FEATURES AND COMPARISONS OF THE QUASI-BIENNIAL VARIATIONS IN THE ASIA-PACIFIC MONSOON SUBSYSTEMS

来源 :热带气象学报 | 被引量 : 0次 | 上传用户:tingxin1
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
The National Centers for Environmental Prediction (NCEP) reanalysis data Climate Diagnostics Center Merged Analysis of Precipitation (CMAP) results,and NOAA Extended Reconstructed Sea Surface Temperature (SST),have been utilized in this paper to study the quasi-biennial variations in Asia-Pacific monsoon subsystems and associated SST anomalies (SSTA) and wind anomalies. Four monsoon indices are computed fi,om NCEP/National Center for Atmospheric Research (NCAR) reanalysis to represent the South Asian monsoon (SAM),South China Sea summer monsoon (SCSSM),Western North Pacific monsoon (WNPM) and East Asian monsoon (EAM),respectively. The quasi-biennial periods are very significant in Asia-Pacific monsoons (as discovered by power spectrum analysis),and for SAM and EAM---with moderate effects by EI Ni(n)o-Southern Oscillation (ENSO)---the quasi-biennial periods are the most important factor. For SCSSM and WNPM (once again due to the effects of ENSO),the quasi-biennial periods are of secondary durations. There are obvious interdecadal variations in the quasi-biennial modes of the Asia-Pacific monsoon,so in the negative phase the biennial modes will not be significant or outstanding. The wind anomalies and SSTA associated with the biennial modes are very different in the SAM. WNPM and EAM regions. Since the WNPM and SCSSM are very similar in the biennial modes,they can be combined into one subsystem,called SCS/WNPM.
其他文献
团山背金矿区位于湖南省醴陵市,区内发育与金矿化有关的存在破碎带、蚀变带、金矿脉等多条,通过研究该区的地质、物化探工作成果,建立本区地球化学、地球物理综合找矿模式,寻
聚类分析是研究样本(或变量)分类的一种多元统计方法,通过分析各样本或变量间的相似性逐步归类.本文以古龙油田为例,运用了聚类分析中的Q型分层聚类法,研究了古龙油田葡萄花
提出了一种研究湿法腐蚀进程的新方法———红外热像法。在湿法腐蚀中,金属或半导体基片浸泡在化学试剂中,由于化学能的作用,会在溶剂中产生热能,从而发出红外辐射,利用红外
建立三维水热耦合数值模拟模型,对不同地下水天然流动情况下,含水层采能过程中及采能后地温场的演化进行了模拟和分析。结果表明,对于地下水流动较为显著的地区,地温场的变化
The results of quantitative characters for anatomy in stems of three varieties tomatoes seedlings showed that the cell population between vascular bundle and ep
复杂断块具有构造复杂、储层横向变化大、油水关系复杂等地质特征,勘探开发难度较大.测井解释标准是依据当时技术条件下试油结论与测井参数对比确定的.随着油田开发的不断深
着陆是载人航天活动的关键环节,对返回舱在接近地面时的带伞着陆过程分析具有重要意义。该文对显式积分有限元软件LS-DYNA的ALE方法进行了初步研究,探讨了其中关键控制参数对
本文分析了农村妇女参与全民创业的制约因素,提出促进农村妇女参与全民创业的对策建议:1、创新理念;2、加大技能培训;3、启动多方资金支持与服务;4、优化创业环境;5、改善生
本文基于Lucas的内生增长理论,将二氧化碳排放和能源消费强度等环境因素纳入到内生增长模型,并考虑消费者的环境警惕意识对效用函数的影响,运用动态优化模型和比较静态方法进行
本文针对一些地区个别层位的油气水性质的判别上仍经常出现失误,分析了油气聚集成藏后,如果地质运动使盖层封盖性能变差,油气藏就会被破坏,轻质组分大量散失,地层水潜入,重组