Article(id=1311998496266347007, tenantId=1146029695717560320, journalId=1311385791232049272, issueId=1311998371833934610, articleNumber=null, orderNo=null, doi=10.3878/j.issn.1006-9895.2601.24136, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1733673600000, receivedDateStr=2024-12-09, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1790734417263, onlineDateStr=2026-09-30, pubDate=1784044800000, pubDateStr=2026-07-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1790734417263, onlineIssueDateStr=2026-09-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1790734417263, creator=13701087609, updateTime=1790734417263, updator=13701087609, issue=Issue{id=1311998371833934610, tenantId=1146029695717560320, journalId=1311385791232049272, year='2026', volume='50', issue='4', pageStart='1017', pageEnd='1326', issueExtLink='null', onlineDate='null', pubDate='1784044800000', pubDateStr='2026-07-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1790734387596, creator='13701087609', updateTime=1790739443587, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1312019578272702984, tenantId=1146029695717560320, journalId=1311385791232049272, issueId=1311998371833934610, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1312019578272702985, tenantId=1146029695717560320, journalId=1311385791232049272, issueId=1311998371833934610, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=1088, endPage=1102, ext={EN=ArticleExt(id=1311998497931485698, articleId=1311998496266347007, tenantId=1146029695717560320, journalId=1311385791232049272, language=EN, title=Clear-Air Echo Recognition of Millimeter Wavelength Cloud Radar based on Deep Learning, columnId=1311998374337934099, journalTitle=Chinese Journal of Atmospheric Sciences, columnName=Articles, runingTitle=null, highlight=null, articleAbstract=
Millimeter-wavelength cloud radar serves as a pivotal instrument for cloud microphysical characterization but is susceptible to clear-air echoes induced by insects, birds, and aerosols, leading to considerable retrieval biases. To enhance detection accuracy and generalizability, this study presents ATNN (Multi-Head Attention Neural Networks), a universal deep learning framework that exclusively employs the reflectivity factor, radial velocity, and relative height for adaptive learning of vertical structural features. Evaluated on observations from Baise, Guangxi, ATNN demonstrates robust performance during the rainy season, achieving a clear-air echo detection rate of 91.98% and a meteorological echo preservation rate of 94.28%; during the non-flood season transition, these metrics are 87.56% and 86.38%, respectively. In contrast, conventional neural networks (NN) achieve marginally higher detection rates but misclassify numerous low-altitude, weak meteorological echoes as clear-air signals, yielding a preservation rate of only 54.96% in non-flood periods. Nationwide validation across 15 operational radar sites further confirms that ATNN attains an average clear-air echo removal rate of 81.17% while preserving 93.89% of meteorological echoes, thereby demonstrating strong regional adaptability.
, authors=Zhenqing LIANG
1, 2, Ziyang LIN
3, Zusi MO
2, Ying HUANG
1, 4, Yun SUN
5, authorsList=Zhenqing LIANG, Ziyang LIN, Zusi MO, Ying HUANG, Yun SUN, authorCompany=null, correspAuthors=Ying HUANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright © 2026 Chinese Journal of Atmospheric Sciences. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1311998510908662312, articleId=1311998496266347007, tenantId=1146029695717560320, journalId=1311385791232049272, language=CN, title=基于深度学习的毫米波云雷达晴空回波识别, columnId=1311998374501511957, journalTitle=大气科学, columnName=论文, runingTitle=null, highlight=null, articleAbstract=
