Simultaneous three-frequency Na lidar measurements of radial wind and temperature in the mesopause region

Journal Article · Mon Aug 15 04:00:00 EDT 1994 · Geophysical Research Letters

DOI:https://doi.org/10.1029/94GL01417· OSTI ID:28534

She, C Y; Yu, J R ^[1]

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1. Colorado State Univ., Fort Collins, CO (United States)

Using a uniquely constructed acoustooptic frequency shifter to provide three different excitation frequencies, {nu}{sub a} = 652 MHz and {nu}{sub c} = 188 MHz along with {nu}{sub s} = 172 MHz at the spectral slope, the Colorado State Na temperature lidar has been up-graded to permit simultaneous measurements of radial wind and temperature in the mesopause region. Initial observations were made at Ft. Collins, CO (40.6{degrees}N, 105{degrees}W) for three nights in September, 1993 (a total of 20.2 h and 1,204 profiles). With a power-aperture product of 0.06 W-m{sup 2}, the lidar measured RMS uncertainties with spatial and temporal resolutions of 1.5 km and 6 min are assessed to be 1.6 K and 3.1 m/s at the peak of the Na layer. Observational results for the nights of September 3, 4 and 21 (UT) that contain new thermal and dynamical information of the mesopause are presented to show the potential of simultaneous wind/temperature measurements. 13 refs., 4 figs., 1 tab.

• OSTI ID: 28534
• Journal Information: Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 17 Vol. 21; ISSN GPRLAJ; ISSN 0094-8276
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
AMBIENT TEMPERATURE
MESOSPHERE
OPTICAL RADAR
REMOTE SENSING
WIND