TY - JOUR A1 - Prata, A. J. A1 - Dezitter, F. A1 - Davies, I. A1 - Weber, Konradin A1 - Birnfeld, M. A1 - Moriano, D. A1 - Bernardo, C. A1 - Vogel, A. A1 - Prata, G. S. A1 - Mather, T. A. A1 - Thomas, H. E. A1 - Cammas, J. A1 - Weber, M. T1 - Artificial cloud test confirms volcanic ash detection using infrared spectral imaging JF - Scientific reports N2 - Airborne volcanic ash particles are a known hazard to aviation. Currently, there are no means available to detect ash in flight as the particles are too fine (radii < 30 μm) for on-board radar detection and, even in good visibility, ash clouds are difficult or impossible to detect by eye. The economic cost and societal impact of the April/May 2010 Icelandic eruption of Eyjafjallajökull generated renewed interest in finding ways to identify airborne volcanic ash in order to keep airspace open and avoid aircraft groundings. We have designed and built a bi-spectral, fast-sampling, uncooled infrared camera device (AVOID) to examine its ability to detect volcanic ash from commercial jet aircraft at distances of more than 50 km ahead. Here we report results of an experiment conducted over the Atlantic Ocean, off the coast of France, confirming the ability of the device to detect and quantify volcanic ash in an artificial ash cloud created by dispersal of volcanic ash from a second aircraft. A third aircraft was used to measure the ash in situ using optical particle counters. The cloud was composed of very fine ash (mean radii ~10 μm) collected from Iceland immediately after the Eyjafjallajökull eruption and had a vertical thickness of ~200 m, a width of ~2 km and length of between 2 and 12 km. Concentrations of ~200 μg m(-3) were identified by AVOID at distances from ~20 km to ~70 km. For the first time, airborne remote detection of volcanic ash has been successfully demonstrated from a long-range flight test aircraft. KW - Luftreinhaltung Y1 - 2016 U6 - https://doi.org/10.1038/srep25620 VL - 6 PB - Springer Nature ER - TY - JOUR A1 - Carapezza, M. L. A1 - Barberi, F. A1 - Ranaldi, M. A1 - Ricci, T. A1 - Tarchini, L. A1 - Barrancos, José A1 - Fischer, C. A1 - Granieri, D. A1 - Lucchetti, C. A1 - Melian, G. A1 - Perez, N. A1 - Tuccimei, P. A1 - Vogel, A. A1 - Weber, Konradin T1 - Hazardous gas emissions from the flanks of the quiescent Colli Albani volcano (Rome, Italy) JF - Applied Geochemistry KW - Luftreinhaltung Y1 - 2012 UR - https://doi.org/10.1016/j.apgeochem.2012.02.012 U6 - https://doi.org/10.1016/j.apgeochem.2012.02.012 VL - 27 IS - 9 SP - 1767 EP - 1782 PB - Elsevier ER - TY - JOUR A1 - Carapezza, M. L. A1 - Barberi, F. A1 - Ranaldi, M. A1 - Ricci, T. A1 - Tarchini, L. A1 - Barrancos, José A1 - Fischer, C. A1 - Perez, N. A1 - Weber, Konradin A1 - Di Piazza, A. A1 - Gattuso, A. T1 - Diffuse CO2 soil degassing and CO2 and H2S concentrations in air and related hazards at Vulcano Island (Aeolian arc, Italy) JF - Journal of Volcanology and Geothermal Research Y1 - 2011 U6 - https://doi.org/10.1016/j.jvolgeores.2011.06.010 VL - 207 IS - 3-4 SP - 130 EP - 144 PB - Elsevier ER - TY - CHAP A1 - Pieri, D. C. A1 - Diaz, J. A. A1 - Bland, G. A1 - Fladeland, M. M. A1 - Abtahi, A. A1 - Alan, A. Jr. A1 - Alegria, O. A1 - Azofeifa, S. A1 - Berthold, R. A1 - Corrales, E. A1 - Fuerstenau, S. A1 - Gerardi, J. A1 - Herlth, D. A1 - Hickman, G. A1 - Hunter, G. A1 - Linick, J. A1 - Mardigal, Y. A1 - Makel, D. A1 - Miles, T. A1 - Realmuto, V. J. A1 - Storms, B. A1 - Vogel, A. A1 - Kolyer, R. A1 - Weber, Konradin T1 - Systematic observations of Volcán Turrialba, Costa Rica, with small unmanned aircraft and aerostats (UAVs): the Costa Rican Airborne Research and Technology Applications (CARTA) missions [Abstract] T2 - American Geophysical Union, Fall Meeting 2014 N2 - For several years, the University of Costa Rica, NASA Centers (e.g., JPL, ARC, GSFC/WFF, GRC) & NASA contractors-partners have made regular in situ measurements of aerosols & gases at Turrialba Volcano in Costa Rica, with aerostats (e.g., tethered balloons & kites), & free-flying fixed wing UAVs (e.g., Dragon Eye, Vector Wing 100, DELTA 150), at altitudes up to 12.5Kft ASL within 5km of the summit. Onboard instruments included gas detectors (e.g., SO2, CO2), visible & thermal IR cameras, air samplers, temperature pressure & humidity sensors, particle counters, & a nephelometer. Deployments are timed to support bimonthly overflights of the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) onboard the NASA Terra satellite (26 deployments to date). In situ observations of dilute plume SO2 concentrations (~1-20ppmv), plume dimensions, and associated temperature, pressure, & humidity profiles, validate detailed radiative transfer-based SO2 retrievals, as well as archive-wide ASTER band-ratio SO2 algorithms. Our recent UAV-based CO2 observations confirm high concentrations (e.g., ~3000ppmv max at summit jet), with 1000-1500ppmv flank values, and essentially global background CO2 levels (400ppmv) over distal surroundings. Transient Turrialba He detections (up to 20ppmv) were obtained with a small (~10kg) airborne mass spectrometer on a light aircraft—a UAV version (~3kg) will deploy there soon on the UCR DELTA 500. Thus, these platforms, though small (most payloads <500gm), can perform valuable systematic measurements of potential eruption hazards, as well as of volcano processes. Because they are economical, flexible, and effective, such platforms promise unprecedented capabilities for researchers and responders throughout Central and South America, undertaking volcanic data acquisitions uniquely suited to such small aircraft in close proximity to known hazards, or that were previously only available using full-sized manned aircraft. This work was carried out, in part, at the Jet Propulsion Laboratory of the California Institute of Technology under NASA contract. We are grateful to the Universidad de Costa Rica, the NASA Airborne Science and Earth Surface & Interior Programs, the Dirección General de Aeronáutica Civil de Costa Rica, and FH Düsseldorf for their support. KW - Luftreinhaltung KW - Vulkanismus KW - Messtechnik KW - Schwefeldioxid KW - Atmosphärisches Aerosol KW - Flugkörper Y1 - 2014 UR - https://ui.adsabs.harvard.edu/abs/2014AGUFM.V41C4838P/abstract ER - TY - JOUR A1 - Henin, S. A1 - Stelmaszczyk, K. A1 - Petrarca, M. A1 - Rohwetter, P. A1 - Hao, Z. Q. A1 - Lüder, J. A1 - Petit, Y. A1 - Vogel, A. A1 - Weber, Konradin A1 - Kasparian, J. A1 - Wöste, L. A1 - Wolf, J.-P. T1 - Laser Filament Induced Water Condensation JF - EPJ Web of Conferences N2 - C Owned by the authors, published by EDP Sciences, 2013 Y1 - 2013 U6 - https://doi.org/10.1051/epjconf/20134112008 VL - 41 PB - edp sciences ER - TY - JOUR A1 - Joly, P. A1 - Petrarca, M. A1 - Vogel, A. A1 - Pohl, T. A1 - Nagy, T. A1 - Jusforgues, Q. A1 - Simon, P. A1 - Kasparian, J. A1 - Weber, K. A1 - Wolf, J.-P. T1 - Laser-induced condensation by ultrashort laser pulses at 248 nm JF - Applied Physics Letters KW - Luftreinhaltung Y1 - 2013 U6 - https://doi.org/10.1063/1.4794416 VL - 102 IS - 9 PB - AIP ER - TY - JOUR A1 - General, S. A1 - Pöhler, D. A1 - Sihler, H. A1 - Bobrowski, N. A1 - Frieß, U. A1 - Zielcke, J. A1 - Horbanski, M. A1 - Shepson, P. B. A1 - Stirm, B. H. A1 - Simpson, W. R. A1 - Weber, Konradin A1 - Fischer, C. A1 - Platt, U. T1 - The Heidelberg Airborne Imaging DOAS Instrument (HAIDI) – a novel imaging DOAS device for 2-D and 3-D imaging of trace gases and aerosols JF - Atmospheric Measurement Techniques N2 - 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). KW - Luftreinhaltung Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-50179 SN - 1867-8548 VL - 7 IS - 10 SP - 3459 EP - 3485 PB - Copernicus ER - TY - JOUR A1 - Leadbetter, S. J. A1 - Hort, M. C. A1 - von Löwis, S. A1 - Weber, Konradin A1 - Witham, C. S. T1 - Modeling the resuspension of ash deposited during the eruption of Eyjafjallajökull in spring 2010 JF - Journal of Geophysical Research: Atmospheres N2 - Eyjafjallajökull, a volcano in southern Iceland, erupted explosively in April and May 2010 depositing ash over a region of more than 3000 km2 to the east and southeast of the volcano. This deposited ash has been frequently remobilized by the wind causing concern for the health of Icelanders living in the region. An investigation was carried out to determine whether it would be possible to produce forecasts of days when high airborne ash concentrations