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Characteristics of F2‐layer planetary wave–type oscillations in northern middle and high latitudes during 2002 to 2008

Borries, Claudia and Hoffmann, Peter (2010) Characteristics of F2‐layer planetary wave–type oscillations in northern middle and high latitudes during 2002 to 2008. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (A00G10), pp. 1-9. Wiley. DOI: 10.1029/2010JA015456 ISSN 2169-9380

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Official URL: http://www.agu.org/pubs/crossref/2010/2010JA015456.shtml

Abstract

A first description of the characteristics of the F2-layer ionosphere oscillations with periods between 2 and 30 days (so-called planetary wave–type oscillations, PWTO) is derived using regional maps of total electron content (TEC), covering the northern hemisphere from 50°N to the North Pole. Oscillations forced by quasiperiodic variations of solar signals (e.g., extreme ultraviolet irradiation and solar wind) are identified and separated using wavelet transformation. It is found that up to 50% of the PWTO intensity in the F2-layer ionosphere occur due to solar variability. The signals that are not obviously related to solar variability are spectrally decomposed to characterize oscillations by their period and wave number. Climatological analyses of the occurring oscillations in TEC reveal similarities to stratospheric planetary waves (PW). These are typical periods of PW, the strongest wave activity during winter and the enhancement of the wave activity at similar latitudes. But there are also major differences to stratospheric PW. In the ionosphere zonal mean oscillations are dominant, stationary waves are not observed, and the dominant periods are shorter than the typical periods of PW in the stratosphere. However, the obtained results are in good agreement with recent numerical modeling results that showed no stationary wave propagation into the F2-region ionosphere and only fast, short-period waves that propagate up to the lower thermosphere.

Item URL in elib:https://elib.dlr.de/66921/
Document Type:Article
Title:Characteristics of F2‐layer planetary wave–type oscillations in northern middle and high latitudes during 2002 to 2008
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Borries, ClaudiaUNSPECIFIEDUNSPECIFIED
Hoffmann, PeterInstitute for Meteorology, University of LeipzigUNSPECIFIED
Date:25 November 2010
Journal or Publication Title:JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:Yes
DOI :10.1029/2010JA015456
Page Range:pp. 1-9
Publisher:Wiley
ISSN:2169-9380
Status:Published
Keywords:Ionospheric irregularities, Ionosphere/atmosphere interactions, Solar radiation and cosmic ray effects
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Vorhaben Ionosphärenerkundung (old)
Location: Neustrelitz
Institutes and Institutions:Institute of Communication and Navigation > Navigation
Deposited By: Borries, Dr. Claudia
Deposited On:06 Dec 2010 09:54
Last Modified:08 Mar 2018 18:35

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