Description: Das Projekt "Prozesse frueherer Klimaaenderungen im Nordatlantik, festgestellt anhand von Eiskernanalysen, und ihre Verbindung zu Europa und den Alpen" wird vom Umweltbundesamt gefördert und von Universität Bern, Physikalisches Institut, Abteilung für Klima- und Umweltphysik durchgeführt. The North Atlantic region experienced a series of rapid climate oscillations during the past 100'000 years, which are presumably linked to the ocean circulation. The conditions in the North Atlantic have a direct influence on the climate of the Alpine region. The proposed research shall provide new insight into the mechanisms that determine how the climate of the Alps reacts toward global variations. We will investigate the phenomenology of past climate variations and will discern similarities and differences between the North Atlantic region and Central Europe. We will study the changes of the transient behaviour of ocean circulation under 'glacial', 'present', and 'Eemian' conditions and the dynamics of longitudinal and latitudinal changes of deep water formations sites in the North Atlantic. The influence of the variability of the hydrological cycle on the stability of the ocean circulation shall be analysed. The scientific approach will be based on phenomenologocal studies (statistical data analysis from ice cores and other proxy data) and on process studies (model analysis). The main source of data for paleo records will be the GRIP deep ice core. A coarse resolution ocean general circulation model that covers the North Atlantic region north of 10degree S shall be set up. The expected results should improve our understanding of the relevant processes determining natural variability and of past and possibly future climate variations. The investigation of the role of the North Atlantic ocean circulation and its relevance for the climate in Europe is an important contribution to the integrated assessment of climate dynamics in the Alpine Region. The study of the rate of change of past climate shifts will help us to estimate the rate of the expected future warming, which is an importanf factor for agriculture, tourism, recreation, building-trade, inhabitants of directly endangered locations (flood, draught, avalanches) etc. The proposed work will complement the main stram research of the division of Climate and Environmental Physics at the Univrsity of Berne and we expect a mutual benefit of this project and proposed research within several EU projects currently under review. Leading Questions: What is the natural variability of the North Atlantic region on the decadal-millennial scale? What are processes of ocean dynamics that cause natural variability? What stable modes of circulation exist in the North Atlantic?
Types:
SupportProgram
Origin: /Bund/UBA/UFORDAT
Tags: Tierhaltungsanlage ? Paläoklimatologie ? Bern ? Klimatologie ? Hochwasser ? Main ? Eis ? Klimavariabilität ? Tiefenwasser ? Globale Erwärmung ? Statistische Daten ? Mitteleuropa ? Ozeanzirkulation ? Globales Klimamodell ? Klimaforschung ? Bohrkern ? Daten ? Literaturauswertung ? Standortwahl ? Statistische Analyse ? Studie ? Wasserkreislauf ? Zirkulationsmodell ? Meeresgewässer ? Lawine ? Globale Veränderung ? Alpen ? Europa ? Nordatlantik ? Atlantischer Ozean ? Klimawandel ? Klimabeeinflussung ? Umweltveränderung ? Klimaentwicklung ? Zirkulation ? Landwirtschaft ? Bevölkerung ? Tourismus ? Globale Aspekte ? Klima ? natural variability ? Temperaturerhöhung ? numerical modelling ? paleoclimate ?
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1996-01-01 - 1999-04-30
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