@article{PohlHewelingFischeretal.2017, author = {Pohl, T. and Heweling, G. and Fischer, C. and Weber, Konradin}, title = {Traffic Influenced Nitrogen Dioxide, Ultrafine Particle and Black Carbon Concentrations at a Busy Urban Street in Duesseldorf, Germany}, series = {International Journal of Environmental Science}, volume = {2}, journal = {International Journal of Environmental Science}, issn = {2367-8941}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-50355}, pages = {410 -- 417}, year = {2017}, abstract = {In this study the road traffic related air pollution within a busy urban street canyon in the City of Duesseldorf, Germany was investigated. For the investigations the measurement truck of the laboratory for environmental measurement techniques of the HSD was equipped with different measurement devices for gaseous and aerosol species as well as meteorological sensors. The measurement truck was placed next to a stationary air quality measurement container of the Environmental State Agency of North-Rhine-Westphalia (LANUV). The measurement site is located at the Cornelius street, a direct north south connecting street through the city of Duesseldorf, which is highly frequented by road traffic with an daily amount of about 45,000 vehicles. The street is located within the low emission zone (LEZ). Additionally the pass through of vehicles with a higher weight than 7.5 tons is prohibited. Within this study over a period of several weeks the particle mass concentrations PM10, PM2.5 and PM1, and the particle number size distribution (PNSD) were measured over a broad range from 5 nm to 32 µm with a high temporal resolution. Additionally, an aethalometer was used to determine the proportion of black carbon in the particle ensembles. Gaseous pollutants like nitrogen dioxide, ozone and sulphur dioxide were measured as well. Nitrogen dioxide is a typical species originating from combustion processes. In this study the data from NO2 strongly correlate with ultrafine particle and black carbon concentrations and for this reason all three species are clearly influenced by road traffic. However, this effect is not so pronounced for the particle mass concentrations, which are additionally influenced by the varying local background concentrations. During the measurements, the averaged concentration for PM10 was on a moderate level at 20.6 µg/m³ (PM2.5 13.4 µg/m³, PM1 10.7 µg/m³). The averaged NO2 concentration was 54.2 µg/m³ during the measurement period, which is above the yearly limit value of 40 µg/m³. However, the hourly limit value of 200 µg/m³ was not exceeded during the measurement period of this study. The averaged particle number concentration (PNC5-250 nm) and black carbon concentration were on a low level compared with values from other studies at roadsides. The PNC5-250 nm was at 6,400 \#/cm³ and for black carbon at 1.8 µg/m³. The lower values for PNC and BC are possibly explained as a result due to the measures from the clean air plan. The measurements of this study took place in summertime. The air pollution concentrations might be higher during colder times of the year due to domestic fuel burning. After all it can be stated, that the additional monitoring of ultrafine particles and black carbon is relevant and important to characterize the composition of the air quality at roadsides and offer a better understanding for the temporal resolution of air pollutants in cities. Moreover, estimations on the risk of air pollution for the human health can more precisely be specified.}, language = {en} } @article{GeneralPoehlerSihleretal.2014, author = {General, S. and P{\"o}hler, D. and Sihler, H. and Bobrowski, N. and Frieß, U. and Zielcke, J. and Horbanski, M. and Shepson, P. B. and Stirm, B. H. and Simpson, W. R. and Weber, Konradin and Fischer, C. and Platt, U.