TY - CHAP A1 - Weber, Konradin A1 - Pohl, Tobias A1 - Fischer, Christian A1 - Lange, Martin A1 - Böhlke, Christoph ED - Valeri, Mladenov T1 - Determination of a Vertical Profile of Black Carbon by a Combined Application of a Light Research Aircraft and a Quadcopter Unmanned Aerial Vehicle – A Case Study Using an Airborne Ultraportable Micro-Aethalometer for Black Carbon Measurements at a Rural Site in Germany T2 - Recent Researches in Electrical and Computer Engineering KW - Luftreinhaltung KW - Messtechnik KW - Atmosphärisches Aerosol KW - Ruß Y1 - 2015 SN - 978-1-61804-315-3 SN - 1790-5117 VL - Recent Advances in Electrical Engineering Series 49 SP - 13 EP - 18 PB - WSEAS ER - TY - CHAP A1 - Weber, Konradin A1 - Fischer, Christian A1 - Lange, Martin A1 - Pohl, Tobias A1 - Böhlke, Christoph A1 - Wagner, Frank A1 - Mattis, Ina A1 - Flentje, Harald A1 - Sturm, Klaus A1 - Barth, Joachim A1 - Steinkopff, Thomas A1 - Vogel, Andreas T1 - Aircraft measurements compared with ceilometer measurements during a sahara dust period in Germany T2 - Geophysical Research Abstracts: EGU General Assembly 2015 N2 - A significant Sahara dust event took place at the beginning of April 2014 over large areas of Germany and Europe. The German Weather Service (DWD) detected and monitored the expansion and propagation of this dust cloud with a ceilometer network of more than 50 ceilometers. Moreover, these ceilometers were also able to track the altitude of the dust cloud at the positions of the ceilometers. Additionally, aircraft measurements over Germany and France were performed with two aircraft by the Duesseldorf University of Applied Sciences. These aircraft were equipped with optical particle counters (OPC) and were able to measure the particle size distribution within the Sahara dust cloud and as a result of this to calculate the particle mass concentration of the dust. The ceilometer measurements and the aircraft measurements complemented each other: whereas the ceilometers gave continuous information about the Sahara dust cloud at the ceilometer positions, the aircraft measurements delivered interpolating results between the ceilometer positions. Moreover, at several ceilometer positions intercomparison flights were performed by spiraling with the aircraft up or down around the ceilometer laser beam. This gave the unique possibility for comparing the remote sensing results of the ceilometers with the in-situ measurements of the aircraft. This study shows that a significant high amount of Saharan dust particles was transported over Germany during a several days long episode. Furthermore, the intercomparison study between the German ceilometer network and aircraft measurements results shows a good agreement. A combination of these techniques could help to detect the vertical and horizontal distribution of the dust cloud and additionally the particle mass concentration. KW - Luftreinhaltung KW - Deutscher Wetterdienst KW - Forschungsflugzeug KW - Messtechnik KW - Atmosphärisches Aerosol KW - Saharastaub Y1 - 2015 UR - https://web.archive.org/web/20250314100317/https://meetingorganizer.copernicus.org/EGU2015/EGU2015-9776.pdf N1 - Vortragsabstract VL - 17 PB - Copernicus CY - Göttingen ER - TY - CHAP A1 - Weber, Konradin A1 - Kramer, Tim A1 - Fischer, Christian A1 - Pohl, Tobias A1 - Böhlke, Christoph T1 - Application and Feld-Testing of Different Low Cost Sensors for Particulate Matter T2 - European Aerosol Conference 2019, 25.-30. August 2019, Gothenburg, Sweden KW - Luftreinhaltung KW - Messtechnik KW - Sensor KW - Teilchen Y1 - 2019 UR - https://www5.shocklogic.com/scripts/jmevent/programme.php?Client_Id=%27KONGRESS%27&Project_Id=%2719371%27&System_Id=1# ER - TY - CHAP A1 - Vogel, Andreas A1 - Weber, Konradin A1 - Fischer, Christian A1 - van Haren, Günther A1 - Pohl, Tobias A1 - Grobety, Bernhard A1 - Meier, Mario T1 - Airborne in-situ measurements of the Eyjafjallojökull ash plume with a small aircraft and optical particle spectrometers over north-western Germany - comparison between the aircraft measurements and the VAAC-model calculations T2 - Geophysical Research Abstracts: EGU General Assembly 2011 N2 - The eruption of the volcano Eyjafjallajökull (Iceland) in 2010 has caused a transportation of an ash dust plume over large areas of Europe. In April 2010 many airports in Europe were closed for several days because of the volcano ash plume and even in May 2010 several German and European airports were closed for shorter periods because of the danger caused by the volcanic ash dust. The VAAC (Volcanic Ash Advisory Center), London, has continuously published graphics of the predicted spread and dispersion of the volcanic ash plume, which were partly basis for the air