青藏高原和西太平洋高低层热源异常对定常波的影响
投稿时间:1995-04-17  修订日期:1996-01-15  点此下载全文
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作者单位
姚日升 南京气象学院气象学系, 南京 210044 
唐东升 南京气象学院气象学系, 南京 210044 
田永祥 南京气象学院气象学系, 南京 210044 
基金项目:国家自然科学基金
中文摘要:利用定常态原始方程三维谱模式,就青藏高原和西太平洋高、低层热源异常对定常波的影响进行了对比数值试验。结果表明:高原地区低层加热异常时,各层最大环流异常中心偏向热源异常中心西侧;高原高层加热异常时,最大环流异常中心偏向热源异常中心东侧。西太平洋地区高、低层加热异常都使最强环流异常中心偏于热源异常区北侧15~20个纬距处。两地区上空不同层次加热异常对南亚高压和西太平洋副高的影响都有显著的差异。
中文关键词:热源异常  环流异常  定常态三维谱模式  数值试验
 
EFFECTS ON STATIONARY WAVES OF ANOMALOUS HEAT SOURCES AT HIGH/LOW LEVELS OVER TIBETAN HIGHLAND AND WESTERN PACIFIC
Abstract:For comparison,numerical simulations are conducted of influence on stationary waves of anomalous heat sources at high/low levels over the Tibetan plateau and western Pacific in terms of a 3D steady primitive equation spectral model.Results show that with low(high)level heating anomaly available in the highland,the maximal circulation anomaly centers shift to the anomaly centers for all levels whilst the high/low level heating anomalies over the western Pacific make the maximal circulation anomaly centers 10~20 deg of latitude northward of the heating anomalies.The high/low level heating anomalies under study have greatly differing effects on south Asian highs and western Pacific subtropical highs.
keywords:heating anomaly  circulation anomaly  3D steady spectral model  numerical simulation
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