Articles | Volume 23, issue 21
https://doi.org/10.5194/acp-23-13973-2023
© Author(s) 2023. This work is distributed under
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the Creative Commons Attribution 4.0 License.
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https://doi.org/10.5194/acp-23-13973-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
09 Nov 2023
Research article |
| 09 Nov 2023
| 09 Nov 2023
Evaluating F2-region long-term trends using the International Reference Ionosphere (IRI) model: is this a feasible approximation for experimental trends?
Bruno S. Zossi
INFINOA, CONICET-UNT, Tucumán, 4000, Argentina
Laboratorio de Ionosfera, Atmosfera Neutra y Magnetosfera (LIANM), Facultad de Ciencias Exactas y Tecnología (FACET), Universidad Nacional de Tucumán (UNT), Tucumán, 4000, Argentina
Trinidad Duran
Departamento de Física, Universidad Nacional del Sur (UNS), Bahía Blanca, 8000, Argentina
Instituto de Física del Sur (CONICET-UNS), Bahía Blanca, 8000, Argentina
Franco D. Medina
INFINOA, CONICET-UNT, Tucumán, 4000, Argentina
Laboratorio de Ionosfera, Atmosfera Neutra y Magnetosfera (LIANM), Facultad de Ciencias Exactas y Tecnología (FACET), Universidad Nacional de Tucumán (UNT), Tucumán, 4000, Argentina
Blas F. de Haro Barbas
INFINOA, CONICET-UNT, Tucumán, 4000, Argentina
Laboratorio de Ionosfera, Atmosfera Neutra y Magnetosfera (LIANM), Facultad de Ciencias Exactas y Tecnología (FACET), Universidad Nacional de Tucumán (UNT), Tucumán, 4000, Argentina
Yamila Melendi
Departamento de Física, Universidad Nacional del Sur (UNS), Bahía Blanca, 8000, Argentina
Instituto de Física del Sur (CONICET-UNS), Bahía Blanca, 8000, Argentina
Ana G. Elias
CORRESPONDING AUTHOR
INFINOA, CONICET-UNT, Tucumán, 4000, Argentina
Laboratorio de Ionosfera, Atmosfera Neutra y Magnetosfera (LIANM), Facultad de Ciencias Exactas y Tecnología (FACET), Universidad Nacional de Tucumán (UNT), Tucumán, 4000, Argentina
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Bruno S. Zossi, Franco D. Medina, Trinidad Duran, Blas F. de Haro Barbas, and Ana G. Elias
EGUsphere, https://doi.org/10.5194/egusphere-2024-2828, https://doi.org/10.5194/egusphere-2024-2828, 2024
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This study explores how the solar Sunspot Number (Sn) compares with other solar indicators like solar radio fluxes in predicting changes in Earth's ionosphere, particularly its critical frequency, over more than 60 years. The work finds that Sn, despite recent fluctuations in other proxies, remains the most stable predictor across all time periods. When adjusting for potential data saturation, Sn outperforms other proxies, providing a more accurate forecast of long-term ionospheric trends.
Trinidad Duran, Bruno S. Zossi, Yamila D. Melendi, Blas F. de Haro Barbas, Fernando S. Buezas, and Ana G. Elías
EGUsphere, https://doi.org/10.5194/egusphere-2024-2479, https://doi.org/10.5194/egusphere-2024-2479, 2024
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Our research investigates how different proxies of solar activity influence long-term trends in the Earth's ionosphere. By analyzing data from two mid-latitude stations up to 2022, we found that the choice of solar activity measures significantly affects trends in ionospheric electron density, while trends in ionospheric height remain more stable. Selecting the correct solar activity measure is crucial for accurate density trend predictions and improving space weather forecasting models.
Mariano Fagre, Bruno S. Zossi, Erdal Yiğit, Hagay Amit, and Ana G. Elias
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Preprint retracted
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Some systems, such as Over the Horizon Radars, use the ionosphere as a reflector for HF radio signals. In this work, HF propagation through the ionosphere is studied for different Earth’s magnetic field configurations during reversals using a numerical ray tracing technique. Our purpose is to highlight possible effects of dipole decrease, which is currently ongoing, on electromagnetic wave propagation through the ionosphere.
Bruno S. Zossi, Franco D. Medina, Trinidad Duran, Blas F. de Haro Barbas, and Ana G. Elias
EGUsphere, https://doi.org/10.5194/egusphere-2024-2828, https://doi.org/10.5194/egusphere-2024-2828, 2024
Short summary
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This study explores how the solar Sunspot Number (Sn) compares with other solar indicators like solar radio fluxes in predicting changes in Earth's ionosphere, particularly its critical frequency, over more than 60 years. The work finds that Sn, despite recent fluctuations in other proxies, remains the most stable predictor across all time periods. When adjusting for potential data saturation, Sn outperforms other proxies, providing a more accurate forecast of long-term ionospheric trends.
Trinidad Duran, Bruno S. Zossi, Yamila D. Melendi, Blas F. de Haro Barbas, Fernando S. Buezas, and Ana G. Elías
EGUsphere, https://doi.org/10.5194/egusphere-2024-2479, https://doi.org/10.5194/egusphere-2024-2479, 2024
Short summary
Short summary
Our research investigates how different proxies of solar activity influence long-term trends in the Earth's ionosphere. By analyzing data from two mid-latitude stations up to 2022, we found that the choice of solar activity measures significantly affects trends in ionospheric electron density, while trends in ionospheric height remain more stable. Selecting the correct solar activity measure is crucial for accurate density trend predictions and improving space weather forecasting models.
Mariano Fagre, Bruno S. Zossi, Erdal Yiğit, Hagay Amit, and Ana G. Elias
Ann. Geophys. Discuss., https://doi.org/10.5194/angeo-2019-27, https://doi.org/10.5194/angeo-2019-27, 2019
Preprint retracted
Short summary
Short summary
Some systems, such as Over the Horizon Radars, use the ionosphere as a reflector for HF radio signals. In this work, HF propagation through the ionosphere is studied for different Earth’s magnetic field configurations during reversals using a numerical ray tracing technique. Our purpose is to highlight possible effects of dipole decrease, which is currently ongoing, on electromagnetic wave propagation through the ionosphere.
Related subject area
Subject: Climate and Earth System | Research Activity: Atmospheric Modelling and Data Analysis | Altitude Range: Mesosphere | Science Focus: Physics (physical properties and processes)
Trends in the high-latitude mesosphere temperature and mesopause revealed by SABER
Xiao Liu, Jiyao Xu, Jia Yue, Yangkun Liu, and Vania F. Andrioli
Atmos. Chem. Phys., 24, 10143–10157, https://doi.org/10.5194/acp-24-10143-2024, https://doi.org/10.5194/acp-24-10143-2024, 2024
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Disagreement in long-term trends in the high-latitude mesosphere temperature should be elucidated using one coherent measurement over a long period. Using SABER measurements at high latitudes and binning the data based on yaw cycle, we focus on long-term trends in the mean temperature and mesopause in the high-latitude mesosphere–lower-thermosphere region, which has been rarely studied via observations but is more sensitive to dynamic changes.
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Short summary
The International Reference Ionosphere (IRI) is a widely used ionospheric empirical model based on observations from a worldwide network of ionospheric stations. It is reasonable, then, to expect that it captures long-term changes in ionospheric parameters linked to trend forcings like greenhouse gases increasing concentration and the Earth's magnetic field secular variation. We show that the IRI model can be a valuable tool for obtaining preliminary approximations of experimental trends.
The International Reference Ionosphere (IRI) is a widely used ionospheric empirical model based...
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