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A double sodium layer event observed over Wuhan, China by lidar
Author(s) -
Gong S. S.,
Yang G. T.,
Wang J. M.,
Cheng X. W.,
Li F. Q.,
Wan W. X.
Publication year - 2003
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 - 10.1029/2002gl016135
Subject(s) - ionosonde , lidar , sodium , layer (electronics) , geology , earth's magnetic field , digital subscriber line , meteorology , atmospheric sciences , environmental science , remote sensing , materials science , physics , computer science , magnetic field , telecommunications , nanotechnology , electron density , metallurgy , quantum mechanics , electron
A double sodium layer (DSL) structure was observed during the night of June 13, 2000 over Wuhan, China (31°N, 114°E) by our Na lidar. The unique feature of this DSL is that a normal sodium layer at altitudes of 80 ∼ 105 km was accompanied by a secondary sodium layer at altitudes of 105 ∼ 125 km for about 2 hours. The lidar observation result together with that obtained from the nearby ionosonde and geomagnetic equipments are presented. While the exact mechanism responsible for this DSL formation is still unclear, some possible explanations and corresponding observation evidences are discussed.