Neap tides occur during first quarter moon and third quarter moon. Which of the following statements is/are true regarding neap tides Neap tides occur when there is a small tidal range. This suggests the dominant role of stratospheric ozone in the variations of upper atmospheric tides. There are two lunar tidal bulges and two solar tidal bulges. Besides, the semidiurnal tidal variation shows clearly 60 day variability as shown by the stratospheric ozone. While the sun is larger (generating more gravity), its much further from Earth and therefore has. This explains the additional summer maximum observed in the seasonal variation of mesospheric tides over low-latitude stations. The moon plays the dominant role in generating our tides. We found that the migrating tides show semiannual variation, where as a nonmigrating diurnal tide DW2 shows maximum during summer. Solar semidiurnal tides in ΔH have larger amplitudes than lunar tides over polar stations, Mawson and Godhavn.Plain Language SummaryIn this paper, the variations of solar and lunar tides in a few ionospheric parameters during the years 20 and during a disturbed winter are presented. but this torque is currently far smaller than lunar and solar solid body. Lunar tidal amplitudes in changes in horizontal component of geomagnetic field (ΔH) are larger over Tirunelveli, a station near dip equator. The effect of thermal tides in planetary atmospheres on rotation has long been. Solar tides in TEC and equatorial electrojet strength over Tirunelveli vary with the time scale of 60 days during October 2009-March 2010 similar to ozone mass mixing ratio at 10 hPa, and this confirms the vital role of ozone in tidal variabilities in ionospheric parameters. Among solar nonmigrating tides, SW1, TW2, and DS0 show larger enhancements. During the SSW, except TW3, the migrating tides DW1 and SW2 show considerable enhancements. DW2 shows larger amplitudes during summer months. The ionospheric lunar tides would subsequently be enhanced due to the larger lunar tide in MLT neutral winds. The solar migrating tides DW1 and SW2 show semiannual variation with larger amplitudes during spring equinox months, whereas TW3 maximizes during northern summer. They also show notable longitudinal variabilities. Lunar semidiurnal tidal amplitudes show sporadic enhancements during northern winter months and negligible amplitudes during northern summer months. They show significant longitudinal variability with larger (smaller) amplitudes over 250☎-150☎ (200☎-250☎). The diurnal and semidiurnal tidal amplitudes show semiannual variation with maximum amplitudes during February-March and September-November, whereas terdiurnal tide is larger during April-September. The Global Positioning System (GPS) deduced total electron content (TEC) data at 15°N (geomagnetic), which is the northern crest region of equatorial ionization anomaly, are used to study solar and lunar tidal variabilities during the years 20 and also during the 2009-2010 winter, when a major sudden stratospheric warming (SSW) event has occurred.
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