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Climatology and modeling of ionospheric irregularities over Greenland based on empirical orthogonal function method

Jin, Yaqi and Clausen, Lasse B.N. and Miloch, Wojciech J. and Høeg, Per and Jarmołowski, Wojciech and Wielgosz, Paweł and Paziewski, Jacek and Milanowska, Beata and Hoque, Mohammed Mainul and Berdermann, Jens and Lyu, Haixia and Hernández-Pajares, Manuel and García-Rigo, Alberto (2022) Climatology and modeling of ionospheric irregularities over Greenland based on empirical orthogonal function method. Journal of Space Weather and Space Climate. EDP Sciences. doi: 10.1051/swsc/2022022. ISSN 2115-7251.

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Official URL: https://www.swsc-journal.org/articles/swsc/full_html/2022/01/swsc210081/swsc210081.html


This paper addresses the long-term climatology (over two solar cycles) of total electron content (TEC) irregularities from a polar cap station (Thule) using the rate of change of the TEC index (ROTI). The climatology reveals variabilities over different time scales, i.e., solar cycle, seasonal, and diurnal variations. These variations in different time scales can be explained by different drivers/contributors. The solar activity (represented by the solar radiation index F10.7P) dominates the longest time scale variations. The seasonal variations are controlled by the interplay of the energy input into the polar cap ionosphere and the solar illumination that damps the amplitude of ionospheric irregularities. The diurnal variations (with respect to local time) are controlled by the relative location of the station with respect to the auroral oval. We further decompose the climatology of ionospheric irregularities using the empirical orthogonal function (EOF) method. The first four EOFs could reflect the majority (99.49%) of the total data variability. A climatological model of ionospheric irregularities is developed by fitting the EOF coefficients using three geophysical proxies (namely, F10.7P, Bt, and Dst). The data-model comparison shows satisfactory results with a high Pearson correlation coefficient and adequate errors. Additionally, we modeled the historical ROTI during the modern grand maximum dating back to 1965 and made the prediction during solar cycle 25. In such a way, we can directly compare the climatic variations of the ROTI activity across six solar cycles.

Item URL in elib:https://elib.dlr.de/189043/
Document Type:Article
Title:Climatology and modeling of ionospheric irregularities over Greenland based on empirical orthogonal function method
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Jin, YaqiYaqi Jin <yaqi.jin (at) fys.uio.no>UNSPECIFIED
Clausen, Lasse B.N.Lasse Clausen <lasse.clausen (at) fys.uio.no>UNSPECIFIED
Miloch, Wojciech J.Wojciech Jacek Miloch <w.j.miloch (at) fys.uio.no>UNSPECIFIED
Høeg, PerPer Høeg <per.hoeg (at) fys.uio.no>UNSPECIFIED
Jarmołowski, WojciechWojciech Jarmolowski <wojciech.jarmolowski (at) uwm.edu.pl>UNSPECIFIED
Wielgosz, PawełPaweł Wielgosz UWM <pawel.wielgosz (at) uwm.edu.pl>UNSPECIFIED
Paziewski, JacekJacek Paziewski <jacek.paziewski (at) uwm.edu.pl>UNSPECIFIED
Milanowska, BeataBeata Milanowska <milanowska.beata (at) gmail.com>UNSPECIFIED
Hoque, Mohammed MainulMainul.Hoque (at) dlr.deUNSPECIFIED
Berdermann, JensJens.Berdermann (at) dlr.dehttps://orcid.org/0000-0002-3308-4584
Lyu, HaixiaHaixia Lyu <haixia.lyu (at) upc.edu>UNSPECIFIED
Hernández-Pajares, ManuelManuel Hernandez-Pajares <manuel.hernandez (at) upc.edu>UNSPECIFIED
García-Rigo, AlbertoAlberto <alberto.garcia.rigo (at) upc.edu>UNSPECIFIED
Journal or Publication Title:Journal of Space Weather and Space Climate
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Publisher:EDP Sciences
Keywords:Ionospheric irregularities / EOF / modeling / space weather / ROTI
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 - Solar-Terrestrial Physics SO
Location: Neustrelitz
Institutes and Institutions:Institute for Solar-Terrestrial Physics > Space Weather Observation
Deposited By: Hoque, Mohammed Mainul
Deposited On:31 Oct 2022 18:31
Last Modified:31 Oct 2022 18:31

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