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    Academic Journals

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• Satellite data validation: a parametrization of the natural variability of atmospheric mixing ratios.

  Authors:Alexandra Laeng, Thomas von Clarmann, Quentin Errera, Udo Grabowski, and Shawn HonomichlFrom:Atmospheric Measurement Techniques (Vol. 15, Issue 8) Peer-Reviewed

  Apr. 20, 2022158 words Brief article High-resolution model data are used to estimate the statistically typical mixing ratio variabilities of trace species as a function of distance and time separation. These estimates can be used to explain the fact that...

• Truth and uncertainty. A critical discussion of the error concept versus the uncertainty concept.

  Authors:Thomas von Clarmann, Steven Compernolle, and Frank HaseFrom:Atmospheric Measurement Techniques (Vol. 15, Issue 5) Peer-Reviewed

  Mar. 7, 2022145 words Brief article Contrary to the statements put forward in "Evaluation of measurement data - Guide to the expression of uncertainty in measurement", edition 2008 (GUM-2008), issued by the Joint Committee for Guides in Metrology, the...

• The Michelson Interferometer for Passive Atmospheric Sounding global climatology of BrONO.sub.2 2002-2012: a test for stratospheric bromine chemistry.

  Authors:Michael Höpfner, Oliver Kirner, Gerald Wetzel, Björn-Martin Sinnhuber, Florian Haenel, Sören Johansson, et al.From:Atmospheric Chemistry and Physics (Vol. 21, Issue 24) Peer-Reviewed

  Dec. 20, 2021500 words Article We present the first observational dataset of vertically resolved global stratospheric BrONO.sub.2 distributions from July 2002 until April 2012 and compare them to results of the atmospheric chemical climate model...

• Evaluation of water vapour assimilation in the tropical upper troposphere and lower stratosphere by a chemical transport model

  Authors:Swagata Payra, Philippe Ricaud, Rachid Abida, Laaziz El Amraoui, Fabien Carminati, and Thomas von ClarmannFrom:Atmospheric Measurement Techniques (Vol. 9, Issue 9) Peer-Reviewed

  Sept. 6, 2016418 words Brief article The present analysis deals with one of the most debated aspects of the studies on the upper troposphere/lower stratosphere (UTLS), namely the budget of water vapour (H.sub.2 O) at the tropical tropopause. Within the...

• Optimized spectral microwindows for data analysis of the Michelson Interferometer for Passive Atmospheric Sounding on the Environmental Satellite

  Authors:Georg Echle, Thomas von Clarmann, Anu Dudhia, Jean-Marie Flaud, Bernd Funke, Norbert Glatthor, et al.From:Applied Optics (Vol. 39, Issue 30) Peer-Reviewed

  Oct. 20, 2000182 words Article

   Abstract Only

• The application of mean averaging kernels to mean trace gas distributions

  Authors:Thomas von Clarmann and Norbert GlatthorFrom:Atmospheric Measurement Techniques (Vol. 12, Issue 9) Peer-Reviewed

  Sept. 26, 2019165 words Author abstract, Bri...

  To avoid unnecessary data traffic it is sometimes desirable to apply mean averaging kernels to mean profiles of atmospheric state variables. Unfortunately, application of averaging kernels and averaging are not...

• Retrieval of ozone profiles from OMPS limb scattering observations

  Authors:Carlo Arosio, Alexei Rozanov, Elizaveta Malinina, Kai-Uwe Eichmann, Thomas von Clarmann, and John P. BurrowsFrom:Atmospheric Measurement Techniques (Vol. 11, Issue 4) Peer-Reviewed

  Apr. 13, 2018433 words Author abstract, Bri... This study describes a retrieval algorithm developed at the University of Bremen to obtain vertical profiles of ozone from limb observations performed by the Ozone Mapper and Profiler Suite (OMPS). This algorithm is...

• Trends of atmospheric water vapour in Switzerland from ground-based radiometry, FTIR and GNSS data.

