@article{EliassonYasudaWeberetal.2014, author = {Eliasson, Jonas and Yasuda, Nario and Weber, Konradin and Vogel, Andreas and Palsson, Thorgeir}, title = {The role of in-situ measurements of volcanic ash concentrations in preventing economic disasters due to volcanic ash clouds}, series = {Journal of Integrated Disaster Risk Management}, volume = {4}, journal = {Journal of Integrated Disaster Risk Management}, number = {1}, publisher = {Journal of Integrated Disaster Risk Management}, issn = {2185-8322}, doi = {10.5595/idrim.2014.0092}, pages = {48 -- 60}, year = {2014}, language = {en} } @inproceedings{WeberVogelReichardtetal.2012, author = {Weber, Konradin and Vogel, Andreas and Reichardt, Roland and Zimmermann, Thomas}, title = {Research aircraft flight for gas leakage investigation at the Elgin wellhead gas platform in the North Sea - initial results}, series = {Recent Researches in Environmental and Geological Sciences}, booktitle = {Recent Researches in Environmental and Geological Sciences}, editor = {Altawell, Najib and Konstantin, Volkov and Cristina, Matos and Fernandez de Arroyabe, Pablo}, publisher = {WSEAS}, pages = {240 -- 243}, year = {2012}, subject = {Forschungsflugzeug}, language = {en} } @inproceedings{VogelWeberFischeretal.2012, author = {Vogel, Andreas and Weber, Konradin and Fischer, Christian and Prata, A. J. and Durant, A. J.}, title = {Aircraft in situ and remote sensing measurements of emissions from Etna volcano, Sicily}, series = {Geophysical Research Abstracts: EGU General Assembly 2012}, booktitle = {Geophysical Research Abstracts: EGU General Assembly 2012}, publisher = {Copernicus}, address = {G{\"o}ttingen}, year = {2012}, abstract = {Volcanoes emit particles (silicates and sulphate aerosol) and gases (e.g., water and sulphur dioxide) which influence the radiative balance of the atmosphere. The rate at which sulphur dioxide oxidises to sulphate aerosol is poorly constrained and measurements of downwind abundance are required to quantify the rate at which this process occurs. During July and November 2011, a series of measurements were performed in emissions from Etna Volcano, Sicily, using the University of Applied Sciences (Dusseldorf) research aircraft. Both in situ and remote sensing instrumentation was simultaneously deployed to quantify the down-wind characteristics of gases and particles in the plume emitted by the volcano. In situ particle characteristics were measured using a Grimm 1.109 optical particle counter (microparticles 0.25-32 microns) and Grimm 1320 diffusion electrometer (nanoparticles 25-300 nanometers). Column abundance of sulphur dioxide was measured using a vertically-pointing differential optical absorption spectrometer (DOAS). These measurements were compared to horizontal pathlength-integrated measurements of sulphur dioxide from the Airborne Volcanic Imaging Object Detector (AVOID). Down-wind plume dispersion was discriminated through a series of aircraft transects below and through the volcanic plume. The emissions contained large amounts of nanoparticles relative to microparticles, which reflects gas-phase nucleation of sulphate aerosol. The AVOID system discriminated horizontal layering of volcanic aerosol at altitudes of up to 12,000 ft from a detection range of >50 km. Plume boundaries were discriminated using a combination of the in situ and DOAS measurements in order to compare to the pathlength-integrated measurements from AVOID.}, subject = {Forschungsflugzeug}, language = {en} } @inproceedings{WeberWeitkamp1994, author = {Weber, Konradin and Weitkamp, C.