摘要
本文给出了平流层50hPa距平场13个特征波型和用288个格点距平资料计算的自相关系数分布图和500hPa288个格点及敏感区6个格点距平资料计算的相关系数分布图。三者之间非常相似。这意味着平流层和对流层之间是紧密相关的。50hPa自相关系数图反映的是超长波1—3波系统演变趋势,而500hPa相关系数图在秋季反映的是3波槽脊系统,冬夏季却反映的是2波系统,这足以说明50hPa距平场13个特征波型是平流层大气客观存在的运动形式。我们还发现它们在各自的季变年变过程中存在着显著的演变规律和相当长的稳定性,是大气环流未来变化和发生各种灾害性天气气候过程的重要影响因子。
In this paper, the self-correlation coefficients chart (for 288 points) of the 13 anomaly characteristic patterns at 50 hPa and the point-correlation coefficients chart for the 288 points at 500 hPa and the 6 points in the sensitive regions have been drawn up and analysed. The three charts are very similar each other. This means that the stratosphere and troposphere are close related. The self-correlation chart at 50 hPa shows the evolution of the ultra-longwave system for wave number 1-3 all the year, while the point-correlation charts at 500 hPa show the evolutions of wave number 3 in autumn and wave number 2 in winter and summer. This sufficiently explains that the 13 anomaly characteristic patterns show the main atmospheric circulation characteristics in the stratosphere.
Besides, we discovered that there are some evident evolutional rules in the seasonal and annual variations for each correlation and they are stable for a long period.
These are very important on foreasting all kinds of the catastrophic weather and climatic processes.
出处
《高原气象》
CSCD
北大核心
1992年第3期275-284,共10页
Plateau Meteorology
关键词
平流层
距平场
波型
季节变化
Wave patterns of anomalous distribution characteristics
Correlation coefficient
Ultra-longwave system
Long-range stability.
