A5091611138- Climate variability and models
- Hydrology and Watershed Management Studies
- Cryospheric studies and observations
- Atmospheric chemistry and aerosols
- Meteorological Phenomena and Simulations
- Atmospheric and Environmental Gas Dynamics
- Vehicle emissions and performance
- Precipitation Measurement and Analysis
- Plant responses to elevated CO2
- Climate change and permafrost
- Climate change impacts on agriculture
- Soil Moisture and Remote Sensing
- Flood Risk Assessment and Management
- Geophysics and Gravity Measurements
- Atmospheric Ozone and Climate
- Transboundary Water Resource Management
- Hydrological Forecasting Using AI
- Tropical and Extratropical Cyclones Research
- Plant Water Relations and Carbon Dynamics
- Arctic and Antarctic ice dynamics
- Air Quality and Health Impacts
- Groundwater and Isotope Geochemistry
- Peatlands and Wetlands Ecology
- Distributed and Parallel Computing Systems
- Hydrology and Sediment Transport Processes
Karlsruhe Institute of Technology
2014-2024
Institute for Food and Environmental Research
2003-2022
University of Augsburg
2018-2019
University of Stuttgart
2004
Alpenforschungsinstitut (Germany)
2001-2002
Fraunhofer Society
1998
Abstract. Forest soils are a significant source for the primary and secondary greenhouse gases N2O NO. However, current estimates still uncertain due to limited number of field measurements herein observed pronounced variability N trace gas fluxes in space time, which variation environmental factors such as soil vegetation properties or meteorological conditions. To overcome these problems we further developed process-oriented model, PnET-N-DNDC simulates exchange on basis processes involved...
Core Ideas Pre‐alpine areas face more intense warming and extreme hydrological events than the global average. Climate land management change have far‐reaching impacts on ecosystem functions services. We improved knowledge of water, energy, matter exchange by long‐term observations modeling. Global has triggered several transformations, such as alterations in climate, productivity, water resources, atmospheric chemistry, with far reaching Finding solutions to climate cover change‐driven our...
Observational evidence suggests that forests in the Northern Alps are changing at an increasing rate as a consequence of climate change. Yet, it remains unclear whether acceleration forest change will continue future, or downregulating feedbacks eventually decouple dynamics from Here we studied future Berchtesgaden National Park, Germany by means process-based landscape model, simulating ensemble 22 projections until end 21st century. Our objectives were (i) to assess observed (ii) analyze...
In this study, high‐resolution climate change data from the regional models COSMO‐CLM, HIRHAM, RegCM, and REMO were evaluated in Greater Alpine Region (GAR; 4°W–19°W 43°N–49°N) three additional subareas of 1.5° by 1° size. Evaluation statistics include mean temperature precipitation, frequency days with precipitation over 1 mm 15 mm, 90% quantile distribution, maximum number consecutive dry days. The evaluation for 1961–1990 period indicates that reproduce spatial patterns annual cycle....
Abstract Simulations from 13 highly resolved regional climate models run within the Coordinated Downscaling Experiment initiative at 0.11° resolution with boundary forcings five different Coupled Model Intercomparison Project Phase 5 global are employed to derive future change signal for Greater Alpine Region (GAR) and four smaller investigation areas. Evaluation statistics include mean temperature precipitation, frequency of days precipitation over 1 mm 15 mm, 90% quantile distribution,...
Mountain regions with complex orography are a particular challenge for regional climate simulations. High spatial resolution is required to account the high variability in meteorological conditions. This study presents very high-resolution simulation (5 km) using Weather Research and Forecasting Model (WRF) central part of Europe including Alps. Global boundaries dynamically downscaled historical period 1980–2009 (ERA-Interim MPI-ESM), near future 2020–2049 (MPI-ESM, scenario RCP4.5)....
Crati River Basin, Southern Italy, Central Mediterranean. We evaluate the combined effect of multiple global and regional climate model (GCM-RCM) combinations bias correction (BC) methods on hydrological impact projected change. Under representative concentration pathway RCP4.5, 15 EURO-CORDEX members, combining 6 GCMs five high-resolution (0.11°) RCMs, provide meteorological input for a spatially distributed model. RCM-derived data are uncorrected corrected through three empirical methods,...
