Speaker
Description
The Mesosphere and Lower Thermosphere (MLT) region of the upper atmosphere is an essential atmospheric layer that significantly influences energy exchange, atmospheric dynamics, and space weather interactions. Comprehending the temperature of the MLT is essential, as this region acts as a critical interface between Earth's atmosphere and outer space, with its temperature directly affecting several physical and environmental processes. Moreover, the MLT temperature data interprets the vertical transfer of energy and momentum in the atmosphere. The Thermosphere Ionosphere Mesosphere Energetics Dynamics/Sounding of the Atmosphere using Broadband Emission Radiometry (TIMED/SABER) instrument is a crucial observational tool for examining the MLT area, offering long-term temperature observations to analyze trends and fluctuations in atmospheric parameters. The primary objective of this research is to examine the trend and variability of the thermal structure in the MLT region utilizing data collected by the TIMED/SABER satellite in Sutherland, South Africa. The TrendRUN model simulates and elucidates the long-term thermal structure trends in the MLT, employing realistic external forcings such as solar cycle variability, El Niño-Southern Oscillation, Quasi-Biennial Oscillation (QBO), yearly cycle, and semiannual cycle. The Mann-Kendall and Sequential Mann-Kendall nonparametric trend test methods are employed to extract trends. This research demonstrates that SABER data imply prolonged cooling trends, especially in the mesosphere, along with increasing CO₂ concentrations.
| Apply for student award at which level: | MSc |
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| Consent on use of personal information: Abstract Submission | Yes, I ACCEPT |
