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Central Arctic properties and processes are important to the regional and global coupled climate system. The Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) Distributed Network (DN) of autonomous ice-tethered systems aimed to bridge gaps in our understanding of temporal and spatial scales, in particular with respect to the resolution of Earth system models. By characterizing variability around local measurements made at a Central Observatory, the DN covers both the coupled system interactions involving the ocean-ice-atmosphere interfaces as well as three-dimensional processes in the ocean, sea ice, and atmosphere. The more than 200 autonomous instruments (“buoys”) were of varying complexity and set up at different sites mostly within 50 km of the Central Observatory. During an exemplary midwinter month, the DN observations captured the spatial variability of atmospheric processes on sub-monthly time scales, but less so for monthly means. They show significant variability in snow depth and ice thickness, and provide a temporally and spatially resolved characterization of ice motion and deformation, showing coherency at the DN scale but less at smaller spatial scales. Ocean data show the background gradient across the DN as well as spatially dependent time variability due to local mixed layer sub-mesoscale and mesoscale processes, influenced by a variable ice cover. The second case (May–June 2020) illustrates the utility of the DN during the absence of manually obtained data by providing continuity of physical and biological observations during this key transitional period. We show examples of synergies between the extensive MOSAiC remote sensing observations and numerical modeling, such as estimating the skill of ice drift forecasts and evaluating coupled system modeling. The MOSAiC DN has been proven to enable analysis of local to mesoscale processes in the coupled atmosphere-ice-ocean system and has the potential to improve m

Data from the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition allowed us to investigate the temporal dynamics of snowfall, snow accumulation and erosion in great detail for almost the whole accumulation season (November 2019 to May 2020). We computed cumulative snow water equivalent (SWE) over the sea ice based on snow depth and density retrievals from a SnowMicroPen and approximately weekly measured snow depths along fixed transect paths. We used the derived SWE from the snow cover to compare with precipitation sensors installed during MOSAiC. The data were also compared with ERA5 reanalysis snowfall rates for the drift track. We found an accumulated snow mass of 38 m SWE between the end of October 2019 and end of April 2020. The initial SWE over first-year ice relative to second-year ice increased from 50 % to 90 % by end of the investigation period. Further, we found that the Vaisala Present Weather Detector 22, an optical precipitation sensor, and installed on a railing on the top deck of research vessel Polarstern, was least affected by blowing snow and showed good agreements with SWE retrievals along the transect. On the contrary, the OTT Pluvio2 pluviometer and the OTT Parsivel2 laser disdrometer were largely affected by wind and blowing snow, leading to too high measured precipitation rates. These are largely reduced when eliminating drifting snow periods in the comparison. ERA5 reveals good timing of the snowfall events and good agreement with ground measurements with an overestimation tendency. Retrieved snowfall from the ship-based Ka-band ARM zenith radar shows good agreements with SWE of the snow cover and differences comparable to those of ERA5. Based on the results, we suggest the Ka-band radar-derived snowfall as an upper limit and the present weather detector on RV Polarstern as a lower limit of a cumulative snowfall range. Based on these findings, we suggest a cumulative snowfall of 72 to 107 m and a preci

The original version of this Article contained an error in Fig. 4, in which the y-axis should read “INPs (L−1 of air)” instead of “INPs x 10−3 (L−1 of air)”. This has been corrected in both the PDF and HTML versions of the Article.

