Mesopause region temperature and wind measurements with pseudorandom modulation continuous-wave (PMCW) lidar at 589 nm: Erratum

2012 ◽  
Vol 51 (12) ◽  
pp. 1981
Author(s):  
Chiao-Yao She ◽  
Makoto Abo ◽  
Jia Yue ◽  
Bifford P. Williams ◽  
Chikao Nagasawa ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Mesopause Region ◽  
Region Temperature ◽  
Wind Measurements

Mesopause-region temperature and wind measurements with pseudorandom modulation continuous-wave (PMCW) lidar at 589 nm

2011 ◽  
Vol 50 (18) ◽  
pp. 2916 ◽  
Author(s):  
Chiao-Yao She ◽  
Makoto Abo ◽  
Jia Yue ◽  
Bifford P. Williams ◽  
Chikao Nagasawa ◽  
...  
Keyword(s):  
Continuous Wave ◽  
Mesopause Region ◽  
Region Temperature ◽  
Wind Measurements

A proposed all-solid-state transportable narrow-band sodium lidar for mesopause region temperature and horizontal wind measurements

2007 ◽  
Vol 85 (2) ◽  
pp. 111-118 ◽  
Author(s):  
Chial -Yao She ◽  
J D Vance ◽  
Takuya D Kawahara ◽  
Bifford P Williams ◽  
Qian Wu
Keyword(s):  
Solid State ◽  
Sum Frequency Generation ◽  
Horizontal Wind ◽  
State University ◽  
Mesopause Region ◽  
Sum Frequency ◽  
Colorado State University ◽  
Region Temperature ◽  
Wind Measurements ◽  
Frequency Generation

An all-solid-state narrowband sodium lidar transmitter based on proven technologies is proposed. These proven technologies include: (i) the sum frequency generation of 589 nm coherent radiation with pulsed solid-state Nd:YAG lasers at 1064 and 1319 nm, developed for laser-guided star research and used in lidar measurements of mesopause-region temperatures by Shinshu University, (ii) the Doppler-free spectroscopic seed control developed by the Colorado State University and employed in a lidar system with hybrid solid-state and dye technologies for mesopause-region temperature and horizontal wind measurements, and (iii) the low-power continuous wave, tunable light around 589 nm via sum frequency generation developed by the University of Nevada. The proper combination of these mature technologies, deployed along with sodium-vapor Faraday filters, also developed by Colorado State University, will lead to a new all-solid-state sodium fluorescence lidar, capable of measuring mesopause-region temperatures and horizontal winds on a 24 h continuous basis, weather permitting. The integration of these proven solid-state technologies will make this proposed lidar transportable and suitable for remote operation in harsh environments. PACS Nos.: 42.68.Wt, 42.79.Qx, 92.60.–e, 07.20.Dt, 42.79.Qx

scholarly journals Doppler wind lidar activities at Cabauw

2021 ◽  
Author(s):  
Steven Knoop ◽  
Fred Bosveld ◽  
Marijn de Haij ◽  
Arnoud Apituley
Keyword(s):  
Wind Speed ◽  
Wind Profile ◽  
Continuous Wave ◽  
Wind Farms ◽  
Data Availability ◽  
Horizontal Wind ◽  
Horizontal Wind Speed ◽  
Low Clouds ◽  
Wind Measurements ◽  
Wind Lidar

<p>Atmospheric motion and turbulence are essential parameters for weather and topics related to air quality. Therefore, wind profile measurements play an important role in atmospheric research and meteorology. One source of wind profile data are Doppler wind lidars, which are laser-based remote sensing instruments that measure wind speed and wind direction up to a few hundred meters or even a few kilometers. Commercial wind lidars use the laser wavelength of 1.5 µm and therefore backscatter is mainly from aerosols while clear air backscatter is minimal, limiting the range to the boundary layer typically.</p><p>We have carried out a two-year intercomparison of the ZephIR 300M (ZX Lidars) short-range wind lidar and tall mast wind measurements at Cabauw [1]. We have focused on the (height-dependent) data availability of the wind lidar under various meteorological conditions and the data quality through a comparison with in situ wind measurements at several levels in the 213m tall meteorological mast. We have found an overall availability of quality-controlled wind lidar data of 97% to 98 %, where the missing part is mainly due to precipitation events exceeding 1 mm/h or fog or low clouds below 100 m. The mean bias in the horizontal wind speed is within 0.1 m/s with a high correlation between the mast and wind lidar measurements, although under some specific conditions (very high wind speed, fog or low clouds) larger deviations are observed. This instrument is being deployed within North Sea wind farms.</p><p>Recently, a scanning long-range wind lidar Windcube 200S (Leosphere/Vaisala) has been installed at Cabauw, as part of the Ruisdael Observatory program [2]. The scanning Doppler wind lidars will provide detailed measurements of the wind field, aerosols and clouds around the Cabauw site, in coordination with other instruments, such as the cloud radar.</p><p>[1] Knoop, S., Bosveld, F. C., de Haij, M. J., and Apituley, A.: A 2-year intercomparison of continuous-wave focusing wind lidar and tall mast wind measurements at Cabauw, Atmos. Meas. Tech., 14, 2219–2235, 2021</p><p>[2] https://ruisdael-observatory.nl/</p>

