Removing spurious inertial instability signals from gravity wave temperature perturbations using spectral filtering methods

Strube, Cornelia; Ern, Manfred; Preusse, Peter; Riese, Martin

doi:https://doi.org/10.5194/amt-13-4927-2020

Articles | Volume 13, issue 9

https://doi.org/10.5194/amt-13-4927-2020

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

https://doi.org/10.5194/amt-13-4927-2020

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

Articles | Volume 13, issue 9

Research article

|

18 Sep 2020

Research article |

| 18 Sep 2020

Removing spurious inertial instability signals from gravity wave temperature perturbations using spectral filtering methods

Cornelia Strube, Manfred Ern, Peter Preusse, and Martin Riese

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Final revised paper (published on 18 Sep 2020)
Preprint (discussion started on 27 Apr 2020)

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

SC1: 'Small correction and some questions', Petr Šácha, 30 Apr 2020
- AC1: 'Response to the Short Comment by Petr Šácha', Cornelia Strube, 12 Jul 2020
RC1: 'Review', Anonymous Referee #2, 14 May 2020
- AC2: 'Response to Comments by Anonymous Referee \#2', Cornelia Strube, 12 Jul 2020
RC2: 'Comments on Removing Spurious Inertial Instability Signals from Gravity Wave Temperature Perturbations Using Spectral Filtering Methods', Anonymous Referee #1, 19 May 2020
- AC3: 'Response to Comments by Anonymous Referee $\#$1', Cornelia Strube, 12 Jul 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

AR by Cornelia Strube on behalf of the Authors (12 Jul 2020) Author's response Manuscript

ED: Publish as is (26 Jul 2020) by Robert Sica

Short summary

We present how inertial instabilities affect gravity wave background removal filters on different temperature data sets. Vertical filtering has to remove a part of the gravity wave spectrum to eliminate inertial instability remnants, while horizontal filtering leaves typical gravity wave scales untouched. In addition, we show that it is possible to separate inertial instabilities from gravity wave perturbations for infrared limb-sounding satellite profiles using a cutoff zonal wavenumber of 6.