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
Abstract
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/ | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Document Type: | Article | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Title: | Climatology and modeling of ionospheric irregularities over Greenland based on empirical orthogonal function method | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Authors: |
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Date: | 2022 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Journal or Publication Title: | Journal of Space Weather and Space Climate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refereed publication: | Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Open Access: | Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Gold Open Access: | Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
In SCOPUS: | Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
In ISI Web of Science: | Yes | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
DOI: | 10.1051/swsc/2022022 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Publisher: | EDP Sciences | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
ISSN: | 2115-7251 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Status: | Published | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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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