A5014075447- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Air Quality Monitoring and Forecasting
- Air Quality and Health Impacts
- Maritime Transport Emissions and Efficiency
- Atmospheric and Environmental Gas Dynamics
- COVID-19 impact on air quality
- Atmospheric aerosols and clouds
- Ocean Acidification Effects and Responses
- Spectroscopy and Laser Applications
- Gas Sensing Nanomaterials and Sensors
- Oil Spill Detection and Mitigation
- Vehicle emissions and performance
- Tropical and Extratropical Cyclones Research
- Toxic Organic Pollutants Impact
- Meteorological Phenomena and Simulations
- Earthquake Detection and Analysis
- Marine and coastal ecosystems
- Water Quality Monitoring and Analysis
- Laser Design and Applications
- Wind and Air Flow Studies
- Climate Change and Health Impacts
- Fluid Dynamics and Turbulent Flows
- Maritime Navigation and Safety
- Advanced Chemical Sensor Technologies
Max Planck Institute for Chemistry
2017-2025
Catholic University of Croatia
2008
University of Split
2008
Abstract During spring 2020, the COVID-19 pandemic caused massive reductions in emissions from industry and ground airborne transportation. To explore resulting atmospheric composition changes, we conducted BLUESKY campaign with two research aircraft measured trace gases, aerosols, cloud properties boundary layer to lower stratosphere. From 16 May 9 June performed 20 flights early lockdown phase over Europe Atlantic Ocean. We found up 50% nitrogen dioxide concentrations urban areas GOME-2B...
Abstract. Strongly enhanced tropospheric ozone (O3) mixing ratios have been reported in the Arabian Basin, a region with intense solar radiation and high concentrations of O3 precursors such as nitrogen oxides (NOx) volatile organic compounds (VOCs). To analyze photochemical production marine boundary layer (MBL) around Peninsula, we use shipborne observations NO, NO2, O3, OH, HO2, HCHO, actinic flux, water vapor, pressure temperature obtained during summer 2017 Air Quality Climate Basin...
Abstract. The Arabian Peninsula is characterized by high and increasing levels of photochemical air pollution. Strong solar irradiation, temperatures large anthropogenic emissions reactive trace gases result in intense activity, especially during the summer months. However, chemistry measurements region are scarce. In order to assess regional pollution sources oxidation rates, first ship-based direct total OH reactivity were performed 2017 from a vessel traveling around peninsula AQABA (Air...
Abstract. A total of 252 emission plumes ships operating in the Mediterranean Sea and around Arabian Peninsula were investigated using a comprehensive dataset gas- submicron-particle-phase properties measured during 2-month shipborne AQABA (Air Quality Climate Change Basin) field campaign summer 2017. The post-measurement identification corresponding ship events data included determination plume sources (up to 38 km away) as well ages 115 min) was based on commercially available historical...
Abstract In the Middle East, desert dust is assumed to dominate air pollution, being in permanent violation of public health guidelines. Here we present ship-borne measurements from around Arabian Peninsula and modeling results show that hazardous fine particulate matter a large extent anthropogenic origin (>90%), distinct less harmful, coarse particles. Conventionally, it was understood dominates both aerosol size fractions, which obscures signal. We find annual excess mortality exposure...
Abstract. Shipborne measurements of nitryl chloride (ClNO2), hydrogen (HCl) and sulfur dioxide (SO2) were made during the AQABA (Air Quality climate change in Arabian BAsin) ship campaign summer 2017. The dataset includes over Mediterranean Sea, Suez Canal, Red Gulf Aden, Oman, (also known as Persian Gulf) with observed ClNO2 mixing ratios ranging from limit detection to ≈600 pptv. We examined regional variability generation via uptake dinitrogen pentoxide (N2O5) Cl-containing aerosol its...
Non-methane hydrocarbons (NMHCs) such as ethane and propane are significant atmospheric pollutants precursors of tropospheric ozone, while the Middle East is a global emission hotspot due to extensive oil gas production. Here we compare in situ hydrocarbon measurements, performed around Arabian Peninsula, with model simulations that include current inventories (EDGAR) state-of-the-art circulation chemistry mechanisms (EMAC model). While measurements high mixing ratios over Gulf adequately...
Abstract. Polycyclic aromatic hydrocarbons (PAHs) and their alkylated (RPAHs), nitrated (NPAHs) oxygenated (OPAHs) derivatives are air pollutants. Many of these substances long-lived, can undergo long-range atmospheric transport adversely affect human health upon exposure. However, the occurrence fate pollutants have hardly been studied in marine atmosphere. In this study, we report concentrations over Mediterranean Sea, Red Arabian Gulf Oman Gulf, determined during AQABA (Air Quality...
Abstract. Aerosols influence the Earth's energy balance directly by modifying radiation transfer and indirectly altering cloud microphysics. Anthropogenic aerosol emissions dropped considerably when global COVID-19 pandemic resulted in severe restraints on mobility, production, public life spring 2020. We assess effects of these reduced direct indirect radiative forcing over Europe, excluding contributions from contrails. simulate atmospheric composition with ECHAM5/MESSy Atmospheric...
Abstract. We present shipborne measurements of NOx (≡ NO + NO2) and NOy NOx+ gas- particle-phase organic inorganic oxides nitrogen) in summer 2017 as part the expedition “Air Quality climate change Arabian BAsin” (AQABA). The NOz NOy-NOx) measurements, made with a thermal dissociation cavity ring-down spectrometer (TD-CRDS), were used to examine chemical mechanisms involved processing primary emissions their influence on budget chemically distinct marine environments, including Mediterranean...
