoring, geomagnetics, seismology, solar radiation and environmental monitoring. The Observatory is called Valentia because it was originally located on Valentia Island. 51° 56' 23"N 10° 14'40"W 11M above mean sea level

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Supplementary Information About This Resource

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Lineage information about this project or dataset
Derived from Met Eireann Sampling at various locations from 1981
Supplementary Information
Sulphur dioxide reported as SO2-S in units of (micrograms/m3)
Sulphate reported as SO4-S in units of (micrograms/m3)
Nitrogen dioxide reported as NO2-N in units of (micrograms/m3)
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