traffic restrictions in Germany. In this situation the Laboratory for Environmental Measurement Techniques of the University of Applied Sciences in Duesseldorf has performed 14 measurement flights starting from April 23 2010 to May 21 2010 to get real airborne in-situ dust measurement data over the north-western part of Germany and for comparison with the predicted ash dispersion model data of the VAAC of London in Germany. Moreover, airborne passive DOAS remote sensing measurements have been performed by a mini-DOAS system for SO2-measurements within the plume. In this paper the results of the airborne optical ash particle measurements as well as the remote sensing SO2 measurements will be reported for situations with and without the volcanic plume over northern Germany in detail. Moreover, the measured dust data will be compared with the model dispersion predictions for the ash plume by the VAAC and with European limit concentrations. Main conclusions are: The „ash plume“, found by the aircraft measurement of the Duesseldorf University of Applied Sciences over north western Germany in the “red zone” predicted by the VAAC turned out to be inhomogeneous during the measurement flights Clusters of ash plume sometimes had only a height extension of several hundred meters or less Ash substructures with a horizontal extension of ten kilometres up to several tenth of kilometres could be found Vertical double structures of ash plume could be measured by spiral flights and could be observed visually in horizontal direction Ash plume could be observed visually as small brown layer in horizontal direction Particles collected during flight could be identified as ash particles by electron microscope analysis and chemical analysis KW - Luftreinhaltung KW - Vulkanasche KW - Atmosphärisches Aerosol KW - Eyjafjallajökull KW - Messtechnik Y1 - 2011 VL - 13 PB - Copernicus CY - Göttingen ER - TY - JOUR A1 - Henin, Stefano A1 - Petit, Yannick A1 - Rohwetter, Philipp A1 - Stelmaszczyk, Kamil A1 - Hao, Zuoqiang A1 - Nakaema, Walter Morinobu A1 - Vogel, Andreas A1 - Pohl, Tobias A1 - Schneider, Friedhelm A1 - Kasparian, Jérôme A1 - Weber, Konradin A1 - Wöste, Ludger A1 - Wolf, Jean-Pierre T1 - Field measurements suggest the mechanism of laser-assisted water condensation JF - Nature Communications N2 - Because of the potential impact on agriculture and other key human activities, efforts have been dedicated to the local control of precipitation. The most common approach consists of dispersing small particles of dry ice, silver iodide, or other salts in the atmosphere. Here we show, using field experiments conducted under various atmospheric conditions, that laser filaments can induce water condensation and fast droplet growth up to several μm in diameter in the atmosphere as soon as the relative humidity exceeds 70%. We propose that this effect relies mainly on photochemical formation of p.p.m.-range concentrations of hygroscopic Hno3, allowing efficient binary Hno3–H2o condensation in the laser filaments. Thermodynamic, as well as kinetic, numerical modelling based on this scenario semiquantitatively reproduces the experimental results, suggesting that particle stabilization by Hno3 has a substantial role in the laser-induced condensation. KW - Luftreinhaltung KW - Kondensation KW - Laser KW - Niederschlag Y1 - 2011 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-52439 SN - 2041-1723 VL - 2 IS - 1 PB - Springer Nature ER - TY - CHAP A1 - Stähler, Lisa A1 - Weyers, Simone A1 - Hoffmann, Barbara A1 - Soppa, Vanessa A1 - Oberwinster, Lukas A1 - Weber, Konradin A1 - Pohl, Tobias A1 - Kuß, Oliver A1 - Lang, Alexander A1 - Pischke, Claudia T1 - UNITY: Multistrategische Intervention zur Förderung von Radmobilität, Gesundheit und Nachhaltigkeit im Rahmen der Stadtentwicklung Düsseldorf [Vortragsabstract] T2 - 60. Jahrestagung der Deutschen Gesellschaft für Sozialmedizin und Prävention (DGSMP) Teilhabe und Ko-Kreation, 17. - 19. September 2025, Berlin KW - Luftreinhaltung KW - Stadtplanung KW - Stadtentwicklung KW - Sozialraum KW - Düsseldorf KW - Radfahrerverkehr KW - Radweg KW - Nachhaltigkeit KW - Soziale Ungleichheit KW - Gesundheitsförderung KW - Luftverschmutzung KW - Abgasemission Y1 - 2025 UR - https://access.online-registry.net/dgsmp2025/temp/export/exp_1752729278305_8146.pdf ER - TY - JOUR A1 - Weber, Konradin A1 - Fischer, Christian A1 - Pohl, Tobias A1 - Böhlke, Christoph A1 - Lange, Martin A1 - Scharifi, Emad A1 - Eliasson, Jonas A1 - Yoshitani, Junichi T1 - The Application of Light Research Aircraft for the Investigation of Volcano Eruption Plumes, Industrial Emissions and Urban Plumes JF - WSEAS Transactions on Environment and Development N2 - Airborne measurements