[1] For the estimation of future climate conditions in Jordan River region, National Center for Atmospheric Research–Penn State University meteorology model versions 3.5 and 3.7 driven with boundary data from Max-Planck-Institute Meteorology Hadley Centre global circulation models Special Report on Emission Scenarios A1B emission scenario has been used. The spatial resolution nested dynamic downscaling approach was 18.6 km, transient runs were performed period 1960–2099. investigated...
An inventory describing the fluxes of volatile organic compound (VOC), isoprene, and class VOCs, monoterpenes, from biosphere to atmosphere has been constructed for Great Britain (GB). The controlling parameters were emission potentials individual plant species, species distribution, biomass temperature, light intensity. Species distribution cover data a national survey vegetation in 1990 used. A database monthly factors was compiled qualitative VOC updated quantitative form. This used...
Commercial microwave link networks allow for the quantification of path integrated precipitation because attenuation by hydrometeors correlates with rainfall between transmitter and receiver stations. The networks, operated maintained cellphone companies, thereby provide completely new country wide measurements. As density traditional station worldwide is significantly decreasing, derived estimates receive increasing attention not only hydrologists but also meteorological hydrological...
[1] Understanding changing trends and frequency of extreme rainfall temperature events is extremely important for optimal planning in many sectors, including agriculture, water resource management, health, even economics. For people living the Jordan River region Middle East such changes can have immediate devastating impacts as resources are already scarce overexploited summer temperatures desert regions reach 45°C or higher. shifts intensity provide crucial information adaptation. In this...
Abstract. Climate change and constant population growth pose severe challenges to 21st century rural Africa. Within the framework of West African Science Service Center on Change Adapted Land Use (WASCAL), an ensemble high-resolution regional climate scenarios for greater region is provided support development effective adaptation mitigation measures. This contribution presents overall concept WASCAL simulations, as well detailed information experimental design, provides format dissemination...
The PrEProcessor of time invariant parameters required for the boundary data definition in COSMO-CLM is described. PEP incorporates present preprocessor from DWD and gives additional access to geospatial information provided by ECOCLIMAP data. It processes various global into spatial resolution rotated coordinates system specified user. Available topography, land cover as well soil characteristics datasets are reviewed their use processing options presented.
Abstract The evaluation of a high‐resolution simulation at 0.11° (12 km) with the COnsortium for Small‐scale MOdelling in CLimate Mode (CCLM) regional climate model, applied over West Africa, is presented. This nested CCLM run resolution 0.44°, driven boundary forcing data from ERA‐Interim reanalysis, and covers period 1981 to 2010. simulated temperature precipitation are evaluated using three selected indices eight five different regions against new, daily climatology covering Africa other...
Abstract With large elevation gradients and high hydrometeorological variability, Alpine catchments pose special challenges to hydrological climate change impact assessment. Data from seven regional models run within the Coordinated Regional Climate Downscaling Experiments (CORDEX), each driven with a different boundary forcing, are used exemplarily evaluate reproduction of observed flow duration curves access future discharge Ammer River located in southern Germany applying simulation model...
Abstract A set of downscaled climate change data from transient experiments with regional models has been used to access the future signal in area Figeh spring system Syria and its potential effects on water availability. The ensemble at a spatial resolution 0.25° investigated for period 1961–90 present-day periods 2021–50 2070–99 climate. focus is changes annual, seasonal, monthly surface air temperature precipitation. For first time, discharge assessed hydrological runoff model based an...
Abstract In this study, we analyze a set of agroclimatological indices across West Africa and assess their projected changes for the future. We apply regional climate model CCLM (COnsortium Small‐scale MOdelling in CLimate Mode) with high spatial resolution 0.11° (approximately 12 km) under current (1981–2010) future conditions, based on emission scenario RCP4.5. The focus is purely rainfall‐based indices, that is, onset (ORS), cessation (CRS), length rainy season (LRS) joint rainfall‐...
Abstract The impact of climate change on the future water availability upper Jordan River (UJR) and its tributaries Dan, Snir, Hermon located in eastern Mediterranean is evaluated by a highly resolved distributed approach with fifth-generation Pennsylvania State University–NCAR Mesoscale Model (MM5) run at 18.6- 6.2-km resolution offline coupled Water Flow Balance Simulation (WaSiM). MM5 was driven NCEP reanalysis for 1971–2000 Hadley Centre Coupled Model, version 3 (HadCM3), GCM forcings...