Title: DeltaSA tool for source apportionment benchmarking, description and sensitivity analysis
Authors: PERNIGOTTI DENISEBELIS CLAUDIO
Citation: ATMOSPHERIC ENVIRONMENT vol. 180 p. 138-148
Publisher: PERGAMON-ELSEVIER SCIENCE LTD
Publication Year: 2018
JRC N°: JRC107657
ISSN: 1352-2310
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC107657
DOI: 10.1016/j.atmosenv.2018.02.046
Type: Articles in periodicals and books
Abstract: DeltaSA is an R-package and a Java on-line tool developed at the EC-Joint Research Centre to assist and benchmark source apportionment applications. Its key functionalities support two critical tasks in this kind of studies: the assignment of a factor to a source in factor analytical models (source identification) and the model performance evaluation. The source identification is based on the similarity between a given factor and source chemical profiles from public databases. The model performance evaluation is based on statistical indicators used to compare model output with reference values generated in intercomparison exercises. The references values are calculated as the ensemble average of the results reported by participants that have passed a set of testing criteria based on chemical profiles and time series similarity. In this study, a sensitivity analysis of the model performance criteria is accomplished using the results of a synthetic dataset where “a priori” references are available. The consensus modulated standard deviation punc gives the best choice for the model performance evaluation when a conservative approach is adopted.
JRC Directorate:Energy, Transport and Climate

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