have proved to be an important tool for the investigation of volcanic emission plumes, industrial pollution plumes, fugitive emissions and urban pollution plumes. In this paper several examples are demonstrated, how these investigations can be performed by light and microlight propeller aircraft. Throughout the last years innovative aircraft were developed in the light and microlight class showing an excellent flight performance. This enables airborne measurements, which were performed in former years normally by big jet engine driven research aircraft. Moreover, these light and microlight aircraft are equipped with piston motors, which are sturdy enough to operate even in adverse and harsh flight conditions, e.g. in volcanic plumes with high ash concentration. Additionally, turbo charged versions of these airborne piston motors are available, which allow flight altitudes of 7000m – 9000m enabling a large variety of research missions. Another advantage of light and microlight research aircraft is that they are quite cost effective and have a comparatively short certification process for the installation of new measurement equipment. This made it possible to respond fast to the eruption of the Icelandic volcano Eyjafjallajökull 2010 and Grimsvötn 2011 with research flights in volcanic ash plumes over Germany and Iceland. In this way it was possible to deliver real airborne measurements additional to the ash plume model calculations of the London Volcanic Ash Advisory Center (VAAC). In this paper examples of airborne measurements in the volcanic plumes of the recent eruptions of Icelandic volcanoes are given. Moreover examples are presented, which highlight the outstanding capabilities of these aircraft for pinpointing industrial emissions and for characterizing urban pollution plumes. KW - Luftreinhaltung KW - Vulkanismus KW - Vulkanasche KW - Forschungsflugzeug KW - Leichtflugzeug KW - Messtechnik Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-50892 SN - 2224-3496 N1 - Open Access Statement: "This is an open access journal which means that all content is freely available without charge to the user or his/her institution. Users are allowed to read, download, copy, distribute, print, search, deposit to institutional repositories or link to the full texts of the articles, or use them for any other lawful purpose, without asking prior permission from the publisher or the author. This is in accordance with the BOAI definition of open access." https://wseas.com/open-access-statement.php VL - 11 SP - 89 EP - 94 PB - WSEAS ER - TY - JOUR A1 - Pohl, Tobias A1 - Fischer, Christian A1 - Heweling, Georg A1 - Böhlke, Christoph A1 - Weber, Konradin T1 - A Comparative Study as a Quality Assurance of Stationary and Portable Hand-Held Ultrafine Particle Monitors JF - WSEAS Transactions on Environment and Development N2 - In this study we investigated the performance of two portable hand-held measurement devices (Testo DiSCMini, Grimm NanoCheck) under real environmental conditions at an area on the new campus of the University of Applied Sciences Duesseldorf, which was influenced by construction activities and traffic. The values were compared to the data from a freshly calibrated SMPS (Grimm SMPS+C) as a reference system. The SMPS measured the particle number concentration as well as the particle number size distribution in a range from 5 nm to 350 nm. This was done as a quality assurance for the use of these portable devices for other measurement campaigns for detecting the particle number concentration in mobile applications by e.g. unmanned aerial systems, bicycles, or small aircraft. The results show a good correlation between all the systems. The agreement between the reference system and the NanoCheck was really good, but lower between the DiSCMini and the reference system. Due to the good correlation the data could be post processed with a correction function to reduce the deviation. Finally, it can be stated, that both systems work well under environmental conditions and are well suited for the mobile use for the investigation of ultrafine particle concentration. KW - Luftreinhaltung KW - Messtechnik KW - Feinstaub Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-50799 SN - 2224-3496 N1 - Open Access Statement: "This is an open access journal which means that all content is freely available without charge to the user or his/her institution. Users are allowed to read, download, copy, distribute, print, search, deposit to institutional repositories or link to the full texts of the articles, or use them for any other lawful purpose, without asking prior permission from the publisher or the author. This is in accordance with the BOAI definition of