Data from the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition allowed us to investigate the temporal dynamics of snowfall, snow accumulation and erosion in great detail for almost the whole accumulation season (November 2019 to May 2020). We computed cumulative snow water equivalent (SWE) over the sea ice based on snow depth and density retrievals from a SnowMicroPen and approximately weekly measured snow depths along fixed transect paths. We used the derived SWE from the snow cover to compare with precipitation sensors installed during MOSAiC. The data were also compared with ERA5 reanalysis snowfall rates for the drift track. We found an accumulated snow mass of 38 mm SWE between the end of October 2019 and end of April 2020. The initial SWE over first-year ice relative to second-year ice increased from 50 % to 90 % by end of the investigation period. Further, we found that the Vaisala Present Weather Detector 22, an optical precipitation sensor, and installed on a railing on the top deck of research vessel Polarstern, was least affected by blowing snow and showed good agreements with SWE retrievals along the transect. On the contrary, the OTT Pluvio2 pluviometer and the OTT Parsivel2 laser disdrometer were largely affected by wind and blowing snow, leading to too high measured precipitation rates. These are largely reduced when eliminating drifting snow periods in the comparison. ERA5 reveals good timing of the snowfall events and good agreement with ground measurements with an overestimation tendency. Retrieved snowfall from the ship-based Ka-band ARM zenith radar shows good agreements with SWE of the snow cover and differences comparable to those of ERA5. Based on the results, we suggest the Ka-band radar-derived snowfall as an upper limit and the present weather detector on RV Polarstern as a lower limit of a cumulative snowfall range. Based on these findings, we suggest a cumulative snowfall of 72 to 107 mm and a pre

The Arctic is warming faster than anywhere else on Earth, prompting glacial melt, permafrost thaw, and sea ice decline. These severe consequences induce feedbacks that contribute to amplified warming, affecting weather and climate globally. Aerosols and clouds play a critical role in regulating radiation reaching the Arctic surface. However, the magnitude of their effects is not adequately quantified, especially in the central Arctic where they impact the energy balance over the sea ice. Specifically, aerosols called ice nucleating particles (INPs) remain understudied yet are necessary for cloud ice production and subsequent changes in cloud lifetime, radiative effects, and precipitation. Here, we report observations of INPs in the central Arctic over a full year, spanning the entire sea ice growth and decline cycle. Further, these observations are size-resolved, affording valuable information on INP sources. Our results reveal a strong seasonality of INPs, with lower concentrations in the winter and spring controlled by transport from lower latitudes, to enhanced concentrations of INPs during the summer melt, likely from marine biological production in local open waters. This comprehensive characterization of INPs will ultimately help inform cloud parameterizations in models of all scales.

Various researchers have pointed out that avoiding further catastrophicconsequences related to the deteriorating ecological state of the planet,brought about by unsustainable production and consumption patterns,requires not only technological innovation and efficiency in productionprocesses, but also absolute reductions in energy and material use (i.e.,sufficiency). The rapid expansion of research on ideas such as sufficiency andpost-growth indicate an increasing realization that fundamental societalchange is needed if we are to avoid devastating environmental effects andsocial inequities.Using a theoretical perspective consisting of the literature on sustainableconsumption, sufficiency politics and policies, and scaling sustainabilityinitiatives, this thesis aims to contribute to our knowledge about socialecologicaltransformations from the perspective of sufficiency, specificallyaddressing (un)sustainable consumption. Sweden serves as the case with, onthe one hand, its strong civil society, policy and business promotion ofsustainable development and, on the other, high per-capita levels ofunsustainable consumption of resources.This thesis comprises four separate articles and a cover essay. Article oneexplores how environmental non-governmental organizations (ENGOs) areframing different sufficiency activities—ranging from those that can beapplied within the current market arrangements to others that deal withsocial relations and non-commercial values beyond market exchange—as away to attract a wider audience. Article two analyses the individual motivesfor working less and the socio-ecological outcomes of Gothenburg City’s ‘rightto part-time’ policy. The third article contrasts the visions and discourses of‘community repair’ with the mainstream circular economy discourse byanalyzing the ENGO campaign ‘Fix the Stuff’ and the open Do-It-Yourselfrepair spaces ‘Fixotek’ in the City of Gothenburg. Article four explores howdifferent business forms impact upon the social an, Flertalet forskare framhåller att om vi ska undvika ytterligare katastrofalakonsekvenser relaterade till miljöns tillstånd, orsakade av ohållbarakonsumtions- och produktionsmönster, så krävs inte bara innovationer ocheffektivare produktionsprocesser, utan även en minskning av energi-ochmaterialkonsumtion. Det finns ett framväxande forskningsfält kring begreppsom “tillräcklighet” och ”bortom ekonomisk tillväxt” där man pekar på attdjupgående samhälleliga förändringar behöver ske för att undvika de värstamiljörelaterade konsekvenserna och sociala ojämlikheter. Med utgångspunkt i litteratur kring hållbar konsumtion, politik ochstyrmedel för tillräcklighet, samt hur hållbarhetsinitiativ kan få störregenomslag, eller ”skalas”, har denna avhandling som syfte att bidra till ökadkunskap om social och ekologisk omställning, med specifikt fokus på(o)hållbar konsumtion. Sverige utgör den geografiska kontexten med dess, åena sidan, starka engagemang i hållbar utveckling från civilsamhälle, företagoch offentlig sektor och, å andra sidan, ohållbara konsumtion av resurser percapita. Avhandlingen består av fyra vetenskapliga artiklar och en kappa. Den förstaartikeln utforskar hur miljöorganisationer ”ramar in” olikatillräcklighetspraktiker – från de som utgör en del av den monetäramarknaden till de som fokuserar på sociala relationer och icke-kommersiellavärden bortom marknadstransaktioner – för att på så vis nå olikamålgrupper. I den andra artikeln analyseras de individuella motiven ochsocio-ekologiska effekterna av Göteborgs Stads ”rätt till deltid”-policy. Dentredje artikeln utforskar diskurserna kring olika former av cirkuläraekonomier genom att jämföra Naturskyddsförenings kampanj ”Fixa Grejen”och Göteborgs Stads öppna mötesplatser för göra-det- själv reparation, såkallade ”Fixotek”, med den dominerande cirkulär ekonomi diskursen. Denfjärde artikeln utforskar hur olika företagsformer påverkar sociala ochekologiska hållbarhetsdynamiker på den svenska andrahandsmarknaden förkläd, QC 20220907

