| 摘要: |
| 利用贵阳基准站2004—2020年17 a的自动翻斗雨量器、人工雨量筒、虹吸雨量计降水量资料，对3种观测方式的年、月、日降水量偏差程度及自动与虹吸自记观测小时降水量差值进行分析。结果表明：自动比人工、虹吸自记观测降水量偏大，偏差集中在±5%以内，人工与虹吸自记观测降水量偏差最小。日降水量≤10 mm的天数占总降水日数的75.2%，其中自动与人工雨量观测偏差超常的天数占6.8%；剩余日降水量＞10 mm的天数中自动与人工雨量观测偏差超常的天数占26.6%。自动与虹吸自记观测小时降水量偏差超常时的差值绝对值与小时降水量呈高度正相关。 |
| 关键词: 自动观测；人工观测；降水量差异 |
| DOI： |
| 投稿时间：2021-08-29 |
| 基金项目: |
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| Analysis of Precipitation Difference between Automatic and Manual Observation at Guiyang Station |
| WU Youheng,MIN Changhong,WU Shimei,ZHANG Jie,BAI Yongkun |
| (Guiyang Meteorological Bureau of Guizhou Province, Guiyang 550001 , China) |
| Abstract: |
| Based on the precipitation data of automatic tip bucket rain gauge, manual rain gauge and siphon rain gauge at Guiyang reference station from 2004 to 2020, the deviation degree of annual, monthly and daily precipitation and the difference between automatic and siphon self-recording observation hours of precipitation were analyzed. The results show that: automatic precipitation is larger than manual and siphon self-recording precipitation, and the deviation is concentrated within ±5%, and the deviation between manual and siphon self-recording precipitation is the least. The days with daily precipitation≤10mm accounted for 75.2% of the total precipitation days, and the days with abnormal deviation between automatic and manual rainfall observation accounted for 6.8%. Among the days with precipitation＞10 mm in the remaining days, the deviation between automatic and manual rainfall observation was 26.6%. The absolute difference value of automatic and siphon recording observation when the hourly precipitation deviation is over normal is highly positive correlation with hourly precipitation. |
| Key words: automatic observation； manual observation； precipitation difference |
