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What are the driving parameters for Large Scale Travelling Ionospheric Disturbances? A statistical analysis for the European region

Borries, Claudia and Ferreira, Arthur Amaral and Borges, Renato Alves (2022) What are the driving parameters for Large Scale Travelling Ionospheric Disturbances? A statistical analysis for the European region. COSPAR Athens, Athen, Griechenland.

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The conditions in the thermosphere and ionosphere need to be monitored and predicted, because they are impacting many technological systems like global navigation systems and satellite orbit prediction and the performance of satellite communication links. The thermosphere-ionosphere system gets severely disturbed during the passage of disturbances in the solar wind and inter planetary magnetic field, when large amounts of energy are transferred into the Earth system. The generation of strong electric fields and sudden intensive thermosphere heating in the auroral region are major consequent forces, which drive significant changes in the thermosphere-ionosphere system. A typical phenomenon during these storm conditions are large scale atmospheric gravity waves, which are generated by the heating processes in the auroral region and spread propagate equatorward. Commonly, these large-scale atmospheric gravity waves are measured and analysed via their ionosphere signature, the Large Scale Travelling Ionospheric Disturbances (LSTIDs). There have been a few statistical studies, describing the typical speed, wavelength and direction of LSTIDs. Also, a few attempts have been made to correlate the LSTID characteristics with geomagnetic activity indices. LSTID amplitudes and occurrence rate have been shown to be correlated with the Auroral Electrojet index (AE), the geomagnetic perturbation index Kp and the magnitude of field aligned currents. Most of these statistical studies have been performed more than a decade ago. Today, we are using the LSTID observations of two decades, to statistically analyse the correlation of LSTID amplitudes with the most relevant geomagnetic indices and geoeffective parameters based on solar wind observations. The question motivating our study is: Can we predict the occurrence and amplitude of LSTIDs? We are presenting the correlation results, which show best correlation for solar wind- magnetosphere coupling functions, and demonstrate initial prediction capabilities, which can be generated based on this knowledge.

Item URL in elib:https://elib.dlr.de/187656/
Document Type:Conference or Workshop Item (Speech)
Title:What are the driving parameters for Large Scale Travelling Ionospheric Disturbances? A statistical analysis for the European region
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Borries, ClaudiaUNSPECIFIEDhttps://orcid.org/0000-0001-9948-3353UNSPECIFIED
Borges, Renato AlvesUNSPECIFIEDhttps://orcid.org/0000-0002-6072-8621UNSPECIFIED
Date:22 July 2022
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:ionosphere, storms, tid, prediction, drivers
Event Title:COSPAR Athens
Event Location:Athen, Griechenland
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Project Space weather research
Location: Neustrelitz
Institutes and Institutions:Institute for Solar-Terrestrial Physics
Deposited By: Borries, Dr. Claudia
Deposited On:01 Aug 2022 09:59
Last Modified:01 Aug 2022 09:59

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