The ACES (Aerosol Coupling in the Earth System) project was an integrated research programme that aims to reduce uncertainties in our fundamental understanding of the formation of BSOA (Biogenic Secondary Organic Aerosol) and the subsequent impact on atmospheric composition, through coordinated chamber studies, field studies, process model development, and application of atmospheric models of chemistry and transport to assess coupling and feedbacks in the Earth system.

As part of the APPRAISE-ACES project, the University of Manchester carried out several field measurements studies in the rainforest in Borneo (based at the forest in-canopy site located at the FACE (Forests Absorbing CO2 Emissions) nursery at the Sabahmas Estate oil plantation in Malaysia) and also aerosol chamber studies which followed in Manchester.

This dataset collection contains measurements from aerosol instruments used in Borneo including Condensation Particle Counter (CPC), Grimm Optical Particle Counter (Grimm), Scanning Mobility Particle Sizer (SMPS) and a Sonic Anemometer 1.

The ACES field measurement programme was designed to develop the objectives of the Oxidant and Particle Photochemical Processes above a South-East Asian Tropical Rain Forest (OP3-Danum-08) project.