Climate-Scale Modelling of Rainstorm-Induced Organic Carbon Losses in Land-Soil of Thune Alpine Areas, Switzerland

Chapter
Part of the Advances in Natural and Technological Hazards Research book series (NTHR, volume 39)

Abstract

The erosion and transport of solid and dissolved sediment are largely a function of human activities, climate and geology (reflecting both topography and lithology). Modelling of organic sedimentation is important to understand climate-driven changes in past carbon storage and explore scenarios of future evolution. The main difficulty is to separate the effects of climate change, human activity and the high natural variability of river basins, and to consider the non-stationary sediment records. Basins of mountainous lakes are less affected by human actions and represent a good indicator of how climate variability drives the sediment delivery and carbon accumulation. Alpine basins, in particular, are interesting cases for evaluating simplified approaches to the modelling of annual sediment yields. The model developed in this study (TOCCLIM) extracts percentiles and runoff from the seasonal rainfall data to estimate how changes in the rainfall pattern can influence the fluxes of total organic carbon (TOC). The TOCCLIM was evaluated in the Lake Thun (Switzerland) and used to reconstruct the hydroclimatic forcing of the TOC back to 1600. Land-use changes were taken into account only through feedbacks on the precipitation regimes. We show that some predictive skill can be obtained for inter-to-multidecadal analysis.

Keywords

Total Organic Carbon Sediment Transport Sediment Yield Sediment Delivery Runoff Depth 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 2014

Authors and Affiliations

  1. 1.Met European Research ObservatoryBeneventoItaly
  2. 2.Grassland Ecosystem Research UnitFrench National Institute of Agricultural ResearchClermont-FerrandFrance

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