Narrowband lidar technique for Na temperature and Doppler wind observations of the upper atmosphere

Bills, Richard E.; Gardner, Chester S.; She, C. Y.

doi:10.1117/12.55765

Cited by 82 publications

(46 citation statements)

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“…Detailed descriptions of this system can be found in Bills et al (1991) and Bills and Gardner (1993) while a summary of the daytime modifications together with some initial results of tidal temperature and wind perturbations is presented in Yu et al (1997). To reduce background noise from the bright daytime sky, the laser beam divergence and telescope field of view were reduced to 0.5 mrad.…”

Section: Na Wind-temperature Lidarmentioning

confidence: 99%

Comparison of terdiurnal tidal oscillations in mesospheric OH rotational temperature and Na lidar temperature measurements at mid-latitudes for fall/spring conditions

et al. 2014

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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 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 <1-hr LST and ∼7-hr LST, respectively, for the 8-hr component. The Temperature Mapper data are in excellent agreement with these findings but in addition have shown that the amplitude of this tidal component can vary by as much as an order of magnitude (1.5-15 K) on a night-by-night basis resulting in an apparent 8-hr dominance of the nocturnal variation during investigated portions of the spring and fall seasons with little or no diurnal and semi-diurnal variability evident. Reports of terdiurnal tidal measurements in the mid-latitude nightglow emissions are exceptionally rare and have yet to be modeled. These innovative joint measurements pave the way for new research in this important area.

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Section: Na Wind-temperature Lidarmentioning

confidence: 99%

Comparison of terdiurnal tidal oscillations in mesospheric OH rotational temperature and Na lidar temperature measurements at mid-latitudes for fall/spring conditions

et al. 2014

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“…In order to obtain temperature information from the Doppler-broadened Na spectrum, we adopted the two-frequency technique that was used at Colorado State University and Illinois University [11]. In this simple and reputable technique, the narrowband laser is alternately tuned to the Na D 2a peak and the minimum between D 2a and D 2b .…”

Section: Lidar Observationmentioning

confidence: 99%

Sodium temperature lidar based on injection seeded Nd:YAG pulse lasers using a sum-frequency generation technique

Kawahara¹,

Kitahara²,

Kobayashi³

et al. 2011

Opt. Express

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Abstract:We report on a sodium (Na) temperature lidar based on two injection seeded Nd:YAG pulse lasers using single-pass sum-frequency generation. The laser power at 589 nm is 400 mW (40 mJ per pulse at a repetition rate of 10 Hz) and the pulse width is 22 nsec FWHM. The narrowband laser tuned to the Doppler broadened Na D 2 spectrum enables us to measure the temperature of the mesopause region (80-115 km). This solid-state transportable system demonstrated high performance and capability at Syowa Station in Antarctica for 3 years and at Uji in Japan for an additional year without any major operational troubles. resonance radiation generated in single-pass sum-frequency generation with periodically poled lithium niobate," ©2011 Optical Society of America

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“…Franke et al (1990) gave a comparison of the vertical velocity measured by HF radar and that estimated by sodium lidar. Bills et al (1991) compared the horizontal winds by MF radar and that by Doppler wind lidar. Most recently, Collins et al (1997) presented a comparison of the gravity wave induced RMS velocity measured by MF radar and Na density and temperature lidar.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous observations with a sodium lidar and an MF radar during PREASA-2 campaign

Zhang

Gong

et al. 2014

Earth Planet Sp

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Simultaneous observations with a sodium lidar in Wuhan, China (30.53 • N, 114.37• E) and an MF radar in Yamagawa, Japan (31.20 • N, 130.62• E) were conduced during the PREASA-2 campaign from Feb. 22 to March 15, 1996. Some observation results are given. The gravity wave induced velocities measured by both techniques are estimated to compare the gravity wave activities between the places with same latitudes and different longitudes. We found that RMS velocities in Yamagawa were larger than those in Wuhan, which suggest different gravity wave activities between the two places.

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Narrowband lidar technique for Na temperature and Doppler wind observations of the upper atmosphere

Cited by 82 publications

References 0 publications

Comparison of terdiurnal tidal oscillations in mesospheric OH rotational temperature and Na lidar temperature measurements at mid-latitudes for fall/spring conditions

Comparison of terdiurnal tidal oscillations in mesospheric OH rotational temperature and Na lidar temperature measurements at mid-latitudes for fall/spring conditions

Sodium temperature lidar based on injection seeded Nd:YAG pulse lasers using a sum-frequency generation technique

Simultaneous observations with a sodium lidar and an MF radar during PREASA-2 campaign

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