毫米波云雷达是探测云微物理特征的重要设备,但易受飞虫、飞鸟、气溶胶等非气象目标影响产生晴空回波,导致反演偏差。为提升晴空回波识别精度与普适性,本文提出并实现了一种通用的毫米波云雷达晴空回波识别的深度学习模型——ATNN(Multi-Head Attention Neural Networks),仅利用反射率因子、径向速度、相对高度三种数据产品实现垂直结构特征的自适应学习。基于广西百色市毫米波云雷达观测资料的测试表明:ATNN 在汛期的评分较高,晴空回波识别率平均值为91.98%,气象回波保留率平均值为94.28%;在非汛期过渡到汛期期间,ATNN 评分稍低,晴空回波识别率平均值为87.56%,气象回波保留率平均值为86.38%;相比ATNN,NN(Neural Networks)对晴空回波的识别率稍高,但会把低空强度较低的大量气象回波误判为晴空回波,在非汛期期间气象回波保留率平均仅有54.96%。进一步利用全国15部云雷达资料评估验证,ATNN平均晴空回波剔除率为81.17%,气象回波保留率达93.89%,展现出良好的区域适应性。
, authors=梁振清
1, 2, 林子杨
3, 莫祖斯
2, 黄颖
1, 4, 孙云
5, authorsList=梁振清, 林子杨, 莫祖斯, 黄颖, 孙云, authorCompany=null, correspAuthors=黄颖, authorNote=
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1Laibin Meteorological Bureau of Guangxi Zhuang Autonomous Region, Laibin 546100
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1广西壮族自治区来宾市气象局, 来宾546100
2广西壮族自治区气象技术装备中心, 南宁530022, bio={"content":"
梁振清,男,硕士研究生,工程师,主要从事遥感卫星定量降水评估、深度学习的降水短临预报、水文模拟方面的研究。E-mail: liangzhenqing163@163.com
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梁振清,男,硕士研究生,工程师,主要从事遥感卫星定量降水评估、深度学习的降水短临预报、水文模拟方面的研究。E-mail: liangzhenqing163@163.com
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Journal of Applied Meteorological Science (in Chinese), 32(3): 347−357. doi:10.11898/1001-7313.20210307, articleTitle=null, refAbstract=null), Reference(id=1311998548682564285, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=26, rfOrder=34, authorNames=null, journalName=null, refType=null, unstructuredReference=张晋茹, 杨莲梅, 刘凡, 等. 2023. 基于Ka波段云雷达观测的中国西天山降雨云宏微观物理特征研究 [J]. 大气科学, 47(3): 756−768., articleTitle=null, refAbstract=null), Reference(id=1311998549160714942, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=26, rfOrder=35, authorNames=null, journalName=null, refType=null, unstructuredReference=Zhang Jinru, Yang Lianmei, Liu Fan, et al. 2023. 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Study of the microphysical characteristics of weak precipitation in Mêdog, southeastern Tibetan Plateau using Ka-Band cloud radar [J]. Chinese Journal of Atmospheric Sciences (in Chinese), 46(5): 1239−1252. doi:10.3878/j.issn.1006-9895.2205.21185, articleTitle=null, refAbstract=null)], funds=null, companyList=[AuthorCompany(id=1311998513030980139, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, xref=1, ext=[AuthorCompanyExt(id=1311998513068728876, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, companyId=1311998513030980139, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1Laibin Meteorological Bureau of Guangxi Zhuang Autonomous Region, Laibin 546100), AuthorCompanyExt(id=1311998513085506093, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, companyId=1311998513030980139, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1广西壮族自治区来宾市气象局, 来宾546100)]), AuthorCompany(id=1311998513890812462, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, xref=2, ext=[AuthorCompanyExt(id=1311998513915978287, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, companyId=1311998513890812462, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2Meteorological Technology and Equipment Center of Guangxi Zhuang Autonomous Region, Nanning 530022), AuthorCompanyExt(id=1311998513924366896, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, companyId=1311998513890812462, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2广西壮族自治区气象技术装备中心, 