The team developing the high-resolution model system GRAMM/GRAL, inside the Institute of Thermodynamics and Sustainable Propulsion Systems at Graz University of Technology, has just released the new version 23.11.

   GRAL 23.11 has been compiled for .NET 8!
- The GRAL release is no longer published as an all-in-one file by default. This means that the user must install the .NET8 Runtime!
- For Windows users, a published version as a single-file is still available in a separate download!

   We are thrilled to announce the culmination of three years of dedicated work resulting in the world's first international handbook focused on the assessment of odour exposure through dispersion modelling. This initiative aimed to bridge a gap in existing guidelines for odour management and other guidelines related to dispersion modelling and now the first edition is available for download.

   The handbook tackles the intricacies of modelling odours, acknowledging the unique characteristics of odour incidents often perceived in seconds or minutes, thereby challenging traditional dispersion modelling modes. Emphasizing exposure is critical for accurately calculating the impact of odours on ambient air, particularly during calm or very low wind speeds when dispersion is constrained.

   The second draft of the international handbook on dispersion modelling is now available and open for comments. There are now 45 days to submit comments. Your comments are welcome if you are an expert in odour management or dispersion modelling. The due date to submit comments is 9 July 2023. The final version of the handbook is expected to be ready by September 2023.

   More than 50 experts worldwide signed up for this initiative in 2020. Currently, around 20 volunteers are actively involved in developing this document. Monthly meetings were held online on the last Thursday of each month at alternative times separated by 12 hours to have a more equitable distribution of time slots for volunteers from different time zones.

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