Nonmigrating tidal variability in the SABER/TIMED mesospheric ozone

Abstract

This paper presents for the first time evidence showing nonmigrating tidal variations in the mesospheric ozone (O 3 ) derived from the Sounding of the Atmosphere using Broadband Emission Radiometry/Thermosphere-Ionosphere-Mesosphere-Energetics and Dynamics (SABER/TIMED) for a full 11 year period, 2002-2012. The O 3 tidal fields are extracted from the data by the same method as the temperature tides have been derived. The spatial distribution and seasonal variability of the three strongest nonmigrating O 3 tidal variabilities, i.e., SW3, DW2, and DE3, are shown. They demonstrate repeatable presence each year. These O 3 tidal variations have large amplitudes at the seasons and latitudes for which the respective temperature (T) tides amplify, i.e., near the equator and during the equinoxes. The phases of the T and O 3 tidal signatures are out of phase above 95 km. This phase relationship no longer holds for tidal perturbations below about 90 km. The O 3 SW3 and DW2 tidal variations have similar interannual variabilities that appear to follow El Niño-Southern Oscillation variability. The O 3 DE3 tidal field, however, has a clear biyearly interannual variability as the biyearly maxima correlate with the westerly phase of the quasi-biennial oscillation in tropical stratospheric winds but only up to 2008.

Solar Cycle Variability of Nonmigrating Tides in the 5.3 and 15 μm Infrared Cooling of the Thermosphere (100–150 km) from SABER

“…This is consistent with previous findings, for example, Liu et al () reports the modulation of tides in temperature and winds by the QBO using Ground‐to‐topside Atmosphere‐Ionosphere model for Aeronomy. Pancheva et al () have also reported similar findings in the DE3 tidal fields in mesospheric ozone. El Niño‐Southern Oscillation (ENSO) signals can also be observed in the DE3 amplitudes (Figure ).…”

Seasonal Variations of Low‐Latitude Migrating and Nonmigrating Diurnal and Semidiurnal Tides in TIMED‐SABER Temperature and Their Relationship With Source Variations

“…Due to the slow precession of the TIMED satellite, it takes nearly 60 days to get full local time coverage. With the SABER data of the 60 days resolution, there have been several studies on the tides in temperature and ozone in the low and midlatitudes middle atmosphere (Li et al, ; Mukhtarov et al, ; Pancheva et al, ; Xu et al, ; Zhang et al, to state a few). However, the mesospheric tidal variabilities over low latitudes and their relation with the source variabilities are still unclear.…”

Nighttime Mesospheric/Lower Thermospheric Tropical Ozone Response to the 27‐Day Solar Rotational Cycle: ENVISAT‐GOMOS Satellite Observations Versus HAMMONIA Idealized Chemistry‐Climate Model Simulations

“…This secondary ozone maximum (as compared to the original stratospheric ozone maximum) results from the combined effects of the atomic oxygen maximum at the mesopause and the prevailing very low temperature that affect chemical rate coefficients and atmospheric density (Smith & Marsh, ). Above 80 km, there is a very clear semiannual oscillation signal marked by the highest ozone values seen around the equinox times, when the diurnal tide amplitude is largest (Pancheva et al, ; Smith et al, ). Using a migrating diurnal tide model, Smith et al () demonstrated that the associated upward motions cool the air adiabatically and bring low concentrations of atomic oxygen and hydrogen from below.…”