南宁530022)]), AuthorCompany(id=1311998514318631473, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, xref=3, ext=[AuthorCompanyExt(id=1311998514327020082, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, companyId=1311998514318631473, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3Fuchuan County Meteorological Bureau of Guangxi Zhuang Autonomous Region, Hezhou 542700), AuthorCompanyExt(id=1311998514335408691, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, companyId=1311998514318631473, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3广西壮族自治区富川县气象局, 贺州542700)]), AuthorCompany(id=1311998514394128948, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, xref=4, ext=[AuthorCompanyExt(id=1311998514402517557, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, companyId=1311998514394128948, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4Meteorological Information Center of Guangxi Zhuang Autonomous Region, Nanning 530021), AuthorCompanyExt(id=1311998514419294774, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, companyId=1311998514394128948, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4广西壮族自治区气象信息中心, 南宁530021)]), AuthorCompany(id=1311998514490597943, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, xref=5, ext=[AuthorCompanyExt(id=1311998514654175800, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, companyId=1311998514490597943, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
5Longlin County Meteorological Bureau of Guangxi Zhuang Autonomous Region, Baise 533000), AuthorCompanyExt(id=1311998514666758713, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, companyId=1311998514490597943, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
5广西壮族自治区隆林县气象局, 百色533000)])], figs=[ArticleFig(id=1311998523466408550, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Fig.1, caption=
Distribution map of millimeter wavelength cloud radar., figureFileSmall=v4Zbc5JQ3BnWk7weFWGmUw==, figureFileBig=jyTkDodcJqvQcbUvKr6oRg==, tableContent=null), ArticleFig(id=1311998523546100327, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=图1, caption=
毫米波云雷达分布图。, figureFileSmall=v4Zbc5JQ3BnWk7weFWGmUw==, figureFileBig=jyTkDodcJqvQcbUvKr6oRg==, tableContent=null), ArticleFig(id=1311998524322046568, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Fig.2, caption=
Observation and label sketch map on April 13, 2024: (a) Observation of echo intensity; (b) label value distribution., figureFileSmall=/8TU7+/8xN1auaCUUs/pYw==, figureFileBig=RcgohbUfXb8ZD0e+NIG6xA==, tableContent=null), ArticleFig(id=1311998526113014378, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=图2, caption=
2024年4月13日实况与标注示意图 :(a)实况观测回波强度;(b)标注值分布。, figureFileSmall=/8TU7+/8xN1auaCUUs/pYw==, figureFileBig=RcgohbUfXb8ZD0e+NIG6xA==, tableContent=null), ArticleFig(id=1311998526452753003, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Fig.3, caption=
Multi-Attention Neural Networks (ATNN) framework., figureFileSmall=vKEK58GL6HeimEKdzBz6YQ==, figureFileBig=fpixSjsUcQ1QZvFiitCbiQ==, tableContent=null), ArticleFig(id=1311998526914126444, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=图3, caption=
ATNN(Multi-Attention Neural Networks)框架示意图。, figureFileSmall=vKEK58GL6HeimEKdzBz6YQ==, figureFileBig=fpixSjsUcQ1QZvFiitCbiQ==, tableContent=null), ArticleFig(id=1311998527350334061, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Fig.4, caption=
