A5007004438- Hydrology and Drought Analysis
- Hydrology and Watershed Management Studies
- Flood Risk Assessment and Management
- Climate variability and models
- Peatlands and Wetlands Ecology
- Financial Risk and Volatility Modeling
- Integrated Water Resources Management
- Water Systems and Optimization
- Probabilistic and Robust Engineering Design
- Cryospheric studies and observations
- Meteorological Phenomena and Simulations
- Soil erosion and sediment transport
- Hydrological Forecasting Using AI
- Ecology and biodiversity studies
- Hydrology and Sediment Transport Processes
- Seismic Waves and Analysis
- Water resources management and optimization
- Arctic and Antarctic ice dynamics
- Geology and Environmental Impact Studies
- Landslides and related hazards
- Geophysical Methods and Applications
- Coastal wetland ecosystem dynamics
- Geophysical and Geoelectrical Methods
- Hydraulic flow and structures
- Environmental and Cultural Studies in Latin America and Beyond
Institute of Geophysics
2015-2024
Polish Academy of Sciences
2015-2024
Warsaw University of Technology
2016-2024
Polish Academy of Learning
2013
Laboratoire d’HYdrologie et de GEochimie
2010-2011
Institute of Environmental Engineering
2007
Key Points A general framework for comparing frequency analysis methods Focus is on the predictive performance of Reliability uncertainty estimates assessed using a distribution
Statistical tools are crucial for a variety of hydrological applications, whether to model processes and enhance understanding knowledge or design infrastructure systems. Given the rapid evolution statistical methods need solid theoretical foundation their correct application, multidisciplinary community (STAHY-WG) aggregated under IAHS umbrella contribute this research field. Now, after more than fifteen years since its inception, paper summarizes main achievements productive collaboration...
The main objective of this study was to assess the impact NamSon landfill on subsurface geological structure and hydrological environment by geophysical techniques hydrochemical analysis surface groundwater. electrical resistivity tomography (ERT), self-potential (SP) very low frequency (VLF) methods were used for investigation near landfill. Three profiles (900 m long in total) two-dimensional ERT, VLF density sections 180 SP data points scattered throughout area disposal site constituted...
Abstract The annual peak flow series of the Polish rivers are mixtures summer and winter flows. In Part I a sequence two papers, theoretical aspects applicability seasonal approach to flood frequency analysis (FFA) in Poland discussed. A testing procedure is introduced for model data overall fitness. Conditions objective comparative assessment accuracy maxima (AM) (SM) approaches FFA formulated finally Gumbel (EV1) distribution chosen as detailed investigation. Sampling properties AM...
Abstract The annual peak flow series of Polish rivers are mixtures summer and winter flows. As Part II a sequence two papers, practical aspects applicability seasonal approach to flood frequency analysis (FFA) discussed. Taking A Two‐Component Extreme Value ( TCEV 1) model as an example it was shown in the first part that regardless estimation method, can give profit terms upper quantile accuracy rises with return period is greatest for no variation. In this part, assessment maxima (AM)...
Abstract. Flood frequency analysis (FFA) aims at estimating quantiles with large return periods for an extreme discharge variable. Many FFA implementations are used in operational practice France. These range from the estimation of a pre-specified distribution to continuous simulation approaches using rainfall simulator coupled rainfall–runoff model. This diversity raises questions regarding limits each implementation and calls nation-wide comparison their predictive performances. paper...
This study discusses an application of heavy-tailed distributions to modelling annual peak flows in general and Polish data sets particular. One- two-shape parameter are obtained by transformations random variables. The correct selection a flood frequency model with emphasis on distribution discrimination is then discussed. If wrongly assumed, the error, upper quantile, arising as result, depends method estimation shown analytically for three methods. Asymptotic sampling values (got...
Abstract. The use of non-systematic flood data for statistical purposes depends on the reliability assessment both magnitudes and their return period. earliest known extreme year is usually beginning historical record. Even if one properly assesses historic floods, problem periods remains unsolved. matter at hand that only largest (XM) during whole period its occurrence marks defines length (L). It common practice to as means L value selected an empirical estimate lower bound effective M....
Changes in river flow regime resulted a surge the number of methods non-stationary flood frequency analysis. Common assumption is time-invariant distribution function with time-dependent location and scale parameters while shape are time-invariant. Here, instead distribution, mean standard deviation used. We analyse accuracy two respect to estimation first moments, skewness upper quantiles. The method maximum likelihood (ML) time covariate confronted Two Stage (TS) one (combining Weighted...
