Lidar observation of the mesospheric sodium layer over Urbana, Illinois

E. S. Richter; J. R. Rowlett; C. S. Gardner; C. F. Sechrist

doi:10.1016/0021-9169(81)90094-5

Lidar observation of the mesospheric sodium layer over Urbana, Illinois

E. S. Richter, J. R. Rowlett, C. S. Gardner, C. F. Sechrist

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Atmospheric sodium has been observed over Urbana (40°10′N, 88°10′W) using a monostatic lidar tuned to 589.0 nm. The photocount data are processed using digital smoothing filters to obtain continuous estimates of the sodium density versus altitude. The filter cutoff frequency is related to the height resolution and accuracy of the estimated profile. Wavelike structures in the sodium layer have been observed with typical wavelengths of 3-15 km and phase velocities of 1-3 m s^-1. The layer is characterized by a sharp falloff on the bottomside and often an undulatory motion of the bottomside of the layer accompanies the wave motion. The topside gradient of the layer is frequently observed to decrease through the night.

Original language	English (US)
Pages (from-to)	327-337
Number of pages	11
Journal	Journal of Atmospheric and Terrestrial Physics
Volume	43
Issue number	4
DOIs	https://doi.org/10.1016/0021-9169(81)90094-5
State	Published - Apr 1981

ASJC Scopus subject areas

Environmental Science(all)
Geophysics
Engineering(all)
Atmospheric Science
Earth and Planetary Sciences(all)

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10.1016/0021-9169(81)90094-5

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title = "Lidar observation of the mesospheric sodium layer over Urbana, Illinois",

abstract = "Atmospheric sodium has been observed over Urbana (40°10′N, 88°10′W) using a monostatic lidar tuned to 589.0 nm. The photocount data are processed using digital smoothing filters to obtain continuous estimates of the sodium density versus altitude. The filter cutoff frequency is related to the height resolution and accuracy of the estimated profile. Wavelike structures in the sodium layer have been observed with typical wavelengths of 3-15 km and phase velocities of 1-3 m s-1. The layer is characterized by a sharp falloff on the bottomside and often an undulatory motion of the bottomside of the layer accompanies the wave motion. The topside gradient of the layer is frequently observed to decrease through the night.",

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T1 - Lidar observation of the mesospheric sodium layer over Urbana, Illinois

AU - Richter, E. S.

AU - Rowlett, J. R.

AU - Gardner, C. S.

AU - Sechrist, C. F.

PY - 1981/4

Y1 - 1981/4

N2 - Atmospheric sodium has been observed over Urbana (40°10′N, 88°10′W) using a monostatic lidar tuned to 589.0 nm. The photocount data are processed using digital smoothing filters to obtain continuous estimates of the sodium density versus altitude. The filter cutoff frequency is related to the height resolution and accuracy of the estimated profile. Wavelike structures in the sodium layer have been observed with typical wavelengths of 3-15 km and phase velocities of 1-3 m s-1. The layer is characterized by a sharp falloff on the bottomside and often an undulatory motion of the bottomside of the layer accompanies the wave motion. The topside gradient of the layer is frequently observed to decrease through the night.

AB - Atmospheric sodium has been observed over Urbana (40°10′N, 88°10′W) using a monostatic lidar tuned to 589.0 nm. The photocount data are processed using digital smoothing filters to obtain continuous estimates of the sodium density versus altitude. The filter cutoff frequency is related to the height resolution and accuracy of the estimated profile. Wavelike structures in the sodium layer have been observed with typical wavelengths of 3-15 km and phase velocities of 1-3 m s-1. The layer is characterized by a sharp falloff on the bottomside and often an undulatory motion of the bottomside of the layer accompanies the wave motion. The topside gradient of the layer is frequently observed to decrease through the night.

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Lidar observation of the mesospheric sodium layer over Urbana, Illinois

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