were likely to occur. Information about the spatially varying surface characteristics of the region of deposited ash is not available so in the modeling approach adopted here ash is released from the surface at a rate proportional to the cube of the excess friction velocity (local friction velocity minus a threshold) only when the friction velocity exceeds a threshold. Movement of the resuspended ash is then modeled in a Lagrangian dispersion model. Modeled ash concentrations are compared to observed concentrations from two periods; PM10 observations between 23 May and 2 July 2010 and airborne particle counts between 21 September 2010 and 16 February 2011. More than 66% of the resuspension episodes between May and July are captured by the model and the relative magnitudes of the modeled episodes in this period are in good agreement with the observations. 66% of episodes between October and February are also captured by the model although there is an increase in the false alarm rate which appears to be due to the influence of precipitation. KW - Luftreinhaltung Y1 - 2012 U6 - https://doi.org/10.1029/2011JD016802 SN - 0148-0227 VL - 117 IS - D20 PB - American Geophysical Union (AGU) ER - TY - JOUR A1 - Bonn, Boris A1 - von Schneidemesser, Erika A1 - Andrich, Dorota A1 - Quedenau, Jörn A1 - Gerwig, Holger A1 - Lüdecke, Anja A1 - Kura, Jürgen A1 - Pietsch, Axel A1 - Ehlers, Christian A1 - Klemp, Dieter A1 - Kofahl, Claudia A1 - Nothard, Rainer A1 - Kerschbaumer, Andreas A1 - Junkermann, Wolfgang A1 - Grote, Rüdiger A1 - Pohl, Tobias A1 - Weber, Konradin A1 - Lode, Birgit A1 - Schönberger, Philipp A1 - Churkina, Galina A1 - Butler, Tim M. A1 - Lawrence, Mark G. T1 - BAERLIN2014 – the influence of land surface types on and the horizontal heterogeneity of air pollutant levels in Berlin JF - Atmospheric Chemistry and Physics N2 - Abstract. Urban air quality and human health are among the key aspects of future urban planning. In order to address pollutants such as ozone and particulate matter, efforts need to be made to quantify and reduce their concentrations. One important aspect in understanding urban air quality is the influence of urban vegetation which may act as both emitter and sink for trace gases and aerosol particles. In this context, the "Berlin Air quality and Ecosystem Research: Local and long-range Impact of anthropogenic and Natural hydrocarbons 2014" (BAERLIN2014) campaign was conducted between 2 June and 29 August in the metropolitan area of Berlin and Brandenburg, Germany. The predominant goals of the campaign were (1) the characterization of urban gaseous and particulate pollution and its attribution to anthropogenic and natural sources in the region of interest, especially considering the connection between biogenic volatile organic compounds and particulates and ozone; (2) the quantification of the impact of urban vegetation on organic trace gas levels and the presence of oxidants such as ozone; and (3) to explain the local heterogeneity of pollutants by defining the distribution of sources and sinks relevant for the interpretation of model simulations. In order to do so, the campaign included stationary measurements at urban background station and mobile observations carried out from bicycle, van and airborne platforms. This paper provides an overview of the mobile measurements (Mobile BAERLIN2014) and general conclusions drawn from the analysis. Bicycle measurements showed micro-scale variations of temperature and particulate matter, displaying a substantial reduction of mean temperatures and particulate levels in the proximity of vegetated areas compared to typical urban residential area (background) measurements. Van measurements extended the area covered by bicycle observations and included continuous measurements of O3, NOx, CO, CO2 and point-wise measurement of volatile organic compounds (VOCs) at representative sites for traffic- and vegetation-affected sites. The quantification displayed notable horizontal heterogeneity of the short-lived gases and particle number concentrations. For example, baseline concentrations of the traffic-related chemical species CO and NO varied on average by up to ±22.2 and ±63.5 %, respectively, on the scale of 100 m around any measurement location. Airborne observations revealed the dominant source of elevated urban particulate number and mass concentrations being local, i.e., not being caused by long-range transport. Surface-based observations related these two parameters predominantly to traffic sources. Vegetated areas lowered the pollutant concentrations substantially with ozone being reduced most by coniferous forests, which is most likely caused by their reactive biogenic VOC emissions. With respect to the overall potential to reduce air pollutant levels, forests were found to result in the largest decrease, followed by parks and facilities for sports and leisure. Surface temperature was generally 0.6–2.1 °C lower in vegetated regions, which in turn will have an impact on tropospheric chemical processes. Based on our findings, effective future mitigation activities to provide a more sustainable and healthier urban environment should focus predominantly on reducing fossil-fuel emissions from traffic as well as on increasing vegetated areas. KW - Luftreinhaltung Y1 - 2016 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-50065 SN - 1680-7324 VL - 16 IS - 12 SP - 7785 EP - 7811 PB - Copernicus ER - TY - JOUR A1 - Weber, Konradin A1 - Eliasson, J. A1 - Vogel, A. A1 - Fischer, C. A1 - Pohl, T. A1 - van Haren, G. A1 - Meier, M. A1 - Grobéty, B. A1 - Dahmann, D. T1 - Airborne in-situ investigations of the Eyjafjallajökull volcanic ash plume on Iceland and over north-western Germany with light aircrafts and optical particle counters JF - Atmospheric Environment KW - Luftreinhaltung Y1 - 2012 U6 - https://doi.org/10.1016/j.atmosenv.2011.10.030 SN - 1352-2310 VL - 48 SP - 9 EP - 21 PB - Elsevier ER - TY - JOUR A1 - Petrarca, M. A1 - Henin, S. A1 - Stelmaszczyk, K. A1 - Bock, S. A1 - Kraft, S. A1 - Schramm, U. A1 - Vaneph, C. A1 - Vogel, A. A1 - Kasparian, J. A1 - Sauerbrey, R. A1 - Weber, Konradin A1 - Wöste, L. A1 - Wolf, J.-P. T1 - Multijoule scaling of laser-induced condensation in air JF - Applied Physics Letters N2 - Using 100 TW laser pulses, we demonstrate that laser-induced nanometric particle generation in air increases much faster than the beam-averaged incident intensity. This increase is due to a contribution from the photon bath, which adds up with the previously identified one from the filaments and becomes dominant above 550 GW/cm2. It appears related to ozone formation via multiphoton dissociation of the oxygen molecules and demonstrates the critical need for further increasing the laser energy in view of macroscopic effects in laser-induced condensation. KW - Luftreinhaltung Y1 - 2011 U6 - https://doi.org/10.1063/1.3646397 SN - 0003-6951 VL - 99 IS - 14 PB - AIP Publishing ER - TY - JOUR A1 - Petit, Y. A1 - Henin, S. A1 - Kasparian, J. A1 - Wolf, J. P. A1 - Rohwetter, P. A1 - Stelmaszczyk, K. A1 - Hao, Z. Q. A1 - Nakaema, W. M. A1 - Wöste, L. A1 - Vogel, A. A1 - Pohl, T. A1 - Weber, Konradin T1 - Influence of pulse duration, energy, and focusing on laser-assisted water condensation JF - Applied Physics Letters N2 - We investigate the influence of laser parameters on laser-assisted water condensation in the atmosphere. Pulse energy is the most critical parameter. Nanoparticle generation depends linearly on energy beyond the filamentation threshold. Shorter pulses are more efficient than longer ones with saturation at ∼1.5 ps. Multifilamenting beams appear more efficient than strongly focused ones in triggering the condensation and growth of submicronic particles, while polarization has a negligible influence on the process. The data suggest that the initiation of laser-assisted condensation relies on the photodissociation of the air molecules rather than on their photoionization. KW - Luftreinhaltung Y1 - 2011 U6 - https://doi.org/10.1063/1.3546172 SN - 0003-6951 VL - 98 IS - 4 PB - AIP Publishing ER - TY - CHAP A1 - Lamp, Torsten A1 - Radmacher, M. A1 - Weber, Konradin A1 - Gaertner, Andrea A1 - Nitz, R. A1 - Broeker, G. ED - Cecchi, Giovanna ED - Lamp, Torsten ED - Reuter, Rainer ED - Weber, Konradin T1 - Calibration of an open-path FTIR spectrometer for methane, ethylene, and carbon monoxide using a fixed 