A5063119166- Climate variability and models
- Hydrology and Watershed Management Studies
- Hydrology and Drought Analysis
- Meteorological Phenomena and Simulations
- Flood Risk Assessment and Management
- Atmospheric and Environmental Gas Dynamics
- Tree-ring climate responses
- Geophysics and Gravity Measurements
- Climate Change and Health Impacts
- Soil Geostatistics and Mapping
- Environmental Science and Technology
- Urban Heat Island Mitigation
- Plant Water Relations and Carbon Dynamics
- Cryospheric studies and observations
- Hydrology and Sediment Transport Processes
- Oceanographic and Atmospheric Processes
- Spatial and Panel Data Analysis
- Corporate Social Responsibility and Sustainability
- Agricultural Economics and Policy
- Climate Change and Geoengineering
- Climate Change and Environmental Impact
- Environmental Monitoring and Data Management
- Scientific Research and Studies
- Ecology, Conservation, and Geographical Studies
- Historical Geography and Cartography
Deutscher Wetterdienst
2012-2024
Potsdam Institute for Climate Impact Research
2024
University of Freiburg
2006-2010
Regional climate models predict an intensification of extreme heat waves in Central Europe. Against this background, the significance human-biometeorologically orientated urban planning strategies is increasing by which impairment thermal comfort for people cities future can be minimised. Such require quantitative information on factors determining human within different quarters. With respect to these problems, joint research project KLIMES funded German Federal Ministry Education and...
We present a 1-km2 gridded German dataset of hourly surface climate variables covering the period 1995 to 2012. The comprises 12 including temperature, dew point, cloud cover, wind speed and direction, global direct shortwave radiation, down- up-welling longwave sea level pressure, relative humidity vapour pressure. This was constructed statistically from station data, satellite observations model data. It is outstanding in terms spatial temporal resolution number variables. For each...
Abstract The integration of extreme historical floods in contemporary flood protection contributes towards improved risk management and safer handling the future. As a case study within "Xfloods" project at University Freiburg (Germany), discharges 1824 Neckar River basin (Baden-Württemberg/southwest Germany) were reconstructed using data. Quantitative qualitative sources applied to model regional atmospheric circulation pattern, weather conditions precipitation distribution associated with...
Abstract Long time series can be potentially influenced by breakpoints. This study presents an automatic procedure to detect and homogenize breakpoints in German daily monthly mean temperature series. To verify metadata information is used. The homogenization tool evaluated with a synthetic data set the result of smaller bias RMSE than unhomogenized data. For homogenized most cases, less are detected compared raw differences trends before after small (0.05 K/length each series). presented...
Abstract. This paper presents a case study on the estimation of peak discharges extreme flood events during 19th century Neckar River located in south-western Germany. It was carried out as part BMBF (German Federal Ministry Education and Research) research project RIMAX (Risk Management Extreme Flood Events). The discharge estimations were made for 1824 1882 events, are based historical cross profiles. 1-D model Hydrologic Engineering Centers Analysis System (HEC-RAS) applied with different...
For the period 1978 to 2001, physically based model BROOK90 has been applied simulate water balance of Scots pine forest (Pinus sylvestris L.) at meteorological experimental site Hartheim with emphasis on drought. The is located in southern upper Rhine plain, which shows climate conditions similar those predicted by regional models for Central Europe. transpiration index (ratio actual and potential transpiration) chosen as an ecophysiologically drought a daily basis. Simulations exhibit that...
Abstract. This paper presents a hydrometeorological reconstruction of the flood triggering meteorological situation and simulation discharges event December 1882 in Neckar catchment Baden-Württemberg (southwest Germany). The course southwest Germany weather conditions which led to this were reconstructed by evaluating information from various historical sources. From these data, daily input data sets derived for run-off modeling. For determination precipitation pattern at end 1882, sparse...
Abstract. Precise quantification of climate change depends on long time series meteorological variables. Such should be as homogeneous possible but some changes measurement conditions cannot prevented. At German reference stations, parallel measurements are used to analyze the effects in systems for example transition from manual automatic instruments. These aim identify uncertainties and comparability investigate homogeneity. In this study, we daily sunshine duration. Traditionally,...
Abstract. The research programme KLIWAS, funded by the German Federal Ministry of Transport, Building and Urban affairs is focussed on climate change its impacts waterways navigation for Germany in 21th century. In order to derive sound statements about range possible future changes, KLIWAS use hydro-meteorological information derived from a wide variety global regional models. framework emphasis taken quantification uncertainties model output. Therefore, 19-member ensemble runs was used. On...