open access." https://wseas.com/open-access-statement.php VL - 13 PB - WSEAS ER - TY - RPRT A1 - Oliveira Brito, Marcel A1 - Pohl, Tobias A1 - Nehr, Sascha T1 - Sicheres Schadstoffmonitoring per UAV in Gefahrenszenarien für Einsatzkräfte (SiSchaMo): Erforschung eines modularen Sensorsystems zur dreidimensionalen Erfassung und Charakterisierung von Gefahrstoffwolken mittels UAV in-situ Messungen ; Abschlussbericht zum Teilvorhaben KW - Brandaerosol KW - Gefahrenszenarien KW - UAV KW - Drohne KW - Luftreinhaltung KW - Messtechnik KW - Sensortechnik KW - Brand KW - Luftverschmutzung KW - Gefahrstoff KW - Schadgas KW - Arbeitssicherheit KW - Zivilschutz Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-55799 PB - Technische Informationsbibliothek CY - Hannover ER - TY - CHAP A1 - Stähler, Lisa A1 - Weyers, Simone A1 - Hoffmann, Barbara A1 - Soppa, Vanessa A1 - Oberwinster, Lukas A1 - Nehr, Sascha A1 - Pohl, Tobias A1 - Kuß, Oliver A1 - Lang, Alexander A1 - Pischke, Claudia T1 - UNITY: Multistrategische Intervention zur Förderung von Radmobilität, Gesundheit und Nachhaltigkeit im Rahmen der Stadtentwicklung Düsseldorf – Teilprojekt 1 [Poster] T2 - 60. Jahrestagung der Deutschen Gesellschaft für Sozialmedizin und Prävention (DGSMP) Teilhabe und Ko-Kreation, 17. - 19. September 2025, Berlin KW - Stadtplanung KW - Stadtentwicklung KW - Düsseldorf KW - Radfahrerverkehr KW - Radweg KW - Luftreinhaltung KW - Nachhaltigkeit KW - Gesundheitsförderung KW - Luftverschmutzung KW - Abgasemission Y1 - 2025 UR - https://access.online-registry.net/dgsmp2025/temp/export/exp_1752504489018_370c.pdf ER - TY - CHAP A1 - Soppa, Vanessa A1 - Oberwinster, Lukas A1 - Pischke, Claudia A1 - Stähler, Lisa A1 - Weyers, Simone A1 - Nehr, Sascha A1 - Pohl, Tobias A1 - Kuß, Oliver A1 - Lang, Alexander A1 - Hoffmann, Barbara T1 - UNITY: Multistrategische Intervention zur Förderung von Radmobilität, Gesundheit und Nachhaltigkeit im Rahmen der Stadtentwicklung Düsseldorf – Teilprojekt 2 [Poster] T2 - 60. Jahrestagung der Deutschen Gesellschaft für Sozialmedizin und Prävention (DGSMP) Teilhabe und Ko-Kreation, 17. - 19. September 2025, Berlin KW - Luftreinhaltung Y1 - 2025 UR - https://access.online-registry.net/dgsmp2025/temp/export/exp_1752575784960_72bd.pdf ER - TY - JOUR A1 - Bergmann, Marie A1 - Haddad-Thoelke, Pascale A1 - Jeong, Haeran A1 - Kappeler, Ron A1 - Altug, Hicran A1 - Oberwinster, Lukas A1 - Boogaard, Hanna A1 - Pohl, Tobias A1 - Soppa, Vanessa A1 - Ogurtsova, Katherine A1 - Joss, Meltem Kutlar A1 - Andersen, Zorana Jovanovic A1 - Hoffmann, Barbara T1 - Systematic review and meta-analysis on the health effects of long-term exposure to ultrafine particles JF - European Respiratory Review N2 - Background Ultrafine particles (≤100 nm diameter) may have a higher toxicity than larger particles but are still not regulated nor part of routine air pollution monitoring. So far, health effects of long-term exposure to ambient ultrafine particles are not well understood, owing to a lack of exposure data and epidemiological studies. Methods We conducted a systematic review and meta-analysis on the health effects of long-term exposure to ultrafine particles, including studies published until December 2024. A meta-analysis was conducted for outcomes with at least four available effect estimates. Confidence in the body of evidence was evaluated using the Office of Health Assessment and Translation method. Results We identified 85 studies investigating various mortality, morbidity and subclinical outcomes. In meta-analyses of single-pollutant models, we found positive associations with natural mortality (hazard ratio 1.06, 95% CI 1.04–1.08) and C-reactive protein (10.14% increase (95% CI −0.51–21.99%) per 10 000 pt·cm−3 increase in long-term exposure to ultrafine particles, with low and inadequate levels of evidence, respectively. The remaining studies revealed overall limited evidence for adverse effects on a wide range of outcomes. Less than half of the studies adjusted for co-pollutants. Conclusion The evidence base on long-term health effects of ultrafine particles has increased substantially in the past decade, while the overall evidence for independent effects of long-term ultrafine particle exposure remains inadequate to low. More studies are needed to draw firm conclusions about the independent adverse effects of long-term ultrafine particles on various health end-points, with a special focus on the influence of co-pollutant adjustment. KW - Luftreinhaltung KW - Schadstoffbelastung KW - Luftverunreinigender Stoff KW - Feinstaub KW - Auswirkung Y1 - 2026 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-60272 SN - 1600-0617 VL - 35 IS - 179 PB - European Respiratory Society ER -