Aircraft Measurement of Chemical Processing and Export fluxes of Pollutants over the UK (AMPEP) was part of the NERC Polluted Troposphere Research Programme project (Round 1 - NER/T/S/2002/00152 - Duration 2002 - 2005) and was led by Prof. D Fowler, NERC Centre for Ecology and Hydrology.

This project was focussed on direct measurement of the atmospheric mass budget of a range of pollutants in the gas and aerosol phase in the boundary layer over the UK. New, state of the art equipment was applied to measure the atmospheric mass budget and, in particular, the net export from the downwind coast over the UK. For the majority of the pollutants this is the dominant term and its measurement provides a very powerful test of current understanding of the processes and the current generation of long range transport models. The approach was applied to sulphur compounds, oxidized and reduced nitrogen, ozone and related photochemical oxidant precursors, mercury, a range of heavy metals and the main radiatively active gases. The analysis and interpretation of the data was completed using a range of current long range transport, transformation and deposition models.

AMPEP was an aircraft measurement campaign using the FAAM BAe-146-301 and the flights were scheduled to take place between March and September 2005. Flights took place between 21 Apr 2005 and 19 September 2006.

The datasets include data from:
- the core FAAM instruments.
- non-core instruments fitted for the campaign including the UMIST aerosol mass spectrometer, gas analysers, aerosol filters, particle counters and a tunable diode laser, which measured a broad range of atmospheric trace species and aerosols.