Reconstructing five decades of sediment export  from two glacierized high-alpine catchments in  Tyrol, Austria, using nonparametric regression

Schmidt, Lena Katharina; Francke, Till; Grosse, Peter Martin; Mayer, Christoph; Bronstert, Axel

doi:https://doi.org/10.5194/hess-27-1841-2023

Articles | Volume 27, issue 9

https://doi.org/10.5194/hess-27-1841-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/hess-27-1841-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 27, issue 9

Research article

|

11 May 2023

Research article |

| 11 May 2023

Reconstructing five decades of sediment export from two glacierized high-alpine catchments in Tyrol, Austria, using nonparametric regression

Lena Katharina Schmidt, Till Francke, Peter Martin Grosse, Christoph Mayer, and Axel Bronstert

Model code and software

A Quantile Regression Forests approach for sedigraph-reconstruction and sediment yield calculation L. K. Schmidt, P. M. Grosse, and T. Francke https://b2share.109960a9fb42427b9d0a85b998b9d18c

Short summary

We present a suitable method to reconstruct sediment export from decadal records of hydroclimatic predictors (discharge, precipitation, temperature) and shorter suspended sediment measurements. This lets us fill the knowledge gap on how sediment export from glacierized high-alpine areas has responded to climate change. We find positive trends in sediment export from the two investigated nested catchments with step-like increases around 1981 which are linked to crucial changes in glacier melt.