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投稿时间：2009-06-03 修订日期：2009-09-16
投稿时间：2009-06-03 修订日期：2009-09-16
中文摘要: 为探讨1980年地面气象观测规范变更对能见度资料连续性，采用累积百分率法、Ridit 分析法、“非常好”能见度分析法等工具，对1951—2006年南宁、桂林城市大气能见度变化进行了分析。分析显示：南宁、桂林能见度高值在1980年相对1979年迅速下降，并导致平均Ridit 值，“非常好”能见度天数迅速降低，其原因是1980年采用新《地面气象观测规范》的结果，采用能见度高值、Ridit 值、“非常好”能见度对比分析1980年前后的能见度变化是不可信的；南宁、桂林能见度中、低值受1980年采用新的《地面气象观测规范》的影响较小，保持了很好的连续性，资料跨越1980年是连续可靠的，可以用来进行对比分析1980年前后的能见度变化。
中文关键词: 观测规范, 变更, 能见度
Abstract:Ground weather monitoring specification has been changed in 1980. To well understand the effect of the change to the visibility data continuity, the visibility data in Nanning and Guilin from 1951 to 2006 are analyzed using the accumulated percentage method, Ridit method and “very good day” method. The results show that high values of visibility in Nanning and Guilin rapidly decrease in 1980 in contrast to 1979, which results in rapidly descending of Ridit average value and “very good day” number. The reason for rapid decrease is the change of ground weather monitoring specification in 1980. Therefore it is unreliable to use visibility high value, Ridit average value and “very good day” number to analyze visibility data around 1980.But visibility middle value and low value in Nanning and Guilin are not affected by the change of ground weather monitoring specification in 1980, which means it is reliable to use visibility middle value and low value to analyze visibility data around 1980.
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基金项目:
| 作者 | 单位 |
| 李雄 | 广西气象科技服务中心，南宁 530022 |
| Author Name | Affiliation |
| LI Xiong | Guangxi Meteorological Science and Technique Service Center, Nanning 530022 |
引用文本：
李雄,2010.1980年地面气象观测规范变更对能见度资料连续性影响研究[J].气象,36(3):117-122.
LI Xiong,2010.Effect of Changing of Ground Weather Monitoring Specification in 1980 on Visibility Data Continuity[J].Meteor Mon,36(3):117-122.
李雄,2010.1980年地面气象观测规范变更对能见度资料连续性影响研究[J].气象,36(3):117-122.
LI Xiong,2010.Effect of Changing of Ground Weather Monitoring Specification in 1980 on Visibility Data Continuity[J].Meteor Mon,36(3):117-122.