An implementation of bias correction and data assimilation using the ensemble Kalman filter (EnKF) as a procedure, dynamically coupled with conceptual rainfall-runoff Hydrologiska Byråns Vattenbalansavdelning (HBV) model, was assessed for hydrological modeling seasonal hydrographs. The enhanced HBV model generated hydrographs an average stream-flow simulation. proposed approach developed to examine possibility (e.g., precipitation soil moisture) from European Organisation Exploitation...
High and low flows associated floods droughts are extreme hydrological phenomena mainly caused by meteorological anomalies modified catchment processes human activities. They exert increasing on human, economic, natural environmental systems around the world. In this context, global climate change along with local fluctuations may eventually trigger a disproportionate response in extremes. This special issue focuses observed events recent past, how these extremes linked to changing...
Cette communication présente les principaux résultats du projet ExtraFlo sur l'estimation des pluies et crues extrêmes. A partir d'un jeu de données conséquent plusieurs milliers stations, une procédure d'inter-comparaison a permis d'évaluer performances d'une trentaine d'implémentations différentes issues combinaisons (modèle probabiliste, méthode d'estimation, cadre local / régional mixte régional). Le mettre en évidence le manque robustesse approches basées traitement statistique série...
Many distributions have been used in flood frequency analysis (FFA) for fitting the extremes data. However, as shown paper, scatter of Polish data plotted on moment ratio diagram shows that there is still room a new model. In we study usefulness generalized exponential (GE) distribution Rivers. We investigate fit GE to maximum flows comparison with inverse Gaussian (IG) distribution, which our previous studies showed best among several models commonly FFA. Since use discrimination procedure...
Northeast Poland, Biebrza Basin. Studying reference ecosystems and their specific features provides information to be used as background principles for ecosystem management. In the case of riparian wetlands, these are hydrological indicators (such average water levels, flooding extents flood duration) that either criteria conservation or remain easy-to-measure targets habitat restoration. We focused on revealing whether any trends in durations inundation exist within near-natural temperate...
Hydrologic design is one of the key tasks hydrologists and most important for majority stakeholders, authorities practitioners. Generally, hydrologic consists dimensioning hydro-structures in order to fulfill a pre-specified purpose related water, e.g. flood protection or water supply. design, therefore, element also engineering activities beyond hydrological application, therefore must be communicated interested parties an appropriate comprehensive way. In this context,...
Abstract. The scientists tend to assume that climatic factors are the only drivers in development of drought. However, this classical assumption is no longer valid Anthropocene, as most catchments have been significantly modified by human factors. Recent theoretical developments shown there mutual interactions and feedback mechanisms – drought shapes humans vice versa. Therefore, study aims assess role impacts on hydrological (HD) characteristics considering runoff baseflow separately. For...
The classical approach to flood frequency analysis (FFA) may result in significant jumps the estimates of upper quantiles along with lengthening series measurements. Our proposal is a multi-model approach, also called aggregation technique, which has turned out be an effective method for modeling maximum flows, large part eliminating disadvantages traditional methods. In this article, we present probability mixture model relying on probabilities non-exceedance constant flow value from...
The spatiotemporal variations in the water balance caused by environmental changes lead to unsteady-state conditions with long- and short-term implications on social economic conditions. aim of this study is extend current knowledge Budyko approach importance model structural uncertainties. We used three Budyko-based models (Turc-Pike, Zhang, Fu) without concept effective precipitation scenarios. parameters were determined together during calibration processes. precipitation-based improved...
The ice phenomena are an inherent component of rivers in temperate, continental, and polar climate zones. Evident progress global warming leads to a decrease snow cover on land water bodies, disrupting the stability hydrological cycle aquatic ecosystems. Although common observations indicate disappearance over recent decades, detailed quantitative research is lacking many regions, especially temperate zone. In this paper, were analyzed southern Poland, located upland mountain areas country,...
Abstract Similarity and differences between linear flood routing modelling (LFRM) frequency analysis (FFA) techniques are presented. The moment matching used in LFRM to approximate the impulse response function (IRF) was applied FFA derive asymptotic bias caused by false distribution assumption. Proceeding this way, other estimation methods were as approximation bias. Using simulation experiments, above investigation extended evaluate sampling As a feedback, maximum likelihood method (MLM)...
Abstract. Flood frequency analysis (FFA) entails the estimation of upper tail a probability density function (PDF) annual peak flows obtained from either maximum series or partial duration series. In hydrological practice, properties various methods quantiles are identified with case known population distribution function. reality, assumed hypothetical model differs true one and cannot assess magnitude error caused by misspecification in respect to any estimated statistics. The opinion about...