  Authors:Leonie Bernet, Elmar Brockmann, Thomas von Clarmann, Niklaus Kämpfer, Emmanuel Mahieu, Christian Mätzler, et al.From:Atmospheric Chemistry and Physics (Vol. 20, Issue 19) Peer-Reviewed

  Oct. 1, 2020343 words Brief article Vertically integrated water vapour (IWV) is expected to increase globally in a warming climate. To determine whether IWV increases as expected on a regional scale, we present IWV trends in Switzerland from ground-based...

• Direct inversion of circulation and mixing from tracer measurements -- Part 1: Method

  Authors:Thomas von Clarmann and Udo GrabowskiFrom:Atmospheric Chemistry and Physics (Vol. 16, Issue 22) Peer-Reviewed

  Nov. 23, 2016251 words Brief article From a series of zonal mean global stratospheric tracer measurements sampled in altitude vs. latitude, circulation and mixing patterns are inferred by the inverse solution of the continuity equation. As a first step,...

• Optimized forward model and retrieval scheme for MIPAS near-real-time data processing

  Authors:Marco Ridolfi, Bruno Carli, Massimo Carlotti, Thomas von Clarmann, Bianca M. Dinelli, Anu Dudhia, et al.From:Applied Optics (Vol. 39, Issue 8) Peer-Reviewed

  Mar. 10, 2000211 words Article

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• NO.sub.y production, ozone loss and changes in net radiative heating due to energetic particle precipitation in 2002-2010

  Authors:Miriam Sinnhuber, Uwe Berger, Bernd Funke, Holger Nieder, Thomas Reddmann, Gabriele Stiller, et al.From:Atmospheric Chemistry and Physics (Vol. 18, Issue 2) Peer-Reviewed

  Jan. 29, 201854 words Brief article, Repor... Byline: Miriam Sinnhuber, Uwe Berger, Bernd Funke, Holger Nieder, Thomas Reddmann, Gabriele Stiller, Stefan Versick, Thomas von Clarmann, Jan Maik Wissing To access, purchase, authenticate, or subscribe to the...

• The SPARC water vapour assessment II: profile-to-profile comparisons of stratospheric and lower mesospheric water vapour data sets obtained from satellites

  Authors:Stefan Lossow, Farahnaz Khosrawi, Michael Kiefer, Kaley A. Walker, Jean-Loup Bertaux, Laurent Blanot, et al.From:Atmospheric Measurement Techniques (Vol. 12, Issue 5) Peer-Reviewed

  May 10, 2019441 words Author abstract, Bri...

  Within the framework of the second SPARC (Stratosphere-troposphere Processes And their Role in Climate) water vapour assessment (WAVAS-II), profile-to-profile comparisons of stratospheric and lower mesospheric water...

• Ground-based ozone profiles over central Europe: incorporating anomalous observations into the analysis of stratospheric ozone trends

  Authors:Leonie Bernet, Thomas von Clarmann, Sophie Godin-Beekmann, Gerard Ancellet, Eliane Maillard Barras, Rene Stubi, et al.From:Atmospheric Chemistry and Physics (Vol. 19, Issue 7) Peer-Reviewed

  Apr. 3, 201954 words Author abstract, Bri... Byline: Leonie Bernet, Thomas von Clarmann, Sophie Godin-Beekmann, Gé,rard Ancellet, Eliane Maillard Barras, René, Stü,bi, Wolfgang Steinbrecht, Niklaus Kä,mpfer, Klemens Hocke To access, purchase,...

• Measurements of global distributions of polar mesospheric clouds during 2005--2012 by MIPAS/Envisat

  Authors:Maya Garcia-Comas, Manuel Lopez-Puertas, Bernd Funke, A. Aythami Jurado-Navarro, Angela Gardini, Gabriele P. Stiller, et al.From:Atmospheric Chemistry and Physics (Vol. 16, Issue 11) Peer-Reviewed

  June 3, 2016358 words Brief article, Repor... We have analysed MIPAS (Michelson Interferometer for Passive Atmopheric Sounding) infrared measurements of PMCs for the summer seasons in the Northern (NH) and Southern (SH) hemispheres from 2005 to 2012. Measurements...

