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   TodayFirst draft handbook, the over 50 volunteers that are working on the first International Handbook on the Assessment of Odour Exposure by using Dispersion Modelling reached their first milestone. The first draft of this handbook, was just released (only available for the volunteers) and it has, at this stage, 289 pages of information on the topic.

   The group has had already 20 monthly meetings since the very first meeting took place the 27th of August 2020. This development is being led by Ms. Jennifer Barclay, principal scientist of Atmospheric Science Global (ASG) in New Zealand and Dr. Günther Schauberger, professor of the University of Veterinary Medicine of Vienna, Austria.

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Gral gui222   The well known Graz Lagrangian particle model (GRAL) system developers, with a free Graphic User Interface (GUI) available in both Linux and Windows, have released the new GRAL and GUI version 22.03 with plenty of bug fixes and new features.

   According to developers, systematic refactoring will improve the prevention of such bugs in the future, as the readability and maintainability of the code has increased significantly.

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27 3   During the last years, there is a need to plan strategical investments to reduce Wastewater Treatment Plant (WWTP) odour impact, which it is generally carried out by covering and deodourizing the main process units involved.

   Odour dispersion modelling software combined to dynamic olfactometry is the standard technique conducted to evaluate the odour impact studies. However, the results obtained by this methodology strongly depend on the emission sources set in the software. Thus, this study is focused on providing a dynamic odour impact assessment using CALPUFF software simulations, calculated under different “what-if” scenarios, providing a new approach to define the calibration of the emission sources.

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