Computer Science – Sound
Scientific paper
Apr 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....93.3899d&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 93, April 20, 1988, p. 3899-3904.
Computer Science
Sound
21
Annual Variations, Atmospheric Temperature, Equatorial Atmosphere, Satellite Observation, Asymmetry, Atmospheric Circulation, Meridional Flow, Mesosphere, Nimbus 7 Satellite, Stratosphere
Scientific paper
Zonally averaged equatorial temperatures obtained aboard Nimbus 7 by the stratospheric and mesospheric sounder (SAMS) are compared to comparable data obtained from the limb IR monitor of the stratosphere. The SAMS data are shown to confirm the seasonal asymmetry in semiannual wind regimes previously noted in rocketsonde observations near the equator. Two explanations for the asymmetry are considered: (1) an improved Kelvin and gravity wave transmissivity in stronger equatorial easterlies (resulting from planetary Rossby wave momentum transport), implying stronger westerly mean flow acceleration in the first cycle than in the second; and (2) evidence of strong polar-tropical coupling in the northern winter indicating that mean meridional circulations are present on a global scale.
Delisi Donald P.
Dunkerton Timothy J.
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