Articles | Volume 13, issue 9
Atmos. Meas. Tech., 13, 4927–4945, 2020
https://doi.org/10.5194/amt-13-4927-2020
Atmos. Meas. Tech., 13, 4927–4945, 2020
https://doi.org/10.5194/amt-13-4927-2020

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 et al.

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Latest update: 03 Mar 2021
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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.