}, title = {Standardisierung auf dem Gebiet der optischen Fernmeßverfahren in Deutschland}, series = {Laser in der Umweltmeßtechnik / Laser in Remote Sensing: Vortr{\"a}ge des 11. Internationalen Kongresses / Proceedings of the 11th International Congress}, booktitle = {Laser in der Umweltmeßtechnik / Laser in Remote Sensing: Vortr{\"a}ge des 11. Internationalen Kongresses / Proceedings of the 11th International Congress}, editor = {Werner, Christian and Waidelich, Wilhelm}, publisher = {Springer Nature}, address = {Berlin, Heidelberg}, isbn = {9783540574439}, doi = {10.1007/978-3-662-08252-2_33}, pages = {201 -- 205}, year = {1994}, subject = {Telemetrie}, language = {de} } @inproceedings{LampWeberWeidemannetal.1994, author = {Lamp, Torsten and Weber, Konradin and Weidemann, Johannes and van Haren, Guenther}, title = {Application of FTIR spectroscopy to open-path measurements at industrial sites in Germany}, series = {SPIE Proceedings, Optical Sensing for Environmental and Process Monitoring}, volume = {2365}, booktitle = {SPIE Proceedings, Optical Sensing for Environmental and Process Monitoring}, editor = {Simpson, Orman A.}, publisher = {SPIE}, issn = {0277-786X}, doi = {10.1117/12.210782}, pages = {6 -- 14}, year = {1994}, subject = {FT-IR-Spektroskopie}, language = {en} } @inproceedings{WeberWeidemannvanHarenetal.1995, author = {Weber, Konradin and Weidemann, Johannes and van Haren, Guenther and Lamp, Torsten}, title = {Open-path FTIR measurements at an urban area in Germany}, series = {SPIE Proceedings, Optical Sensing for Environmental and Process Monitoring}, volume = {2365}, booktitle = {SPIE Proceedings, Optical Sensing for Environmental and Process Monitoring}, editor = {Simpson, Orman A.}, publisher = {SPIE}, issn = {0277-786X}, doi = {10.1117/12.210818}, pages = {37 -- 46}, year = {1995}, subject = {FT-IR-Spektroskopie}, language = {en} } @article{KuttlerLampWeber2002, author = {Kuttler, Wilhelm and Lamp, Torsten and Weber, Konradin}, title = {Summer air quality over an artificial lake}, series = {Atmospheric Environment}, volume = {36}, journal = {Atmospheric Environment}, number = {39-40}, publisher = {Elsevier}, issn = {1352-2310}, doi = {10.1016/S1352-2310(02)00776-8}, pages = {5927 -- 5936}, year = {2002}, subject = {Luftqualit{\"a}t}, language = {en} } @inproceedings{WeidauerEickelLahmannetal.1998, author = {Weidauer, Derk and Eickel, Karl-Heinz and Lahmann, Wilhelm and Nikowa, Ljuba and Ulbricht, Matthias and Weber, Konradin and Weitkamp, Claus and Wolf, Jean-Pierre}, title = {Standardization of DAS lidar measurements}, series = {Nineteenth International Laser RadarConference}, booktitle = {Nineteenth International Laser RadarConference}, editor = {Singh, Upendra N. and Syed, Ismail and Geary K., Schwemmer}, publisher = {National Aeronautics and Space Administration}, address = {Hampton, VA}, pages = {771}, year = {1998}, subject = {Lidar}, language = {en} } @inproceedings{DouardZeutziusReitzLampetal.1997, author = {Douard, Mathilde and Zeutzius-Reitz, Juergen and Lamp, Torsten and Ropertz, Alexander and Weber, Konradin}, title = {Quality-assurance procedures and measurements for open-path FTIR spectroscopy}, series = {SPIE Proceedings, Remote Sensing of Vegetation and Water, and Standardization of Remote Sensing Methods}, volume = {3107}, booktitle = {SPIE Proceedings, Remote Sensing of Vegetation and Water, and Standardization of Remote Sensing Methods}, editor = {Cecchi, Giovanna and Lamp, Torsten and Reuter, Rainer and Weber, Konradin}, publisher = {SPIE}, issn = {0277-786X}, doi = {10.1117/12.274747}, pages = {114 -- 125}, year = {1997}, subject = {FT-IR-Spektroskopie}, language = {en} } @inproceedings{LampRadmacherWeberetal.1997, author = {Lamp, Torsten and Radmacher, M. and Weber, Konradin and Gaertner, Andrea and Nitz, R. and Broeker, G.}, title = {Calibration of an open-path FTIR spectrometer for methane, ethylene, and carbon monoxide using a fixed 20-m multipass cell}, series = {SPIE Proceedings, Remote Sensing of Vegetation and Water, and Standardization of Remote Sensing Methods}, volume = {3107}, booktitle = {SPIE Proceedings, Remote Sensing of Vegetation and Water, and Standardization of Remote Sensing Methods}, editor = {Cecchi, Giovanna and Lamp, Torsten and Reuter, Rainer and Weber, Konradin}, publisher = {SPIE}, issn = {0277-786X}, doi = {10.1117/12.274748}, pages = {126 -- 136}, year = {1997}, subject = {FT-IR-Spektroskopie}, language = {en} } @inproceedings{PohlWeberFischeretal.2019, author = {Pohl, Tobias and Weber, Konradin and Fischer, Christian and Kramer, Tim}, title = {Investigation of the Temporal and Spatial Distribution of Ultrafine Particles with Stationary and Mobile Measurements at the International Airport in Duesseldorf}, series = {European Aerosol Conference 2019, 25.