Shipborne wind measurement and motion-induced error correction by coherent doppler lidar over yellow sea in 2014

Xiaochun Zhai,Xiaoquan Song,Songhua Wu,Bingyi Liu,D Nicolae,A Makoto,M.P Mccormick,A Comeron,A Behrendt,U Wandinger,A Vassilis,F Gibert,D Balis,C Senff,I Veselovskii,E Landulfo

doi:10.1051/epjconf/201817606014

Xiaochun Zhai, Xiaoquan Song + Show 14 more

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Journal: EPJ Web of Conferences	Publication Date: Jan 1, 2018
License type: CC BY 4.0

Affiliation: Ocean University of China

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Shipborne wind observations by the Coherent Doppler Lidar (CDL) during the 2014 Yellow Sea campaign are presented to study the structure of the Marine Atmospheric Boundary Layer (MABL). This paper gives an analysis of the correction for horizontal and vertical wind measurement, demonstrating that the combination of the CDL with the attitude correction system enables the retrieval of wind profiles in the MABL during both anchored and cruising measurement with satisfied statistical uncertainties.

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The vertical structure of atmospheric variables in Marine Atmospheric Boundary Layer (MABL) is significant for understanding the driving and coupling mechanisms and for parameterizing ocean-atmosphere interaction process
Wulfmeyer et al corrected the vertical velocity using LOS velocity in zenith stare mode and horizontal wind derived from Velocity Azimuth Display (VAD) mode
4 CONCLUSIONS Shipborne wind observation by the Coherent Doppler Lidar (CDL) during the 2014 Yellow Sea campaign has been presented to study the structure of the MABL

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The vertical structure of atmospheric variables in Marine Atmospheric Boundary Layer (MABL) is significant for understanding the driving and coupling mechanisms and for parameterizing ocean-atmosphere interaction process. The Coherent Doppler Lidar (CDL) is an available tool with high spatial and temporal resolution, providing nearly continuous particle backscatter, wind profile observations in clear atmosphere [1], which is demanding for the air-sea boundary layer turbulent characteristics. Wolfe et al and Pichugina et al [2] deployed the NOAA High Resolution Doppler Lidar (HSRL) along with the first use of a motion compensation system at sea in 2004. Hill et al [3] used the NOAA HSRL with a Strapped-Down System (SDS) to compensate for the orientation of the Lidar’s scanning unit for the ship’s motion and concluded that the attitude correction depends on the velocity of the seatainer and on the motion of the hemispheric scanner relative to the seatainer. Wulfmeyer et al corrected the vertical velocity using LOS velocity in zenith stare mode and horizontal wind derived from Velocity Azimuth Display (VAD) mode

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