In the circular economy discourse it is stressed that products ought to be repairable and that repair work is assumed to be growing. However, repair can be organised and performed in different ways – by corporate entities, independent repairers, laypersons and communities. Some corporations are integrating repair and maintenance into their offering, while simultaneously restricting consumers to open, repair or modify their products. In opposition to such developments, there is a movement for “right to repair”, which works for consumers’ legal rights to repair and modify products, pushing for the free availability of spare parts and manuals. Recent years have also seen a growth of repair cafés and other forms of DIY community repair spaces. This paper explores the discourses of DIY community repair through two Swedish case studies – an NGO-led nationwide repair campaign and a local government initiative of open DIY repair spaces. Our case studies show how DIY community repair works towards enabling all, particularly marginalised groups, to participate and live well in a low-impact future. In contrast to the mainstream circular economy discourse, the purpose of community repair is not only about repairing broken stuff and reducing waste, but about building social relations and practicing non-consumerist forms of citizenship. By elucidating these different perspectives on repair – who is to perform it, with what skills and for what purposes – we highlight how the transition to future, more circular economies, can be enacted and steered in ways that allow for different roles and powers for citizen-consumers., QC 20220523, Mistra Sustainable Consumption

Working time reduction (WTR) is a policy that could improve quality of life while reducing environmental impacts. However, WTR coupled with a salary reduction may benefit only higher-income earners and increase social inequalities. Against this background, we analyze how the motivations for and the socioecological outcomes from working less vary across different socioeconomic groups. The analysis is based on a survey conducted among municipal employees under full-time contracts who utilized the City of Gothenburg’s “right to part-time” policy. We find that working less improved quality of life not only for higher-income groups but also for lower-income groups through gains in time affluence, energy, health, and time spent on strengthening social ties. However, three negative effects emerged. First, WTR lead to increased work intensification, particularly among higher-income earners. Second, concerns regarding making ends meet and future retirement income were particularly salient issues among lower-income earners. Finally, WTR to cope with unfavorable working conditions was a much more common motivation among manual workers with lower salaries. We conclude that WTR can be a viable option across a broader range of socioeconomic groups than previously assumed but that it is nevertheless important to consider the effects on social inequality when designing WTR policies., QC 20230109