20-m multipass cell T2 - SPIE Proceedings, Remote Sensing of Vegetation and Water, and Standardization of Remote Sensing Methods KW - Luftreinhaltung KW - FT-IR-Spektroskopie KW - Messtechnik KW - Kalibrieren (Messtechnik) Y1 - 1997 U6 - https://doi.org/10.1117/12.274748 SN - 0277-786X VL - 3107 SP - 126 EP - 136 PB - SPIE ER - TY - CHAP A1 - Weber, Konradin A1 - Reichardt, R. A1 - Fischer, Christian A1 - Moser, H. M. A1 - Eliasson, Jonas ED - Jha, Manoj K. ED - Lazard, Myriam ED - Zaharim, Azami ED - Sopian, Kamaruzzaman T1 - Computational Visualization of Volcanic Ash Plume Concentrations Measured by light Aircrafts over Germany and Iceland during the Recent Eruptions of the Volcanoes Eyjafjallajökull and Grimsvötn T2 - Recent advances in Fluid Mechanics, Heat & Mass Transfer, Biology and Ecology KW - Luftreinhaltung KW - Vulkanasche KW - Visualisierung KW - Eyjafjallajökull KW - Atmosphärisches Aerosol Y1 - 2012 SN - 978-1-61804-065-7 SP - 236 EP - 240 PB - WSEAS ER - TY - CHAP A1 - Vogel, Andreas A1 - Weber, Konradin A1 - Eliasson, Jonas A1 - Palsson, Asgeir A1 - Moser, H. M. A1 - Palsson, Thorgeir A1 - von Löwis, S. A1 - Fischer, Christian T1 - Airborne and groundbased measurements of ash particles on Iceland and over Germany during the Grímsvötn eruption May 2011 [Abstract] T2 - Geophysical Research Abstracts:EGU General Assembly 2012, held 22-27 April, 2012 in Vienna, Austria N2 - The eruption of the Grimsvötn volcano in May 2010 posed with its ash plume a thread to the aviation in northern Europe. Because of ash plume forecasts of the VAAC London the airport of Keflavik in Iceland as well as airports in England, Scotland and Scandinavia were closed for some time, which caused the cancellation or change of about 500 flights in Europe. Even in Germany the airports of Bremen, Hamburg and Berlin were closed for several hours on 25 May 2011. During this eruption period in May 2011, a team of the Duesseldorf University of Applied Sciences, the University of Iceland, the University of Reykjavik and the IMO has performed airborne in-situ measurements over Iceland and Germany as well as ground based measurements in the south of Iceland. The ground based measurements were performed continuously during the whole eruption period at two significant positions (Skogar and Hvollsvöllur) with optical particle counters (OPCs). The measurement method was based on measuring the airborne concentrations of the classic aerosol components (PM10, PM2.5 and PM1) and TSP (total suspended particles) every 6 seconds. Additional measurement flights on Iceland were started already one day after the beginning of the eruption (twelve in-situ measurement flights) and marked the spatial and temporal spread of volcanic ash in the atmosphere. For the flights light slow flying piston engine powered airplanes where used. The flights over Iceland focused on the western part of Iceland in the region of Reykjavik and Keflavik and over the international airport in Keflavik and were mostly coordinated by ISAVIA. The measurement flights helped to keep Keflavik International Airport open for many additional hours despite of adverse predictions by the London VAAC model, because it was possible to observe the particle concentration on-line during the flights. In Germany a measurement flight was performed on 25 May 2012 over the northern part of Germany where the volcanic ash cloud was forecasted from the dispersion model of the London VAAC. This flight was performed on the behalf of the German Weather Service (DWD). The measurement flights revealed most time relative low airborne ash concentrations over western Iceland, although the groundbased measured ash concentrations in the south of Iceland nearer to the Grimsvötn were very high. In Germany the measured concentrations during the flight were low enough to be consistent with the re-opening of the airports Bremen, Hamburg and Berlin, which were closed by the authorities for several hours on 25 May 2011 because of high concentration predictions by the VAAC-model. The measurement flights clearly proved that OPCs, based on slow flying piston-motor driven aircrafts, are very suitable for the determination of airborne ash particles during