• MIPAS IMK/IAA carbon tetrachloride (CCl.sub.4) retrieval and first comparison with other instruments

  Authors:Ellen Eckert, Thomas von Clarmann, Alexandra Laeng, Gabriele P. Stiller, Bernd Funke, Norbert Glatthor, et al.From:Atmospheric Measurement Techniques (Vol. 10, Issue 7) Peer-Reviewed

  July 28, 2017291 words Author abstract, Bri... MIPAS thermal limb emission measurements were used to derive vertically resolved profiles of carbon tetrachloride (CCl.sub.4). Level-1b data versions MIPAS/5.02 to MIPAS/5.06 were converted into volume mixing ratio...

• Tropopause altitude determination from temperature profile measurements of reduced vertical resolution

  Authors:Peter Braesicke and Thomas von ClarmannFrom:Atmospheric Measurement Techniques (Vol. 12, Issue 7) Peer-Reviewed

  July 29, 2019298 words Brief article, Techn...

  Inference of the lapse rate tropopause or the cold point from temperature profiles of finite vertical resolution entails an uncertainty of the tropopause altitude. For tropical radiosonde profiles the tropopause...

• Overview and update of the SPARC Data Initiative: comparison of stratospheric composition measurements from satellite limb sounders.

  Authors:Michaela I. Hegglin, Susann Tegtmeier, John Anderson, Adam E. Bourassa, Samuel Brohede, Doug Degenstein, et al.From:Earth System Science Data (Vol. 13, Issue 5) Peer-Reviewed

  May 5, 2021538 words Article The Stratosphere-troposphere Processes and their Role in Climate (SPARC) Data Initiative (SPARC, 2017) performed the first comprehensive assessment of currently available stratospheric composition measurements obtained...

• Trend differences in lower stratospheric water vapour between Boulder and the zonal mean and their role in understanding fundamental observational discrepancies

  Authors:Stefan Lossow, Dale F. Hurst, Karen H. Rosenlof, Gabriele P. Stiller, Thomas von Clarmann, Sabine Brinkop, et al.From:Atmospheric Chemistry and Physics (Vol. 18, Issue 11) Peer-Reviewed

  June 14, 2018471 words Author abstract, Bri... Trend estimates with different signs are reported in the literature for lower stratospheric water vapour considering the time period between the late 1980s and 2010. The NOAA (National Oceanic and Atmospheric...

• On the improved stability of the version 7 MIPAS ozone record

  Authors:Alexandra Laeng, Ellen Eckert, Thomas von Clarmann, Michael Kiefer, Daan Hubert, Gabriele Stiller, et al.From:Atmospheric Measurement Techniques (Vol. 11, Issue 8) Peer-Reviewed

  Aug. 10, 2018342 words Author abstract, Bri...

  The Michelson Interferometer for Passive Atmospheric Sounding (MIPAS) was an infrared limb emission spectrometer on the Envisat platform. From 2002 to 2012, it performed pole-to-pole measurements during day and...

• Shift of subtropical transport barriers explains observed hemispheric asymmetry of decadal trends of age of air

  Authors:Gabriele P. Stiller, Federico Fierli, Felix Ploeger, Chiara Cagnazzo, Bernd Funke, Florian J. Haenel, et al.From:Atmospheric Chemistry and Physics (Vol. 17, Issue 18) Peer-Reviewed

  Sept. 21, 2017219 words Author abstract, Bri... In response to global warming, the Brewer--Dobson circulation in the stratosphere is expected to accelerate and the mean transport time of air along this circulation to decrease. This would imply a negative...