Analysis of the Combined Three-dimensional Wind Field Retrieved by Radar and Reanalysis Wind Field based on Optimum Interpolation Technique
In order to construct a grid spatiotemporal continuous three-dimensional wind products integrating wind retrieved by radar， combining ERA5 reanalysis wind field which used as the first-guess field and three-dimensional wind field retrieved by dual-radar networking which used as the observed field ba...
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| Format: | Article |
| Language: | zho |
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Science Press, PR China
2025-06-01
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| Series: | Gaoyuan qixiang |
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| Online Access: | http://www.gyqx.ac.cn/EN/10.7522/j.issn.1000-0534.2024.00089 |
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| author | Songyu HAN Liji WANG Lili KANG Yongsheng LIU Zhou TENG Lingli ZHOU Yefeng CHEN |
| author_facet | Songyu HAN Liji WANG Lili KANG Yongsheng LIU Zhou TENG Lingli ZHOU Yefeng CHEN |
| author_sort | Songyu HAN |
| collection | DOAJ |
| description | In order to construct a grid spatiotemporal continuous three-dimensional wind products integrating wind retrieved by radar， combining ERA5 reanalysis wind field which used as the first-guess field and three-dimensional wind field retrieved by dual-radar networking which used as the observed field based on optimal interpolation technique.The error statistics of the ERA5 reanalysis and radar retrieved wind fields are defined based on the data of six precipitation processes in the Zhejiang region and the error structures were employed to compute the weights， the combined hourly three-dimensional wind field with 0.25°×0.25° resolution were obtained as the final results which checked and evaluated with the second radio-sounding wind data.The results show that： Compared with the ERA5 wind field， the accuracy of the combined wind field is improved， root mean square error is reduced by 6% （U component）， 16% （V component）； the correlation coefficient is increased by 0.02 （V component）.The combined wind field has effectively corrected the rather smaller wind field shown by the reanalysis data near the eye of typhoon Lekima， filled the blind area of radar retrieval wind field， and formed a complete and accurate wind field product， corrected the large deviation of the typhoon location with ERA5 wind field.Combined with the small-scale wind information retrieved by radar， the combined wind field reflects the original inconspicuous convergence characteristics of ERA5 wind field， and improves the application value of data. |
| format | Article |
| id | doaj-art-e2728b36fefd4491b494773c71bf8a77 |
| institution | DOAJ |
| issn | 1000-0534 |
| language | zho |
| publishDate | 2025-06-01 |
| publisher | Science Press, PR China |
| record_format | Article |
| series | Gaoyuan qixiang |
| spelling | doaj-art-e2728b36fefd4491b494773c71bf8a772025-08-20T02:42:05ZzhoScience Press, PR ChinaGaoyuan qixiang1000-05342025-06-0144375776910.7522/j.issn.1000-0534.2024.000891000-0534（2025）03-0757-13Analysis of the Combined Three-dimensional Wind Field Retrieved by Radar and Reanalysis Wind Field based on Optimum Interpolation TechniqueSongyu HAN0Liji WANG1Lili KANG2Yongsheng LIU3Zhou TENG4Lingli ZHOU5Yefeng CHEN6Zhejiang Meteorological Information Network Center， Hangzhou 310000， Zhejiang， ChinaZhejiang Meteorological Information Network Center， Hangzhou 310000， Zhejiang， ChinaZhejiang Institute of Meteorological Sciences， Hangzhou 310000， Zhejiang， ChinaZhejiang Meteorological Information Network Center， Hangzhou 310000， Zhejiang， ChinaZhejiang Meteorological Information Network Center， Hangzhou 310000， Zhejiang， ChinaZhejiang Pronvince Meteorological Observatory， Hangzhou 310000， Zhejiang， ChinaZhejiang Meteorological Information Network Center， Hangzhou 310000， Zhejiang， ChinaIn order to construct a grid spatiotemporal continuous three-dimensional wind products integrating wind retrieved by radar， combining ERA5 reanalysis wind field which used as the first-guess field and three-dimensional wind field retrieved by dual-radar networking which used as the observed field based on optimal interpolation technique.The error statistics of the ERA5 reanalysis and radar retrieved wind fields are defined based on the data of six precipitation processes in the Zhejiang region and the error structures were employed to compute the weights， the combined hourly three-dimensional wind field with 0.25°×0.25° resolution were obtained as the final results which checked and evaluated with the second radio-sounding wind data.The results show that： Compared with the ERA5 wind field， the accuracy of the combined wind field is improved， root mean square error is reduced by 6% （U component）， 16% （V component）； the correlation coefficient is increased by 0.02 （V component）.The combined wind field has effectively corrected the rather smaller wind field shown by the reanalysis data near the eye of typhoon Lekima， filled the blind area of radar retrieval wind field， and formed a complete and accurate wind field product， corrected the large deviation of the typhoon location with ERA5 wind field.Combined with the small-scale wind information retrieved by radar， the combined wind field reflects the original inconspicuous convergence characteristics of ERA5 wind field， and improves the application value of data.http://www.gyqx.ac.cn/EN/10.7522/j.issn.1000-0534.2024.00089three-dimensional windoptimum interpolationdual-doppler radar retrievalreanalysis wind fieldera5 |
| spellingShingle | Songyu HAN Liji WANG Lili KANG Yongsheng LIU Zhou TENG Lingli ZHOU Yefeng CHEN Analysis of the Combined Three-dimensional Wind Field Retrieved by Radar and Reanalysis Wind Field based on Optimum Interpolation Technique Gaoyuan qixiang three-dimensional wind optimum interpolation dual-doppler radar retrieval reanalysis wind field era5 |
| title | Analysis of the Combined Three-dimensional Wind Field Retrieved by Radar and Reanalysis Wind Field based on Optimum Interpolation Technique |
| title_full | Analysis of the Combined Three-dimensional Wind Field Retrieved by Radar and Reanalysis Wind Field based on Optimum Interpolation Technique |
| title_fullStr | Analysis of the Combined Three-dimensional Wind Field Retrieved by Radar and Reanalysis Wind Field based on Optimum Interpolation Technique |
| title_full_unstemmed | Analysis of the Combined Three-dimensional Wind Field Retrieved by Radar and Reanalysis Wind Field based on Optimum Interpolation Technique |
| title_short | Analysis of the Combined Three-dimensional Wind Field Retrieved by Radar and Reanalysis Wind Field based on Optimum Interpolation Technique |
| title_sort | analysis of the combined three dimensional wind field retrieved by radar and reanalysis wind field based on optimum interpolation technique |
| topic | three-dimensional wind optimum interpolation dual-doppler radar retrieval reanalysis wind field era5 |
| url | http://www.gyqx.ac.cn/EN/10.7522/j.issn.1000-0534.2024.00089 |
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