![](\"https:\/\/www.atm.helsinki.fi\/peex\/wp-content\/uploads\/2021\/03\/photo_peex-ses-egu2022.jpg\" "\\"photo_peex-ses-egu2022\\"")
<\/span><\/div>The PEEX session on \u201cObservation, Modelling and Assessment in the Arctic-Boreal Domain\u201d at the EGU-2022 General Assembly (https:\/\/www.egu22.eu<\/a>; 23-27 May 2022; Vienna, Austria) took place in a combined mode (onsite\/online) on 25 May 2022. The session was co-organized with the Digital Belt and Road Program (DBAR). In total 57 different participants from different Universities and research organizations attended the session.<\/p>\n The PEEX session aimed to bring together researchers interested in (i) understanding environmental changes effecting in pristine and industrialized Pan-Eurasian environments (system understanding); (ii) determining relevant environmental, climatic, and other processes in Arctic-boreal regions (process understanding); (iii) the further development of the long-term, continuous and comprehensive ground-based, air\/seaborne research infrastructures together with satellite data (observation component); (iv) to develop new datasets and archives of the continuous, comprehensive data flows in a joint manner (data component); (v) to implement validated and harmonized data products in models of appropriate spatio-temporal scales and topical focus (modeling component); (vi) to evaluate impact on society though assessment, scenarios, services, innovations and new technologies (society component).<\/p>\n A series of oral talks was delivered and discussed. These included presentations about AASCO & iCUPE projects results \u2013 Arena for gap analysis of the existing Arctic science co-operations & integrative and comprehensive understanding on polar environments, assessing impact of observation networks and data mobility for their impacts on socio-economical activities in the Arctic; presentations on analysing the changes in net sulphur dioxide uptake, photosynthesis, and ecosystem respiration and their relationships with climate and snow characteristics in central Siberia; on evaluating the methane emissions in high northern latitudes by using inverse modelling; on linking the measurement data of the substance flows of the SMEAR Estonia measuring station with the place of growth; on disentangling the methane and other trace gases sources and transport across the Russian Arctic from aircraft measurements; on analysing the geochemical processes in Yamal peninsula lakes under climate variation; on seamless modelling\u2013 examples of research, development and applications for environmental studies and assessment the influence of aerosol feedbacks on a regional scale as a result of accidental wildfires and land cover changes; on climate-oriented training in field of climate services, climate change adaptation and mitigation; on application of new approaches in teaching Earth sciences; and others, followed by short questions and discussions.<\/p>\n See more details (materials of presentations) at:\u00a0https:\/\/meetingorganizer.copernicus.org\/EGU22\/session\/43890<\/a><\/p>\n Text by: Hanna Lappalainen, Markku Kulmala, Alexander Mahura (University of Helsinki) & Alexander Baklanov (World Meteorological Organization)<\/em><\/p>\n