Comparisons of CLOVAR windprofiler horizontal winds with radiosondes and CMC regional analyses

Belu, Radian; Hocking, W. K.; Donaldson, Norman; Thayaparan, T.

doi:10.1080/07055900.2001.9649669

Cited by 11 publications

(9 citation statements)

References 36 publications

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“…Rust et al 1990). Belu et al (2001) explain better correlation between the radar and radiosonde zonal winds than meridional ones due to the latter usually being smaller than the former, and the same absolute errors for the two components results in more significant relative errors for the meridional component. The authors also compared the winds measured with the CLOVAR windprofiler near London, Canada using DBS technique with winds from the Canadian Meteorological Centre operational model for eight months.…”

Section: Discussionmentioning

confidence: 97%

Validation of wind measurements of two MST radars in northern Sweden and in Antarctica

Belova¹,

Voelger²,

Kirkwood³

et al. 2020

Preprint

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Abstract. Two atmospheric VHF radars: ESRAD located near Kiruna in the Swedish Artic and MARA at Indian research station Maitri in Antarctica perform wind measurements in the troposphere and lower stratosphere on a regular basis. We compared horizontal winds at altitudes between about 0.5 km and 14 km derived from the radar data using the full correlation analysis technique with radiosonde observations and models. The comparison with 28 radiosondes launched from January 2017 to August 2019 showed that ESRAD underestimates the zonal and meridional winds by about 8 % and 25 %, respectively. The mean differences between the radar and radiosonde winds are −1.4 m/s and 0.4 m/s. A similar result was found when comparing with the regional NWP model HARMONIE-AROME for the period September 2018–May 2019. The ESRAD random error was estimated to be 2.8 m/s (2.4 m/s) for the zonal (meridional) component. The comparison of MARA with the ECMWF ERA5 reanalysis for January–December 2019 reveals good agreement between them with the mean difference between 0.1 m/s and −0.5 m/s depending on the component and season. The MARA random errors are 2.6 m/s and 2.3 m/s for the zonal and meridional winds, respectively.

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Section: Discussionmentioning

confidence: 97%

Validation of wind measurements of two MST radars in northern Sweden and in Antarctica

Belova¹,

Voelger²,

Kirkwood³

et al. 2020

Preprint

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“…ERA-Interim is one generation of European Centre for Medium-Range Weather Forecasts (ECMWF) global atmospheric reanalysis products, which offers good-quality atmospheric wind data with a 6 h temporal resolution and 3 • × 3 • -0.125 • × 0.125 • latitude-longitude resolution (Dee et al, 2011;Houchi et al, 2010). The data set of monthly means of daily means is applied for the present study, which is produced by the average of the four main synoptic monthly means at 00:00, 06:00, 12:00, and 18:00 UTC (Berrisford et al, 2009).…”

Section: Tropospheric and Low Stratospheric Observationmentioning

confidence: 99%

Wuhan MST radar: technical features and validation of wind observations

et al. 2020

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Abstract. The Wuhan mesosphere–stratosphere–troposphere (MST) radar is a 53.8 MHz monostatic Doppler radar, located in Chongyang, Hubei Province, China, and has the capability to observe the dynamics of the mesosphere–stratosphere–troposphere region in the subtropical latitudes. The radar system has an antenna array of 576 Yagi antennas, and the maximum peak power is 172 kW. The Wuhan MST radar is efficient and cost-effective and employs more simplified and more flexible architecture. It includes 24 big transmitter–receiver (TR) modules, and the row or column data port of each big TR module connects 24 small TR modules via the corresponding row or column feeding network. Each antenna is driven by a small TR module with peak output power of 300 W. The arrangement of the antenna field, the functions of the timing signals, the structure of the TR modules, and the clutter suppression procedure are described in detail in this paper. We compared the MST radar observation results with other instruments and related models in the whole MST region for validation. Firstly, we made a comparison of the horizontal winds in the troposphere and low stratosphere observed by the Wuhan MST radar with the radiosonde on 22 May 2016, as well as with the ERA-Interim data sets (2016 and 2017) in the long term. Then, we made a comparison of the observed horizontal winds in the mesosphere with the meteor radar and the Horizontal Wind Model 14 (HWM-14) model in the same way. In general, good agreements can be obtained, and this indicates that the Wuhan MST is an effective tool to measure the three-dimensional wind fields of the MST region.

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“…The underestimates of meridional winds could be due to the effect of aspect sensitivity (Thomas et al, 1997). The small discrepancies at some heights may be attributed to the variations of atmospheric activities at different temporal and spatial scales, and the different measurement principles and errors in both instruments are also significant reasons (Belu et al, 2010;Hocking et al, 2001). reanalysis, which offers a good quality atmospheric wind with a 6 hour temporal resolution and 3°×3°, 0.125°×0.125°l…”

Section: Tropospheric and Low Stratospheric Observationmentioning

confidence: 99%

Wuhan MST radar: Technical features and Validation of wind observations

Li¹,

Chen²,

Zhang³

et al. 2020

Preprint

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Abstract. The Wuhan MST radar is a 53.8 MHz monostatic Doppler radar, located in Chongyang, Hubei Province, China, which has the capability to observe the dynamics of the mesosphere-stratosphere-troposphere region in the subtropical latitudes. The system is composed of 576 Yagi antennas with square distribution, and the maximum peak power is 192 kW. The Wuhan MST radar is efficient and cheap, which applies simplifier and more flexible architecture. It includes 24 big TR modules, and the row/column data port of each big TR module connects 24 small TR modules via the corresponding row/column feeding network. Each antenna is driven by a small TR module with peak output power of 300 W. The arrangement of the antenna field, the functions of the timing signals, the structure of the TR modules, and the clutter suppression procedure are described in detail in this manuscript. We compared the MST radar observation results with other instruments and related models in the whole MST region for validation. Firstly, we made a comparison of the Wuhan MST radar observed horizontal winds in the troposphere and low stratosphere with the radiosonde in the short term, as well as the ERA-interim data sets (2016 and 2017) in the long term. Then, we made a comparison of the observed horizontal winds in the mesosphere with the meteor radar and the HWM-07 model in the same way. In general, good agreements can be obtained, and it indicates that the Wuhan MST is an effective tool to measure the three-dimensional wind fields of the MST region in the short-term and long-term.

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Comparisons of CLOVAR windprofiler horizontal winds with radiosondes and CMC regional analyses

Abstract: The Canadian (London, Ontario) VHF Atmospheric Radar (CLOVAR) windprofiler radar near London, Ontario is a relatively new tool for atmospheric wind measurements (Hocking, 1994(Hocking, , 1997a (Hocking, 1994(Hocking, , 1997a

Cited by 11 publications

References 36 publications

Validation of wind measurements of two MST radars in northern Sweden and in Antarctica

Validation of wind measurements of two MST radars in northern Sweden and in Antarctica

Wuhan MST radar: technical features and validation of wind observations

Wuhan MST radar: Technical features and Validation of wind observations

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