| 摘要: |
| 【目的】为评估DSG1型和DSG5型国产降水现象仪在测量降水方面的性能。【方法】挑选鲁南地区降水过程、强度和持续时间较一致且相邻2个国家气象观测站不同型号的降水现象仪和自动气象站2017年9月—2020年8月5年降水观测资料，对比分析了这两种不同型号降水现象仪和自动气象站观测降水的差异。【结果】（1）两种降水现象仪和自动气象站观测的降水时间基本相同，但DSG1型和DSG5型比自动气象站分别偏多约2.2%、3.7%；（2）两种降水现象仪分钟降水量、小时降水量和日降水量都比自动气象站偏小；（3）在中等降水强度及以下，两种降水现象仪观测的降水量大小基本一致，但降水强度较大时，降水量大小不一致且分散；（4）两种降水现象仪与自动气象站的分钟、小时和日降水量差值百分比均值变化不同，说明其在测量降水方面性能略有差异。【结论】由于测量原理和时间及空间分辨率不同于自动气象站雨量计，这两种降水现象仪在观测业务中有着良好的表现，对降水开始和结束时刻记录的更早更准确。 |
| 关键词: 降水现象仪;自动气象站;降水量;差值百分比 |
| DOI： |
| 投稿时间：2023-03-16修订日期：2023-07-21 |
| 基金项目:山东省气象局面上项目（2019sdqxm16)：雨滴谱资料在雷达定量降水估测中的应用研究 |
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| Evaluation of the Performance of Two Different Types of Precipitation Phenomenon Meters in Precipitation Observation |
| Zhao Yong,Chen Lifeng |
| (Zaozhuang Weather Bureau) |
| Abstract: |
| To evaluate the performance of DSG1 and DSG5 precipitation phenomenon meters in measuring precipitation, this article uses the precipitation data collected by two types of precipitation phenomenon meters and automatic weather stations of two adjacent national meteorological observatories in southern Shandong Province from September 2017 to August 2020 because of their consistency in precipitation process features, intensity and duration. The evaluation results are as follows: (1) The precipitation time numbers observed by the two precipitation phenomenon meters and automatic weather stations are basically the same, but the observed precipitation time numbers from the two precipitation phenomenon meters are about 2.2% and 3.7% more than those by automatic weather stations, respectively. (2) The minutely precipitation, hourly precipitation and daily precipitation of these two phenomenon meters are all less than those of automatic weather stations. (3) At moderate precipitation intensity and below, the precipitation amounts measured by the two precipitation phenomenon meters are basically the same, but when the precipitation intensity is larger, their measured precipitation amounts are different and scattered. (4) The variations of the percentage mean values of the difference between the two precipitation phenomenon meters and automatic weather stations in the minutely, hourly and daily precipitation show that the performance of the two precipitation phenomenon meters is slightly different in measuring precipitation. In conclusion, the two precipitation phenomenon meters have shown good performance in observation operations due to their difference from the rain gauges of automatic weather stations in measurement principles and spatio-temporal resolutions, and they can record the start and end time of precipitation earlier and more accurately. |
| Key words: precipitation phenomenon meters; automatic weather station; precipitation amount; percentage of difference |
