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Finnish Meteorological Institute produces aerosol research study for India

Posted 6th May 2023

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A study conducted by the University of Eastern Finland and Finnish Meteorological Institute assessed the impacts of future aerosol emission reductions over the Indian subcontinent. During the research project, a machine-learning method was developed for correcting global model-based fine particulate matter estimates.

The aim of the study was to analyze the effects of aerosol emission mitigation on both regional radiative forcing and city-level air quality with a global-scale climate model, with special focus on India and the surrounding area. However, global-scale models do not necessarily provide accurate enough estimates for city-level air quality. In order to tackle this issue, a machine learning downscaling method was developed. The method combined global model data and ground station measured fine particulate matter concentration data from New Delhi. The results indicated that future aerosol mitigation could result in both improved city-level air quality and less radiative heating for India. 

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