Modeling diurnal tidal variability with the National Center for Atmospheric Research thermosphere‐ionosphere‐mesosphere‐electrodynamics general circulation model

Hagan, M. E.; Roble, R. G.

doi:10.1029/2001ja000057

Cited by 151 publications

(149 citation statements)

References 35 publications

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“…Manson et al, 2004a;Aso, 2007), but nowhere better than by Hagan and Roble (2001). Hence and congruent with the softwarelogic used for the production of Fig.…”

Section: Migrating (Mt) and Non-migrating Tides (Nmt)mentioning

confidence: 89%

“…Interactions between the SPW and the MT tides will occur on a global or at least hemispheric scale (Hagan and Roble, 2001), and the temporal and spatial aspects of these interactions are best dealt with using specific models (Aso, 2007; and note the discussions in the Introduction, Sect. 1), and realistic GCMs and specific experiments with year-specific data assimilation.…”

Section: Forcing Of the Stationary Planetary Waves (Spw)mentioning

confidence: 99%

“…Collm, 51 • N; Saskatoon, 52 • N, Adelaide 35 • S, Christchurch 45 • S. These location-specific solar tides are combinations of not only the various tidal Hough modes making up the MT, but also NMT, so that observed tidal amplitudes, phases and vertical wavelengths vary with longitude and season Cierpik et al, 2003), due to the spatial and temporal variability of NMT-forcing by cumulonimbus clouds (e.g. Forbes et al, 2003;Oberheide and Forbes, 2008) and stationary planetary waves (SPW: Hagan and Roble, 2001). …”

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confidence: 99%

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Arctic tidal characteristics at Eureka (80° N, 86° W) and Svalbard (78° N, 16° E) for 2006/07: seasonal and longitudinal variations, migrating and non-migrating tides

et al. 2009

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NMT with s=0, +2 (westward) dominate in non-summer months, while for the semi-diurnal tide NMT with s=+1, +3 occur most often during equinoctial or early summer months. These wave numbers are consistent with stationary planetary wave (SPW)-tidal interactions.Assessment of the global topographic forcing and atmospheric propagation of the SPW (S=1, 2) suggests these winter waves of the Northern Hemisphere are associated with the 78-80 • N diurnal NMT, but that the SPW of the Southern Hemisphere winter have little influence on the summer Arctic tidal fields. In contrast the large SPW and NMT of the Arctic winter may be associated, consistent with Antarctic observations, with the observed occurrence of the semidiurnal NMT in the Antarctic summer.

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“…Manson et al, 2004a;Aso, 2007), but nowhere better than by Hagan and Roble (2001). Hence and congruent with the softwarelogic used for the production of Fig.…”

Section: Migrating (Mt) and Non-migrating Tides (Nmt)mentioning

confidence: 89%

Section: Forcing Of the Stationary Planetary Waves (Spw)mentioning

confidence: 99%

mentioning

confidence: 99%

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Arctic tidal characteristics at Eureka (80° N, 86° W) and Svalbard (78° N, 16° E) for 2006/07: seasonal and longitudinal variations, migrating and non-migrating tides

et al. 2009

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“…ing species) (Forbes et al, 2003), or by nonlinear interactions between the migrating diurnal tide and planetary waves (Hagan and Roble, 2001), or gravity waves (McLandress and Ward, 1994), or by the latent heat release in the troposphere .…”

Section: Y-l Zhou Et Al: Solar Activity Dependence Of Nonmigratingmentioning

confidence: 99%

The solar activity dependence of nonmigrating tides in electron density at low and middle latitudes observed by CHAMP and GRACE

et al. 2016

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Abstract. In this paper we use more than a decade of in situ electron density observations from CHAMP and GRACE satellites to investigate the solar activity dependence of nonmigrating tides at both low and middle latitudes. The results indicate that the longitudinal patterns of F region electron density vary with season and latitude, which are exhibiting a wavenumber 4 (WN4) pattern around September equinox at low latitudes and WN1/WN2 patterns during local summer at the southern/northern middle latitudes. These wave patterns in the F region ionosphere can clearly be seen during both solar maximum and minimum years. At low latitudes the absolute amplitudes of DE3 (contributing to the WN4 pattern) are found to be highly related to the solar activity, showing larger amplitudes during solar maximum years. Similarly a solar activity dependence can also be found for the absolute amplitudes of D0, DW2 and DE1 (contributing to the WN1 and WN2 pattern) at middle latitudes. The relative amplitudes (normalized by the zonal mean) of these nonmigrating tides at both low and middle altitudes show little dependence on solar activity. We further found a clear modulation by the quasi-biennial oscillation (QBO) of the relative DE3 amplitudes in both satellite observations, which is consistent with the QBO dependence as reported for the E region temperatures and zonal wind. It also supports the strong coupling of the low-latitude nonmigrating tidal activity between the E and F regions. However, the QBO dependence cannot be found for the relative amplitudes of the nonmigrating tides at middle latitudes, which implies that these tides are generated in situ at F region altitudes.

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“…They are prompted primarily by the absorption of solar energy by tropospheric water and water vapor, as well as stratospheric ozone (Oberheide et al, 2002). Non-migrating tides are excited for instance by zonal asymmetries (e.g., topography, land-sea differences, longitude dependence of absorbing species) or by nonlinear interactions between the migrating diurnal tide and planetary waves (Hagan and Roble, 2001) or gravity waves (McLandress and Ward, 1994). Another important source for non-migrating tides is the latent heat release in the troposphere .…”

Section: Introductionmentioning

confidence: 99%

Tidal signatures of the thermospheric mass density and zonal wind at midlatitude: CHAMP and GRACE observations

et al. 2015

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Abstract. By using the accelerometer measurements from CHAMP and GRACE satellites, the tidal signatures of the thermospheric mass density and zonal wind at midlatitudes have been analyzed in this study. The results show that the mass density and zonal wind at southern midlatitudes are dominated by a longitudinal wave-1 pattern. The most prominent tidal components in mass density and zonal wind are the diurnal tides D0 and DW2 and the semidiurnal tides SW1 and SW3. This is consistent with the tidal signatures in the F region electron density at midlatitudes as reported by Xiong and Lühr (2014). These same tidal components are observed both in the thermospheric and ionospheric quantities, supporting a mechanism that the non-migrating tides in the upper atmosphere are excited in situ by ion-neutral interactions at midlatitudes, consistent with the modeling results of Jones Jr. et al. (2013). We regard the thermospheric dynamics as the main driver for the electron density tidal structures. An example is the in-phase variation of D0 between electron density and mass density in both hemispheres. Further research including coupled atmospheric models is probably needed for explaining the similarities and differences between thermospheric and ionospheric tidal signals at midlatitudes.

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Modeling diurnal tidal variability with the National Center for Atmospheric Research thermosphere‐ionosphere‐mesosphere‐electrodynamics general circulation model

Cited by 151 publications

References 35 publications

Arctic tidal characteristics at Eureka (80° N, 86° W) and Svalbard (78° N, 16° E) for 2006/07: seasonal and longitudinal variations, migrating and non-migrating tides

Arctic tidal characteristics at Eureka (80° N, 86° W) and Svalbard (78° N, 16° E) for 2006/07: seasonal and longitudinal variations, migrating and non-migrating tides

The solar activity dependence of nonmigrating tides in electron density at low and middle latitudes observed by CHAMP and GRACE

Tidal signatures of the thermospheric mass density and zonal wind at midlatitude: CHAMP and GRACE observations

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