Artificial rainfall experiment involving seeding of liquid carbon dioxide at karatsu in saga
Artificial rainfall experiment involving seeding of liquid carbon dioxide at karatsu in saga
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在佐贺唐津进行液态二氧化碳人工降雨实验
DOI：
10.2480/agrmet.d-17-00002
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发表时间：
2018
影响因子：
1.3
通讯作者：
K. Wakimizu
中科院分区：
文献类型：
--
作者：
T. Maki;K. Nishiyama;O. Morita;Yoshinori Suzuki;K. Wakimizu
本研究的目的是增加人工降雨并评估受人工降雨影响的区域。实验于2013年12月26日在日本佐贺唐津市周围，以11.1 g/s的播撒速度，在2500m高空播撒液态二氧化碳，持续6min。播撒后30min，云层高度显着增加，在2100m云底下观测到了云朵。前播云云顶为3350 m，云底为2100 m，云深为1250 m。 30分钟后云顶为3500m，云底为2100m，云深为1400m，深度增加了150m。 3050 m 播种时间附近的风向和风速分别为 WSW 和 13.9 m/s。播种后1小时，可以清楚地看到福津和宗像周围的人造云，1小时30分钟后，云出现在北九州周围。 2小时后，受人造云影响的最终距离超过100公里。宗像、八幡、下关的人工降雨量预计分别为 1.0、1.0、0.5 毫米。预计2小时后人工降雨量和自然降雨量或水资源量各为15万吨。雷达回波人工降雨估算与地面降雨量吻合较好。在目标地区观测到人工降雨，降雨量最终增加。
Th e purposes of this research were to increase artificial rainfall and evaluate the area affected by artificial rainfall. The experiment involved the seeding of liquid carbon dioxide at a height of 2500 m with a seeding rate of 11.1 g/s for 6 min around Karatsu, Saga, Japan on Dec. 26, 2013. The height of the cloud increased significantly, and a virga was observed under the cloud bottom at 2100 m at 30 min after the seeding. The cloud top of the previous seeding cloud was at 3350 m, the cloud bottom was at 2100 m, and the cloud depth was 1250 m. The cloud top after 30 min was at 3500 m, the cloud bottom was at 2100 m, the cloud depth was 1400 m, and the depth had increased by 150 m. The wind direction and speed around the seeding time at 3050 m were WSW and 13.9 m/s, respectively. At 1 h after the seeding, artificial clouds around Fukutsu and Munakata were clearly recognized, and after 1 h 30 min the clouds were around Kitakyushu. The final distance affected by artificial clouds was over 100 km after 2 h. The artificial rainfall (precipitation) amounts at Munakata, Yahata, and Shimonoseki were estimated to be 1.0, 1.0, and 0.5 mm, respectively. The amounts of artificial and natural rainfall or water resources were both estimated to be 0.15 million tons each after 2 h. The estimation of artificial rainfall by radar echo and the surface rainfall agreed well with each other. The artificial rainfall was observed at a target region and the amount of rainfall ultimately increased.