Estimating vehicular emissions with the R package VEIN
This book is about the process for estimating vehicular emissions. This process is complex and can be dificult. It is required a big amount of information related to traffic, emissions factors and then process the outpus for the desired purpose. In this book this process is addressed with the VEIN (S. Ibarra-Espinosa et al. 2018) model, which is an R package available at https://CRAN.R-project.org/package=vein}.
I wrote this book to provide instructions to all possible users who want to Estimate vehicular emissions using VEIN. VEIN provides several functions which are related to each other reading different traffic sources and emission factor for various pollutants. However, incorporating all the features with input/output (I/O) process can be complicated. Moreover, communicating the recommended practices and instructions to an increasingly broader audience can be more difficult. Therefore, the purpose of this book is to reach the maximum amount of interested people easily. The language chosen is English because it is the global language. The model VEIN can be used as a tool for environmental planning. I hope you like this book.
The Chapter 1 covers the introduction to this book including installing R packages and dependent libraries to several operative systems. Chapter 2 covers basics commands using R. Chapter 3 presents the function inventory to produce a structure of directories and scripts for running vein. Chapter 4 covers the required traffic data for inputting into VEIN including different types and sources of information. Chapter 5 includes the emission factors that are included in the package and also, examples for inputting and creating new emission factors. Chapter 6 presents the estimations functions and tips. Chapter 7 includes the functions to do post-estimations to generate emission databases and also emissions at each street. Chapter 8 has functions to speciate pollutants. Chapter 9 instructions about how to generate inputs for air quality models. Finally, chapter 10 covers some aspects of quality check and avoiding errors.
Ibarra-Espinosa, S., R. Ynoue, S. O’Sullivan, E. Pebesma, M. D. F. Andrade, and M. Osses. 2017. “VEIN V0.2.2: An R Package for Bottom-up Vehicular Emissions Inventories.” Geoscientific Model Development Discussions 2017: 1–29. doi:10.5194/gmd-2017-193.2018. “VEIN V0.2.2: An R Package for Bottom–up Vehicular Emissions Inventories.” Geoscientific Model Development 11 (6): 2209–29. doi:10.5194/gmd-11-2209-2018.