A5030912248- Atmospheric chemistry and aerosols
- Air Quality Monitoring and Forecasting
- Air Quality and Health Impacts
- Atmospheric Ozone and Climate
- Maritime Transport Emissions and Efficiency
- Atmospheric and Environmental Gas Dynamics
- Marine and coastal ecosystems
- Tropical and Extratropical Cyclones Research
- Atmospheric aerosols and clouds
- Oil Spill Detection and Mitigation
- Maritime Navigation and Safety
- Ocean Acidification Effects and Responses
- Water Quality Monitoring and Analysis
- Advanced Chemical Sensor Technologies
- Vehicle emissions and performance
- Meteorological Phenomena and Simulations
- Earthquake Detection and Analysis
- Spacecraft Design and Technology
- Metabolomics and Mass Spectrometry Studies
- High Altitude and Hypoxia
- Wind and Air Flow Studies
- Fluid Dynamics and Turbulent Flows
- Isotope Analysis in Ecology
Max Planck Institute for Chemistry
2019-2025
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 New particle formation (NPF) in the tropical upper troposphere is a globally important source of atmospheric aerosols 1–4 . It known to occur over Amazon basin, but nucleation mechanism and chemical precursors have yet be identified 2 Here we present comprehensive situ aircraft measurements showing that extremely low-volatile oxidation products isoprene, particularly certain organonitrates, drive NPF Amazonian troposphere. The organonitrates originate from OH-initiated isoprene...
Abstract. Volatile organic compounds (VOCs) were measured around the Arabian Peninsula using a research vessel during AQABA campaign (Air Quality and Climate Change in Basin) from June to August 2017. In this study we examine carbonyl compounds, by proton transfer reaction mass spectrometer (PTR-ToF-MS), present both regional concentration distribution budget assessment for these key atmospheric species. Among aliphatic carbonyls, acetone had highest mixing ratios most of regions traversed,...
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. 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. Formaldehyde (HCHO), hydrogen peroxide (H2O2) and organic hydroperoxides (ROOH) play a key role in atmospheric oxidation processes. They act as sources sinks for HOx radicals (OH + HO2), with OH the primary oxidant that governs self-cleaning capacity. Measurements of these species allow evaluation chemistry-transport models which need to account multifarious source distributions, transport, complex photochemical reaction pathways deposition processes species. HCHO is an...
Abstract. This study focuses on the distribution of hydrogen peroxide (H2O2) in upper tropical troposphere at altitudes between 8 and 15 km based situ observations during Chemistry Atmosphere: Field Experiment Africa (CAFE-Africa) campaign conducted August–September 2018 over Atlantic Ocean western Africa. The measured mixing ratios show no clear trend latitudinal with locally increased levels (up to 1 ppbv) within Intertropical Convergence Zone (ITCZ), African coastal area, as well...
Abstract. Measurements of hydroperoxides help improve our understanding atmospheric oxidation processes. Here, we introduce an instrument setup designed for airborne hydroperoxide measurements. The HYdrogen Peroxide and Higher Organic Peroxides (HYPHOP) monitor has been deployed on the German High-Altitude Long-range Observatory (HALO) aircraft is based dual-enzyme fluorescence spectroscopy, enabling measurements up to ambient pressure approximately 150 hPa altitude (13.5–14 km). We...
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. Formaldehyde (HCHO) and hydrogen peroxide (H2O2) play a key role in atmospheric oxidation processes. They act as sources sinks for HOx radicals (OH + HO2), with OH the primary oxidant that governs self-cleaning capacity. Measurements of these species allow evaluation global chemistry-transport models which need to account multifarious source distributions, transport mixing, complex photochemical reaction pathways deposition HCHO is an intermediate produced during VOCs indicator...
Abstract. Measurements of hydroperoxides help improve the understanding atmospheric oxidation processes. We introduce an instrumental setup designed for airborne hydroperoxide measurements. The instrument has been deployed on German High-Altitude and Long-range Observatory (HALO) aircraft. HYdrogen Peroxide Higher Organic Peroxides (HYPHOP) monitor based dual-enzyme fluorescence spectroscopy enables measurements up to ambient pressure approximately 150 hPa altitude (13.5–14 km). main goal...
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....
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 September 2, 2018 after it had developed a rotating nature, wave observed close to African continent August 29, as part research campaign CAFE Africa (Chemistry Atmosphere – Field Experiment Africa) with HALO (High Altitude Long Range) aircraft. We show impact deep convection...
In the tropics, intense solar radiation drives photochemistry and strong convection, transporting air from boundary layer to upper troposphere. Conditions in tropics are characterized by high humidity UV intensity enhancing hydroxyl (OH) radical production. addition, OH radicals ozone (O3) formed through reactions of HOx (OH + HO2) with nitrogen oxides (NOx), latter being produced lightning abundant convective systems. The convection also transports volatile organic compounds (VOCs), notably...
Abstract. We present ship-borne measurements of NOx (≡ NO + NO2) and NOy 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-ringdown-spectrometer (TD-CRDS), were used to examine chemical mechanisms involved processing primary emissions their influence on budget chemically distinct marine environments, including Mediterranean Sea,...
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 travelling around peninsula AQABA (Air...
Abstract. Strongly enhanced tropospheric ozone mixing ratios have been reported in the Arabian Basin, a region with intense solar radiation and high concentrations of precursors such as nitrogen oxides volatile organic compounds. To analyze photochemical production marine boundary layer (MBL) around Peninsula, we use ship-borne observations NO, NO2, O3, OH, HO2, HCHO, actinic flux, water vapor, pressure temperature obtained during summer 2017 Air Quality Climate Basin (AQABA) campaign,...
Abstract. Volatile organic compounds (VOCs) were measured around the Arabian Peninsula using a research vessel during AQABA campaign (Air Quality and Climate Change in Basin) from June to August 2017. In this study we examine carbonyl (CxHyO), by proton transfer reaction mass spectrometer (PTR-ToF-MS), present both regional concentration distribution budget assessment for these key atmospheric species. Among aliphatic carbonyls, acetone had highest mixing ratios most of regions traversed,...
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)), obtained during Air Quality Climate Change Arabian Basin (AQABA) campaign...
Abstract. This study focuses on the distribution of hydrogen peroxide (H2O2) in upper tropical troposphere at altitudes between 8 and 15 km based situ observations during Chemistry Atmosphere – Field Experiment Africa (CAFE-Africa) campaign conducted August–September 2018 over Atlantic Ocean western Africa. The measured mixing ratios show a nearly uniform latitudinal with locally increased levels (up to 1 ppbv) within Intertropical Convergence Zone (ITCZ), African coastal area, as well...