In Guidance Area 2, learners will understand key factors and processes involved in conducting emissions inventory and air quality modeling and identify priorities and appropriate measures to develop/improve emissions inventory processes and modeling. This module is divided into two sections: 1) Emissions Inventory – discusses what is emissions inventory and the information it can provide, differen...

The goal of this module is to itemize the process of creating source and emissions databases embedded within the EI development process. This aims to facilitate the streamlining of data collection processes at the city-level, to contribute to the development of more extensive inventory at a national or even regional level....

The availability of data, time, human, and financial resources will determine the type of EI methodology that can be adopted (NCCEH, 2011). Emissions inventory development can be challenging and tedious, hence it is important to adequately prepare especially in the assessment of data availability and planning for and executing the data collection process. This toolkit aims to guide air quality man...

The most effective means of communication and data presentation for emission inventory is through an attractive visual reference such as time trends and spatial distribution. Data visualization offers an approach that can help in making the numerical data more understandable and widereaching. There are numerous available data visualization programs and tools that are accessible online which can cr...

Emission factors (EF) are used for the calculation of emissions in compiling an inventory. It relates the quantity of emissions with the activity data of the emission source (EPA, 2017). This module compiled a curated list of references to aid users in determining appropriate EF values to use in inventory development. The focus of the document is to provide the user with an index of available and ...

This guidance area addresses the issues of developing an accurate and reliable emissions inventory (EI) which can be used as input to dispersion models in order to estimate exposure of human populations and the environment. Information from EIs are also important for understanding air pollution sources to draw up control measures to mitigate industrial, transport, and residential emissions and ach...

These revised guidelines assist Parties, through a common approach, in meeting their obligations under the Convention on Long-range Transboundary Air Pollution and its protocols. They support the evaluation of emission reduction strategies and facilitate the technical review of air pollutant emission inventories. They allow for the effective assessment of compliance with emission obligations under...

This working paper presents the description of the “Vehicular Air Pollution Information System” (VAPIS) tool. The VAPIS tool was developed to establish the emission trends and evaluate possible management scenarios for one vehicle category, using minimum inputs for the user. The tool can be replicated for multiple pollutants and multiple vehicle fleets, depending on the availability of the input d...

VAPIS tool, one of the integral parts of the SIM-air family of tools, is an user friendly spreadsheet based tool, designed to quickly analyze emission trends for a single vehicular category for a single pollutant. This tool allows the user to start with the basic information on vehicular numbers, growth rates, age splits, kilometers traveled per day, average retirement age, and emission factors, a...

A set of land use database and a biogenic emission inventory system specific to biogenic emissions from natural sources that need to be accounted for in photochemical grid models....