A5069561245- Wind and Air Flow Studies
- Atmospheric chemistry and aerosols
- Air Quality and Health Impacts
- Urban Heat Island Mitigation
- Air Quality Monitoring and Forecasting
- Meteorological Phenomena and Simulations
- GNSS positioning and interference
- Building Energy and Comfort Optimization
- Vehicle emissions and performance
- Solar Radiation and Photovoltaics
- Geophysics and Gravity Measurements
- Energy Load and Power Forecasting
- Atmospheric and Environmental Gas Dynamics
- Ionosphere and magnetosphere dynamics
- Reservoir Engineering and Simulation Methods
- Plant Water Relations and Carbon Dynamics
- Climate variability and models
- Atmospheric aerosols and clouds
- Insurance, Mortality, Demography, Risk Management
- Atmospheric Ozone and Climate
- Global Health Care Issues
- Photovoltaic System Optimization Techniques
- BIM and Construction Integration
- Advanced Statistical Methods and Models
- Inertial Sensor and Navigation
Czech Academy of Sciences, Institute of Computer Science
2014-2025
Czech Academy of Sciences
2010-2025
Czech Technical University in Prague
2017
Abstract. Urban areas are an important part of the climate system and many aspects urban have direct effects on human health living conditions. This implies that reliable tools for local studies supporting sustainable planning needed. However, a realistic implementation canopy processes still poses serious challenge weather modelling current generation numerical models. To address this demand, new surface model (USM), describing energy environments, was developed integrated as module into...
Abstract. In recent years, the PALM 6.0 modelling system has been rapidly developing its capability to simulate physical processes within urban environments. Some examples in this regard are energy-balance solvers for building and land surfaces, a radiative transfer model account multiple reflections shading, plant-canopy consider effects of plants on flow (thermo)dynamics, chemistry transport enable simulation air quality. This study provides thorough evaluation modelled meteorological,...
Abstract. We present the process of and difficulties in acquiring proper boundary conditions (BCs) for state-of-the-art large-eddy simulation (LES)-based PALM model system. use mesoscale Weather Research Forecasting (WRF) as a source inputs preprocessor investigate influence on performance model. A total 16 different WRF configurations were used proxy multi-model ensemble. developed technique selecting suitable sets BCs, performed simulations driven by these investigated consequences...
Abstract. This paper introduces FUME 2.0, an open-source emission processor for air quality modeling, and documents the software structure, capabilities, sample usage. provides a customizable framework preparation tailored to user needs. It is designed work with heterogeneous inventory data, unify them into common generate model-ready emissions various chemical transport models (CTMs). Key features include flexibility in input data formats, support spatial temporal disaggregation,...
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Abstract. Fine particulate matter (PM2.5) is among the air pollutants representing most critical threat to human health in Europe. For designing strategies mitigate this kind of pollution, it essential identify and quantify sources its components. Here, we utilized regional chemistry transport model CAMx (Comprehensive Air Quality Model with Extensions) investigate relationships between emissions from different categories concentrations PM2.5 secondary components over Central Europe during...
The development of integrated urban services requires the implementation informative tools that provide a balance between quality, time and costs for air quality assessment. Within this framework, three modeling techniques with different levels complexity were compared during winter inversion episode against PM10 concentrations measured in built-up area Prague (Czech Republic) characterized by heavy traffic. Although Gaussian model ATEM satisfied common statistical-performance criteria,...
Abstract While the positive effect of trees on thermal comfort is well‐established, particularly in urban street canyons, their impact air quality remains questionable, especially case pollutants emitted by heavy traffic at pedestrian level. Complex microscale models an boundary layer with a high spatial resolution (down to 1 m) enable deeper understanding most processes street‐level scale and can simulate selected variables related bio‐meteorology precision fidelity. In this study,...
Abstract. As part of the TURBAN project, “Legerova campaign” investigated air quality and meteorology in a traffic-dense area Prague, Czech Republic, from 30 May 2022 to 28 March 2023. The study deployed network 20 low-cost sensor (LCS) stations measure NO2, O3, PM10 PM2.5 concentrations, complemented by advanced meteorological instruments such as microwave radiometer Doppler lidar. Ensuring data LCS measurements presented significant challenges. Initial field tests at reference monitoring...
