University of manchester University of Oxford University of Leeds
National Centre for Atmospheric Science Natural Environment Research Council


The Global Aerosol Synthesis and Science Project (GASSP) is a research project to improve our understanding of global aerosol effects on climate.

The aim of GASSP is to reduce the uncertainty in the effect of aerosols on climate as much as possible based on present observing systems and models. This will be achieved by using a very large global dataset of aerosol measurements to evaluate and calibrate a global aerosol model.

GASSP is a collaboration of global atmospheric modellers in the UK and several international aerosol measurement scientists.

The fundamental premise of GASSP is that only a small fraction of the community’s enormous investment in atmospheric aerosol measurements is ultimately used to test and improve models. There is huge potential to improve our understanding of global aerosol and climate by bringing together data in a model synthesis effort.