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Remote sensing measurements of aerosol optical properties during the 2015 Indonesian biomass burning

Over the last two decades and due to rapid economic growth, the South-East Asia region experiences mild to severe smoke episodes generated from annual biomass burning events, usually occurring during the regions's dry season that can last several months (June to October). Such a events poses a hazard to the region itself and specially to Singapore due to close proximity to the land masses of Sumatra and Borneo. In-situ aerosol measurements are now performed by our AERONET link photometer (Singapore and Kuching) sites. Such measurements readily provide optical characterization of atmospheric aerosols when biomass burning events occur. In this work, we present an analysis of three months of AERONET level 1.5 data recorded during August-October 2015 period. Besides the classical aerosol optical depth and Angstrom exponent number classifications, a special emphasis is paid to separate the fine/coarse mode part of the particle size distribution and by applying strict constrains to avoid cloud contamination and other artifacts.