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dc.contributor.author
Azpilicueta, Francisco Javier
dc.contributor.author
Nava, Bruno
dc.date.available
2022-08-11T15:43:18Z
dc.date.issued
2021-06
dc.identifier.citation
Azpilicueta, Francisco Javier; Nava, Bruno; Studying the winter anomaly with altimeter-derived TEC data; Elsevier; Advances in Space Research; 68; 8; 6-2021; 3391-3402
dc.identifier.issn
0273-1177
dc.identifier.uri
http://hdl.handle.net/11336/165204
dc.description.abstract
The ionospheric Winter Anomaly (WA) is a phenomenon discovered almost 100 years ago. It can be defined as the situations in which over a given location the winter ionization level is larger than the summer ionization level, for approximately the same solar activity conditions. Along the decades, a lot of studies have been carried out and relevant theories have been formulated to explain this phenomenon, but some aspects of the nature and physical principles of the WA are still a matter of discussion. The first objective of this work was to introduce a new technique for studying the WA, at any given location over the Oceans, based on the 27-year series of altimeter (TOPEX, Jason1, Jason 2 and Jason3 satellites)-derived Total Electron Content (TEC) data. The second objective of this work was to validate the new technique by presenting a comparative analysis between the results obtained with the new technique and those already published. This goal has been accomplished by studying the WA events over the 50°N and 50°S geographic parallels using the 27-year long altimeter data series. The results have indicated clear and systematic WA occurrences over the Northern Hemisphere and a more complex situation over the Southern Hemisphere, with two regions having different behaviors. These results are in full agreement with the findings published in relevant previous works. The last objective of this work was to present some original findings related to WA events. Taking advantage of the new technique, it has been shown that the WA might be interpreted as a high solar activity period consequence of a yearly periodic phenomenon. This phenomenon is always present, also during low solar activity years, even when WA effects are not visible. During winters over the Southern Hemisphere, it systematically produces (at any solar activity level) low maximum TEC values in the (180°E?360°E) longitudinal region and high maximum TEC values in the (0°E?180°E) longitudinal sector. Precisely, this last sector matches with the well-known region over which WA events are observed for high solar activity.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
ALTIMETRY SATELLITES
dc.subject
IONOSPHERIC WINTER ANOMALY
dc.subject
JASON
dc.subject
TEC
dc.subject
TOPEX
dc.subject.classification
Meteorología y Ciencias Atmosféricas
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Studying the winter anomaly with altimeter-derived TEC data
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-08-03T18:12:38Z
dc.journal.volume
68
dc.journal.number
8
dc.journal.pagination
3391-3402
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Azpilicueta, Francisco Javier. Universidad Nacional de La Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina
dc.description.fil
Fil: Nava, Bruno. The Abdus Salam. International Centre for Theoretical Physics; Italia. The Abdus Salam; Italia
dc.journal.title
Advances in Space Research
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.asr.2021.06.008
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0273117721004634
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