Amela Jeričević

The application of regional-scale air quality models is an important tool in air quality assessment and management. For this reason, the understanding of model abilities and performances is mandatory. The main objective of this research was to investigate the spatial and temporal variability of background particulate matter (PM) concentrations, to...

High values of particulate matter (PM10) were recorded in the air in many places across South-East Europe on 27 March 2020. The source of dust was traced back to Aralkum Desert. More information on: https://www.eumetsat.int/website/home/Images/ImageLibrary/DAT_4982540.html

The application of regional-scale air quality models is an important tool in air quality assessment and management. For this reason, the understanding of model abilities and performances is mandatory. The main objective of this research was to investigate the spatial and temporal variability of background particulate matter (PM) concentrations, to...

This study investigates fog development over the greater Zagreb area; a long-lasting fog event that took place from 6 to 8 November 2013. According to climatological data, haze and fog occur frequently over the Zagreb airport area and cause severe low visibility that can last for several days. The Zagreb airport is located on a flat terrain south o...

Elevated atmospheric particulate matter concentrations are associated with significant adverse health effects, affect ecosystems, influence visibility and cloud formation in the atmosphere and play an important role in climate change. Air quality modeling makes the connection between the design of effective mitigation strategies and knowledge of ai...

Air transportation growth has rapidly increased over the years and notable influences of aviation emissions on local and regional air quality as well as on climate are identified. The environmental impacts of atmospheric emissions from aircraft have been addressed in two separate ways; aircraft pollutant emissions occurring during the landing and t...

Air pollution due to particulate matter with an aerodynamic diameter ≤ 10 mm (PM 10) and diameter ≤ 2.5 mm (PM 2.5) was investigated using available measurements in Croatia. Hourly and daily PM 10 and PM 2.5 mass concentrations were analysed for urban and rural background stations. Urban and industrial PM 10 measurements from 2006 to 2014 and rural...

This study presents the continuation and exploration of the research by application of regional and high resolution air quality (AQ) models. Separate ‘offline’ (WRF—CAMx) and ‘online’ (WRF Chem) coupling modeling systems were used to evaluate the contribution of the local anthropogenic sources over the Republic of Croatia. Within the research with...

The presentation gives an overview of applicable legislation related to CO2 emissions, the manner and methodology of monitoring emissions, a way of monitoring the compliance of national annual quota focusing on air traffic. Worked suosnovni principles ETS (Emissions Trading Scheme) scheme as a market-oriented principles to be used in the control of...

The PABLS13 (Pannonian Atmospheric Boundary Layer Study 2013) was a measuring international campaign that took place in Szeged (Hungary) in late November 2013. The aim of this campaign was to study the characteristics of the daily cycle of the ABL in the center of the wide Pannonian plain and its interaction with the underlying surface. Data were c...

An experimental campaign was held from November 20 to December 11, 2013 in the airport of Szeged (Hungary), at the center of the Pannonian plain, with an Intensive Observation Period from 26 November to 1st December. Several research teams participated with their instrumentation which included a complete surface-energy budget station, with a novel...

Specific activity of 222Rn in near-ground atmosphere has been measured quasi-continuously from January 2005 to December 2009 at two continental sites in Europe: Heidelberg (south-west Germany) and Krakow (southern Poland). Atmosphere was sampled at ca. 30 m and 20 m, respectively, above the local ground. Both stations were equipped with identical i...

Physical and chemical characteristics within the two distinct meteorological regimes, i.e., convective and stable atmospheric conditions in a complex highly urbanized terrain of the California South Coast Air Basin (CSCAB; the Los Angeles area) were investigated. The Community Multi-scale Air Quality (CMAQ) model was used with a horizontal resoluti...

The influence of mesoscale flow on the elevated O3 concentrations recorded during 13–19 August 2000 in the coastal town of Rijeka (45.33°N, 14.45°E) has been examined. Although high levels of ozone concentration are often observed there, this episode was unique due to hourly afternoon concentrations persistently higher than 180 µg m−3 and nocturnal...

Understanding, monitoring, and forecasting the transport and dispersion of pollutants in the atmosphere in coastal areas is of particular importance since coastal areas are often highly populated. The coastline constitutes an abrupt change in all surface parameters, such as roughness, temperature, and terrain height. Therefore the responses in the...

The simulations of hourly <sup align="right"> 222 </sup>Rn concentrations are performed with the EMEP model to validate different parameterization schemes for vertical mixing. In addition to recently evaluated non-local vertical diffusion schemes, a new scheme which is a local and based on total turbulent energy (TTE) has been implemented in the mo...

Heavy metals are a category of pollutants recognized as dangerous to human health and human exposure occurs through all environmental media. Since metals are naturally occurring chemicals that do not break down in the environment and can accumulate in soils, water and the sediments of lakes and rivers, it is important to evaluate the contribution o...

Accurate regional air pollution simulation relies strongly on the accuracy of the mesoscale meteorological simulation used to drive the air quality model. The framework of the Air Quality Model Evaluation International Initiative (AQMEII), which involved a large international community of modeling groups in Europe and North America, offered a uniqu...

More than ten state-of-the-art regional air quality models have been applied as part of the Air Quality Model Evaluation International Initiative (AQMEII). These models were run by twenty independent groups in Europe and North America. Standardised modelling outputs over a full year (2006) from each group have been shared on the web-distributed ENS...

This paper introduces two changes of the turbulence parameterization for the EMEP (European Monitoring and Evaluation Programme) Eulerian air pollution model: the replacement of the Blackadar in stable and O'Brien in unstable turbulence formulations with an analytical vertical diffusion profile (K(z)) called Grisogono, and a different mixing height...

