TY  - JOUR
A1  - Schaefli, Bettina
A1  - Huss, Matthias
T1  - Simulation of high mountainous discharge : how much information do we need?
N2  - The hydrologic cycle of high mountainous catchments is frequently simulated with simple precipitation-discharge models representing the snow accumulation and ablation behavior of a very complex environment with a set of lumped equations accounting for altitudinal temperature and precipitation gradients. In this study, we present a methodology to include sparse snow depths measurements into the calibration process. Based on this methodology, we assess for a case study, the Rhonegletscher catchment (Switzerland), how much observed information we need to reliably calibrate the model, such that it reproduces the dominant system dynamics, discharge, as well as glacier mass balance. Here, we focus on the question whether observed discharge is sufficient as a calibration variable or whether we need annual or even seasonal glacier mass balance data. Introducing seasonally variable accumulation and ablation parameters is sufficient to enable the simple model to reproduce observed seasonal mass balances for the Rhonegletscher. Furthermore, our results suggest that calibrating the hydrological model exclusively on discharge can lead to wrong representations of the intra- annual accumulation and ablation processes and to a strong bias in long term glacier mass balance simulations. Adding only a few annual mass balance observations considerably reduces this bias. Calibrating exclusively on annual balance data can, in turn, lead to wrong seasonal mass balance simulations. Even if these results are case study specific, our conclusions provide valuable new insights into the benefit of different types of observations for calibrating hydrological models in glacier catchments. The presented multi-signal calibration framework and the simple method to calibrate a semi-lumped model on point observations has potential for application in other modeling contexts.
Y1  - 2010
UR  - http://www.hydrol-earth-syst-sci-discuss.net/volumes_and_issues.html
U6  - https://doi.org/10.5194/hessd-7-8661-2010
SN  - 1812-2108
ER  - 
TY  - JOUR
A1  - Farinotti, Daniel
A1  - King, Edward C.
A1  - Albrecht, Anika
A1  - Huss, Matthias
A1  - Gudmundsson, Gudmundur Hilmar
T1  - The bedrock topography of Starbuck Glacier, Antarctic Peninsula, as determined by radio-echo soundings and flow modeling
JF  - Annals of glaciology
KW  - Antarctic glaciology
KW  - glaciological instruments and methods
KW  - ground-penetrating radar
KW  - ice-shelf tributary glaciers
KW  - radio-echo sounding
Y1  - 2014
U6  - https://doi.org/10.3189/2014AoG67A025
SN  - 0260-3055
SN  - 1727-5644
VL  - 55
IS  - 67
SP  - 22
EP  - 28
PB  - International Glaciological Society
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Levermann, Anders
A1  - Bamber, Jonathan L.
A1  - Drijfhout, Sybren
A1  - Ganopolski, Andrey
A1  - Haeberli, Winfried
A1  - Harris, Neil R. P.
A1  - Huss, Matthias
A1  - Krueger, Kirstin
A1  - Lenton, Timothy M.
A1  - Lindsay, Ronald W.
A1  - Notz, Dirk
A1  - Wadhams, Peter
A1  - Weber, Susanne
T1  - Potential climatic transitions with profound impact on Europe Review of the current state of six 'tipping elements of the climate system'
JF  - Climatic change : an interdisciplinary, intern. journal devoted to the description, causes and implications of climatic change
N2  - We discuss potential transitions of six climatic subsystems with large-scale impact on Europe, sometimes denoted as tipping elements. These are the ice sheets on Greenland and West Antarctica, the Atlantic thermohaline circulation, Arctic sea ice, Alpine glaciers and northern hemisphere stratospheric ozone. Each system is represented by co-authors actively publishing in the corresponding field. For each subsystem we summarize the mechanism of a potential transition in a warmer climate along with its impact on Europe and assess the likelihood for such a transition based on published scientific literature. As a summary, the 'tipping' potential for each system is provided as a function of global mean temperature increase which required some subjective interpretation of scientific facts by the authors and should be considered as a snapshot of our current understanding.
Y1  - 2012
U6  - https://doi.org/10.1007/s10584-011-0126-5
SN  - 0165-0009
SN  - 1573-1480
VL  - 110
IS  - 3-4
SP  - 845
EP  - 878
PB  - Springer
CY  - Dordrecht
ER  -