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Initial observations of polar mesospheric summer echoes using the EISCAT Svalbard Radar
Author(s) -
Hall C. M.,
Röttger J.
Publication year - 2001
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2000gl003821
Subject(s) - polar , ultra high frequency , high latitude , latitude , radar , atmospheric sciences , mesosphere , geology , scattering , physics , remote sensing , meteorology , environmental science , geophysics , geodesy , astronomy , optics , telecommunications , stratosphere , computer science
Polar Mesospheric Summer Echoes (PMSE) have been observed at various frequencies from MF to UHF and at various latitudes. Here, we report the observation of PMSE over Svalbard (79°N) at 500 MHz. Although PMSE have been reported earlier at such high latitude at VHF (notably around 50 MHz), they had hitherto not been reported at such high frequency as 500 MHz. Furthermore, this observation represents the first one using a frequency between 224MHz and 933MHz. The PMSE scattering mechanism is still open to debate and is certainly frequency dependent: the new observations at 500 MHz will help to identify the transition frequency between different mechanisms.