摘要
本文用差分方法，对决定性的正压涡度方程实施了四组数值积分。根据模式输出量，求得了台风中心移速的一维序列和二维序列。计算了移速序列的关联维数和Ｋ熵。结果表明模式大气中台风中心的移动具有内在随机性。最后讨论了局域热源和基流对台风移动路径随机性和可预测性的影响。
A difference scheme is adopted to perform numerical integrations of a deterministic barotropic vorticity equation for four designed experiments, and the 1-D and 2-D sequences are obtained for the velocity of the typhoon center with the aid of model output, together with the correlation dimension and K entropy investigated. Results show that there exists randomness inherent in the center movement in the model atmosphere. Eventually the influence of localized heat sources and basic flow upon the stochasticity and predictability of the track of the tempest is discussed.
出处
《气象学报》
CSCD
北大核心
1994年第1期17-24,共8页
Acta Meteorologica Sinica
基金
国家自然科学基金资助
关键词
台风
数值计算
关联维数
随机性
Typhoon
Numerical Computation
Correlation dimension
K entropy.
