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气象:2020,46(7):938-947
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天气雷达监测生物跨海迁飞方法
滕玉鹏,陈洪滨,马舒庆,吴东丽,周燕,崔铠
(中国科学院大气物理研究所,北京 100029; 中国科学院大学,北京 100049; 中国气象局气象探测中心,北京 100081; 中国农业科学院植物保护研究所,北京 100193; 北京理工大学,北京 100081)
Weather Radar Identification of Directional Biological Migrations Across the Sea
TENG Yupeng,CHEN Hongbin,MA Shuqing,WU Dongli,ZHOU Yan,CUI Kai
(Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029; University of Chinese Academy of Sciences, Beijing 100049; CMA Meteorological Observation Centre, Beijing 100081; Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193; Beijing Institute of Technology, Beijing 100081)
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投稿时间:2019-06-10    修订日期:2019-09-01
中文摘要: 通过对S波段天气雷达的多普勒速度进行滤波,得到了因生物定向迁飞而产生的雷达径向速度偏差,可有效地区分出定向迁飞生物的跨海迁徙活动。结果表明:通过对雷达同距离多普勒速度进行低通滤波处理,可有效地将定向迁飞生物从大气湍流产生的晴空回波中分离,实现监测定向迁飞生物的跨海迁飞活动。为验证算法,通过对美国KICT雷达2012年9月30日夜间的一次生物迁徙过程进行验证,成功地仅依靠多普勒速度和反射率因子,将定向迁飞的鸟类从昆虫中分离。依照中国农业科学院植物保护研究所长岛有害生物防治野外科学观测实验站的人工观测结果,分析渤海海峡2017年5月30日夜间存在粘虫迁飞的时间段的雷达数据,表明该方法可有效地识别、监测定向迁飞生物在渤海海峡上空的迁飞活动。
Abstract:By filtering the Doppler velocity of S-band weather radar, the wind radial velocity deviation caused by biological directional migration is obtained, which can effectively distinguish the cross-sea migration activities of directional migratory organisms. The results show that the low-pass filtering of radar Doppler velocity at the same range can effectively separate the directional migratory organisms from the clear-sky echoes generated by undirected plankton and atmospheric turbulence. It also can realize the monitoring of the directional migratory organisms’ cross-sea migration activities, and provide the data of their migration paths in the process of migration. In order to verify the algorithm, through the verification of a biological migration process of the US KICT radar over the night of 30 September 2012, the successful seperation of the birds, which is migrated from the insects, was successfully relied on the Doppler velocity and reflectivity factors. According to the artificial observation results of Changdao Pest Control Field Scien-tific Observation Station, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, the radar data analysis of the night migration period of armyworm in the Bohai Strait on 30 May 2017 shows that this method can effectively identify and monitor the activities of orientated migrating organisms over the Bohai Strait.
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基金项目:国家自然科学基金国家重大科研仪器研制(部委推荐)项目(31727901)资助
引用文本:
滕玉鹏,陈洪滨,马舒庆,吴东丽,周燕,崔铠,2020.天气雷达监测生物跨海迁飞方法[J].气象,46(7):938-947.
TENG Yupeng,CHEN Hongbin,MA Shuqing,WU Dongli,ZHOU Yan,CUI Kai,2020.Weather Radar Identification of Directional Biological Migrations Across the Sea[J].Meteor Mon,46(7):938-947.