-30. August 2019, Gothenburg, Sweden}, booktitle = {European Aerosol Conference 2019, 25.-30. August 2019, Gothenburg, Sweden}, year = {2019}, subject = {Feinstaub}, language = {en} } @inproceedings{WeberKramerFischeretal.2019, author = {Weber, Konradin and Kramer, Tim and Fischer, Christian and Pohl, Tobias and B{\"o}hlke, Christoph}, title = {Evaluation of low cost and mid cost sensors for fine particulate matter at urban sites}, series = {Geophysical Research Abstracts: EGU General Assembly 2019}, volume = {21}, booktitle = {Geophysical Research Abstracts: EGU General Assembly 2019}, publisher = {Copernicus}, address = {G{\"o}ttingen}, year = {2019}, abstract = {High ambient air concentrations of fine particulate matter are a problem in many European cities, especially in traffic loaded street canyons. Therefore, the introduction of traffic restricted or traffic reduced areas is discussed as a countermeasure in several towns. However, at that point it is not always clear, in what extent the restriction of traffic in presently overloaded streets causes the exceeding of limit values in other areas of the town after the redirection of the traffic. Presently this cannot be recorded appropriately, when the concentrations of fine particulate matter are monitored only at rarely distributed single points by the official measurement systems of the environmental state agencies. On the other hand, meanwhile there are low cost and mid cost sensors for the measurement of fine particulate matter available, which enable the parallel monitoring with many measurement systems in an extended area of the town. By this way, the effect of traffic restrictions on the distribution of fine particulate matter in the city can potentially be observed. However, at this point the question arises, how reliable the results are, which are delivered by the low and mid cost sensors for fine particulate matter. For this reason different low cost and mid cost sensors have been evaluated for this study and intercompared with certified reference measurement systems for fine particulate matter. The study comprised the sensors SDS011 (Nova Fitness), which is in use already for several citizen science projects in Germany, SPS30 (Sensirion), OPC-R1 (Alphasense), OPC-N2 (Alphasense) and OPC-N3 (Alphasense). This study was performed at urban sites in D{\"u}sseldorf (Germany) for several weeks and covered different traffic loads and different meteorological situations, in order to get representative results. As atmospheric humidity can influence the measurement results, the humidity was measured in parallel to the fine particulate matter. It could be shown that the validity of the measurement results of fine particulate matter could be improved, when the parallel readings of the humidity were taken into account.}, subject = {Messtechnik}, language = {en} } @inproceedings{WeberThielkeFischer2019, author = {Weber, Konradin and Thielke, Jan and Fischer, Christian}, title = {Evaluation of selected physical parameters measured with smartphones}, series = {Verhandlungen der Deutschen Physikalische Gesellschaft e.V.}, booktitle = {Verhandlungen der Deutschen Physikalische Gesellschaft e.V.}, publisher = {Deutsche Physikalische Gesellschaft e.V.}, address = {Bad Honnef}, year = {2019}, subject = {Messtechnik}, language = {en} } @inproceedings{WeberHewelingPohletal.2019, author = {Weber, Konradin and Heweling, Georg and Pohl, Tobias and Fischer, Christian and B{\"o}hlke, Christoph}, title = {Untersuchung der raum-zeitlichen Variabilit{\"a}t verschiedener Luftschadstoffe in der Innenstadt D{\"u}sseldorfs mit mobilen Messungen}, series = {Verhandlungen der Deutschen Physikalischen Gesellschaft e.V.}, booktitle = {Verhandlungen der Deutschen Physikalischen Gesellschaft e.V.}, publisher = {Deutsche Physikalische Gesellschaft e.V.}, address = {Bad Honnef}, year = {2019}, subject = {Luftverunreinigender Stoff}, language = {de} }