Defra - Department for Environment, Food and Rural Affairs.

Science Search

Science and Research Projects

Return to Science Search homepage   Return to Project List

Operation and Management of the EMEP Supersites & Acidifying Euthrophying Monitoring Sites - AQ0647

Description
The UK Eutrophying and Acidifying Atmospheric Pollutants (UKEAP) project consists of 4 rural air pollution monitoring networks and operation of two UK EMEP Supersites.
The 4 networks are;
- the Precipitation Network (Precip-Net) measuring rain composition at 38 sites across the UK,
-National Ammonia Monitoring Network (NAMN), measuring ammonia concentrations at 85 sites across the UK,
- the Acid Gas and Aerosol Network (AGANet), measuring acid gas concentrations and inorganic aerosol composition at 30 sites and
-the NO2-Net network, measuring indicative NO2 concentrations at 24 sites.

Precip-Net sites collect rainwater using standard bulk rainwater collectors to measure the deposition of both acidifying and eutrophying chemical species. Due to the long term time series from this network, it is possible to do trend analysis and modelling of chemical deposition via rainfall to UK ecosystems.

The NAMN sites monitor the monthly average air concentrations of gaseous ammonia (NH3) and particulate ammonium (NH4+) in order to quantify temporal and spatial changes on a long term basis. This monitoring provides a baseline for reduced nitrogen species which is necessary for examining responses to emissions changes in the agricultural sector and to verify compliance with targets set by international agreements. Data from the network are also used to test the performance of an atmospheric chemistry and transport models.

NO2-Net sites are a subset of the Precip-Net sites and are used to provide a rural background for the UK modelling of NO2. This supplements information delivered on a separate Defra network, the Automatic Urban and Rural Network.

AGANet uses a methodology based on denuders and filter packs (DELTA methodology) to sample gaseous HNO3, SO2, HCl and aerosol NO3-, SO42-, Cl-, plus base cations Na+, Ca2+ and Mg2+ at 30 sites across the UK. The objectives are to provide long-term monthly speciated measurements to provide temporal trends and spatial patterns and make the dataset available for comparison with outputs from dispersion and deposition models.

EMEP Supersites: The UNECE Convention on Long Range Transboundary Air Pollutants operates a number of measurement and monitoring programmes, including EMEP – the Co-operative Programme for Monitoring and Evaluation of the Long-range Transmission of Air Pollutants in Europe. The UK contribution to the EMEP monitoring strategy is two Level II ‘Supersites’, one in the north of the UK at Auchencorth Moss, Midlothian, and one in the south, at Harwell, Oxfordshire. CEH and AEA manage the Auchencorth Moss and Harwell sites respectively. At Harwell additional measurements are made to qualify as an EMEP Level III site. Data from these sites at hourly or daily frequency are supplemented by long-term integrating measurements from existing Defra-funded monitoring networks across the UK to ensure effective operation of equipment. Within this contract the Defra contribution to the EMEP Intensive experiments is coordinated.
Objective
1 Manage, maintain the network and analyse datasets from rural network to determine gaseous ammonia concentrations, monthly at 85 sites. (CEH)
2 Manage and maintain a rural network to determine concentrations of major ions in precipitation, fortnightly at 38 sites and daily at 2 sites. (AEA)
3 Manage, maintain the network and analyse datasets from rural network to determine concentrations of gaseous and particulate eutrophying and acidifying pollutants, monthly at 30 sites. (CEH)
4 Manage and maintain a rural network to determine nitrogen dioxide concentrations, 4-weekly at 24 UK sites (AEA)
5 Operate the Auchencorth monitoring instrument for AeRosols and reactive Gases (MARGA) to determine hourly trace gas and particle concentrations of PM10 and PM2.5, including data analysis (CEH)
6 Operate the Auchencorth ANNOX NO/NO2 analyser including data analysis (CEH)
7 This objective has been removed
8 Manage and maintain the Harwell monitoring instrument for AeRosols and reactive Gases (MARGA) to determine hourly trace gas and particle concentrations of PM10 and PM2.5, including data analysis (AEA)

9 Manage and maintain the Harwell ANNOX NO/NO2 analyser including data analysis (AEA)
10 This objective has been removed
11 Co-ordinate Defra’s EMEP reporting – including the collection of data from other Defra networks, data processing and producing an annual data submission for Auchencorth Moss (CEH)
12 Co-ordinate Defra’s EMEP reporting – including the collection of data from other Defra networks, data processing and ensuring an annual data submission for Harwell (AEA)
13 Produce a scientific summary of Auchencorth Moss and Harwell data annually (CEH)
14 Organise participation in the EMEP intensives campaigns, operate instruments and analyse data (CEH)
15 Organise participation in the EMEP intensives campaigns and offer support at Harwell Supersite (AEA)
16 One UKEAP team member to attend the biannual EMEP/TFMM meetings and provide summary reports to Defra. AEA and CEH to attend, on average, one each a year, depending on staff availability. (AEA/CEH)
17 Respond to changing circumstances and maintain UKEAP operations as per Defra requirements including covering (not exclusively): changing LSO costs, changing LSO, new site installation, site relocation, additional sampling and repair of “damage to equipment and infrastructure casued by human or natural activity, e.g. vandalism or high winds respectively change in Defra reporting requirements 1-39 (AEA/CEH)
18 Coordinate with the Defra Demonstration Test Catchments (DTC) project to install 2 ammonia monitoring sites as & when required To be agreed – see Option 11 above (CEH)
19 Report UKEAP data to UK Air and the deposition portal by the 1st of May each year and ensure that the data has been reported to EMEP annually by the 31st July, and make data available for other international databases when requested. (CEH/AEA)
20 Report progress on the project to Defra on a monthly and quarterly basis. Provide annual reports on the status of the UKEAP work including output, analysis and interpretation of data (CEH/AEA)
21 Enhance data dissemination links into the UK and international scientific community by responding to requests for UKEAP information, and, for CEH only, CEH co-funded research activities (CEH/AEA)
22 Ensure compliance with all H&S legislation and responsibilities for all activities carried out under this contract and keep records to document this. (CEH /AEA)
22 Obtain certificates of Electrical Testing of circuits for all sites where electricity is provided for site use from site owners or arrange separate testing (CEH)
23 Upload site risk assessments to the Defra H&S database when database is active (Sites split between AEA and CEH along with site visits). Update as per H&S Database schedule (CEH/AEA)
24 Upload and update PAT test dates annually for equipment tested at sites (Sites split between AEA and CEH along with site visits) (CEH/AEA)
Time-Scale and Cost
From: 2012

To: 2016

Cost: £3,514,202
Contractor / Funded Organisations
Ricardo-AEA Ltd, Centre For Ecology and Hydrology (CEH)
Keywords
Environmental Protection              
Fields of Study
Air Quality