Presentation Title: | Chinese Acoustic Rain Enhancement Experiments and Effect Analysis |
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Full Name: | Zhanyu YAO |
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Affiliation / Institution: | China Meteorological Administration Weather Modification Centre, Beijing 100081, China |
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Co-Author |
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Full Name: | Zhen LIU |
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Affiliation / Institution: | China Meteorological Administration Weather Modification Centre, Beijing 100081, China |
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Co-Author 2 |
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Full Name: | Jinzhao WANG |
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Affiliation / Institution: | State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084; China |
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Co-Author 3 |
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Full Name: | Jie ZHAO |
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Affiliation / Institution: | State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084; China |
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Co-Author 4 |
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Full Name: | Liang CHENG |
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Affiliation / Institution: | State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084; China |
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Co-Author 5 |
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Full Name: | Tiejian LI |
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Affiliation / Institution: | State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084; China |
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Co-Author 6 |
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Full Name: | Jun QIU |
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Affiliation / Institution: | State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084; China |
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Co-Author 7 |
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Full Name: | Zequn ZHANG |
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Affiliation / Institution: | China Meteorological Administration Weather Modification Centre, Beijing 100081, China |
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Co-Author 9 |
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Full Name: | Qi YAO |
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Affiliation / Institution: | Qinghai Haiqing Qiangsheng Technology Co., Ltd, Xining, 810016, China |
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Co-Author 8 |
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Full Name: | Hengzhuang WANG |
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Affiliation / Institution: | Qinghai Haiqing Qiangsheng Technology Co., Ltd, Xining, 810016, China |
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Abstract: | As an effective particulate removal technique, acoustic agglomeration has potential application in the fields of weather modification. It is a cost-effective and environmentally friendly approach, without using catalysts such as silver iodide and having better controllability and target directivity. Acoustic waves are used to manipulate the motion of airborne particles through utilization of the energy transmission and momentum exchange between acoustic waves and discrete particles to intensify the vibration and collision processes of aerosols and droplets and then improve agglomeration efficiency. Acoustic coalescence can enhance existing precipitation or promote initiation of precipitation.
As for this technology, more than 300 field experiments were performed in China since 2017 to reveal the influences of acoustic waves on cloud-precipitation processes. Some researchers conducted on the mechanism of acoustic rain enhancement on micro-scale, small-scale and prototype scale. The ground-based observations show that acoustic waves can significantly affect the rainfall distribution and microstructure of precipitation particles. To more comprehensively characterize acoustic intervention effects and obtain physical evidence of rain enhancement, more studies with detailed monitoring of the cloud-precipitation processes were performed, and some results with physical evidences have been demonstrated by effect analysis. |
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