Based on gradient transport theory or K-theory, turbulent transport in the atmosphere has been parameterized using the eddy diffusivity. Due to its simplicity, this approach has often been applied in many numerical and air quality models but it is rarely verified on observations. Here, the widely used O’Brien cubic polynomial approach has been vali...

Stable atmospheric conditions are often connected with the occurrence of high pollution episodes especially in urban or industrial areas. In this work we investigate a severe SO₂ episode observed on 3–5 February 2002 in a coastal industrial town of Rijeka, Croatia, where very high daily mean concentrations (up to 353.5 μg m⁻³)...

In this study, a time series from the ground level ozone monitoring station for Rijeka (Croatia) as well as the associated meteorological conditions were investigated. In the summer, during 13 to 19 August 2000, the afternoon hourly ozone measurements were consistently higher than the 180 μg m-3 which represents an information threshold of pollutan...

Based on gradient transport theory or K-theory, turbulent transport in the atmosphere has long been parameterized using the eddy diffusivity. Due to its simplicity, this approach has often been applied in many numerical models but rarely tested with observations. Here, the widely used O’Brien cubic polynomial approach has been validated together wi...

A new vertical diffusion scheme, called Grisogono, has been implemented in the Unified EMEP (European Monitoring and Evaluation Programme) model. It is shown based on Large Eddy Simulation (LES) that the Grisogono method performs better than the operational O&apos;Brien&apos;s polynomial, especially in the stable conditions. In this work, the opera...

Stable atmospheric conditions are often connected with the occurrence of high pollutant episodes especially in urban or industrial areas. In this work we investigate a severe pollution SO₂ episode observed on 3–5 February 2002 in a coastal industrial town of Rijeka, Croatia. The episode occurred under anticyclonic high pressure condition...

Abstract: We investigated an unusual elevated-ozone episode that took place at a high altitude measuring site Zavižan (44.817°N, 14.983°E, 1594 m a.s.l.). The episode was characterized by three consecutive peaks. The first one was the highest (over 120 ppbv), and it occurred at the late night on 17 July. Following two (both about 110 ppbv) appeared...

In this short note we discuss a long-standing problem in modelling the atmospheric boundary layer (ABL) over complex terrain: namely, an excessive use of the Monin–Obukhov length scale LMO. This issue becomes increasingly relevant with the ever-increasing resolution of numerical weather-prediction and climate models, which typically use LMO in one...

The evolution of the urban boundary layer height (H) in stable conditions is often highly nonstationary and quasi-steady state equilibrium height is very slowly approached from the initial state after sunset. Nevertheless, diagnostic methods strictly valid for stationary conditions have been widely used in practical applications and prognostic equa...

The international project Environmental Modelling and Evaluation Programme for Croatia (EMEP4HR) is presented. It is a joint project of Norwegian and Croatian meteorological services, University of Zagreb and Energy Research and Environmental Protection Institute (EKONERG) that started in 2006, and is due to last until 2010. The main purpose of thi...

The international project Environmental Modelling and Evaluation Pro- gramme for Croatia (EMEP4HR) is presented. It is a joint project of Nor- wegian and Croatian meteorological services, University of Zagreb and Energy Research and Environmental Protection Institute (EKONERG) that started in 2006, and is due to last until 2010. The main purpose of...

Dispersion models require hourly values of the mixing height ( H ) that indicates the existence and vertical extent of turbulent mixing. Urban areas, which are usually industrial areas too, have H higher than rural areas, and commonly used methods for deriving H should not be applied under the same conditions as in homogeneous conditions. The bulk...

Dispersion models require hourly values of the mixing height (H) that indicates the existence and vertical extent of turbulent mixing. Urban areas, which are usually industrial areas too, have H higher than rural areas, and commonly used methods for deriving H should not be applied under the same conditions as in homogeneous conditions. The bulk Ri...

This study will demonstrate the accuracy of using modelled instead of measured meteorological input in an air pollution dispersion model. Since, it is not always possible to have measured data the Numerical Weather Prediction (NWP) models are employed to provide the input. The widely used steady-state Gaussian plume model ISC3 was applied to calcul...

A new data acquisition system is employed at Zadar, eastern Adriatic coast, to measure local coastal and orographic flows during winter-spring 2004/05. Although different data types and measuring philosophy correspond to sodar and radio sounding, through boundary layer these often well relate to each other. The latter depends on the amount and inte...

The Atmospheric Lagrangian Particle Stochastic (ALPS) dispersion mo-del was created as an experimental student project and tested under ideal-ized and complex atmospheric and topographic conditions. The challenge of the project was to bring current scientific technology to the direct involve-ment of students in the framework of problem based learni...

The Atmospheric Lagrangian Particle Stochastic (ALPS) dispersion model was created as an experimental student project and tested under idealized and complex atmospheric and topographic conditions. The challenge of the project was to bring current scientific technology to the direct involvement of students in the framework of problem based learning...

The aim of this study is to investigate the possibilities of using the numerical weather prediction (NWP) model ALADIN to calculate input parameters, stability and mixing height (MH), for the Gaussian dispersion model. Since dispersion parameters were not a part of the routine model output, the methods for their calculation were tested. The model c...

The movement of air parcels polluted due to an accidental release of H_2S close to the Croatian border is examined. Emission started on November 13, 1998 at around 2330 UTC. Trajectories starting at 0000 UTC were calculated by a dynamic method which provides realistic nonlinear variations of the wind field in space and time. Pressure gradients were...

1 INTRODUCTION So far there have been no advanced air-pollution studies using state-of-the-art dispersion models over the Northern Adriatic coastal region. Several active industrial emission sources such as oil refineries and thermal powerplants are located there, especially near the city of Rijeka. This is a complex terrain area with abrupt change...