New updated emission inventories for ships in the Arctic based on satellite sampled AIS data

Emissions from ships inside Arctic are an important source of the Arctic pollution as e.g. SO2, NOx and Black Carbon (BC). In an earlier work, see Winther et al (2014), a first estimate of detailed emissions inventories for BC, NOx and SO2 was presented, where the emissions were estimated by using satellite sampled AIS data for one particular year 2012 combined with ship engine power functions and technology stratified emission factors. In this paper we will present an updated emission inventory for ships in the Arctic based on 5 years (2012-2016) satellite AIS data and with updated technology stratified emission factors. The year to year variability of the ship traffic results in an undefined uncertainty especially in the high Arctic by using only one particular year as in the old inventory, and thus, the using of several years of AIS data will give a more reliable and robust emissions estimate. Furthermore trends in the traffic can be identified, if they are significant. The updated technology stratified emission factors include new BC emissions factors as a function of fuel type. Acknowledgement. We highly acknowledge the Danish EPA with means from the MIKA/DANCEA funds References: Winther, M., Christensen, J. H., Plejdrup, M. S., Ravn, E. S., Eriksson, Ó. F., and Kristensen, H. O. (2014). Emission inventories for ships in the arctic based on satellite sampled AIS data. Atmospheric Environment, 91, 1-14