Training loss of ATNN and NN (Neural Networks)., figureFileSmall=lXONpn3/5ubXaRLnHkNsjw==, figureFileBig=Kl5uPQ6Ht5QNPjavx4w/Jw==, tableContent=null), ArticleFig(id=1311998527417442926, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=图4, caption=
ATNN和 神经网络(NN)训练损失。, figureFileSmall=lXONpn3/5ubXaRLnHkNsjw==, figureFileBig=Kl5uPQ6Ht5QNPjavx4w/Jw==, tableContent=null), ArticleFig(id=1311998527669101167, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Fig.5, caption=
Performance of NN at the 100th, 200th, and 300th epochs., figureFileSmall=qKzT0F7OhCkt468AT4UkEg==, figureFileBig=Z6x24t5v9Tt6U2jssCCnuw==, tableContent=null), ArticleFig(id=1311998527782347376, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=图5, caption=
NN第100次、第200次、第300次训练周期效果。, figureFileSmall=qKzT0F7OhCkt468AT4UkEg==, figureFileBig=Z6x24t5v9Tt6U2jssCCnuw==, tableContent=null), ArticleFig(id=1311998528109503089, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Fig.6, caption=
Performance of ATNN at the 100th, 200th, and 300th epochs., figureFileSmall=BmAAxRp70YnX12qgkv6lIA==, figureFileBig=fq+UPe7Slw+NGaieyEBlFg==, tableContent=null), ArticleFig(id=1311998528197583474, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=图6, caption=
ATNN第100次、第200次、第300次训练周期效果。, figureFileSmall=BmAAxRp70YnX12qgkv6lIA==, figureFileBig=fq+UPe7Slw+NGaieyEBlFg==, tableContent=null), ArticleFig(id=1311998528252109427, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Fig.7, caption=
Meteorological echo retention rate and clear-air echo recognition rate curves of NN3C and NN4C during the (a) non-flood and (b) flood seasons., figureFileSmall=f8AbhZu7CHyyM7EBx9bG0Q==, figureFileBig=mmu5sN8sWdDf9ZLoPQjZkA==, tableContent=null), ArticleFig(id=1311998528591848052, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=图7, caption=
NN3C与NN4C在(a)非汛期和(b)汛期的气象回波保留率和晴空剔除率曲线变化。, figureFileSmall=f8AbhZu7CHyyM7EBx9bG0Q==, figureFileBig=mmu5sN8sWdDf9ZLoPQjZkA==, tableContent=null), ArticleFig(id=1311998528658956917, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Fig.8, caption=
Meteorological echo retention rate and clear-air echo recognition rate curves of ATNN and NN3C during (a) non-flood and (b) flood seasons., figureFileSmall=doQPtrwSMC5PjtJFAtMPZA==, figureFileBig=kyvAGRhCNJtIwCZukuKujA==, tableContent=null), ArticleFig(id=1311998530034688632, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=图8, caption=
ATNN与NN3C在(a)非汛期和(b)汛期的气象回波保留率和晴空剔除率曲线变化。, figureFileSmall=doQPtrwSMC5PjtJFAtMPZA==, figureFileBig=kyvAGRhCNJtIwCZukuKujA==, tableContent=null), ArticleFig(id=1311998530139546233, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Fig.9, caption=
(a) Reflectivity factor of observation, (b) result of the reflectivity factor after filtering clear-air echoes by NN, and (c) result of the reflectivity factor after filtering clear-air echoes by ATNN on March 2, 2024., figureFileSmall=oVFRLEJKcYBzt0i5zQ/q8Q==, figureFileBig=CPlCPFQ8duoQRTHiTVkjEw==, tableContent=null), ArticleFig(id=1311998530219238010, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=图9, caption=
2024年3月2日(a)反射率因子、(b)NN的识别结果和(c)ATNN的识别结果。, figureFileSmall=oVFRLEJKcYBzt0i5zQ/q8Q==, figureFileBig=CPlCPFQ8duoQRTHiTVkjEw==, tableContent=null), ArticleFig(id=1311998530307318395, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Fig.10, caption=