While the benefits of trees for thermal comfort in urban street canyons are well established, their impact on air quality remains uncertain, particularly regarding pollutants emitted by heavy traffic at pedestrian level. High-resolution microscale models boundary layer, such as Large Eddy Simulation (LES)-based models, provide valuable insights into street-level processes, allowing precise simulations and bio-meteorological variables.To explore this complex interaction, study employed LES...
Air quality deterioration in street canyons is an important issue strongly influencing human health, and the microscale LES models can provide very detailed information about its spatial temporal structure. However, proper model configuration comprehensive validation real urban conditions still represent a significant challenge that has not been fully addressed. We present campaign conducted traffic-laden area of Prague focusing on structure concentration fields. Almost one year field...
Cities and urban climates have a highly dynamic relationship. Many factors contribute to the framework of this relationship making its evaluation challenging. Ongoing climate change, lack resilience, exposure city dwellers hazards (e.g., increased thermal stress) are pressing researchers offer mitigation solutions. Urban atmospheric processes not isolated affected by morphology nature human activities. Specifically, urban-induced heat stress is tightly connected radiative transfer (RTPs) in...
The overall impact of urban environments on the atmosphere is result many different nonlinear processes, and their reproduction requires complex modeling approaches. parameterization these processes in models can have large impacts model outputs. In this study, evaluation a WRF/Comprehensive Air Quality Model with Extensions (CAMx) forecast system set up for Prague, Czech Republic, within project URBI PRAGENSI presented. To assess WRF, case BEP+BEM (Building Environment Parameterization...
Abstract. Sensitivity of the PALM model 6.0 with respect to land-surface and building properties is tested in a real urban environment vicinity typical crossroads densely built-up residential area Prague, Czech Republic. The turbulence-resolving able simulate boundary layer flow for realistic setups. Besides an accurate representation relevant physical processes, performance also depends on input data describing setup, namely properties. Two types scenario are employed. first one synthetic...
Large-eddy simulation (LES) models, such as the PALM modeling system in this study, are actively used for urban micro-climate modeling. We consider LES a broader context mature high-resolution model integrated services (IUS), which is an initiative of World Meteorological Organization that provides component decision-support systems. A requires iterations quantitative information from knowledge providers and qualitative expert assessments communities practice. present two pilot PALM-aided...
Abstract. Urban air quality is an important part of human well-being, and its detailed precise modeling for efficient urban planning. In this study the potential sources errors in large eddy simulation (LES) runs PALM model stable conditions a high-traffic residential area Prague, Czech Republic, with focus on street canyon ventilation, are investigated. The evaluation simulations against observations obtained during dedicated campaign revealed unrealistically high concentrations modeled...
Abstract An air‐quality forecasting system based on the pair ‘NWP model MM5–chemistry transport CAMx’ is proposed. A version of ensemble Kalman Filter has been developed. The model‐error covariance matrix parametrized with help a function and represented by an formed as random selection from leading eigenvectors. performance tested case ozone episode in June 2001. As source observations, AirBase database used. Starting forecast analysed concentration fields improves quality next day's...
This paper presents a simple and robust wind power forecasting approach using inputs from state-of-the-art numerical weather prediction models (NWP) with mesoscale resolution. The model can be used for short-term longer term horizon up to 72 hours ahead. ability of the presented is demonstrated real production data Czech Republic.
Abstract. Numerical models that combine weather forecasting and atmospheric chemistry are here referred to as chemical models. Eighteen operational on regional continental scales in Europe described compared this article. Topics discussed article include how integrated into systems, physical processes incorporated the through parameterization schemes, model architecture affect predicted variables, air aerosol formulated. In addition, we discuss sensitivity analysis evaluation of models, user...
Abstract. The PALM 6.0 model system has been rapidly developed in the recent years with respect to its capability simulate physical processes within urban environments. In this regard, it includes e.g. energy-balance solvers for building and land surfaces, a radiative transfer account multiple reflections shading, as well plant-canopy consider effects of plants on (thermo)dynamics flow. This study provides thorough evaluation modelled meteorological, air chemistry wall-surface quantities...