{"id":510,"date":"2024-11-09T11:00:26","date_gmt":"2024-11-09T10:00:26","guid":{"rendered":"https:\/\/www.terraria.com\/casi-studio\/life-remy\/"},"modified":"2026-04-08T11:50:48","modified_gmt":"2026-04-08T09:50:48","slug":"life-remy-modelling-uncertainty","status":"publish","type":"casi-studio","link":"https:\/\/www.terraria.com\/en\/case-studies\/life-remy-modelling-uncertainty\/","title":{"rendered":"LIFE-REMY"},"content":{"rendered":"

Air quality: Reducing Emission Modelling uncertainty<\/h2>\n

The REMY<\/strong> project (acronym for Reducing Emission Modelling UncertaintY<\/strong>) is framed within the context of European air quality legislation<\/strong> (Ambient Air Quality Directives), which requires Member States to assess and manage air quality<\/strong> through advanced tools<\/strong>, including environmental modelling. These models are essential for evaluating the measures to be applied within a given territorial context.<\/p>\n

Their reliability strongly depends on the ability to accurately represent the spatial and temporal variability of pollutants<\/strong>. In this context, uncertainties<\/strong> related to model formulation, meteorological conditions, spatial resolution, and especially emission inventories<\/strong> represent a critical factor.<\/p>\n

In particular, a significant share of the overall uncertainty<\/strong> derives from the quality of emission data<\/strong>, including inventory compilation methods<\/strong> (top-down and bottom-up), the emission factors<\/strong> used, the chemical speciation<\/strong> of pollutants, and the representation of temporal variability<\/strong> in anthropogenic activities.<\/p>\n

REMY addresses these challenges through a detailed quantitative analysis<\/strong> based on modelling<\/strong> and simulations<\/strong> conducted both at the regional level<\/strong> in three critical European areas (Po Valley \u2013 IT<\/strong>, Catalonia \u2013 ES<\/strong>, Southern Poland \u2013 PL<\/strong>) and at the urban level<\/strong> in the cities of Milan, Barcelona, and Krakow.<\/p>\n

The main objective<\/strong> of the project is to provide updated, comprehensive, and harmonised recommendations<\/strong> to support modelling groups in reducing modelling uncertainties<\/strong>, thereby contributing to improved development, implementation, and analysis of air quality assessment, air quality plans, and source apportionment<\/strong> within the framework of the Ambient Air Quality Directives.<\/p>\n

Through dedicated simulations in the three EU contexts, the project assessed the impact of uncertainties<\/strong> in emission inventories<\/strong> and air dispersion models<\/strong> that may negatively affect air quality planning, both at regional and local scales, potentially leading to the identification of ineffective emission reduction strategies.<\/p>\n

To this end, the project combines different modelling approaches, including chemistry transport models (CTM) such as CAMx, urban modelling such as UTAQ<\/a>, and source apportionment techniques, to provide an integrated analysis of the main emission sources and their effects.<\/p>\n

Within the project, a web tool<\/strong><\/a> was also developed to facilitate access to and use of emission inventories. Among its main features, the tool allows users to download high-resolution emission datasets at the European scale, as well as to upload and integrate user-specific emission data.<\/p>\n

The data made available through the portal are based on the EMEP emission inventory (years 2017 and 2019) at three resolutions (0.025\u00b0, 0.01\u00b0, 0.005\u00b0), covering major air pollutants such as BaP, PM10, PM2.5, NOX<\/sub>, NVOC, SOX<\/sub>, and NH3<\/sub>.<\/p>\n

 <\/p>\n\n\n\n
Project type<\/strong>:\u202fLIFE Preparatory Project, Grant Agreement n. LIFE20 PRE\/IT\/000004, European Union<\/span>
\nBudget<\/strong>:\u202f1\u2019538\u2019414 Euro (923\u2019048 Euro EU-funded), 432\u2019922 Euro managed by TerrAria<\/span>
\nDuration<\/strong>:\u202f2021 \u2013 2024<\/span>
\nNumber and Partners involved<\/strong>:\u202f5 project partners: TerrAria Srl (TA), Agenzia Mobilit\u00e0 Ambiente e Territorio Srl (AMAT), Consejo Superior de Investigaciones Cient\u00edficas (CSIC), Institute of Environmental Engineering- National Research Institute (IEP-NRI), Ricerca Sistema Energetico (RSE)<\/span>
\n<\/span><\/b>Role<\/strong>:\u202f<\/span>Coordinating beneficiary
\nProject website<\/strong>:\u202f<\/span>liferemy.eu<\/span><\/a>\u00a0<\/span><\/td>\n		\"\"<\/a><\/b><\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The project focused on reducing the most relevant modelling uncertainties<\/strong> related to emission processing, with the aim of providing operational guidelines concerning:<\/p>\n