Variability of the Brunt-Väisälä frequency at the OH ∗ -airglow layer height at low and midlatitudes
作者： Sabine Wüst , Michael Bittner , Jeng-Hwa Yee , Martin G. Mlynczak , James M. Russell III
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摘要: Abstract. Airglow spectrometers as they are operated within the Network for Detection of Mesospheric Change (NDMC, https://ndmc.dlr.de , example, allow derivation rotational temperatures which equivalent to kinetic temperature, local thermodynamic equilibrium provided. Temperature variations at height airglow layer amongst others caused by gravity waves. However, do not deliver vertically-resolved temperature information. This is an obstacle calculation density wave potential energy from these measurements. As Wust et al. (2016) showed, can be estimated data OH* if co-located TIMED-SABER (Thermosphere Ionosphere Mesosphere Energetics Dynamics, Sounding Atmosphere using Broadband Emission Radiometry) measurements available since Brunt-Vaisala frequency. If available, a climatology frequency alternative. Based on 17 years (2002–2018) such provided here and latitudinal longitudinal grid 10° × 20° mid low latitudes. Additionally, climatologies thickness calculated.
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