(a) Reflectivity factor of observation, (b) result of the reflectivity factor after filtering clear-air echoes by NN, and (c) result of the reflectivity factor after filtering clear-air echoes by ATNN on July 2, 2024., figureFileSmall=TsbyxwWZP6B2T5A2O4VcyQ==, figureFileBig=QLCse4KUl2MOKQnWytqtqA==, tableContent=null), ArticleFig(id=1311998530592531068, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=图10, caption=
2024年7月2日(a)反射率因子、(b)NN的识别结果和(c)ATNN的识别结果。, figureFileSmall=TsbyxwWZP6B2T5A2O4VcyQ==, figureFileBig=QLCse4KUl2MOKQnWytqtqA==, tableContent=null), ArticleFig(id=1311998530680611453, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Fig.11, caption=
(a) Reflectivity factor of observation, (b) result of the reflectivity factor after filtering clear-air echoes by NN, and (c) result of the reflectivity factor after filtering clear-air echoes by ATNN on July 30, 2024., figureFileSmall=0aXs7h3VRyLJ+imHad9UgA==, figureFileBig=vLF8z9kHA2NX7BQQTnRh7g==, tableContent=null), ArticleFig(id=1311998530764497534, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=图11, caption=
2024年7月30日(a)反射率因子、(b)NN的识别结果和(c)ATNN的识别结果。, figureFileSmall=0aXs7h3VRyLJ+imHad9UgA==, figureFileBig=vLF8z9kHA2NX7BQQTnRh7g==, tableContent=null), ArticleFig(id=1311998531079070335, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Fig.12, caption=
Meteorological echo retention rate and clear-air echo recognition rate curves of ATNN and ATNN_Extra during (a) non-flood and (b) flood seasons., figureFileSmall=Zc9Be96ykj7h5boZ0Siy9g==, figureFileBig=s71az8EWLncLbSn9kaXN7w==, tableContent=null), ArticleFig(id=1311998531473334912, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=图12, caption=
ATNN与ATNN_Extra在(a)非汛期和(b)汛期期间的气象回波保留率和晴空剔除率曲线变化。, figureFileSmall=Zc9Be96ykj7h5boZ0Siy9g==, figureFileBig=s71az8EWLncLbSn9kaXN7w==, tableContent=null), ArticleFig(id=1311998531913736833, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Fig.13, caption=
(a) Reflectivity factor of observation, (b) result of the reflectivity factor after filtering clear-air echoes by ATNN, and (c) result of the reflectivity factor after filtering clear-air echoes by ATNN_Extra on March 2, 2024., figureFileSmall=h3jcOGv2pgSllKKNeXrnGA==, figureFileBig=RUrTd21LiqDt09fHbAaESA==, tableContent=null), ArticleFig(id=1311998532341555842, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=图13, caption=
2024年3月2日(a)反射率因子、(b)ATNN的识别结果和(c)ATNN_Extra的识别结果。, figureFileSmall=h3jcOGv2pgSllKKNeXrnGA==, figureFileBig=RUrTd21LiqDt09fHbAaESA==, tableContent=null), ArticleFig(id=1311998532719043203, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Fig.14, caption=
(a) Reflectivity factor of observation, (b) result of the reflectivity factor after filtering clear-air echoes by ATNN, and (c) result of the reflectivity factor after filtering clear-air echoes by ATNN_Extra on July 2, 2024., figureFileSmall=p9k7HCHmjF/5JxE1P3GtIw==, figureFileBig=TPF2l75xpkcpeYGKM02i9Q==, tableContent=null), ArticleFig(id=1311998533134279300, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=图14, caption=
2024年7月2日(a)反射率因子、(b)ATNN的识别结果和(c)ATNN_Extra的识别结果。, figureFileSmall=p9k7HCHmjF/5JxE1P3GtIw==, figureFileBig=TPF2l75xpkcpeYGKM02i9Q==, tableContent=null), ArticleFig(id=1311998533545321094, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Fig.15, caption=
(a) Reflectivity factor of observations, (b) result of the reflectivity factor after filtering clear-air echoes by ATNN, and (c) result of the reflectivity factor after filtering clear-air echoes by ATNN_Extra on July 30, 2024., figureFileSmall=s21WvSt+VYDUJx6a/E5lvg==, figureFileBig=WuwXSvnsyx18Ws+hknL77g==, tableContent=null), ArticleFig(id=1311998533658567304, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=图15, caption=