}, title = {The Heidelberg Airborne Imaging DOAS Instrument (HAIDI) - a novel imaging DOAS device for 2-D and 3-D imaging of trace gases and aerosols}, series = {Atmospheric Measurement Techniques}, volume = {7}, journal = {Atmospheric Measurement Techniques}, number = {10}, publisher = {Copernicus}, issn = {1867-8548}, doi = {10.5194/amt-7-3459-2014}, url = {http://nbn-resolving.de/urn:nbn:de:hbz:due62-opus-50179}, pages = {3459 -- 3485}, year = {2014}, abstract = {Abstract. Many relevant processes in tropospheric chemistry take place on rather small scales (e.g., tens to hundreds of meters) but often influence areas of several square kilometer. Thus, measurements of the involved trace gases with high spatial resolution are of great scientific interest. In order to identify individual sources and sinks and ultimately to improve chemical transport models, we developed a new airborne instrument, which is based on the well established Differential Optical Absorption Spectroscopy (DOAS) method. The Heidelberg Airborne Imaging DOAS Instrument (HAIDI) is a passive imaging DOAS spectrometer, which is capable of recording horizontal and vertical trace gas distributions with a resolution of better than 100 m. Observable species include NO2, HCHO, C2H2O2, H2O, O3, O4, SO2, IO, OClO and BrO. Here we give a technical description of the instrument including its custom-built spectrographs and CCD detectors. Also first results from measurements with the new instrument are presented. These comprise spatial resolved SO2 and BrO in volcanic plumes, mapped at Mt. Etna (Sicily, Italy), NO2 emissions in the metropolitan area of Indianapolis (Indiana, USA) as well as BrO and NO2 distributions measured during arctic springtime in context of the BRomine, Ozone, and Mercury EXperiment (BROMEX) campaign, which was performed 2012 in Barrow (Alaska, USA).}, language = {en} } @inproceedings{FischerPohlWeberetal.2012, author = {Fischer, C. and Pohl, T. and Weber, Konradin and Vogel, A. and van Haren, G. and Schweikert, W.}, title = {TATP stand-off detection with open path: FTIR techniques}, series = {Optics and photonics for counterterrorism, crime fighting and defence VIII : 24 - 26 September 2012, Edinburgh, United Kingdom}, volume = {8546}, booktitle = {Optics and photonics for counterterrorism, crime fighting and defence VIII : 24 - 26 September 2012, Edinburgh, United Kingdom}, editor = {Lewis, Colin and Burgess, Douglas}, publisher = {SPIE}, address = {Bellingham, Wash}, isbn = {978-0-8194-9287-6}, issn = {0277-786X}, doi = {10.1117/12.974592}, year = {2012}, language = {en} } @article{CarapezzaBarberiRanaldietal.2012, author = {Carapezza, M. L. and Barberi, F. and Ranaldi, M. and Ricci, T. and Tarchini, L. and Barrancos, Jos{\´e} and Fischer, C. and Granieri, D. and Lucchetti, C. and Melian, G. and Perez, N. and Tuccimei, P. and Vogel, A. and Weber, Konradin}, title = {Hazardous gas emissions from the flanks of the quiescent Colli Albani volcano (Rome, Italy)}, series = {Applied Geochemistry}, volume = {27}, journal = {Applied Geochemistry}, number = {9}, publisher = {Elsevier}, doi = {10.1016/j.apgeochem.2012.02.012}, pages = {1767 -- 1782}, year = {2012}, language = {en} } @article{CarapezzaBarberiRanaldietal.2011, author = {Carapezza, M. L. and Barberi, F. and Ranaldi, M. and Ricci, T. and Tarchini, L. and Barrancos, Jos{\´e} and Fischer, C. and Perez, N. and Weber, Konradin and Di Piazza, A. and Gattuso, A.}, title = {Diffuse CO2 soil degassing and CO2 and H2S concentrations in air and related hazards at Vulcano Island (Aeolian arc, Italy)}, series = {Journal of Volcanology and Geothermal Research}, volume = {207}, journal = {Journal of Volcanology and Geothermal Research}, number = {3-4}, publisher = {Elsevier}, doi = {10.1016/j.jvolgeores.2011.06.010}, pages = {130 -- 144}, year = {2011}, language = {en} } @article{WeberEliassonVogeletal.2012, author = {Weber, Konradin and Eliasson, J. and Vogel, A. and Fischer, C. and Pohl, T. and van Haren, G. and Meier, M. and Grob{\´e}ty, B. and Dahmann, D.}, title = {Airborne in-situ investigations of the Eyjafjallaj{\"o}kull volcanic ash plume on Iceland and over north-western Germany with light aircrafts and optical particle counters}, series = {Atmospheric Environment}, volume = {48}, journal = {Atmospheric Environment}, publisher = {Elsevier}, issn = {1352-2310}, doi = {10.1016/j.atmosenv.2011.10.030}, pages = {9 -- 21}, year = {2012}, language = {en} } @article{GeneralBobrowskiPoehleretal.2015, author = {General, S. and Bobrowski, N. and P{\"o}hler, D. and Weber, Konradin and Fischer, C. and Platt, U.}, title = {Airborne I-DOAS measurements at Mt. Etna: BrO and OClO evolution in the plume}, series = {Journal of Volcanology and Geothermal Research}, volume = {300}, journal = {Journal of Volcanology and Geothermal Research}, publisher = {Elsevier}, issn = {0377-0273}, doi = {10.1016/j.jvolgeores.2014.05.012}, pages = {175 -- 186}, year = {2015}, language = {en} }