高原牧区雪灾的数值模拟

使用中科院的LASGη模式对1991年4月16-23日的高原牧区雪灾过程进行了降水模拟和成因分析,揭示了造成这次雪灾天气的主要原因,首次证实了该模式对雪灾天气有一定的预报能力.     

高原牧区雪灾的数值模拟

使用中科院的ＬＡＳＧη模式对１９９１年４月１６－２３日的高原牧区雪灾过程进行了降水模拟和成因分析,揭示了造成这次雪灾天气的主要原因,首次证实了该模式对雪灾天气有一定的预报能力。     

准噶尔盆地西南缘霜冻灾害的特征分析

兵团农七师春、秋季气温变化很不稳定,秋霜冻往往过早来临,春霜冻也常常结束较晚,致使历年均有不同程度的霜冻害发生。本文利用该区域霜冻灾害的特征资料进行分析,并提出防御霜冻的措施。     

2004年黔西南州"6.4"暴雨中尺度形成条件分析

对造成黔西南州暴雨的主要天气系统、物理量场资料、卫星云图和雷达回波强度进行了初步分析,并着重讨论了各种因素相互影响的作用,为此次暴雨预报提供了一些有意义的参考。     

长白山积雪酸度初步研究

本文通过1985年12月对长白山积雪的考察资料,分析了针阔叶混交林带、山地晴针叶林带,山地岳桦林带和高山苔原带积雪的pH值、电导率和雪水化学组分的差异,积雪酸度呈弱酸性,局地大气污染物对雪水影响较小。     

An analysis on the physical process of the influence of AO on ENSO

The influence of the spring AO on ENSO has been demonstrated in several recent studies. This analysis further explores the physical process of the influence of AO on ENSO using the NCEP/NCAR reanalysis data over the period 1958–2010. We focus on the formation of the westerly wind burst in the tropical western Pacific, and examine the evolution and formation of the atmospheric circulation, atmospheric heating, and SST anomalies in association with the spring AO variability. The spring AO variability is found to be independent from the East Asian winter monsoon activity. The spring AO associated circulation anomalies are supported by the interaction between synoptic-scale eddies and the mean-flow and its associated vorticity transportation. Surface wind changes may affect surface heat fluxes and the oceanic heat transport, resulting in the SST change. The AO associated warming in the equatorial SSTs results primarily from the ocean heat transport in the face of net surface heat flux damping. The tropical SST warming is accompanied by anomalous atmospheric heating in the subtropical north and south Pacific, which sustains the anomalous westerly wind in the equatorial western Pacific through a Gill-like atmospheric response from spring to summer. The anomalous westerly excites an eastward propagating and downwelling equatorial Kelvin wave, leading to SST warming in the tropical central-eastern Pacific in summer-fall. The tropical SST, atmospheric heating, and atmospheric circulation anomalies sustain and develop through the Bjerknes feedback mechanism, which eventually result in an El Niño-like warming in the tropical eastern Pacific in winter.     

西太平洋副热带高压对热带 海温异常响应的研究

利用多年的观测资料,研究了西太平洋副热带高压对热带海温异常的响应及其相互作用过程。着重研究冬、夏季西太平洋副高对同期及前期不同海域（特别是赤道东、西太平洋以及印度洋海域）海温异常的响应;用SVD方法分析了夏季副热带高压与前冬、前春及同期各月全球海温的最佳耦合模态。在对比研究西太平洋副热带高压异常时其垂直环流变化的基础上,进而研究海气相互作用对副热带高压影响的物理过程。