2024年7月30日(a)反射率因子、(b)ATNN的识别结果和(c)ATNN_Extra的识别结果。, figureFileSmall=s21WvSt+VYDUJx6a/E5lvg==, figureFileBig=WuwXSvnsyx18Ws+hknL77g==, tableContent=null), ArticleFig(id=1311998533981528713, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Tab.1, caption=
Operating modes of the Baise millimeter wavelength cloud radar
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 边界层模式 | 中云模式 | 卷云模式 |
| 脉冲宽度 | 0.2 μs | 8 μs | 24 μs |
| 脉压比 | 1 | 40 | 120 |
| 距离分辨力 | 30 m | 30 m | 30 m |
| 脉冲重复周期 | 60 μs | 120 μs | 120 μs |
| 相干积累数 | 4 | 1 | 1 |
| FFT点数 | 256 | 256 | 256 |
| 探测盲区 | 30 m | 1200 m | 3600 m |
| 最大不模糊距离 | 9000 m | 18000 m | 18000 m |
| 最大不模糊速度 | 8.927 m s−1 | 17.85 m s−1 | 17.85 m s−1 |
), ArticleFig(id=1311998534392570506, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=表1, caption=
百色毫米波云雷达工作模式
, figureFileSmall=null, figureFileBig=null, tableContent=
| 项目 | 边界层模式 | 中云模式 | 卷云模式 |
| 脉冲宽度 | 0.2 μs | 8 μs | 24 μs |
| 脉压比 | 1 | 40 | 120 |
| 距离分辨力 | 30 m | 30 m | 30 m |
| 脉冲重复周期 | 60 μs | 120 μs | 120 μs |
| 相干积累数 | 4 | 1 | 1 |
| FFT点数 | 256 | 256 | 256 |
| 探测盲区 | 30 m | 1200 m | 3600 m |
| 最大不模糊距离 | 9000 m | 18000 m | 18000 m |
| 最大不模糊速度 | 8.927 m s−1 | 17.85 m s−1 | 17.85 m s−1 |
), ArticleFig(id=1311998534795223691, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Tab.2, caption=
Clear-air echo identification criteria
, figureFileSmall=null, figureFileBig=null, tableContent=
| 回波类型 | 判别依据 |
| 无云晴空 | 激光雷达无后向散射信号;能见度大于10 km;相对湿度小于 60% ;雨量为0 |
| 低云或层状云 | 激光雷达有连续弱回波(高度<3 km)且能见度下降但无降水 |
| 降水 | 雨量站记录大于 0.1 mm h−1 或双偏振雷达识别出降水特征 |
| 昆虫或生物回波 | 出现在白天边界层内(<3 km)、具有强垂直梯度、与温度或者风速日变化相关,且激光雷达无对应云信号 |
| 地物或固定杂波 | 时空位置固定、多普勒速度接近0、出现在近地面 |
), ArticleFig(id=1311998534891692684, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=表2, caption=
晴空判别依据
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| 回波类型 | 判别依据 |
| 无云晴空 | 激光雷达无后向散射信号;能见度大于10 km;相对湿度小于 60% ;雨量为0 |
| 低云或层状云 | 激光雷达有连续弱回波(高度<3 km)且能见度下降但无降水 |
| 降水 | 雨量站记录大于 0.1 mm h−1 或双偏振雷达识别出降水特征 |
| 昆虫或生物回波 | 出现在白天边界层内(<3 km)、具有强垂直梯度、与温度或者风速日变化相关,且激光雷达无对应云信号 |
| 地物或固定杂波 | 时空位置固定、多普勒速度接近0、出现在近地面 |
), ArticleFig(id=1311998535269180045, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Tab.3, caption=
Evaluation indicators
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| 评估指标 | 表达式 | 范围 | 最优值 |
| 晴空回波剔除率(Rc) | $ \dfrac{{N}_{1}}{{N}_{R1}} $ | 0%~100% | 100% |
| 气象回波保留率(Rm) | $ \dfrac{{N}_{0}}{{N}_{R0}} $ | 0%~100% | 100% |
), ArticleFig(id=1311998535688610446, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=表3, caption=
模型评估指标
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| 评估指标 | 表达式 | 范围 | 最优值 |
| 晴空回波剔除率(Rc) | $ \dfrac{{N}_{1}}{{N}_{R1}} $ | 0%~100% | 100% |
| 气象回波保留率(Rm) | $ \dfrac{{N}_{0}}{{N}_{R0}} $ | 0%~100% | 100% |
), ArticleFig(id=1311998536091263631, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=EN, label=Tab.4, caption=
Comparison table of meteorological echo retention rate and clear-air echo recognition rate based on the number of attention heads and model depth
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| 2024年2月14日至2024年4月13日(非汛期) | | 2024年6月25日至8月20日(汛期) |
| 气象回波保留率 | 晴空回波剔除率 | | 气象回波保留率 | 晴空回波剔除率 |
| 注:加粗显示所对应的参数配置,即为本次验证评估环节所采用的模型参数。 |
Depth=1 Head=1 | 73.78% | 76.98% | | 94.21% | 85.83% |
Depth=1 Head=2 | 74.04% | 74.66% | | 94.19% | 86.32% |
Depth=1 Head=11 | 74.80 | 75.84 | | 94.29% | 86.47% |
Depth=2 Head=1 | 86.71% | 85.88% | | 94.51% | 91.55% |
Depth=2 Head=2 | 86.40% | 86.58% | | 94.34% | 91.85% |
