UKEAP: MARGA Network
What is the purpose of the network?
The Monitor for Aerosols and Gases in Ambient air (MARGA) network provides the regulatory requirement to characterise particulate matter at background locations. In addition to measuring the concentration of the major ions in the PM10 and PM2.5 size fractions, gaseous concentrations are also measured hourly. Measurements are made at Auchencorth Moss and Chilbolton. Both these sites are in rural background locations away from significant sources of air pollution. Measurements from the network allows detailed support source apportionment and allows us to understand better the role played by the long-range transport of air pollution in forming particulate matter in urban areas.
What is measured?
K+, Na+, NH4+, Ca2+, Mg2+, Cl–, NO3-, SO42-, SO2, HCl, HNO3, HONO, NH3
| Parameters Measured | Monitoring sites and data |
|---|---|
|
Nitric oxide Nitrogen dioxide calcium in PM10 chloride in PM10 potassium in PM10 magnesium in PM10 sodium in PM10 ammonium in PM10 nitrate in PM10 sulphate in PM10 calcium in PM2.5 chloride in PM2.5 potassium in PM2.5 magnesium in PM2.5 sodium in PM2.5 ammonium in PM2.5 nitrate in PM2.5 sulphate in PM2.5 gaseous hydrochloric acid gaseous nitrous acid gaseous nitric acid gaseous ammonia gaseous sulphur dioxide |
Current sites: 2 Total sites: 3 Data availability: 17/02/2009 to 30/09/2024 |