A framework for the cross-sectoral integration of multi-model impact projections: land use decisions under climate impacts uncertainties

K. Frieler , A. Levermann , J. Elliott (1) , J. Heinke (2) , A. Arneth (3) , F. Bierkens , Philippe Ciais (4, 5) , D. Clark , D. Deryng (6) , P. Döll (7) , P. Falloon , B. Fekete , C. Folberth , D. Friend , C. Gellhorn , N. Gosling , I. Haddeland (8) , N. Khabarov , M. Lomas (9) , Y. Masaki (10) , K. Nishina , K. Neumann , T. Oki (11) , R. Pavlick , C. Ruane , E. Schmid , C. Schmitz , T. Stacke (12) , E. Stehfest (13) , Q. Tang , D. Wisser , V. Huber , F. Piontek , L. Warszawski , J. Schewe , H. Lotze-Campen (2) , H. Schellnhuber

1 MPE - Max-Planck-Institut für Extraterrestrische Physik
2 PIK - Potsdam Institute for Climate Impact Research
3 Department of Physical Geography and Ecosystems Analysis
4 LSCE - Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette]
5 ICOS-ATC - ICOS-ATC
6 GISS - NASA Goddard Institute for Space Studies
7 Institute of Physical Geography
8 NVE - Norwegian Water Resources and Energy Directorate
9 CTCD - Centre for Terrestrial Carbon Dynamics: National Centre for Earth Observation
10 Department of Life Science,
11 Institute of Industrial Science
12 MPI-M - Max Planck Institute for Meteorology
13 Netherlands Environmental Assessment Agency

Over the past decades, X-ray computed tomography (CT) has been increasingly applied in the geo-sciences community. CT scanning is a rapid, non-destructive method allowing the assessment of relative density of clasts in natural archives samples. This study focuses on the use of this method to explore instantaneous deposits as major contributors to sedimentation of high-elevation lakes in the Alps, such as the Lake Lauvitel system (western French Alps). This lake is located within a very steep valley prone to episodic flooding and features gullies ending in the lake. This variety of erosion processes leads to deposition of sedimentary layers with distinct clastic properties. We identified 18 turbidites and 15 layers of poorly sorted fine sediment associated with the presence of gravels since AD 1880. These deposits are respectively interpreted as being induced by flood and wet avalanche. This constitutes a valuable record from a region where few historical records exist. This CT scan approach is suitable for instantaneous deposit identification to reconstruct past evolution and may be applicable to a wider variety of sedimentary archives alongside existing approaches.

Domaines: Océan, Atmosphère; Interfaces continentales, environnement

K. Frieler, A. Levermann, J. Elliott, J. Heinke, A. Arneth, et al.. A framework for the cross-sectoral integration of multi-model impact projections: land use decisions under climate impacts uncertainties. Earth System Dynamics, 2015, 6 (2), pp.447 - 460. ⟨10.5194/esd-6-447-2015⟩. ⟨hal-01805264⟩