... forecastingpoint) of a forecasted pollutant, given an input vectorcontaining earlier air quality measurements at T+0 hand weather observations at T+24 h (simulating a weather forecast). In the training ... imputation of missing values in air quality data sets. Atmospheric Environment, accepted for publication.Karppinen, A. , Joffre, S., Vaajama, P., 1997. Boundary layerparametrization for Finnish regulatory ... particu-larly reducing the need of computational efforts by eliminating irrelevant inputs. In the case of air qualityforecasting this can also imply smaller costs due to thesmaller amount of measurements...