Syftet med studien är att undersöka hur gymnasieelevers deltagande i modelleringsprocessen ser ut när de genomför grupparbete med Fermiproblem. Detta har undersökts genom att nio elever uppdelade i tre grupper blivit filmade då de löst ett Fermiproblem, en inspelning som därefter transkriberats och kodats utifrån vilket modelleringssteg eleverna arbetat på. Genom att visualisera det kodade materialet som verksamhetsbytesgrafer har elevernas interaktioner på olika modelleringssteg och deras matematiska idéer och konkreta bidrag kunnat analyseras. Studiens resultat visar på att eleverna löser uppgifterna gemensamt i sina grupper genom multipla modelleringscykler, cykler som initieras genom att grupperna både initierar nya faktorer som påverkar Fermiproblemet och genom kontrollräkning och förtydligande sina uträkningar. Analysen visar även på en låg grad av matematisering i elevernas arbete.

QC 20230120

The efficiency approach of moving towards sustainable consumption through mainly technological solutions, which dominates environmental policymaking, has overall failed to reduce the adverse environmental impacts caused by unsustainable consumption patterns. Increasingly, it is recognised that efficiency needs to be coupled with sufficiency, which aims to reduce absolute levels of consumption. While the public policy realm continues to be linked to the efficiency approach, environmental non-governmental organisations have an important role in promoting sufficiency-oriented lifestyles and culture. Through interviews, participant observations and a media review, we analysed campaign strategies applied by environmental non-governmental organisations to promote sufficiency in material goods through less use, increased care and maintenance of products. This article contributes with insights on how sufficiency activities could attract a broader target group, as well as the various challenges and contradictions resulting from this process. To explain these challenges and contradictions, this article creates a conceptual distinction between market- and non–market-based sufficiency activities. The distinction elucidates how environmental non-governmental organisations are promoting activities ranging from those that can be applied within the current market arrangements to those dealing with social relations and non-commercial values beyond market exchange in order to gain cultural resonance., QC 20220111

Author Posting. © American Geophysical Union, 2018. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research-Oceans 123(12), (2018): 8674-8687, doi:10.1002/2018JC013766., A large collaborative program has studied the coupled air‐ice‐ocean‐wave processes occurring in the Arctic during the autumn ice advance. The program included a field campaign in the western Arctic during the autumn of 2015, with in situ data collection and both aerial and satellite remote sensing. Many of the analyses have focused on using and improving forecast models. Summarizing and synthesizing the results from a series of separate papers, the overall view is of an Arctic shifting to a more seasonal system. The dramatic increase in open water extent and duration in the autumn means that large surface waves and significant surface heat fluxes are now common. When refreezing finally does occur, it is a highly variable process in space and time. Wind and wave events drive episodic advances and retreats of the ice edge, with associated variations in sea ice formation types (e.g., pancakes, nilas). This variability becomes imprinted on the winter ice cover, which in turn affects the melt season the following year., This program was supported by the Office of Naval Research, Code 32, under Program Managers Scott Harper and Martin Jeffries. The crew of R/V Sikuliaq provide outstanding support in collecting the field data, and the US National Ice Center, German Aerospace Center (DLR), and European Space Agency facilitated the remote sensing collections and daily analysis products. RADARSAT‐2 Data and Products are from MacDonald, Dettwiler, and Associates Ltd., courtesy of the U.S. National Ice Center. Data, supporting information, and a cruise report can be found at http://www.apl.uw.edu/arcticseastate

QC 20190821

A large collaborative program has studied the coupled air‐ice‐ocean‐wave processes occurring in the Arctic during the autumn ice advance. The program included a field campaign in the western Arctic during the autumn of 2015, with in situ data collection and both aerial and satellite remote sensing. Many of the analyses have focused on using and improving forecast models. Summarizing and synthesizing the results from a series of separate papers, the overall view is of an Arctic shifting to a more seasonal system. The dramatic increase in open water extent and duration in the autumn means that large surface waves and significant surface heat fluxes are now common. When refreezing finally does occur, it is a highly variable process in space and time. Wind and wave events drive episodic advances and retreats of the ice edge, with associated variations in sea ice formation types (e.g., pancakes, nilas). This variability becomes imprinted on the winter ice cover, which in turn affects the melt season the following year.