@article{WalzBraendleLangetal.2014, author = {Walz, Ariane and Braendle, J. M. and Lang, D. J. and Brand, Fridolin Simon and Briner, Simon and Elkin, C. and Hirschi, C. and Huber, R. and Lischke, H. and Schmatz, D. R.}, title = {Experience from downscaling IPCC-SRES scenarios to specific national-level focus scenarios for ecosystem service management}, series = {Technological forecasting \& social change}, volume = {86}, journal = {Technological forecasting \& social change}, publisher = {Elsevier}, address = {New York}, issn = {0040-1625}, doi = {10.1016/j.techfore.2013.08.014}, pages = {21 -- 32}, year = {2014}, abstract = {Scenario analysis is a widely used approach to incorporate uncertainties in global change research. In the context of regional ecosystem service and landscape management where global IPCC climate simulations and their downscaled derivates are applied, it can be useful to work with regional sodo-economic scenarios that are coherent with the global IPCC scenarios. The consistency with the original source scenarios, transparency and reproducibility of the methods used as well as the internal consistency of the derived scenarios are important methodological prerequisites for coherently downscaling pre-existing source scenarios. In contrast to well-established systematic-qualitative scenario techniques, we employ here a formal technique of scenario construction which combines expert judgement with a quantitative, indicator-based selection algorithm in order to deduce a formally consistent set of focus scenario. In our case study, these focus scenarios reflect the potential development pathways of major national-level drivers for ecosystem service management in Swiss mountain regions. The integration of an extra impact factor ("Global Trends") directly referring to the four principle SRES scenario families, helped us to formally internalise base assumptions of IPCC SRES scenarios to regional scenarios that address a different thematic focus (ecosystem service management), spatial level (national) and time horizon (2050). Compared to the well-established systematic-qualitative approach, we find strong similarities between the two methods, including the susceptibility to personal judgement which is only partly reduced by the formal method. However, the formalised scenario approach conveys four clear advantages, (1) the better documentation of the process, (2) its reproducibility, (3) the openness in terms of the number and directions of the finally selected set of scenarios, and (4) its analytical power. (C) 2013 Elsevier Inc. All rights reserved.}, language = {en} } @article{GeorgyEkstroemHirschietal.2015, author = {Georgy, C. and Ekstr{\"o}m, S. and Hirschi, R. and Meynet, G. and Groh, J. H. and Eggenberger, P.}, title = {Wolf-Rayet stars as an evolved stage of stellar life}, series = {Wolf-Rayet Stars : Proceedings of an International Workshop held in Potsdam, Germany, 1.-5. June 2015}, journal = {Wolf-Rayet Stars : Proceedings of an International Workshop held in Potsdam, Germany, 1.-5. June 2015}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-88097}, pages = {229 -- 232}, year = {2015}, abstract = {Wolf-Rayet (WR) stars, as they are advanced stages of the life of massive stars, provide a good test for various physical processes involved in the modelling of massive stars, such as rotation and mass loss. In this paper, we show the outputs of the latest grids of single massive stars computed with the Geneva stellar evolution code, and compare them with some observations. We present a short discussion on the shortcomings of single stars models and we also briefly discuss the impact of binarity on the WR populations.}, language = {en} }