17 Nov 2023
 | 17 Nov 2023
Status: this preprint is currently under review for the journal AMT.

A New Dual-Frequency Stratospheric Tropospheric / Meteor Radar: System Description and First Results

Qingchen Xu, Iain Murray Reid, Bing Cai, Christian Adami, Zengmao Zhang, Mingliang Zhao, and Wen Li

Abstract. A new dual-frequency Stratospheric Tropospheric (ST) / Meteor radar has been built and installed at the Langfang Observatory in northern China. It utilizes a novel two-frequency system design that allows interleaved operation at 53.8 MHz for ST mode and at 35.0 MHz for Meteor mode, thus optimizing performance for both ST wind retrieval and meteor trail detection. In dedicated meteor mode, the daily meteor count rate reaches over 40,000 and allows wind estimation at finer time resolutions than the 1-hour typical of most meteor radars. The root mean square uncertainty of the ST wind measurements is better than 2 m/s when estimating the line of best fit with radiosonde winds. Preliminary observation results for one month of winter gravity wave (GW) momentum fluxes in the mesosphere, lower stratosphere and troposphere are also presented. A case of waves generated by the passage of a cold front is found.

Qingchen Xu et al.

Status: open (until 22 Dec 2023)

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Qingchen Xu et al.

Qingchen Xu et al.


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Short summary
To have better understanding for the dynamics of lower and middle atmosphere, we installed a newly designed dual-frequency radar system, using 53.8 MHz for near ground ~ 20 km wind measuring and 35.0 MHz for 70 ~ 100 km wind measuring. The initial results show its good performances, along with the analysis of typical winter gravity wave activities.