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渤海冬季海冰气候变异的成因分析

海洋学报 2004年第2期26卷 11-19页

作者：刘钦政黄嘉佑白珊吴辉碇国家海洋环境预报研究中心北京100081 北京大学物理学院大气科学系北京100871

选取渤海冰情等级资料和大气环流74个指数逐月资料,分别建立不同尺度(年、半年、季和月)的累积值变量作为因子,研究该地区冰情年代际变化及冰情的气候成因,结果发现以1972.为分界把1932.2.00年时期冰情的变化分为两个时段,前一时段为... 详细信息

选取渤海冰情等级资料和大气环流74个指数逐月资料,分别建立不同尺度(年、半年、季和月)的累积值变量作为因子,研究该地区冰情年代际变化及冰情的气候成因,结果发现以1972.为分界把1932.2.00年时期冰情的变化分为两个时段,前一时段为重冰情多发阶段,1972.以后转为轻冰情时段.影响渤海海冰冰情变化主要因子是太平洋副高.

关键词：海冰气候变异渤海大气环流太平洋副高信噪比分析突变分析

PROPAGATION OF LONG-LIVED ANTICYCLONIC ROSSBY EDDIES OVER AN ISOLATED TOPOGRAPHY AND THEIR MERGING

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Journal of Hydrodynamics 2001年第3期13卷 34-45页

作者： Luo, De-Hai Lu, Yan Ocean Univ. of Qingdao Qingdao 266003 China

In a barotropic model the propagation of long-lived anticyclonic Gaussian eddies larger than the radius of deformation over a Gaussian-shaped topography and the merging of the two anticyclonic eddies are investigated by solving the generalized Flierl-Yamagata equation. It is shown that whether or not the basic flow is present, the isolated topography seems to encourage the amplification of an anticyclonic eddy and its southwest movement around the hill In the absence of both the westward flow and the topography, two anticyclonic eddies of identical sizes and amplitudes can merge. However, either the including of the topography or the westward basic flow can make them not merge. In the presence of both, the eddies can merge, but this merging depends on whether the parameter condition is appropriate or not. Therefore, it can be concluded that the topographic forcing might be a possible mechanism for the merging of two anticyclonic eddies.

关键词： Amplification Equations of motion Merging Surface topography Two dimensional

Propagation of planetary-scale zonal mean wind anomalies and polar oscillations

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Science Bulletin 2012年第20期 2619-2627页

作者： QIAN WeiHong & LIANG HaoYuan department of atmospheric and Oceanic {2.,School of Physics,Peking university,Beijing 100871,China

Global atmospheric variables can be physically decomposed into four components:(1) the zonal time averaged climate symmetric component,(2. the time averaged climate asymmetric,(3) the zonal-mean transient symmetric anomaly,and (4) the transient asymmetric *** study analyzes the relationships between the intra-seasonal and inter-annual variability of planetary scale decomposed zonal and meridional winds in the tropopause,and oscillations such as those from the El Ni o-Southern Oscillation (ENSO),the Arctic Oscillation (AO) and the Antarctic Oscillation (AAO).The tropical inter-annual zonal mean wind anomalies in the tropopause are linked with the ENSO cycle and can propagate into the subtropics,mid-latitudes,and polar front regions via abnormal meridional vertical ***,tropical intra-seasonal (40-60-d) zonal wind anomalies can reach the subtropics and *** polar intra-seasonal zonal wind anomalies in the tropopause can propagate toward high-latitude ***,the AO and the AAO are the result of the interaction and propagation of these planetary scale zonal wind anomalies.

关键词： physical decomposition El Ni o-Southern Oscillation Arctic Oscillation Antarctic Oscillation planetary scale intraseasonal oscillations

Intensified Hadley Circulation and Increasing Outgoing Long-wave Radiation

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Intensified Hadley Circulation and Increasing Outgoing Long-...

Lithium isotopic composition of subduction-related leucogranites and associated rocks from the northern margin of the North China craton:Source tracking and tectonic implications

第六次全国动力气象学术会议

作者： Yongyun Hu department of atmospheric {2., School of Physics, Peking university Beijing, 100871

It is known that the Hadley cell is a thermally driven direct circulation,consisting of a rising of warm and moist air in the equatorial region and a descent ofcolder air in the subtropics,and that the Hadley cell tra...

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Lithium isotopic composition of subduction-related leucogran...