A long-term comparison of mesopause region wind measurements over Eastern and Central Europe

2005 ◽  
Vol 67 (3) ◽  
pp. 229-240 ◽  
Author(s):  
Ch. Jacobi ◽  
Yu.I. Portnyagin ◽  
E.G. Merzlyakov ◽  
T.V. Solovjova ◽  
N.A. Makarov ◽  
...  
Keyword(s):  
Central Europe ◽  
Mesopause Region ◽  
Wind Measurements

scholarly journals Meteor radar observations of mesopause region long-period temperature oscillations

2016 ◽  
Vol 14 ◽  
pp. 169-174
Author(s):  
Ch. Jacobi ◽  
N. Samtleben ◽  
G. Stober
Keyword(s):  
Time Scales ◽  
Lower Thermosphere ◽  
Planetary Waves ◽  
Meteor Radar ◽  
Mesopause Region ◽  
Radar Observations ◽  
Long Period ◽  
Temperature Oscillations ◽  
Wind Measurements

Abstract. Meteor radar observations of mesosphere/lower thermosphere (MLT) daily temperatures have been performed at Collm, Germany since August 2004. The data have been analyzed with respect to long-period oscillations at time scales of 2–30 days. The results reveal that oscillations with periods of up to 6 days are more frequently observed during summer, while those with longer periods have larger amplitudes during winter. The oscillations may be considered as the signature of planetary waves. The results are compared with analyses from radar wind measurements. Moreover, the temperature oscillations show considerable year-to-year variability. In particular, amplitudes of the quasi 5-day oscillation have increased during the last decade, and the quasi 10-day oscillations are larger if the equatorial stratospheric winds are eastward.

scholarly journals Wind sensing with drone-mounted wind lidars: proof of concept

2020 ◽  
Vol 13 (2) ◽  
pp. 521-536
Author(s):  
Nikola Vasiljević ◽  
Michael Harris ◽  
Anders Tegtmeier Pedersen ◽  
Gunhild Rolighed Thorsen ◽  
Mark Pitter ◽  
...  
Keyword(s):  
Wind Speed ◽  
Continuous Wave ◽  
Position Control ◽  
Horizontal Wind ◽  
Lidar Measurement ◽  
Proof Of Concept ◽  
Horizontal Wind Speed ◽  
Wind Speeds ◽  
Potential Applications ◽  
Wind Measurements

Abstract. The fusion of drone and wind lidar technology introduces the exciting possibility of performing high-quality wind measurements virtually anywhere. We present a proof-of-concept (POC) drone–lidar system and report results from several test campaigns that demonstrate its ability to measure accurate wind speeds. The POC system is based on a dual-telescope continuous-wave (CW) lidar, with drone-borne telescopes and ground-based optoelectronics. Commercially available drone and gimbal units are employed. The demonstration campaigns started with a series of comparisons of the wind speed measurements acquired by the POC system to simultaneous measurements performed by nearby mast-based sensors. On average, an agreement down to about 0.1 m s−1 between mast- and drone-based measurements of the horizontal wind speed is found. Subsequently, the extent of the flow disturbance caused by the drone downwash was investigated. These tests vindicated the somewhat conservative choice of lidar measurement ranges made for the initial wind speed comparisons. Overall, the excellent results obtained without any drone motion correction and with fairly primitive drone position control indicate the potential of drone–lidar systems in terms of accuracy and applications. The next steps in the development are outlined and several potential applications are discussed.

scholarly journals The first 80-hour continuous lidar campaign for simultaneous observation of mesopause region temperature and wind

2003 ◽  
Vol 30 (6) ◽  
Author(s):  
C. Y. She ◽  
Jim Sherman ◽  
Tao Yuan ◽  
B. P. Williams ◽  
Kam Arnold ◽  
...  
Keyword(s):  
Simultaneous Observation ◽  
Mesopause Region ◽  
Region Temperature

All-fiber multifunction continuous-wave coherent laser radar at 155 µm for range, speed, vibration, and wind measurements

2000 ◽  
Vol 39 (21) ◽  
pp. 3716 ◽  
Author(s):  
Christer J. Karlsson ◽  
Fredrik Å. A. Olsson ◽  
Dietmar Letalick ◽  
Michael Harris
Keyword(s):  
Continuous Wave ◽  
Laser Radar ◽  
Wind Measurements ◽  
Coherent Laser Radar
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