Journal of Atmospheric and Environmental Optics, Volume. 18, Issue 6, 516(2023)
Preliminary research on evaluation of wind profile radar data in Hefei area
Figures & Tables(11)
Fig. 1. Distribution of balloon radiosondes and wind profile radar stations
Fig. 3. Comparison of vertical profile distribution of Fuyang and Anqing balloon soundings and ERA5 data. (a), (b) Correlation coefficient; (c), (d) deviation (SBia); (e), (f) root mean square error (ERMS)
Fig. 4. Distribution of wind profile radar horizontal wind data acquisition rate with height. (a), (b) Hefei station; (c), (d) Chaohu station
Fig. 6. Distribution of correlation coefficients between wind profile radar measurements and reanalysis data with pressure level in different seasons. (a), (b) Hefei station; (c), (d) Chaohu station
Fig. 7. Distribution of SBia between wind profile radar measurements and reanalysis data with pressure level in different seasons.(a), (b) Hefei station; (c), (d) Chaohu station
Fig. 8. Distribution of ERMS between wind profile radar measurements and reanalysis data with pressure level in different seasons.(a), (b) Hefei station; (c), (d) Chaohu station
Table 1. Wind profile radar performance index
View tableView in ArticleTable 1. Wind profile radar performance index
Main indicators Parameters Frequency/MHz 1280 ± 0.5 Detection distance (MAX)/km ≥ 6 Detection distance (MIN)/m ≤ 150 Horizontal wind direction/(°) 0～360 Horizontal wind speed/(m·s-1) 0～60 Vertical speed/(m·s-1) -20～+20 Height resolution/m 60/120 (Low mode)
120/240 (Pulse compression)
Temporal resolution/min 6 Wind speed resolution/ ( m·s-1)0.2 Wind direction resolution/(°) 0.5 Sensitivity/dBm -150
Table 2. Description of ERA5 reanalysis data
View tableView in ArticleTable 2. Description of ERA5 reanalysis data
Main indicators Parameters Data type Gridded Projection mode Regular latitude-longitude grid Horizontal coverage Global Horizontal resolution/(°) 0.25 × 0.25 Vertical coverage/hPa 1000～1 Vertical resolution 37 pressure levels Temporal coverage 1959 to present Temporal resolution Hourly
Table 3. Comparison of statistical values between Fuyang and Anqing sounding stations and ERA5 reanalysis data
View tableView in ArticleTable 3. Comparison of statistical values between Fuyang and Anqing sounding stations and ERA5 reanalysis data
Component Fuyang Anqing R SBia/( m·s-1 )ERMS/( m·s-1 )R SBia/( m·s-1 )ERMS/( m·s-1 )u
v
0.96 0.02 1.57 0.96 -0.05 1.66 0.96 -0.11 1.57 0.95 -0.05 1.68
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Song ZHU, Xueliang DENG, Weiwei SHEN, Yue WU, Xiaolong JIN. Preliminary research on evaluation of wind profile radar data in Hefei area[J]. Journal of Atmospheric and Environmental Optics, 2023, 18(6): 516
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Received: Feb. 6, 2023
Accepted: --
Published Online: Dec. 22, 2023
The Author Email: DENG Xueliang (dengxueliang9989@aliyun.com)
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