Impact of AIS Data Thinning on Ship Air Pollutant Emissions Inventories

This article examines the impact of automatic identification system (AIS) data thinning on ship emissions inventory results. AIS is theoretically proven to lead a smaller result for ship’s air pollutant inventory. The dynamic six sampled ships 1 day and year were thinned at min, 3 10 30 h time intervals, then CO2, NOX, CH, PM, SO2, other estimated both with without in different intervals. results show that affects ships, greater as interval increases. When less than 10%, but increases about 10–15% min 15–20% 60 interval. impacts acutely fluctuating speeds are more significant because constantly changing speed main reason why Therefore, these suggest can be intervals 5 or when establishing coastal national inventory, should inland river not recommended port smaller-scale