A5025365611- Hydrology and Watershed Management Studies
- Cryospheric studies and observations
- Climate change and permafrost
- Flood Risk Assessment and Management
- Climate variability and models
- Hydrology and Drought Analysis
- Hydrological Forecasting Using AI
- Landslides and related hazards
- Water resources management and optimization
- Precipitation Measurement and Analysis
- Water-Energy-Food Nexus Studies
- Groundwater flow and contamination studies
- Meteorological Phenomena and Simulations
- Hydrology and Sediment Transport Processes
- Soil erosion and sediment transport
- Fish Ecology and Management Studies
- Environmental DNA in Biodiversity Studies
- Geophysics and Gravity Measurements
- Soil Moisture and Remote Sensing
- Plant Water Relations and Carbon Dynamics
- Groundwater and Isotope Geochemistry
- Peatlands and Wetlands Ecology
- Microbial Community Ecology and Physiology
- Winter Sports Injuries and Performance
- Tree-ring climate responses
Oeschger Centre for Climate Change Research
2020-2025
University of Bern
2019-2025
University of Lausanne
2016-2025
Centro Universitário Filadélfia
2021
FORS – Swiss Centre of Expertise in the Social Sciences
2021
Swiss Competence Center for Energy Research – Supply of Electricity
2021
École Polytechnique Fédérale de Lausanne
2010-2019
École Nationale de l’Aviation Civile
2013
Delft University of Technology
2009-2012
University of Potsdam
2007
There has been a long debate on the extent to which precipitation relies terrestrial evaporation (moisture recycling). In past, most research focused moisture recycling within certain region only. This study makes use of new definitions complete process continental feedback. Global maps are presented identifying regions that rely heavily recycled as well those supplying moisture. An accounting procedure based ERA‐Interim reanalysis data is used calculate ratios. It computed that, average,...
The new Scientific Decade 2013–2022 of IAHS, entitled "Panta Rhei—Everything Flows", is dedicated to research activities on change in hydrology and society. purpose Panta Rhei reach an improved interpretation the processes governing water cycle by focusing their changing dynamics connection with rapidly human systems. practical aim improve our capability make predictions resources support sustainable societal development a environment. concept implies focus hydrological systems as interface...
How Do We Communicate Model Performance?The process of model performance evaluation is primary importance, not only in the development and calibration process, but also when communicating results to other researchers stakeholders.The basic 'rule' that every modelling result should be put into context, for example, by indicating using appropriate indicators, highlighting potential sources uncertainty, this practice has found its entry large majority papers conference presentations.While...
Abstract Hydrological model calibration combining Earth observations and in situ measurements is a promising solution to overcome the limitations of traditional streamflow‐only calibration. However, multiple data sources requires meaningful integration sets, which should harness their most reliable contents avoid accumulation uncertainties mislead parameter estimation procedure. This study analyzes improvement selection by using only spatial patterns satellite remote sensing data, thereby...
Snowfall may have different stable isotopic compositions compared with rainfall, allowing its contribution to potentially be tracked through the hydrological cycle. This review summarizes state of knowledge how hydrometeorological processes affect composition snow in forms (snowfall, snowpack, and snowmelt), and, selected examples, discusses water isotopes can provide a better understanding processes. A detailed account is given variability changes from precipitation final melting. The...
Abstract. This paper addresses two major challenges in climate change impact analysis on water resources systems: (i) incorporation of a large range potential scenarios and (ii) quantification related modelling uncertainties. The methodology is developed illustrated through application to hydropower plant the Swiss Alps that uses discharge highly glacierised catchment. impacts are analysed terms system performance for control period (1961–1990) future (2070–2099) under scenarios. simulated...
Abstract This study analyses the uncertainty induced by use of different state‐of‐the‐art climate models on prediction climate‐change impacts runoff regimes 11 mountainous catchments in Swiss Alps having current proportions glacier cover between 0 and 50%. The scenarios analysed are result 19 regional model (RCM) runs obtained for period 2070–2099 based two greenhouse‐gas emission (the A2 B2 defined Intergovernmental Panel Climate Change) three coupled atmosphere‐ocean general circulation...
