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Observation of the two‐day wave near the southern summer stratopause
Author(s) -
Limpasuvan Varavut,
Leovy Conway B.
Publication year - 1995
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 - 10.1029/95gl02263
Subject(s) - stratopause , wavenumber , microwave limb sounder , amplitude , southern hemisphere , atmospheric sciences , zonal and meridional , latitude , middle latitudes , geology , stratosphere , northern hemisphere , climatology , mesosphere , physics , geodesy , quantum mechanics , optics
Temperature and H 2 O measurements from the Upper Atmospheric Research Satellite Microwave Limb Sounder (UARS MLS) data sets during southern hemisphere summer of 1991–92 are analyzed using the asynoptic mapping method. Results show a prominent wavenumber 3 two‐day wave confined to latitudes between 60°S and 4°N and to altitudes above 2 hPa. The temperature wave amplitude increases upward to the upper limit of the observations and maximizes at 2.0 K near 0.465 hPa. The H 2 O wave amplitude reaches a maximum of 0.25 ppmv near 1 hPa. Evidence suggestive of wave breaking and meridional mixing associated with the interaction between this wave and a lower frequency wavenumber 1 is shown.