Prof. Konradin Weber Profile

Prof. Konradin Weber

at Hochschule Duesseldorf

SPIE Involvement:

Conference Program Committee | Editor | Author

Proceedings Article | 12 September 2021 Presentation

Airborne measurements of SO2 of the Fagradalsfjall eruption in Iceland with remote sensing

Jónas Elíasson, Gylfi Árnason, Konradin Weber

Proceedings Volume 11859, 1185907 (2021) https://doi.org/10.1117/12.2608724

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The eruption begun after an intensive earthquake activity in the volcanic system of Reykjanes that opened up several kilometer long underground dike crossing the plate boundary of Reykjanes at an angle of around 22°. Quakes of varying intensity caused material damage in the township of Grindavik, the major population center in the neighborhood. The eruption came on March 20th, with put any clear warning, a magma eruption without much ash formation but when reaching the surface, the magma released gasses in a magnitude similar to other volcanic eruption of this type, e.g., Holuhraun (magma from Bardarbunga) 2014 and Surtsey 1963 - 1967. A characteristic SO2 emission in this eruption was measured 6kg/sec of SO2 from each m3 of magma or 2 o/ o o. This is similar to what was observed in the Holuhraun airborne observation campaign and corresponds very well to the estimates for Surtsey. The composition of the volcanic gas is similar too, the main constituent is water, often 90 - 55% of the total gas flow. The magma is 1200 - 1300 °C hot and comes from a very deep source about 20 km down. The possibility exists that the eruption goes on for a long time, widens the conduit and increases in output. An airborne measurement campaign was conducted in a light airplane, TF-VTR, by Dr. Gylfi Árnason, Reykjavik University (RU) with a mobile remote sensing DOAS instrumentation specially adapted for use in this airplane from the Duesseldorf University of Applied Sciences (HSD), Germany. This observation technology has been used with good results during volcanic events in Europe, Japan and America. Four sorties were carried out, measuring the column load of SO2 by flying under the plume in several traverses, each giving about 20 measurements of the SO2 column load. The results are compared to other measurement results from IMO (Icelandic Meteorological Institute) and UI (University of Iceland) and results from previous campaigns 2014 and 1963 - 67 and found similar. In the beginning the eruption output was steady at 5 m3/sec but was increasing in output magnitude and pulsating, making gas flux estimations more difficult. A steady plume in a steady wind follows the dispersion model developed by the authors, but the pulsating plume creates large puffs with high gas concentrations and increased hazards for nearby populations centers. Gas accumulation in a large clouds during calm weather, observed during the 2014 Holuhraun event, does also happen here and increases the risk of serious pollution events. This seriously hampers the possibility of using modeling results only to estimate gas pollution risks, and stresses the need for monitoring the gas flow by airborne measurements of the propagation of the plumes, puffs and accumulated clouds that may threaten the neighborhood.

Proceedings Article | 9 October 2018 Paper

Standards VDI 4211 and VDI 4212 on passive FTIR and DOAS remote sensing techniques

Norbert Höfert, Klaus Schäfer, Andreas Richter, Konradin Weber, Peter Maas

Proceedings Volume 10786, 107860W (2018) https://doi.org/10.1117/12.2325145

KEYWORDS: Environmental monitoring, Spectroscopic atmospheric monitoring techniques, Passive remote sensing, Airborne remote sensing, Pollution detection, FT-IR spectroscopy, Remote sensing, Standards development, Spectroscopy, Air contamination

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Proceedings Article | 30 October 2012 Paper

TATP stand-off detection with open path: FTIR techniques

C. Fischer, T. Pohl, K. Weber, A. Vogel, G. van Haren, W. Schweikert

Proceedings Volume 8546, 85460Y (2012) https://doi.org/10.1117/12.974592

KEYWORDS: FT-IR spectroscopy, Solids, Explosives, Sensors, Absorption, Cameras, Metals, Detector arrays, Infrared sensors, Telescopes

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Proceedings Article | 26 October 2010 Paper

Airborne measurements of the Eyjafjallajökull volcanic ash plume over northwestern Germany with a light aircraft and an optical particle counter: first results

