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Characteristics of wave induced oscillations in mesospheric O 2 emission intensity and temperatures
Author(s) -
Taori A.,
Taylor M.
Publication year - 2006
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 - 10.1029/2005gl024442
Subject(s) - monochromatic color , oscillation (cell signaling) , atmospheric sciences , intensity (physics) , gravitational wave , physics , gravity wave , mesosphere , environmental science , wavelength , astrophysics , chemistry , optics , stratosphere , biochemistry
Gravity wave and tidal signatures in mesospheric emissions can be characterized using a quantity η which relates the wave intensity perturbations to the corresponding induced temperature oscillation. The quasi‐monochromatic wave induced oscillations in the O 2 (0–1) atmospheric emission observed from Maui, Hawaii (20.8 N, 156.2 W) have been investigated for the periods ranging from 1–12 hours. Our results clearly show that ∣η∣ increases from 0.5 to 10 with the increasing wave periods while the phase Ø exhibits a decreasing trend (+75 to −100°). When compared with model, observed trends agree well while significant differences in the absolute values are noted, possibly due to complex chemical and dynamical processes at mesospheric altitudes.