Monthly atmospheric ammonia gas concentration data from Northern Ireland ALPHA® Ammonia Monitoring Network, 2019-2020

Download data Supporting docs Cite this dataset

PLEASE NOTE:

By accessing or using this dataset, you agree to the terms of the relevant licence agreement(s). You will ensure that this dataset is cited in any publication that describes research in which the data have been used.

This dataset is available under the terms of the Open Government Licence

Download the data

https://doi.org/10.5285/7d380209-9df4-4686-b7ad-de39cca19cce

This dataset is from the Northern Ireland (NI) ALPHA® Ammonia Monitoring network, and consists of monthly concentrations of atmospheric ammonia (NH3) gas measured with the UKCEH ALPHA® method at 25 sites across NI for the years 2019 to 2020.

NH3 data were also collected with a monthly measurement frequency with the UKCEH DELTA® method at a further 4 sites, as part of the NI DELTA® Gas and Aerosol Monitoring Network. At one site, ALPHA® and DELTA® methods were co-located to inter-compare NH3 concentrations. Monthly NH3 data (2019 – 2020) from the NI DELTA® network are reported separately in a companion submission.

The network is operated jointly by Agri-Food and Biosciences Institute (AFBI) and the UK Centre for Ecology & Hydrology (UKCEH), and funded by the Department of Agriculture, Environment and Rural Affairs (DAERA), Northern Ireland.

Publication date: 2022-03-28

40 downloads *

1,129 views *

More information

View numbers valid from 01 June 2023 Download numbers valid from 20 June 2024 (information prior to this was not collected)

Format

Comma-separated values (CSV)

Spatial information

Study area

Spatial representation type

Tabular (text)

Spatial reference system

WGS 84

Temporal information

Temporal extent

2019-01-01 to 2020-01-01

Provenance & quality

ALPHA® samplers were prepared and analysed by the UKAS accredited UKCEH Lancaster Laboratory, following protocols and procedures in manuals and Standard Operating Procedures (SOPs) developed and adopted in the UK National Ammonia Monitoring Network (NAMN), operated also by UKCEH.

Measurement frequency was monthly, with monthly site visits (± 5 days of the 1st of each calendar month) by a network of trained local site operators to exchange samples.

Sample exposure information (manual transcription from site recording sheets) and raw chemistry data files from analysed air samples (csv files) are stored, combined and processed in an oracle-based database (AAGA) to calculate and output calculated NH3 concentrations via a ShinyApp.

Output files are in a standardised reporting template, with data quality flags (based on flags defined in ebas; https://projects.nilu.no/ccc/flags/). Each output file generated are time-stamped, with versioning control.
An annual field calibrated ALPHA® uptake rate from the UK National Ammonia Monitoring Network project (https://uk-air.defra.gov.uk/networks/network-info?view=nh3) was applied to the ALPHA® data for the corresponding calendar year.

Ratified data were generated following a multi-stage, iterative review process, with both automatic and manual data checks, in accordance with procedures in the AAGA data processing system and data review SOPs.

Licensing and constraints

This dataset is available under the terms of the Open Government Licence

Cite this dataset as:

Tang, Y.S.; Tomlinson, S.J.; Carnell, E.J.; Williams, M.; Simmons, I.; Twigg, M.; Stephens, A.C.M.; Iwanicka, A.; Leaver, D.; Braban, C.F.; Mcllroy, J.; Pereira, M.G.; Keenan, P.O.; Tanna, B.; Thacker, S.; Salisbury, E.; Hunt, A.; Guyatt, H.; Smith, H.; Graham, C.; Dragosits, U. (2022). Monthly atmospheric ammonia gas concentration data from Northern Ireland ALPHA® Ammonia Monitoring Network, 2019-2020. NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/7d380209-9df4-4686-b7ad-de39cca19cce

BibTeX RIS

This dataset is included in the following collections

Northern Ireland ALPHA® and DELTA® monitoring networks

Supplemental information

UKEAP National Ammonia Monitoring Network – atmospheric ammonia gas and ammonium aerosol data (since 1996)

UKEAP National Ammonia Monitoring Network (NAMN)

Information on the ALPHA® and DELTA® NH3 monitoring protocols from the national network, and on annual ALPHA® field calibrated uptake rates, which were applied in the Northern Ireland NH3 network.