Konradin Weber, Andreas Vogel, Christian Fischer, Günther van Haren, Tobias Pohl

Proceedings Volume 7832, 78320P (2010) https://doi.org/10.1117/12.869629

KEYWORDS: Particles, Optical proximity correction, Applied sciences, Phase modulation, Meteorology, Laser scattering, Scattering, Spectrometers, Atmospheric particles, Signal detection

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Proceedings Article | 12 October 2010 Paper

Development of a VDI guideline for passive FTIR measurements in the atmosphere

Klaus Schäfer, Roland Harig, Thomas Blumenstock, Norbert Höfert, Konradin Weber

Proceedings Volume 7827, 782710 (2010) https://doi.org/10.1117/12.866466

KEYWORDS: Gases, Spectrometers, FT-IR spectroscopy, Remote sensing, Imaging systems, Clouds, Sensors, Calibration, Temperature metrology, Spectroscopy

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Proceedings Article | 29 September 2006 Paper

Ground-based remote sensing of gas emissions from Teide volcano (Tenerife, Canary Islands, Spain): first results

K. Weber, C. Fischer, G. Van Haren, K. Bothe, S. Pisirtsidis, M. Laue, Y. González Ramos, J. Barrancos Martínez, P. Hernández, N. Pérez, K. Pabel, M. Sosef

Proceedings Volume 6362, 63621H (2006) https://doi.org/10.1117/12.714411

KEYWORDS: Carbon monoxide, Remote sensing, Gases, UV optics, Optical testing, Atmospheric optics, Atmospheric sensing, Sensing systems, Ultraviolet radiation, Applied sciences

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Proceedings Article | 4 November 2004 Paper

A commercial tunable diode laser (TDL) system for on-line remote measurements of automobile emissions

Konradin Weber, Alexander Ropertz, Thomas Schwabe, Christian Fischer, Gunther van Haren

Proceedings Volume 5570, (2004) https://doi.org/10.1117/12.566395

KEYWORDS: Calibration, Carbon monoxide, Gas lasers, Laser systems engineering, Sensors, Tunable diode lasers, Absorption, Pollution, Optical testing, Retroreflectors

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Proceedings Article | 16 September 1999 Paper

Use of quality assurance procedures for FTIR field measurement data

Alexander Ropertz, Torsten Lamp, Marcus Mueller, Guenther van Haren, Konradin Weber

Proceedings Volume 3821, (1999) https://doi.org/10.1117/12.364208

KEYWORDS: Absorption, Spectroscopy, Humidity, FT-IR spectroscopy, Interference (communication), Absorbance, Remote sensing, Sensing systems, Stray light, Retroreflectors

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Proceedings Article | 16 September 1999 Paper

Intercomparison of different remote sensing systems: FLIR, DOAS, and TDL

Torsten Lamp, Alexander Ropertz, M. Mueller, Guenther van Haren, Konradin Weber, Andreas Fischer

Proceedings Volume 3821, (1999) https://doi.org/10.1117/12.364202

KEYWORDS: Ozone, Remote sensing, Sensing systems, FT-IR spectroscopy, Spectroscopy, Absorbance, Absorption, Carbon monoxide, Methane, Gases

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Proceedings Article | 10 February 1999 Paper

First results of ambient air measurements with different remote sensing systems over a lake in Germany

Torsten Lamp, Alexander Ropertz, Konradin Weber, Guenther van Haren, Andreas Fischer

Proceedings Volume 3534, (1999) https://doi.org/10.1117/12.338995

KEYWORDS: Ozone, Remote sensing, Sensing systems, FT-IR spectroscopy, Spectroscopy, Carbon monoxide, NOx, Scattering, Meteorology, Methane

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Proceedings Article | 23 May 1997 Paper

Calibration of an open-path FTIR spectrometer for methane, ethylene, and carbon monoxide using a fixed 20-m multipass cell

Torsten Lamp, M. Radmacher, Konradin Weber, Andrea Gaertner, R. Nitz, G. Broeker

Proceedings Volume 3107, (1997) https://doi.org/10.1117/12.274748

KEYWORDS: Calibration, Methane, Spectroscopy, Carbon monoxide, Absorbance, Standards development, FT-IR spectroscopy, Spectral resolution, Nitrogen, Infrared spectroscopy

