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Sökning: WFRF:(Hartl Meier Claudia)

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1.
  • Esper, Jan, et al. (författare)
  • Ranking of tree-ring based temperature reconstructions of the past millennium
  • 2016
  • Ingår i: Quaternary Science Reviews. - : Elsevier BV. - 0277-3791 .- 1873-457X. ; 145, s. 134-151
  • Tidskriftsartikel (refereegranskat)abstract
    • Tree-ring chronologies are widely used to reconstruct high-to low-frequency variations in growing season temperatures over centuries to millennia. The relevance of these timeseries in large-scale climate reconstructions is often determined by the strength of their correlation against instrumental temperature data. However, this single criterion ignores several important quantitative and qualitative characteristics of tree-ring chronologies. Those characteristics are (i) data homogeneity, (ii) sample replication, (iii) growth coherence, (iv) chronology development, and (v) climate signal including the correlation with instrumental data. Based on these 5 characteristics, a reconstruction-scoring scheme is proposed and applied to 39 published, millennial-length temperature reconstructions from Asia, Europe, North America, and the Southern Hemisphere. Results reveal no reconstruction scores highest in every category and each has their own strengths and weaknesses. Reconstructions that perform better overall include N-Scan and Finland from Europe, E-Canada from North America, Yamal and Dzhelo from Asia. Reconstructions performing less well include W-Himalaya and Karakorum from Asia, Tatra and S-Finland from Europe, and Great Basin from North America. By providing a comprehensive set of criteria to evaluate tree-ring chronologies we hope to improve the development of large-scale temperature reconstructions spanning the past millennium. All reconstructions and their corresponding scores are provided at www.blogs.uni-mainz.de/fb09climatology.
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2.
  • Trnka, Miroslav, et al. (författare)
  • Priority questions in multidisciplinary drought research
  • 2018
  • Ingår i: Climate Research (CR). - : Inter-Research Science Center. - 0936-577X .- 1616-1572. ; 75, s. 241-260
  • Tidskriftsartikel (refereegranskat)abstract
    • Addressing timely and relevant questions across amultitude of spatio-temporal scales,state-of-the-art interdisciplinary drought research will likely increase in importance under projectedclimate change. Given the complexity of the various direct and indirect causes and consequences of adrier world, scientific tasks need to be coordinated efficiently. Drought-related research endeavorsranging from individual projects to global initiatives therefore require prioritization. Here, wepresent 60 priority questions for optimizing future drought research. This topical catalogue reflectsthe experience of 65 scholars from 21 countries and almost 20 fields of research in both naturalsciences and the humanities. The set of drought-related questions primarily covers drought monitoring,impacts, forecasting, climatology, adaptation, as well as planning and policy. The questionshighlight the increasingly important role of remote sensing techniques in drought monitoring, importanceof drought forecasting and understanding the relationships between drought parametersand drought impacts, but also challenges of drought adaptation and preparedness policies.
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