volcanic eruptions. This is an important issue for air traffic safety. KW - Luftreinhaltung Y1 - 2012 UR - https://meetingorganizer.copernicus.org/EGU2012/EGU2012-12854-1.pdf SP - 12854 PB - Copernicus CY - Göttingen ER - TY - CHAP A1 - González Rial, Gabriel A1 - Dinardo, Daniel A1 - Padilla, Germán D. A1 - Barrancos, José A1 - Hernández, Pedro A. A1 - Pérez, Nemesio M. A1 - Weber, Konradin A1 - Fischer, Christian A1 - Amend, Detlef T1 - Remake of the low cost carbon dioxide sensor of the carbon dioxide network deployed by INVOLCAN in the urban areas of Puerto Naos and La Bombilla, La Palma, Canary Islands T2 - European Geosciences Union General Assembly 2024, Vienna, Austria, 14–19 Apr 2024 N2 - An anomalous CO2 degassing appeared by the end of Tajogaite eruption (North-West flank of Cumbre Vieja volcano ridge, La Palma, Canary Islands), in the neighborhoods of La Bombilla and Puerto Naos at about 6 km distance from the volcanic vent. The areas affected by the anomalous CO2 degassing were not directly affected by lava flows during the eruptive period. After the eruption, and due to this strong volcanic-hydrothermal carbon dioxide emissions (CO2 5-20%) were included in the exclusion zone. CO2 is an invisible toxic gas, as well as asphyxiating, and may be lethal when is present in concentrations higher than 14%. During the post-eruptive period, INVOLCAN deployed its own indoor and outdoor CO2 monitoring networks in collaboration with other institutions, with the aim of delimitating the anomalous CO2 degassing areas, paying attention to those areas where CO2 air concentration exceeds hazardous thresholds. The number of monitoring stations were increasing to cover most of the homes, garages, basements, and local businesses. The first monitoring network were based on a LILYGO; TTGO T-SIM7000G electroniccard, previously programmed with an unstable algorithm that caused problems during the measurements. After some implementations to enhance the stability of the sensor, a new algorithm was developed that consists of the acquisition of ambient values every 5 seconds, applying a Moving Average Filter in every measurement to avoid outliers. The SIM card integrated in the hardware allows the data transmission to an MQTT broker where the values are published every 5 minutes, recollecting them in a unique Raspberry Pi 4 Model B located at the INVOLCAN headquarters, that reads and stores the data in two databases (InfluxDB and Google Sheets). The visualization of the values are done through Grafana Cloud, recollecting the data from InfluxDB and showing them distributed as tables and a geographic map that illustrates the concentration in the measurement points. The difference between this and the last storing is the flexibility when visualizing the data, that can be transformed to different kind of plots as mentioned. Moreover, an API for the management of each subsystem is created using PyQT, allowing to the user the calibration of the sensors in remote, as well as executing a soft reboot, or the integration of deeper parameters like the sensor mode (manual polling, streaming or command mode) or pressure data. Two of the 20 devices have been successfully installed and they are working correctly in La Palma, meanwhile an amount of 18 devices are being tested and recollecting properly with better stability in CO2 concentration measurements at our laboratory and will be installed indoor in different locations soon. The remaking of the algorithm allows to forget previous problems of wrong data and disconnections, obtaining accurate data compared to commercial sensors and helping the operator to configure and control the sensors without moving to conflicting locations. KW - Vortrag KW - Vulkanismus KW - Kohlendioxid KW - Messtechnik KW - European Geosciences Union Y1 - 2024 U6 - https://doi.org/10.5194/egusphere-egu24-19641 N1 - Abstract IS - EGU24-19641 PB - Copernicus ER - TY - CHAP A1 - Eliasson, J. A1 - Watson, I.M. A1 - Weber, Konradin T1 - In Situ Observations of Airborne Ash From Manned Aircraft T2 - Volcanic Ash KW - Luftreinhaltung Y1 - 2016 SN - 9780081004050 U6 - https://doi.org/10.1016/B978-0-08-100405-0.00009-4 SP - 89 EP - 98 PB - Elsevier ER -