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Proceedings Article | 23 May 1997 Paper

Quality-assurance procedures and measurements for open-path FTIR spectroscopy

Mathilde Douard, Juergen Zeutzius-Reitz, Torsten Lamp, Alexander Ropertz, Konradin Weber

Proceedings Volume 3107, (1997) https://doi.org/10.1117/12.274747

KEYWORDS: Lawrencium, FT-IR spectroscopy, Spectrometers, Methane, Absorbance, Calibration, Spectroscopes, Infrared radiation, Infrared spectroscopy, Signal detection

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Proceedings Article | 23 May 1997 Paper

Calibration of a high-resolution open-path FTIR spectrometer combined with an adjustable 100-m multipass cell

Alexander Ropertz, Torsten Lamp, Mathilde Douard, Konradin Weber, Andrea Gaertner, C. Elbers, R. Nitz

Proceedings Volume 3107, (1997) https://doi.org/10.1117/12.274749

KEYWORDS: Calibration, FT-IR spectroscopy, Spectroscopy, Methane, Statistical analysis, Absorbance, Absorption, Signal to noise ratio, Carbon monoxide, Optical design

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Proceedings Article | 23 May 1997 Paper

Standardization of open-path FTIR measurements in Germany

Konradin Weber, Karl-Heinz Eickel

Proceedings Volume 3107, (1997) https://doi.org/10.1117/12.274753

KEYWORDS: Air contamination, Standards development, FT-IR spectroscopy, Sensors, Remote sensing, Agriculture, Testing and analysis, Pollution, Pollution detection, Absorption

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Proceedings Article | 31 May 1995 Paper

Application of FTIR spectroscopy to open-path measurements at industrial sites in Germany

Torsten Lamp, Konradin Weber, Johannes Weidemann, Guenther van Haren

Proceedings Volume 2365, (1995) https://doi.org/10.1117/12.210782

KEYWORDS: FT-IR spectroscopy, Spectroscopy, Sensors

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Proceedings Article | 31 May 1995 Paper

Open-path FTIR measurements at an urban area in Germany

Konradin Weber, Johannes Weidemann, Guenther van Haren, Torsten Lamp

Proceedings Volume 2365, (1995) https://doi.org/10.1117/12.210818

KEYWORDS: FT-IR spectroscopy, Methane, Environmental sensing, Absorption, Carbon monoxide, Air contamination, Spectroscopy, Infrared telescopes, Telescopes, Retroreflectors

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Showing 5 of 16 publications

SPIE Conference Volume | 27 November 2023

Remote Sensing of Clouds and the Atmosphere XXVIII

SPIE Conference Volume | 18 November 2022

Remote Sensing of Clouds and the Atmosphere XXVII

SPIE Conference Volume | 14 October 2021

Remote Sensing of Clouds and the Atmosphere XXVI

SPIE Conference Volume | 8 October 2020

Remote Sensing of Clouds and the Atmosphere XXV

SPIE Conference Volume | 20 December 2019

Remote Sensing of Clouds and the Atmosphere XXIV

Showing 5 of 17 publications

Conference Committee Involvement (27)

Remote Sensing of Clouds and the Atmosphere XXX

15 September 2025 | Madrid, Spain

Remote Sensing of Clouds and the Atmosphere XXIX

17 September 2024 | Edinburgh, United Kingdom

Remote Sensing of Clouds and the Atmosphere XXVIII

5 September 2023 | Amsterdam, Netherlands

Remote Sensing of Clouds and the Atmosphere XXVII

5 September 2022 | Berlin, Germany

Remote Sensing of Clouds and the Atmosphere XXVI

13 September 2021 | Online Only, Spain

Remote Sensing of Clouds and the Atmosphere XXV

21 September 2020 | Online Only, United Kingdom

Remote Sensing of Clouds and the Atmosphere XXIV

11 September 2019 | Strasbourg, France

Remote Sensing of Clouds and the Atmosphere XIII

12 September 2018 | Berlin, Germany