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Akademický článek

Challenge of modelling GLORIA observations of upper troposphere–lowermost stratosphere trace gas and cloud distributions at high latitudes: a case study with state-of-the-art models

Autor: F. Haenel, W. Woiwode, J. Buchmüller, F. Friedl-Vallon, M. Höpfner, S. Johansson, F. Khosrawi, O. Kirner, A. Kleinert, H. Oelhaf, J. Orphal, R. Ruhnke, B.-M. Sinnhuber, J. Ungermann, M. Weimer, P. Braesicke

Publikováno v: Atmospheric Chemistry and Physics, Vol 22, Pp 2843-2870 (2022)

Water vapour and ozone are important for the thermal and radiative balance of the upper troposphere (UT) and lowermost stratosphere (LMS). Both species are modulated by transport processes. Chemical and microphysical processes affect them differently

Externí odkaz: https://doaj.org/article/c6b9fd3b2bfb49b19a0845d243c709af

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Akademický článek

The Michelson Interferometer for Passive Atmospheric Sounding global climatology of BrONO2 2002–2012: a test for stratospheric bromine chemistry

Autor: M. Höpfner, O. Kirner, G. Wetzel, B.-M. Sinnhuber, F. Haenel, S. Johansson, J. Orphal, R. Ruhnke, G. Stiller, T. von Clarmann

Publikováno v: Atmospheric Chemistry and Physics, Vol 21, Pp 18433-18464 (2021)

We present the first observational dataset of vertically resolved global stratospheric BrONO2 distributions from July 2002 until April 2012 and compare them to results of the atmospheric chemical climate model ECHAM/MESSy Atmospheric Chemistry (EMAC)

Externí odkaz: https://doaj.org/article/5765c66f3c254481ad34b462a8dea2e7

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Akademický článek

Mountain-wave-induced polar stratospheric clouds and their representation in the global chemistry model ICON-ART

Autor: M. Weimer, J. Buchmüller, L. Hoffmann, O. Kirner, B. Luo, R. Ruhnke, M. Steiner, I. Tritscher, P. Braesicke

Publikováno v: Atmospheric Chemistry and Physics, Vol 21, Pp 9515-9543 (2021)

Polar stratospheric clouds (PSCs) are a driver for ozone depletion in the lower polar stratosphere. They provide surface for heterogeneous reactions activating chlorine and bromine reservoir species during the polar night. The large-scale effects of

Externí odkaz: https://doaj.org/article/b52efadd56914470b4e49185a9f54c31

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Akademický článek

Pollution trace gases C2H6, C2H2, HCOOH, and PAN in the North Atlantic UTLS: observations and simulations

Autor: G. Wetzel, F. Friedl-Vallon, N. Glatthor, J.-U. Grooß, T. Gulde, M. Höpfner, S. Johansson, F. Khosrawi, O. Kirner, A. Kleinert, E. Kretschmer, G. Maucher, H. Nordmeyer, H. Oelhaf, J. Orphal, C. Piesch, B.-M. Sinnhuber, J. Ungermann, B. Vogel

Publikováno v: Atmospheric Chemistry and Physics, Vol 21, Pp 8213-8232 (2021)

Measurements of the pollution trace gases ethane (C2H6), ethyne (C2H2), formic acid (HCOOH), and peroxyacetyl nitrate (PAN) were performed in the North Atlantic upper troposphere and lowermost stratosphere (UTLS) region with the airborne limb imager

Externí odkaz: https://doaj.org/article/4256b9b68f1d4ece8f7a0afb3146905d

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Akademický článek

Pollution trace gas distributions and their transport in the Asian monsoon upper troposphere and lowermost stratosphere during the StratoClim campaign 2017

Autor: S. Johansson, M. Höpfner, O. Kirner, I. Wohltmann, S. Bucci, B. Legras, F. Friedl-Vallon, N. Glatthor, E. Kretschmer, J. Ungermann, G. Wetzel

Publikováno v: Atmospheric Chemistry and Physics, Vol 20, Pp 14695-14715 (2020)

We present the first high-resolution measurements of pollutant trace gases in the Asian summer monsoon upper troposphere and lowermost stratosphere (UTLS) from the Gimballed Limb Observer for Radiance Imaging of the Atmosphere (GLORIA) during the Str

Externí odkaz: https://doaj.org/article/6670fa1febfb4a59af18d1951b62e8f1

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Akademický článek

On the role of trend and variability in the hydroxyl radical (OH) in the global methane budget

Autor: Y. Zhao, M. Saunois, P. Bousquet, X. Lin, A. Berchet, M. I. Hegglin, J. G. Canadell, R. B. Jackson, M. Deushi, P. Jöckel, D. Kinnison, O. Kirner, S. Strode, S. Tilmes, E. J. Dlugokencky, B. Zheng

Publikováno v: Atmospheric Chemistry and Physics, Vol 20, Pp 13011-13022 (2020)

Decadal trends and interannual variations in the hydroxyl radical (OH), while poorly constrained at present, are critical for understanding the observed evolution of atmospheric methane (CH4). Through analyzing the OH fields simulated by the model en

Externí odkaz: https://doaj.org/article/91c9ff10aee942bbbf3357a0f765b795

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Akademický článek

Projecting ozone hole recovery using an ensemble of chemistry–climate models weighted by model performance and independence

Autor: M. Amos, P. J. Young, J. S. Hosking, J.-F. Lamarque, N. L. Abraham, H. Akiyoshi, A. T. Archibald, S. Bekki, M. Deushi, P. Jöckel, D. Kinnison, O. Kirner, M. Kunze, M. Marchand, D. A. Plummer, D. Saint-Martin, K. Sudo, S. Tilmes, Y. Yamashita

Publikováno v: Atmospheric Chemistry and Physics, Vol 20, Pp 9961-9977 (2020)

Calculating a multi-model mean, a commonly used method for ensemble averaging, assumes model independence and equal model skill. Sharing of model components amongst families of models and research centres, conflated by growing ensemble size, means mo

Externí odkaz: https://doaj.org/article/d2b977218e1a4557b638ade4672f93f9

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Akademický článek

Inter-model comparison of global hydroxyl radical (OH) distributions and their impact on atmospheric methane over the 2000–2016 period

Publikováno v: Atmospheric Chemistry and Physics, Vol 19, Pp 13701-13723 (2019)

The modeling study presented here aims to estimate how uncertainties in global hydroxyl radical (OH) distributions, variability, and trends may contribute to resolving discrepancies between simulated and observed methane (CH4) changes since 2000. A m

Externí odkaz: https://doaj.org/article/ec8dc07f1ffb47e3b6b64bbd13f56b67

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Akademický článek

The effect of atmospheric nudging on the stratospheric residual circulation in chemistry–climate models

Autor: A. Chrysanthou, A. C. Maycock, M. P. Chipperfield, S. Dhomse, H. Garny, D. Kinnison, H. Akiyoshi, M. Deushi, R. R. Garcia, P. Jöckel, O. Kirner, G. Pitari, D. A. Plummer, L. Revell, E. Rozanov, A. Stenke, T. Y. Tanaka, D. Visioni, Y. Yamashita

Publikováno v: Atmospheric Chemistry and Physics, Vol 19, Pp 11559-11586 (2019)

We perform the first multi-model intercomparison of the impact of nudged meteorology on the stratospheric residual circulation using hindcast simulations from the Chemistry–Climate Model Initiative (CCMI). We examine simulations over the period 198

Externí odkaz: https://doaj.org/article/edb13370ff3f45969c709af398b223cd

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