First Comparative Analysis of the Simultaneous Horizontal Wind Observations by Collocated Meteor Radar and FPI at Low Latitude through 892.0-nm Airglow Emission

The Fabry–Pérot interferometer (FPI) and meteor radar are two important techniques for measuring the horizontal wind field in mesopause region, the observations of which still lack comprehensive comparison. Kunming Observatory (25.6°N,103.8°E) has deployed both instruments in recent years and provid...

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Autores principales:	Shengyang Gu, Xin Hou, Na Li, Wen Yi, Zonghua Ding, Jinsong Chen, Guoyuan Hu, Xiankang Dou
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	mesospheric horizontal wind FPI meteor radar Science Q
Acceso en línea:	https://doaj.org/article/48d5ef4c3ebe4106a7de7fdaa55f95eb
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spelling	oai:doaj.org-article:48d5ef4c3ebe4106a7de7fdaa55f95eb2021-11-11T18:54:02ZFirst Comparative Analysis of the Simultaneous Horizontal Wind Observations by Collocated Meteor Radar and FPI at Low Latitude through 892.0-nm Airglow Emission10.3390/rs132143372072-4292https://doaj.org/article/48d5ef4c3ebe4106a7de7fdaa55f95eb2021-10-01T00:00:00Zhttps://www.mdpi.com/2072-4292/13/21/4337https://doaj.org/toc/2072-4292The Fabry–Pérot interferometer (FPI) and meteor radar are two important techniques for measuring the horizontal wind field in mesopause region, the observations of which still lack comprehensive comparison. Kunming Observatory (25.6°N,103.8°E) has deployed both instruments in recent years and provides collocated meteor radar and FPI observations. The meteor radar measures the horizontal wind fields over 24 hours every day continuously, whereas the FPI can only work during the night with clear air condition. FPI horizontal wind data from the 892.0-nm airglow emission (with a peak height at ~87 km) from 26 January to 8 February 2019 were comparatively analyzed with simultaneous meteor radar observations, which cover the range between 80 and 90 km with a vertical resolution of 1.8 km. It was found that the temporal variations in the horizontal wind fields observed by the FPI and meteor radar were generally consistent with one another, with the highest 2-D correlation coefficients of 0.91 (0.88) at 88 (87) km for the meridional (zonal) wind, which agreed with the peak height of OH airglow emission observed by the TIMED/SABER instrument. In addition, the correlation coefficient for the weighted meteor radar horizontal wind by OH concentration between 86 and 88 km and 85 and 89 km increased slightly from 0.91 (0.89) to 0.92 (0.89) for the meridional (zonal) wind, which indicated the contribution of OH concentration beyond the peak height to the FPI wind observations. We also found that the absolute horizontal wind values detected by two instruments were linearly correlated with a slope of ~1.3 for both wind components, and meteor radar wind observations were usually larger than the FPI observations.Shengyang GuXin HouNa LiWen YiZonghua DingJinsong ChenGuoyuan HuXiankang DouMDPI AGarticlemesospheric horizontal windFPImeteor radarScienceQENRemote Sensing, Vol 13, Iss 4337, p 4337 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	mesospheric horizontal wind FPI meteor radar Science Q
spellingShingle	mesospheric horizontal wind FPI meteor radar Science Q Shengyang Gu Xin Hou Na Li Wen Yi Zonghua Ding Jinsong Chen Guoyuan Hu Xiankang Dou First Comparative Analysis of the Simultaneous Horizontal Wind Observations by Collocated Meteor Radar and FPI at Low Latitude through 892.0-nm Airglow Emission
description	The Fabry–Pérot interferometer (FPI) and meteor radar are two important techniques for measuring the horizontal wind field in mesopause region, the observations of which still lack comprehensive comparison. Kunming Observatory (25.6°N,103.8°E) has deployed both instruments in recent years and provides collocated meteor radar and FPI observations. The meteor radar measures the horizontal wind fields over 24 hours every day continuously, whereas the FPI can only work during the night with clear air condition. FPI horizontal wind data from the 892.0-nm airglow emission (with a peak height at ~87 km) from 26 January to 8 February 2019 were comparatively analyzed with simultaneous meteor radar observations, which cover the range between 80 and 90 km with a vertical resolution of 1.8 km. It was found that the temporal variations in the horizontal wind fields observed by the FPI and meteor radar were generally consistent with one another, with the highest 2-D correlation coefficients of 0.91 (0.88) at 88 (87) km for the meridional (zonal) wind, which agreed with the peak height of OH airglow emission observed by the TIMED/SABER instrument. In addition, the correlation coefficient for the weighted meteor radar horizontal wind by OH concentration between 86 and 88 km and 85 and 89 km increased slightly from 0.91 (0.89) to 0.92 (0.89) for the meridional (zonal) wind, which indicated the contribution of OH concentration beyond the peak height to the FPI wind observations. We also found that the absolute horizontal wind values detected by two instruments were linearly correlated with a slope of ~1.3 for both wind components, and meteor radar wind observations were usually larger than the FPI observations.
format	article
author	Shengyang Gu Xin Hou Na Li Wen Yi Zonghua Ding Jinsong Chen Guoyuan Hu Xiankang Dou
author_facet	Shengyang Gu Xin Hou Na Li Wen Yi Zonghua Ding Jinsong Chen Guoyuan Hu Xiankang Dou
author_sort	Shengyang Gu
title	First Comparative Analysis of the Simultaneous Horizontal Wind Observations by Collocated Meteor Radar and FPI at Low Latitude through 892.0-nm Airglow Emission
title_short	First Comparative Analysis of the Simultaneous Horizontal Wind Observations by Collocated Meteor Radar and FPI at Low Latitude through 892.0-nm Airglow Emission
title_full	First Comparative Analysis of the Simultaneous Horizontal Wind Observations by Collocated Meteor Radar and FPI at Low Latitude through 892.0-nm Airglow Emission
title_fullStr	First Comparative Analysis of the Simultaneous Horizontal Wind Observations by Collocated Meteor Radar and FPI at Low Latitude through 892.0-nm Airglow Emission
title_full_unstemmed	First Comparative Analysis of the Simultaneous Horizontal Wind Observations by Collocated Meteor Radar and FPI at Low Latitude through 892.0-nm Airglow Emission
title_sort	first comparative analysis of the simultaneous horizontal wind observations by collocated meteor radar and fpi at low latitude through 892.0-nm airglow emission
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/48d5ef4c3ebe4106a7de7fdaa55f95eb
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First Comparative Analysis of the Simultaneous Horizontal Wind Observations by Collocated Meteor Radar and FPI at Low Latitude through 892.0-nm Airglow Emission

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