Historic observational data records are an important contribution to climate reconstructions and the analysis of past weather events. Particularly in remote sparse regions, such as open ocean, newly rescued can significantly improve knowledge climatic conditions earlier decades centuries.Deutscher Wetterdienst (DWD) has several collections original historical from land stations ships worldwide. They comprise not only observations Germany, but also world’s oceans many parts...
Abstract. This paper presents a case study to estimate peak discharges of extreme flood events Neckar River in south-western Germany during the 19th century. It was carried out within BMBF research project RIMAX (Risk Management Extreme Flood Events). The discharge estimations were made for 1824 and 1882 based on historical cross profiles. 1-D model Hydrologic Engineering Centers Analysis System (HEC-RAS) applied with different roughness coefficients. results are compared (i) contemporary...
Abstract High‐quality time series of meteorological observations are required for reliable assessments climate trends. To analyze inhomogeneities in series, parallel measurements can be used. Germany's national service DWD (Deutscher Wetterdienst) operates a network reference stations. At these stations, manual and automatic have been taken parallel. These therefore allow analyzing the impact transition on homogeneity several parameters. Here, we present results temperature. The differences...
Eine meteorologische Reanalyse bildet einen auf Grundlage eines numerischen Wettervorhersagemodells in Kombination mit Verfahren der Datenassimilation erstellten Datensatz zur Bearbeitung meteorologischer und klimatologischer Fragestellungen.Globale Reanalysen sind wesentlicher Bestandteil operationeller Klimadienste werden für die Überwachung des Klimas seiner Veränderungen, kommerzielle Anwendungen sowie im Bereich Forschung Lehre genutzt.Besonders Energiesektor...
Eine der Aufgaben des Deutschen Wetterdienstes ist die Klimaüberwachung für Deutschland. Dazu verwendet DWD Daten Wetterstationen in seinem Messnetz Kombination mit den historischen Klimadaten, auch durch Vorgängerorganisationen erhoben wurden. Für Zeitraum seit 1881 sind somit flächendeckende und systematisch erhobene Messungen verfügbar, eine Beschreibung Klimawandels Deutschland genutzt werden. bis 2022 beträgt lineare Trend...
Bereits im Jahr 2022 lag das globale Mittel der Temperatur 1,15 Kelvin über dem vorindustriellen Niveau (1850-1900) und damit nur noch 0,35 K unter 1,5-Grad-Schwelle des Pariser Klimaabkommens. Schon ohne Rekordjahr 2023 waren die vergangenen acht Jahre global wärmsten seit Beginn Aufzeichnungen das, obwohl 2020-2022 ausgeprägte La Niña waren, von denen wir wissen, dass sie eher kühlend auf wirken. Im Laufe Jahres endete aber Phase wurde einem...
The development and provision of regional reanalyses requires a coordinated quality assessment targeted to user needs. Regional with higher temporal spatial resolution are particular importance for applications in the energy sector. Detailed information is required on meteorological parameters such as wind speed direction at hub heights modern turbines (offshore onshore), global radiation near-surface temperature. In addition, interest climate dealing extremes strong wind, heat waves, heavy...
To ensure consistent time series of climate observations, the German Meteorological Service (DWD) operates out parallel measurements (e.g. wind and precipitation measurements) at reference stations. Parallel subsequent generations operational measurement systems are carried over several years selected ten locations with different environmental conditions in order to evaluate quality data obtained, analyse systematic differences between instrument types homogeneity series.A key feature...
Abstract. Precipitation extremes form the basis of many engineering design decisions. Extremes are rare events which may differ strongly from “normal” observations. Unfortunately, some observed be inaccurate or false. The purpose this investigation is to present a quality check using space-time statistical methods. As first step, biggest values for each observation location and event duration selected. For these all other stations corresponding same time steps collected transformed Box-Cox...
Abstract. Information about precipitation extremes is of vital importance for many hydrological planning and design purposes. However, due to various sources error, some the observed may be inaccurate or false. The purpose this investigation present quality control using space–time statistical methods. To cope with highly skewed rainfall distribution, a Box–Cox transformation suitable parameter was used. value at location potential outlier estimated surrounding stations calculated spatial...
The development of regional reanalyses aims at the provision high-resolution data sets that are suitable for climate applications and services. As desired information can barely be provided by either synoptic or remote sensing observation data, a growing interest in high-quality is recognisable. Particular demand arises from renewable energy sector. Further quality gains expected using an ensemble approach, e.g. making available uncertainty when moving towards higher...