Depth=2 Head=11 | 86.50 | 86.06% | | 94.33% | 91.53% |
Depth=3 Head=1 | 86.82% | 86.40% | | 94.52% | 91.70% |
Depth=3 Head=2 | 86.37% | 87.14% | | 94.29% | 91.95% |
Depth=4 Head=2 | 86.38% | 87.56% | | 94.28% | 91.98% |
Depth=5 Head=2 | 86.45% | 87.54% | | 94.36% | 91.83% |
Depth=6 Head=2 | 86.91% | 86.38% | | 94.39% | 91.60% |
), ArticleFig(id=1311998536175149712, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=表4, caption=
注意力头数量(Head)与模型深度(Depth)的气象回波保留率和晴空回波剔除率对照表
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| 2024年2月14日至2024年4月13日(非汛期) | | 2024年6月25日至8月20日(汛期) |
| 气象回波保留率 | 晴空回波剔除率 | | 气象回波保留率 | 晴空回波剔除率 |
| 注:加粗显示所对应的参数配置,即为本次验证评估环节所采用的模型参数。 |
Depth=1 Head=1 | 73.78% | 76.98% | | 94.21% | 85.83% |
Depth=1 Head=2 | 74.04% | 74.66% | | 94.19% | 86.32% |
Depth=1 Head=11 | 74.80 | 75.84 | | 94.29% | 86.47% |
Depth=2 Head=1 | 86.71% | 85.88% | | 94.51% | 91.55% |
Depth=2 Head=2 | 86.40% | 86.58% | | 94.34% | 91.85% |
Depth=2 Head=11 | 86.50 | 86.06% | | 94.33% | 91.53% |
Depth=3 Head=1 | 86.82% | 86.40% | | 94.52% | 91.70% |
Depth=3 Head=2 | 86.37% | 87.14% | | 94.29% | 91.95% |
Depth=4 Head=2 | 86.38% | 87.56% | | 94.28% | 91.98% |
Depth=5 Head=2 | 86.45% | 87.54% | | 94.36% | 91.83% |
Depth=6 Head=2 | 86.91% | 86.38% | | 94.39% | 91.60% |
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Meteorological echo retention rate and clear-air echo recognition rate of ATNN and Extra Trained ATNN at 15 millimeter wavelength cloud radar stations in China
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| 站点名称(天数) | 气象回波保留率 | 晴空回波剔除率 | Extra Trained气象回波保留率 | Extra Trained晴空回波剔除率 |
| 天津(54天) | 99.67% | 78.81% | 99.46% | 94.35% |
| 射阳(55天) | 98.15% | 85.92% | 98.21% | 90.92% |
| 汕头(142天) | 73.68% | 87.91% | 71.29% | 93.37% |
| 衢州(122天) | 94.22% | 69.10% | 93.18% | 86.44% |
| 郑州(150天) | 95.78% | 86.80% | 95.46% | 93.53% |
| 哈尔滨(109天) | 88.73% | 89.90% | 87.24% | 96.75% |
| 克拉玛依(163天) | 94.12% | 79.60% | 93.71% | 92.69% |
| 温江(162天) | 95.96% | 82.17% | 95.21% | 87.62% |
| 呼和浩特(120天) | 98.46% | 76.98% | 98.12% | 89.77% |
| 贵阳(37天) | 89.03% | 87.51% | 87.76% | 91.92% |
| 民丰(165天) | 98.89% | 81.83% | 98.62% | 94.05% |
| 思茅(45天) | 94.51% | 88.87% | 93.40% | 94.31% |
| 巴塘(98天) | 99.30% | 71.94% | 98.83% | 92.26% |
| 茫崖(108天) | 99.40% | 72.86% | 99.10% | 94.81% |
| 定日(43天) | 88.50% | 85.77% | 87.51% | 94.32% |
), ArticleFig(id=1311998537018204818, tenantId=1146029695717560320, journalId=1311385791232049272, articleId=1311998496266347007, language=CN, label=表5, caption=
ATNN和额外训练ATNN_Extra在全国15个毫米波云雷达站的气象回波保留率和晴空回波识别率表
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| 站点名称(天数) | 气象回波保留率 | 晴空回波剔除率 | Extra Trained气象回波保留率 | Extra Trained晴空回波剔除率 |
| 天津(54天) | 99.67% | 78.81% | 99.46% | 94.35% |
| 射阳(55天) | 98.15% | 85.92% | 98.21% | 90.92% |
| 汕头(142天) | 73.68% | 87.91% | 71.29% | 93.37% |
| 衢州(122天) | 94.22% | 69.10% | 93.18% | 86.44% |
| 郑州(150天) | 95.78% | 86.80% | 95.46% | 93.53% |
| 哈尔滨(109天) | 88.73% | 89.90% | 87.24% | 96.75% |
| 克拉玛依(163天) | 94.12% | 79.60% | 93.71% | 92.69% |
| 温江(162天) | 95.96% | 82.17% | 95.21% | 87.62% |
| 呼和浩特(120天) | 98.46% | 76.98% | 98.12% | 89.77% |
| 贵阳(37天) | 89.03% | 87.51% | 87.76% | 91.92% |
| 民丰(165天) | 98.89% | 81.83% | 98.62% | 94.05% |
| 思茅(45天) | 94.51% | 88.87% | 93.40% | 94.31% |
| 巴塘(98天) | 99.30% | 71.94% | 98.83% | 92.26% |
| 茫崖(108天) | 99.40% | 72.86% | 99.10% | 94.81% |
| 定日(43天) | 88.50% | 85.77% | 87.51% | 94.32% |
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