New insights into Rossby wave packet properties in the extratropical UTLS using GNSS radio occultations

Pilch Kedzierski, Robin; Matthes, Katja; Bumke, Karl

doi:https://doi.org/10.5194/acp-20-11569-2020

Articles | Volume 20, issue 19

https://doi.org/10.5194/acp-20-11569-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/acp-20-11569-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 20, issue 19

Research article

|

12 Oct 2020

Research article |

| 12 Oct 2020

New insights into Rossby wave packet properties in the extratropical UTLS using GNSS radio occultations

Robin Pilch Kedzierski, Katja Matthes, and Karl Bumke

Supplement

https://doi.org/10.5194/acp-20-11569-2020-supplement

Data sets

ERA Interim ECMWF http://apps.ecmwf.int/datasets/data/interim-full-daily/levtype=pl/

The ERA-Interim reanalysis: configuration and performance of the data assimilation system D. P. Dee, S. M. Uppala, A. J. Simmons, P. Berrisford, P. Poli, S. Kobayashi, U. Andrae, M. A. Balmaseda, G. Balsamo, P. Bauer, P. Bechtold, A. C. M. Beljaars, L. van de Berg, J. Bidlot, N. Bormann, C. Delsol, R. Dragani, M. Fuentes, A. J. Geer, L. Haimberger, S. B. Healy, H. Hersbach, E. V. Hólm, L. Isaksen, P. Kållberg, M. Köhler, M. Matricardi, A. P. McNally, B. M. Monge‐Sanz, J.‐J. Morcrette, B.‐K. Park, C. Peubey, P. de Rosnay, C. Tavolato, J.‐N. Thépaut, and F. Vitart https://doi.org/10.1002/qj.828

CDAAC Data Products CDAAC (COSMIC Data Analysis and Archive Center) http://cdaac-www.cosmic.ucar.edu/cdaac/products.html

Extract equatorial waves by filtering in the Wheeler–Kiladis wavenumber-frequency domain C. Schreck https://www.ncl.ucar.edu/Document/Functions/User_contributed/kf_filter.shtml

Model code and software

A Language and Environment for Statistical Computing R Core Team https://www.r-project.org/

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Short summary

Rossby wave packet (RWP) dynamics are crucial for weather forecasting, climate change projections and stratosphere–troposphere interactions. Our study is a first attempt to describe RWP behavior in the UTLS with global coverage directly from observations, using GNSS-RO data. Our novel results show an interesting relation of RWP vertical propagation with sudden stratospheric warmings and provide very useful information to improve RWP diagnostics in models and reanalysis.