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Weather prediction models can also forecast satellite displacements

Weather prediction models can also forecast satellite displacements
Cartoon about the influence of tropical storm "Bongoyo" on the GRACE-FO satellite orbit via the reflection of solar radiation and thermal emission (Hurricane Felix from Iss, 2007). Credit: Journal of Geophysical Research: Atmospheres (2024). DOI: 10.1029/2023JD040009

New research finds that modern weather models can accurately predict satellite movements due to the energy emitted and reflected by the Earth. In addition to weather prediction, weather models can also help understand and predict how satellites respond to weather events, such as storms.

Researchers at the Institute for Atmospheric and Earth System Research (INAR) at the University of Helsinki have found that modern weather models can accurately predict the energy that Earth emits and reflects into space, which directly affects the movements of low Earth-orbiting (LEO) satellites.

By leveraging these models, the researchers gained insights into how LEO satellites respond to below, such as with tall and reflective clouds. The results were published in the Journal of Geophysical Research in April.

In the study, the researchers utilized numerical weather models. They are sophisticated computer simulators that predict future atmospheric conditions based on current observations and laws of physics.

"Numerical weather models not only simulate weather patterns but also calculate various parameters, including the Earth's energy emissions and reflections under various weather conditions.

"By analyzing these simulations, we sought to understand how changes in weather, such as and storms, influence the movement of satellites, affecting their ability to fulfill their intended duties," says Sanam Motlaghzadeh, lead author of the study and doctoral researcher at INAR.

Improved satellite operations

The significance of the findings lies in their potential to enhance satellite tracking and control, improving the efficiency and reliability of satellite operations.

"Understanding how weather affects satellites also enhances the accuracy of satellite-based measurements used in climate studies. These findings address a critical challenge in satellite data reliability, namely, determining the precise orbits of satellites, on which the weather events have effect," Motlaghzadeh explains.

Satellites play a crucial role in monitoring vegetation, tracking water resources, and observing glacier evolution through various measurement techniques. These measurements, including image capture and height and gravity field measurements, are essential for studying and its impacts.

A better understanding of satellite movements can also aid in climate monitoring and disaster management. Utilizing advanced can further refine satellite-based measurements, facilitating more effective study and mitigation of environmental issues.

"Understanding how satellites interact with Earth's atmosphere offers valuable insights into our planet and how it changes over time. The findings contribute to more accurate satellite-based monitoring of terrestrial , and hence to ," Motlaghzadeh says.

More information: S. Motlaghzadeh et al, Weather‐Induced Satellite Orbit Perturbations, Journal of Geophysical Research: Atmospheres (2024). DOI: 10.1029/2023JD040009

Citation: Weather prediction models can also forecast satellite displacements (2024, April 19) retrieved 29 May 2024 from
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