Potential source density function (PSDF) is developed to identify, that is, locate and quantify, source areas of ambient trace species based on Gaussian process regression (GPR), a machinelearning technique. The PSDF model requires backward trajectories and sampling data at a receptor site in the calculation as in the conventional model to locate source areas of ambient trace species, such as the...

SPECIEUROPE is a repository of source profiles developed by the JRC in the framework of FAIRMODE WG3. The target users are source apportionment and emission experts working on the identification of atmospheric pollution sources in urban or background areas in Europe. In order maximize the compatibility with existing systems, the encoding of species in SPECIEUROPE is coherent with the one of the we...

SPECIATE is the EPA's repository of organic gas and particulate matter (PM) speciation profiles of air pollution sources. Among the many uses of speciation data, these emission source profiles are used to: create speciated emissions inventories for regional haze, PM, greenhouse gas (GHG), and photochemical air quality modeling; estimate hazardous air pollutant (HAP) emissions from PM and organic g...

In this module, the basic principles and considerations in performing an air quality modeling is discussed, to guide the reader in understanding its advantages in air quality management. Further, it can help in making the necessary preparations for running an air quality model. Modeling is a method to give a representation of reality that is often difficult to understand. Models help in simplifyin...

In this toolkit, description of some of the most common air quality models are discussed. This will help the reader become more familiar with the features of different air quality modeling tools which will best fit the available resources and AQM objectives of the city. Time, effort, and cost can go down if proper models are used and implemented by experts in the field. Ultimately, the validated o...

In this module, guidance is provided to help the reader review model reports and results. The operational guidelines can help assess aspects of air dispersion modeling that must be considered throughout the process. This will better inform the air quality manager to see if additional steps must be taken, or to sign off the whole air quality modeling process to be fit for policy development (refer ...

SIM-air family of tools “Simple Interactive Models for better air quality” were developed with one objective – make use of the best available information on all the known sources of air pollution to support integrated air quality management. A demo version of a reduced-complexity integrated air pollution analysis tool is available, to go from estimating emissions to pollution to impacts for a set ...

This self-paced tutorial demonstrates how to map air quality data using ArcView GIS software (available free to tribes via the Bureau of Indian Affairs). The tutorial takes a "by doing" approach. Step-by-step exercises are provided in which participants are guided through the skills needed. Participants are directed to different sources of available data for interpretation purposes. There are seve...

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 simi...

DeltaSA is an on-line tool to assess source apportionment model outputs in line with the CEN Technical Specification 17458:2020. It works in two different modes. The first is the source chemical profiles similarity test (CPS) accomplished by comparing those obtained by the user with more than one thousand PM10/PM2.5 source measured chemical profiles from the online SPECIATE (US-EPA) and SPECIEUROP...