Abstract. In high mountainous catchments, the spatial precipitation and therefore overall water balance is generally difficult to estimate. The present paper describes structure calibration of a semi-lumped conceptual glacio-hydrological model for joint simulation daily discharge annual glacier mass that represents better integrator balance. has been developed climate change impact studies parsimonious structure; it requires three input times series - precipitation, temperature potential...
This paper presents a calibration framework based on the generalized likelihood uncertainty estimation (GLUE) that can be used to condition hydrological model parameter distributions in scarcely gauged river basins, where data is uncertain, intermittent or nonconcomitant. At heart of this conditioning parameters such as reproduce key signatures observed within some limits acceptability. These are either hard soft information. Hard information defined for which acceptability may objectively...
Twelve actual evaporation datasets are evaluated for their ability to improve the performance of fully distributed mesoscale Hydrologic Model (mHM). The consist satellite-based diagnostic models (MOD16A2, SSEBop, ALEXI, CMRSET, SEBS), prognostic (GLEAM v3.2a, GLEAM v3.3a, v3.2b, v3.3b), and reanalysis (ERA5, MERRA-2, JRA-55). Four distinct multivariate calibration strategies (basin-average, pixel-wise, spatial bias-accounting bias-insensitive) using streamflow implemented, resulting in 48...
Abstract In this Commentary, we argue that it is possible to improve the physical realism of hydrologic models by making better use existing theory. We address following questions: (1) what are some key elements current theory; (2) how can those best be incorporated where they may missing in models; and (3) evaluate competing theories across scales locations? propose science would benefit from a model‐based community synthesis effort reframe, integrate, different explanations behavior,...
Hydropower is a key energy source in almost all world regions. It fuels social and economic development, ensures electricity security, pillar for renewable production. But hydropower its environmental impacts are vulnerable to climate change. This discussion of model‐based change impact assessments underlying modeling assumptions will help decision‐makers scientists analyzing existing studies identifying the most urgent open questions. Rooted hydrological uncertainty analysis, this focuses...
Abstract. This study evaluates the ability of different gridded rainfall datasets to plausibly represent spatio-temporal patterns multiple hydrological processes (i.e. streamflow, actual evaporation, soil moisture and terrestrial water storage) for large-scale modelling in predominantly semi-arid Volta River basin (VRB) West Africa. Seventeen precipitation products based essentially on gauge-corrected satellite data (TAMSAT, CHIRPS, ARC, RFE, MSWEP, GSMaP, PERSIANN-CDR, CMORPH-CRT, TRMM 3B42...
Abstract. Stream temperature and discharge are key hydrological variables for ecosystem water resource management particularly sensitive to climate warming. Despite the wealth of meteorological data, few studies have quantified observed stream trends in Alps. This study presents a detailed analysis 52 catchments Switzerland, country covering wide range alpine lowland regimes. The influence discharge, precipitation, air temperature, upstream lakes on temperatures their temporal is analysed...
Abstract. River ecosystems are highly sensitive to climate change and projected future increase in air temperature is expected the stress for these ecosystems. Rivers also an important socio-economic factor impacting, amongst others, agriculture, tourism, electricity production, drinking water supply quality. In addition changes availability, will impact river temperature. This study presents a detailed analysis of discharge evolution over 21st century Switzerland. total, 12 catchments...
Abstract. Glacio-hydrological models are widely used for estimating current and future streamflow across spatial scales, utilizing various data sources, notably observed snow and/or ice accumulation, as well ablation observations. However, modelling highly glacierized catchments poses challenges due to scarcity complex spatio-temporal meteorological conditions, leading input uncertainty potential misestimation of the contribution melt streamflow. Some studies propose using water stable...
Abstract. The temporal dynamics of hydrological model performance gives insights into errors that cannot be obtained from global measures assigning a single number to the fit simulated time series an observed reference series. These can include in data, parameters, or structure. Dealing with set evaluated at high resolution implies analyzing and interpreting dimensional data set. This paper presents method for such assessment illustrates its application two very different rainfall-runoff...
Abstract. Most hydrological models are valid at most only in a few places and cannot be reasonably transferred to other or far distant time periods. Transfer space is difficult because the conditioned on past observations particular define parameter values unobservable processes that needed fully characterize structure functioning of landscape. has deal with likely temporal changes both parameters under future changed conditions. This remains an important obstacle addressing some urgent...