1、Cadfluid SolutionsUniversitat Rovira i VirgiliAv.Pasos Catalans 26,43007,Tarragona,SpainTarragona,November 2022PROJECT STAGE 2:MODELING AND ANALYSIS OF THE IMPACT OF CRUISESHIP TRAFFIC ON AIR QUALITY IN THEMETROPOLITAN AREA OF THE CITY OF PALMA,SPAIN.EXECUTIVE SUMMARYUnder commission by the Cruise L

2、ine International Association(CLIA),the authors of thisreport have used a novel methodology based on Machine Learning(ML)techniques toestimate the contribution of the cruise sector on the air quality of the city of Palma(BalearicIslands,Spain).In contrast to classical approaches that require detaile

3、d inventories ofpollutant emissions and data on the local atmospheric conditions,the ML approach greatlyalleviates these constraints while keeping comparable accuracy levels to those exhibited bystate-of-the-art dispersion models.By ingesting high temporal resolution massive datasetson pollutant con

4、centration,meteorological conditions and transportation intensity,thepresent ML methodology have demonstrated to be capable of elucidating the relationbetween the local pollutant concentration and the variables it depends upon.In this report,we present and discuss the results obtained for the tailor

5、ed ML model for the city of Palma.Each cruise ship with the typical characteristics of those docked in the port of Palma isfound to contribute with an increase of 1.3 and 0.4 of g/m3in nitrogen dioxide(NO2)in themost centric locations of Foners and Sant Joan de Du.As we move away from the citycenter

6、,these values decrease to 0.4 and 0.1 g/m3at the stations of Parc Bit and Bellver.Regarding particulate matter(PM10),each typical cruise vessel is estimated to contribute0.3,0.4 and 0.1 g/m3at Foners,Sant Joan de Du and Bellver,as well as 0.1 g/m3in theconcentration of sulfur dioxide(SO2)at Foners.W