Zobrazeno 1 - 10 of 28 pro vyhledávání: '"Oliver Appel"'
1
Chemical analysis of the Asian tropopause aerosol layer (ATAL) with emphasis on secondary aerosol particles using aircraft-based in situ aerosol mass spectrometry
Autor: Oliver Appel, Franziska Köllner, Antonis Dragoneas, Andreas Hünig, Sergej Molleker, Hans Schlager, Christoph Mahnke, Ralf Weigel, Max Port, Christiane Schulz, Frank Drewnick, Bärbel Vogel, Fred Stroh, Stephan Borrmann
Publikováno v: Atmospheric chemistry and physics 22(20), 13607-13630 (2022). doi:10.5194/acp-22-13607-2022
Aircraft-borne in situ measurements of the chemical aerosol composition were conducted in the Asian tropopause aerosol layer (ATAL) over the Indian subcontinent in the summer of 2017, covering particle sizes below ∼3 µm. We have implemented a rece
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63ed1fd96d16bab26a2ec9a1bf4a548d
https://doi.org/10.5194/acp-22-13607-2022
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3
Chemical analysis of the 2017 ATAL measured during StratoClim – New insights into refractory aerosol components
Autor: Franziska Köllner, Oliver Appel, Antonis Dragoneas, Andreas Hünig, Sergej Molleker, Martin Ebert, Stephan Borrmann
The chemical nature of the Asian aerosol tropopause layer (ATAL) was controversially discussed in the past decade. Modeling studies show the importance of black carbon and mineral dust aerosol for the formation of the ATAL (e.g., Bossolasco et al., 2
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::453156227658aa787b768915cedc28e1
https://doi.org/10.5194/egusphere-egu23-13722
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4
Design, characterization, and first field deployment of a novel aircraft-based aerosol mass spectrometer combining the laser ablation and flash vaporization techniques
Autor: Johannes Schneider, Thomas Böttger, Sergej Molleker, Frank Drewnick, Stephan Borrmann, Andreas Hünig, Oliver Appel, Frank Helleis, Thomas Klimach, Hans-Christian Clemen, Franziska Köllner, Antonis Dragoneas
Publikováno v: Atmospheric Measurement Techniques
Atmospheric Measurement Techniques Discussions
In this paper, we present the design, development, and characteristics of the novel aerosol mass spectrometer ERICA (ERC Instrument for Chemical composition of Aerosols; ERC – European Research Council) and selected results from the first airborne
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a07400c17b030ab64cd2c506910b287b
https://doi.org/10.5194/amt-15-2889-2022
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6
Application of an O-ring pinch device as a constant-pressure inlet (CPI) for airborne sampling
Autor: Sergej Molleker, Oliver Appel, Florian Rubach, Franziska Köllner, Frank Helleis, Antonis Dragoneas, Thomas Klimach, Hans-Christian Clemen, Andreas Hünig, Johannes Schneider, Christiane Schulz, Stephan Borrmann, C. Gurk
Publikováno v: Atmospheric Measurement Techniques, Vol 13, Pp 3651-3660 (2020)
We present a novel and compact design of a constant-pressure inlet (CPI) developed for use in airborne aerosol mass spectrometry. In particular, the inlet system is optimized for aerodynamic lenses commonly used in aerosol mass spectrometers, in whic
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ad516881bbd59e872d681eb35d0a615
https://doi.org/10.5194/amt-13-3651-2020
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8
The realization of autonomous, aircraft-based, real-time aerosol mass spectrometry in the upper troposphere and lower stratosphere
Autor: Antonis Dragoneas, Sergej Molleker, Oliver Appel, Andreas Hünig, Thomas Böttger, Markus Hermann, Frank Drewnick, Johannes Schneider, Ralf Weigel, Stephan Borrmann
Publikováno v: Atmospheric Measurement Techniques
We report on the developments that enabled the field deployment of a fully-automated aerosol mass spectrometer, specially designed for high-altitude measurements on unpressurised aircraft. The merits of the two main categories of real-time aerosol ma
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::942cad0a3d8903ed6aa43894d8454e6a
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10
Simulation of aerosol and its radiative effects from 1990 to 2017 by the CCM EMAC as contribution to SSIRC-ISAMIP and StratoClim
Autor: Jennifer Schallock, Ralf Weigel, Hans Schlager, Oliver Appel, Christoph Brühl, Jos Lelieveld
The chemistry climate model EMAC with interactive stratospheric and tropospheric aerosol is used for transient simulation of aerosol radiative forcing including effects of about 500 explosive volcanic eruptions and desert dust. We demonstrate that vo
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::85e99a2b3e4f25e4a71ecd806bf748ac
https://doi.org/10.5194/egusphere-egu21-2597
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