Abstract. Mechanisms of tropospheric ozone (O3) formation are generally well understood. However, studies reporting on net production rates (NOPRs) directly derived from in situ observations challenging and sparse number. To analyze the role nitric oxide (NO) upper tropical troposphere above Atlantic Ocean western Africa, we present trace gas obtained during CAFE-Africa (Chemistry Atmosphere: Field Experiment Africa) campaign August September 2018. The vertical profile measured NO along...
Abstract. The increase of atmospheric methane (CH4) and carbon dioxide (CO2), two the main anthropogenic greenhouse gases, is largely driven by fossil sources. Sources sinks remain insufficiently characterized in Mediterranean Middle East areas, where very few situ measurements are available. We measured mixing ratios CH4 CO2 ship region July August 2017. High were observed over Suez Canal, Red Sea Arabian Gulf, while generally lower Gulf Aden Oman. probe origin excess ratio using...
Abstract. The COVID-19 (coronavirus disease 2019) European lockdowns have led to a significant reduction in the emissions of primary pollutants such as NO (nitric oxide) and NO2 (nitrogen dioxide). As most photochemical processes are related nitrogen oxide (NOx≡ + NO2) chemistry, this event has presented an exceptional opportunity investigate its effects on air quality secondary pollutants, tropospheric ozone (O3). In study, we present lockdown atmospheric trace gas concentrations, net...
PAN is an important reservoir of reactive nitrogen above the over North and tropical Atlantic Ocean west Africa. In aged biomass-burning plumes (red data) PAN/(NO X + PAN) ratio close to 1 at altitudes where thermally stable.
Abstract. We present a newly constructed, two-channel thermal dissociation cavity ring-down spectrometer (TD-CRDS) for the measurement of NOx (NO+NO2), NOy (NOx+HNO3+RO2NO2+2N2O5 etc.), NOz (NOy−NOx) and particulate nitrate (pNit). NOy-containing trace gases are detected as NO2 by CRDS at 405 nm following sampling through inlets ambient temperature (NOx) or 850 ∘C (NOy). In both cases, O3 was added to air sample directly upstream cavities convert NO (either formed in oven) NO2. An activated...
Abstract. Nitrogen oxides (NOx≡NO+NO2) are centrally involved in the photochemical processes taking place Earth's atmosphere. Measurements of NO2, particularly remote areas where concentrations order parts per trillion by volume (pptv), still a challenge and subject to extensive research. In this study, we present NO2 measurements via photolysis–chemiluminescence during research aircraft campaign CAFE Africa (Chemistry Atmosphere – Field Experiment Africa) 2018 around Cabo Verde results...
Abstract. Aerosols influence the Earth’s energy balance through direct radiative effects and indirectly by altering cloud micro-physics. Anthropogenic aerosol emissions dropped considerably when global COVID–19 pandemic resulted in severe restraints on mobility, production, public life spring 2020. Here we assess of these reduced indirect forcing over Europe, excluding contributions from contrails. We simulate atmospheric com- position with ECHAM5/MESSy Atmospheric Chemistry (EMAC) model a...
Abstract. Hurricane Florence was the sixth named storm in Atlantic hurricane season 2018. It caused dozens of deaths and major economic damage. In this study, we present situ observations trace gases within tropical on 2 September 2018, after it had developed a rotating nature, wave observed close to African continent 29 August 2018 as part research campaign CAFE Africa (Chemistry Atmosphere: Field Experiment Africa) with HALO (High Altitude LOng Range Research Aircraft). We show impact deep...
Abstract. The COVID-19 (Coronavirus disease 2019) European lockdowns have lead to a significant reduction in the emissions of primary pollutants such as NO (nitric oxide) and NO2 (nitrogen dioxide). As most photochemical processes are related nitrogen oxide (NOx ≡ + NO2) chemistry, this event has presented an exceptional opportunity investigate its effects on air quality secondary pollutants, tropospheric ozone (O3). In study, we present lockdown atmospheric trace gas concentrations, net...
Abstract Tropospheric ozone (O 3 ) is an important greenhouse gas that also hazardous to human health. The formation of O sensitive the levels its precursors NO x (≡NO + 2 and peroxy radicals, for example, generated by oxidation volatile organic compounds (VOCs). A better understanding this sensitivity will show how changes in these trace gases could affect today future, thus air quality climate. In study, we investigate tropical troposphere based on situ observations NO, HO from four...
Abstract. The increase of atmospheric methane (CH4) and carbon dioxide (CO2), two main anthropogenic greenhouse gases, is largely driven by fossil sources. Sources sinks remain insufficiently characterised in the Mediterranean Middle East areas, where very few situ measurements area available. We investigated distribution CH4 CO2 region through shipborne measurement July August 2017. High mixing ratios were observed over Suez Canal, Red Sea Arabian Gulf, while generally lower Gulfs Aden...
Abstract. Formaldehyde (HCHO) is the most abundant aldehyde in troposphere. While its background mixing ratio mostly determined by oxidation of methane, many environments, especially boundary layer, HCHO can have a large variety precursors, particular biogenic and anthropogenic volatile organic compounds (VOCs) their products. Here we present shipborne observations HCHO, hydroxyl radical (OH) OH reactivity (R(OH)), which were obtained during Air Quality Climate Change Arabian Basin (AQABA)...
Abstract. 252 emission plumes of ships operating in the Mediterranean Sea and around Arabian Peninsula were investigated using a comprehensive dataset gas submicron particle phase properties measured during two-month shipborne AQABA field campaign summer 2017. The post-measurement identification corresponding ship events data included determination plume sources (up to 38 km away) as well ages 115 min) was based on commercially available historical records Automatic Identification System....