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The HILDAE project (HIgh Latitude Dust in a changing Arctic Environment) was focussed on supporting coordination and harmonization of activities in relation to HLD (High Latitude Dust) in the Arctic with the broad objective of contributing to define a more synergistic research strategy discussion within the scientific community. The high latitude dust (HLD), i.e. the mineral dust aerosols both transported or emitted by wind erosion processes in arid areas northern of 50°N, is an emerging and crucial component of the Arctic climate system with influences on the terrestrial, atmospheric, marine and cryosphere compartments. The role of HLD in the Arctic environment is expected to progressively increase in the next years and decades because of emissions increase in a warming climate due to both increase of natural sources (reduction of glaciers and ice/snow covered surfaces for a growing fraction of the year) and rising impact of anthropogenic activities (e.g., mining). How the HLD will impact the Arctic environment, how it will contribute to its regional climate changes and how it will affect global climate in the near future are key questions that the scientific community is required to address. Within this context, the HILDAE project brought together scientists with different disciplinary backgrounds, using complementary methodologies, and who have access to diverse data and platforms to develop a cutting–edge scientific reflection around the topic of HLD. The activity was centred on the organisation of an international workshop that was held at the LISA laboratory (Laboratoire Interuniversitaire des Systemes Atmospheriques) in Créteil, France, in autumn 2023. The meeting and the following discussions within the project allowed to strengthen the science basis in order to identify the main questions around the role of HLD in the Arctic climate system and develop strategies to respond to these questions. It permitted to establish connections and favour more coordinated reflection among an international community of scientists. As an outcome of the discussions the consortium started, thanks to the impulsion of the HILDAE meeting, a coordinated activity aimed at writing a review paper on the state of knowledge, the observational needs and perspectives in relation to the characterization of the HLD physico-chemical and climatically-relevant properties. This paper is intended to provide a solid scientific basis and guidance to the scientific community to develop investigations on the topic of high latitude dust. In conclusion, the HILDAE activity succeeded in creating an active consortium of scientists working together to bring a more coordinated view on the HLD topic, favouring scientific exchange and collaborations within a broad interdisciplinary scientific community. This allowed to put the basis for a more coordinated international scientific discussion concerning the methodological and scientific research needs around the question of high latitude dust.