"Comparison of Terdiurnal Tidaloscillations in Mesospheric OH Rotationa" by Michael J. Taylor, W. R. Pendleton Jr. et al.
 

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Comparison of Terdiurnal Tidaloscillations in Mesospheric OH Rotational Temperature and Na Lidar Temperature Measurementsat Mid-latitudes

Document Type

Article

Journal/Book Title/Conference

Earth, Planets and Space

Volume

51

Publication Date

1999

First Page

877

Abstract

Results from two different instrumental techniques, an Na Wind/Temperature Lidar and an OH Mesospheric Temperature Mapper, have been combined to investigate the occurrence and properties of the mid-latitude terdiurnal (8-hr) tide at near mesopause altitudes (80–105 km). High-resolution Na lidar measurements were taken throughout the diurnal and annual cycle (1996–98) at Urbana, Illinois (40°N, 88°W) to characterize the seasonal behavior of the 24, 12, 8 and 6-hr tides. Complementary measurements using a recently developed CCD imager capable of mapping OH temperature (at ∼87 km altitude) were made from Bear Lake Observatory, Utah (41.9°N, 111.6°W) and Ft. Collins, Colorado (40.6°N, 105°W) within the same time period. The “mean day” lidar data for the spring and fall periods investigated here each indicate an average amplitude variation of ∼2–5 K over the depth of the OH layer but distinct phases of

https://doi.org/10.1186/BF03353246

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