Filetype
Measurements of tropospheric ozone at three sites at the Arctic Circle in the Finnish Lapland are presented. The variability of ground-level ozone over the diurnal and seasonal cycles in 1992-93 is discussed for the sites of Oulanka and Pallas. The variability with height and over the annual cycle in 1989-94 is discussed for the Sodankyla aerological Observatory, which has the longest record on th
LONG-TERM depletion of ozone has been observed since the early 1980s in the Antarctic polar vortex, and more recently at mid-latitudes in both hemispheres, with most of the ozone loss occurring in the lower stratosphere1. Insufficient measurements of ozone exist, however, to determine decadal trends in ozone concentration in the Arctic winter. Several studies of ozone concentrations in the Arctic
In this study we address the question of temporal ozone trends on isentropic surfaces within the Arctic polar vortex during EASOE. We have combined ozone sonde data from twelve campaign stations distributed throughout the European sector of the Arctic. The development of ozone at the 425, 475, 550 and 700K levels is presented, using analysed fields of isentropic potential vorticity and isentropic
This special issue of Climatic Change contains a series of research articles documenting co-ordinated work carried out within a 3-year European Union project 'Prediction of Regional scenarios and Uncertainties for Defining European Climate change risks and Effects' (PRUDENCE). The main objective of the PRUDENCE project was to provide high resolution climate change scenarios for Europe at the end o
The Swedish Regional Climate Modelling Programme, SWECLIM, was a 6.5-year national research network for regional climate modeling, regional climate change projections and hydrological impact assessment and information to a wide range of stakeholders. Most of the program activities focussed on the regional climate system of Northern Europe. This led to the establishment of an advanced, coupled atmo
While delays in human-robot encounters can harm perceptions of competence, they can also enhance engagement and relatability, making timing a crucial factor in the design of robot behaviors for effective human-robot interaction. Previous research has primarily focused on how robots’ pauses or errors impact perceptions of competence, but it has not adequately addressed the complexity of timing in s
Amid growing geopolitical tensions and the shift toward a multipolar world, research security has emerged as a critical concern for academic institutions and national governments. While efforts to protect science from foreign interference and intellectual property theft are increasing, many current measures lack empirical grounding, clear objectives, or proven effectiveness. This paper discusses t
When children exercise their right to political participation through climate activism and litigation, they demonstrate that an ethics of care is a core component of the postpaternalist era. Children’s ethics of care, however, is not only about care toward their immediate human relations, but also toward other species, the environment they live in and generations to come. They thereby develop the
Thanks to its ability to form a lattice of self-ordered nanosized pores, nanoporous anodic aluminum oxide (NP-AAO) is a promising material with diverse applications, for example, as membrane for the controlled deposition of catalysts. NP-AAO is obtained by the anodization of an aluminum substrate under specific pH and voltage conditions. However, the growth mechanism of the oxide is still under de
It is widely believed that Friedrich Hayek's first encounter with Gunnar Myrdal involved the latter's last-minute contribution, as a replacement for Erik Lindahl, to a Sammelband edited by the former in 1933, and that Hayek was lukewarm toward Myrdal and his ideas from the very beginning. Correspondence between the two shows that, in fact, their interaction about this contribution began two years
Passivity refers to spontaneous formation of a passive film on the surface of metals. High stability of the passive film on advanced alloys relies on the repassivation ability of the alloys in corrosive environments. Two Ni-base superalloys (Ni-22Cr-9Mo-5Fe-2Nb and Ni-18Cr-3Mo-20Fe-5Nb) are studied to elucidate the mechanism of repassivation through a combination of multimodal in-situ synchrotron
For Rosa Barba, cinema “allows time and space to vibrate, collapse, overlap, and extend.” Barba’s conceptual explorations of film probe historical records, personal narratives, and the sensory experience of celluloid, often by documenting natural landscapes and human-made changes to the environment. This installation spans 15 years of Barba’s work, featuring film, kinetic sculpture, and sound. A n
The paper explores the nuanced use of computational artefacts in shaping the cooperative work practices of academic library managers. Grounded in a focused ethnographic study involving 21 middle managers from two academic libraries in Sweden and Australia, the research employed participant observation, formal and informal interviews, and document review. The empirical material was thematically ana
In the present paper, we study the so-called “PCDID” approach to treatment effects estimation in panels with interactive effects where the factors represent trends whose effect need not be parallel across the cross-sectional units. Our interest in this step-wise approach originates with the observation that the interactive effects are ignored in the first step, which should not be possible without
Rosa Barba's exhibition Meaning Distances opens this year's 25 FPS Festival at the Museum of Contemporary Art in Zagreb, bringing together a selection of sculptural film works. Barba’s conceptual explorations of film probe historical records, personal narratives, and the sensory experience of cinema and sound, often by recording natural landscapes and human-made changes to the environment. Landsca
A mid career retrospective exhibition celebrating the work of artist and filmmaker Rosa Barba, whose practice destabilses the conceptual terms of cinematic space.
Boreal lakes are generally seen as sources of carbon dioxide (CO2) to the atmosphere, even though a part of them are periodically undersaturated with CO2 and have the potential to be net-autotrophic. This undersaturation is the result of photosynthetic activity by phytoplankton, especially flagellated species like Gonyostomum semen, which form high-biomass blooms in brown water lakes. We hypothesi
Lakes located in the boreal region are generally supersaturated with carbon dioxide (CO2), which emerges from inflowing inorganic carbon from the surrounding watershed and from mineralization of allochthonous organic carbon. While these CO2 sources gained a lot of attention, processes that reduce the amount of CO2 have been less studied. We therefore examined the CO2 reduction capacity during time
