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. (Dataset). https://doi.org/10.5285/7d380209-9df4-4686-b7ad-de39cca19cce
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This dataset is available under the terms of the Open Government Licence
Monthly atmospheric ammonia gas concentration data from Northern Ireland ALPHA® Ammonia Monitoring Network, 2019-2020
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.
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
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.
Related
Related datasets
Ammonia measurements from passive samplers at Ballynahone Bog field site, Northern Ireland
This dataset is included in the following collections
Supplemental information
Correspondence/contact details
Penicuik
Midlothian
EH26 0QB
UNITED KINGDOM
Authors
Other contacts
- Rights holders
-
UK Centre for Ecology & Hydrology, Agri-Food and Biosciences Institute (AFBI)
- Custodian
-
NERC EDS Environmental Information Data Centreinfo@eidc.ac.uk
- Publisher
-
NERC EDS Environmental Information Data Centreinfo@eidc.ac.uk
Additional metadata
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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
CITE 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