Signatures of the Madden–Julian oscillation in middle-atmosphere zonal mean temperature: triggering the interhemispheric coupling pattern

Hoffmann, Christoph G.; Buth, Lena G.; von Savigny, Christian

doi:https://doi.org/10.5194/acp-23-12781-2023

Articles | Volume 23, issue 19

https://doi.org/10.5194/acp-23-12781-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-23-12781-2023

© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 23, issue 19

Research article

|

12 Oct 2023

Research article |

| 12 Oct 2023

Signatures of the Madden–Julian oscillation in middle-atmosphere zonal mean temperature: triggering the interhemispheric coupling pattern

Christoph G. Hoffmann, Lena G. Buth, and Christian von Savigny

Supplement

https://doi.org/10.5194/acp-23-12781-2023-supplement

Data sets

MLS/Aura Level 2 Temperature V005 (ML2T) M. Schwartz, N. Livesey, and W. Read https://doi.org/10.5067/Aura/MLS/DATA2520

Description of a Complete (Interpolated) Outgoing Longwave Radiation Dataset (https://psl.noaa.gov/data/gridded/data.olrcdr.interp.html) B. Liebmann and C. A. Smith http://www.jstor.org/stable/26233278

An Update of the Observed Quasi-Biennial Oscillation of the Stratospheric Winds over the Tropics (https://www.geo.fu-berlin.de/en/met/ag/strat/produkte/qbo/index.html) B. Naujokat https://doi.org/10.1175/1520-0469(1986)043<1873:AUOTOQ>2.0.CO;2

Model code and software

mjoindices: Complete implementation of the OMI MJO index algorithm in Python 3 C. G. Hoffmann https://doi.org/10.5281/zenodo.4852196

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Short summary

The Madden–Julian oscillation is an important feature of weather in the tropics. Although it is mainly active in the troposphere, we show that it systematically influences the air temperature in the layers above, up to about 100 km altitude and from pole to pole. We have linked this to another known far-reaching process, interhemispheric coupling. This is basic research on atmospheric couplings and variability but might also be of interest for intraseasonal weather forecasting models.