中国矿物岩石地球化学学会第13届学术年会

作者： XIAO Yi-lin~1,XU Li-jun~1,GAO Yong-jun~2.LI Shu-guang~1, SUN He~1,GU Hai-ou~1 1.CAS Key Laboratory of Crust-Mantle Materials and Environments,School of Earth and Space sciences,university of Science and Technology of China,Hefei,2.002. 2.{2. of Earth and atmospheric sciences,university of Houston,Houston,TX 772.4,USA

We report Li elemental and isotopic data for a suite of(leuco-) granitic and gneissic rocks(presumed protolith of the leucogranite) from the boundary between the North China craton(NCC) and the South China plate (SCP),which represent an important repository for understanding the Mesozoic thicken and thinning processes of the *** concentrations and isotopic compositions of leucogranites from the Bangbu area in the southern margin of the NCC show the following important characteristics:i) most samples(15 out of 19) have much lower Li concentrations but higherδ Li values compared to normal granite;ii) some samples have very low Li concentrations(around 1 ppm) but extremely heavy isotopic compositions(from 8.6 to 16.1),representing the heaviest Li isotopic compositions so far reported for granitic rocks;iii) lithium isotopic compositions of 11

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西固工业区光化学烟雾的数值模拟

高原气象 1989年第3期8卷 241-251页

作者：余金香邱崇践陈长和黄建国兰州大学大气科学系

本文给出了一个半拉格朗日形式的大气扩散模式。模式除考虑污染物在大气中的输送、弥散过程外,还加入了光化学反应过程。我们用此模式计算了1983年8月中旬兰州市西固地区的光化学烟雾浓度。计算结果和监测资料的对比表明,模式对这一地区... 详细信息

本文给出了一个半拉格朗日形式的大气扩散模式。模式除考虑污染物在大气中的输送、弥散过程外,还加入了光化学反应过程。我们用此模式计算了1983年8月中旬兰州市西固地区的光化学烟雾浓度。计算结果和监测资料的对比表明,模式对这一地区O_3最大浓度值有较好的模拟能力,对O_3浓度的日变化及地理分布也有一定的模拟能力。

关键词：光化学污染数值模拟大气质量模式

SIMULATION OF THE SPATIAL DISTRIBUTION OF CLIMATIC ELEMENTS IN MOUNTAINOUS REGIONS

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Acta meteorologica Sinica 1989年第5期3卷 669-676页

作者：傅抱璞 department of atmospheric {2. Nanjing UniversityNanjing

In this paper,an effective method of simulating the spatial distribution of climatic elements in mountainous areas by using the semi-empirical theory is *** an example,the spatial distributions of temperature, vapor pressure,relative humidity,wind speed and precipitation in the Jianyang region and the Shaxi basin of Fujian Province are computed with this method,and the simulated results are in good agreement with the observations.

关键词： SIMULATION OF THE SPATIAL DISTRIBUTION OF CLIMATIC ELEMENTS IN MOUNTAINOUS REGIONS

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关于非均匀介质中波的传播问题

气象学报 1989年第1期47卷 1-7页

作者：伍荣生南京大学大气科学系

本文中,对Lighthill等人有关非均匀介质中波动性质的研究进行了分析。在接近平面波的近似情况,位相并不满足他们提出的连续性原理,而频率随时间的变化成为位相变化的外源。同时沿群速线方向,波数总是守恒的,无论介质均匀与否,但频率在... 详细信息

本文中,对Lighthill等人有关非均匀介质中波动性质的研究进行了分析。在接近平面波的近似情况,位相并不满足他们提出的连续性原理,而频率随时间的变化成为位相变化的外源。同时沿群速线方向,波数总是守恒的,无论介质均匀与否,但频率在群速方向上总是改变的。这些结果和Lighthill等人的结果是有所差异的。在本文中,除给出了具体的表达式外,并对引起差异的原因作了分析,认为本文结果较为合理。

关键词：非均匀介质波传播气流

ENERGY,ENERGY FLUX AND LAGRANGIAN OF ROSSBY WAVE

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Acta meteorologica Sinica 1987年第2期2卷 143-150页

作者：伍荣生 department of atmospheric {2. Nanjing University

The energy flux derived from the barotropic vorticity equation differs from that obtained directly from the momentum *** re-study this problem raised in the early *** results show that if the momentum equation is rewritten in such a way that it contains the same conditions as that for the baro- tropic vorticity equation,then the same form of average energy flux can be obtained for the waves with constant *** this new momentum equation,the potential energy of Rossby wave is derived and Lagrangian of nonlinear barotropic vorticity equation can be approximately found with this potential *** provides a physical basis for studying the dynamics of nonlinear Rossby wave with the approach of calculus of variation.

关键词： ENERGY ENERGY FLUX AND LAGRANGIAN OF ROSSBY WAVE