| 水滴冻结实验测量降水物中的冻结核含量 |
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| 引用本文： | 酆大雄,杨绍忠,陈汝珍,蒋耿旺.水滴冻结实验测量降水物中的冻结核含量[J].气象学报,2002,60(3):370-377. |
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| 作者姓名： | 酆大雄 杨绍忠 陈汝珍 蒋耿旺 |
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| 作者单位： | 中国气象科学研究院,北京,100081 |
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| 基金项目： | 国家自然科学基金 (4 93 75 2 2 9) |
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| 摘 要： | 文中介绍了一套新研制的均匀水滴冻结实验装置 ,实验水滴与周围环境同步冷却 ,其温度梯度很小 ,可控制降温速率 ,并能自动记录冻结事件 ,从而提高了实验的精度。用此装置对北京地区 1995年底至 1998年出现的各类降水样品进行了实验 ,由水滴冻结温度谱推算了降水的冻结核浓度 温度谱 ,并对结果进行了分析和讨论
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| 关 键 词： | 水滴冻结 结实验装置 浸入冻结核化 冻结核浓度 |
| 收稿时间： | 1999/10/8 0:00:00 |
| 修稿时间： | 1999年10月8日 |
MEASUREMENTS OF ICE NUCLEI IN PRECIPITATION WATER BY DROP-FREEZING EXPERIMENTS |
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| Feng Daxiong,Yang Shaozhong,Chen Ruzhen and Jiang Gengwang.MEASUREMENTS OF ICE NUCLEI IN PRECIPITATION WATER BY DROP-FREEZING EXPERIMENTS[J].Acta Meteorologica Sinica,2002,60(3):370-377. |
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| Authors: | Feng Daxiong Yang Shaozhong Chen Ruzhen and Jiang Gengwang |
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| Institution: | Chinese Academy of Meteorological Sciences, Beijing 100081;Chinese Academy of Meteorological Sciences, Beijing 100081;Chinese Academy of Meteorological Sciences, Beijing 100081;Chinese Academy of Meteorological Sciences, Beijing 100081 |
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| Abstract: | A new developed device of drop freezing experiment is described, the drops are cooled synchronously with surroundings, therefore, the temperature gradient of drops themselves is very small and the precision of experiments is improved.The cooling rate of the cold stage can be controlled and the freezing events are automatically recorded. The drop freezing experiments have been carried out for several kinds of precipitation water which were sampled in Beijing from the end of 1995 to 1998. The freezing nucleus content calculated from spectra of freezing temperature of drops is given for each kind of precipitation, the differences among them are significant and the reasons are preliminarily discussed. |
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| Keywords: | Freezing drop experiment Immersion freezing nucleation Freezing ice nucleus concentration |
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