Zobrazeno 1 - 10
of 31
pro vyhledávání: '"E.-P. Röth"'
Autor:
E.-P. Röth, L. Vereecken
Publikováno v:
Atmospheric Chemistry and Physics, Vol 24, Pp 2625-2638 (2024)
The photolysis of mono-deuterated formaldehyde, CHDO, is a critical process in the deuterium enrichment of stratospheric hydrogen formed from methane. In this work, a consistent description of the quantum yields of the molecular and radical channels
Externí odkaz:
https://doaj.org/article/41746efe63e84abe856468f91136a220
Autor:
E.-P. Röth, D. H. Ehhalt
Publikováno v:
Atmospheric Chemistry and Physics, Vol 15, Iss 13, Pp 7195-7202 (2015)
New expressions for the wavelength-dependent photolysis quantum yields of CH2O, Φj, are presented. They are based on combinations of functions of the type Ai/(1+exp[−(1/λ − 1/λ0i)/bi]). The parameters Ai, bi, and λ0i which have a physical mea
Externí odkaz:
https://doaj.org/article/2ea0d6fc6cf448c2880a808f2c74a4ce
Akademický článek
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Autor:
Benedikt Steil, J. Brinkmann, Ch. Brühl, Kenneth S. Carslaw, R. Lehmann, Jens-Uwe Grooß, Daniel S. McKenna, R. O. Müller, T. H. Woyke, J. Hendricks, Heinrich Bovensmann, A. Zieger, Gebhard Günther, Rolf Müller, E. P. Röth, E. Lippert, John P. Burrows, Roland Ruhnke, Thomas Peter, Martina Krämer
Publikováno v:
Journal of Atmospheric Chemistry. 45:51-77
Several stratospheric chemistry modules from box, 2-D or 3-D models, have been intercompared. The intercomparison was focused on the ozone loss and associated reactive species under the conditions found in the cold, wintertime Arctic and Antarctic vo
Autor:
Bernhard Vogel, Harald Geiger, William R. Stockwell, Hartmut Herrmann, D. Weise, E.-P. Röth, Barbara Ervens, Bernard Aumont, D. Poppe, S. Wagner, Winfried Seidl
Publikováno v:
Journal of Atmospheric Chemistry. 40:77-86
Besides observational data model calculations are a very important tool for improving our understanding of multiphase chemistry in the troposphere. Before a chemical model can be used for that purpose it is necessary to show that the model does what
Autor:
Reinhard Zellner, Hans Sonntag, A. Hoffmann, D. Trapp, V. Mörs, E P Röth, T. Langbein, W. Malms
Publikováno v:
British Journal of Anaesthesia. 82:66-73
The atmospheric lifetimes of the halogenated anaesthetics halothane, enflurane, isoflurane, desflurane and sevoflurane with respect to reaction with the hydroxyl radical (OH.) and UV photolysis have been determined from observations of OH. reaction k
Publikováno v:
Geophysical Research Letters. 21:1239-1242
Filter radiometers sensitive in the spectral intervals 290–310 nm and at 280–400 nm were used to measure the actinic flux in the stratosphere. Data were obtained from seven balloon flights during the European Arctic Stratospheric Ozone Experiment
Autor:
Alkiviadis F. Bais, Steven A. Lloyd, M. van Weele, R. Schmitt, E. Griffioen, Arve Kylling, Sasha Madronich, E. P. Röth, James H. Crawford, John D. W. Barrick, A. Kraus, Gavin D. Edwards, Gregory J. Frost, Richard McKenzie, Russell R. Dickerson, Richard E. Shetter, Christopher A. Cantrell, Samuel R. Hall, Paul S. Monks, Jack G. Calvert, T. J. Martin, Gabriele Pfister, B. G. Gardiner, William H. Swartz, Bernhard Mayer, A. Ruggaber, Peter Koepke, Wolfgang Junkermann, Barry Lefer, Martin Müller, Harry Schwander, Maarten Krol, Andreas Hofzumahaus, Paul Johnston
Publikováno v:
Scopus-Elsevier
Journal of Geophysical Research 108, IPM 3-1-IPM 3-8 (2003). doi:10.1029/2002JD002932
ResearcherID
Journal of Geophysical Research 108, IPM 3-1-IPM 3-8 (2003). doi:10.1029/2002JD002932
ResearcherID
[1] The photolysis frequency of NO2, j(NO2), was determined by various instrumental techniques and calculated using a number of radiative transfer models for 4 days in June 1998 at the International Photolysis Frequency Measurement and Modeling Inter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b5c7ca571084814a0a0a789fb6614732
https://elib.dlr.de/10076/
https://elib.dlr.de/10076/
Autor:
Dieter H. Ehhalt, U. Schmidt, R. Bauer, E. P. Röth, J. Zimmermann, U. Platt, Franz Rohrer, M. Wallasch, H. London, K. P. Müller, D. Poppe, D. Brüning, Andreas Hofzumahaus, R. Neuroth, Ralf Koppmann, Theo Brauers, H. Koch, Jochen Rudolph, J. Callies, F. J. Johnen, A. Khedim, H.-P. Dorn, C. Plass-Dülmer
Publikováno v:
Journal of Geophysical Research. 99:16633
The influence of chemical precursors and sunlight on the atmospheric OH abundance is investigated by a comparison of locally measured tropospheric OH with model calculations. The latter are based on the gas phase reaction mechanism of the regional ac
Publikováno v:
Journal of Atmospheric Chemistry. 1:27-51
The relative variances in stratospheric observations of longlived trace gases CH4, N2O, CF2Cl2, CFCl3 show large differences. These differences are greatly reduced when the local mean standard deviation is normalized to the local vertical gradient. T