The Atmospheric Chemistry Studies in the Oceanic Environment (ACSOE) OXIdising Capacity of the Ocean Atmosphere (OXICOA) Eastern Atlantic Spring/Summer Experiment in 1996 (EASE-96) Centre for Atmospheric Science, University of Cambridge (CAS) Trajectory Model Data contains outputs of back trajectory model. The model used historic forecasts from European Centre for Medium-Range Weather Forecasts (ECMWF) to understand the origin and transportation of various atmospheric chemical species measured at he Mace Head Atmospheric Research Centre.

The North Atlantic Marine Boundary Layer Experiment (NAMBLEX) campaign was conducted at Mace Head in Ireland from 24 July 2002 to 3 September 2002. During this campaign a suite of instruments, including several from the Universities Facility for Atmospheric Measurements (UFAM). This dataset contains 21 back trajectories corresponding to arrival on all ECMWF model levels between the ground and mid-troposphere, including surface pressure, temperature, specific humidity, zonal and meridional wind speeds and height from the UK Universities Global Atmospheric Modelling Programme (UGAMP).