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Using the adjoint operator of PW, nine sites'PWs are successfully assimilated into the initial condition and altered the initial temperature, water vapor and wind field. The change varies with variable fields and pressure levels.

本文利用开发的用于同化可降水量和天顶延迟的模式,成功地将9个站点的大气可降水量的分布及变化信息同化到初始场中,从而使初始场在湿度场、温度场和风场方面较同化前得到改变,这种改变在不同变量场、各个层次上变化的大小和形势是不相同的。

Experimental evidences on ideal and real data show that different weighting and scaling have different influence on the adjoint assimilation system,and the system has good ability of assimilation and the adjoint code method is a very effective tool.

通过理想场和实际资料进行的试验发现:权重系数和尺度因子选取的不同会对伴随模式同化系统产生不同的影响。试验表明伴随模式系统有较强的同化能力,对提高预报效果有积极的作用,用伴随码推导伴随模式是很有价值的工具。

Furthermore data assimilation experiments are conducted with MM5 Adjoint-model Assimilation System made by adjoint codes. With a case of heavy rainfall taking place from 00h July 23 to 00h July 24,2002, several numerical simulation experiments of different schemes are performed. The results are as follows. MM5 Adjoint-model Assimilation System not only can improve the initial field effectively and promote the coordination with the model but also can enhance the forecast on the precipitation and other elements. The assimilation of CDW has an improvement on quality of upper wind. The effect of direct numerical simulation with utilizing the CDW to amend the initial field gains the advantage over the one not.

结果表明,MM5伴随模式同化系统能有效改善初始场与模式的协调能力,提高模式对于降水场和其它要素场的预报;使用云导风资料修正初始场后直接模拟的效果比未使用时直接模拟的效果要好,对部分区域的强降水预报精度有一定程度的改善;使用伴随模式同化系统后,加入云导风资料的同化试验对其它要素的改善与直接同化常规资料的效果相比,改善优势不明显,但从各要素的误差来看,对于风场的改善最好。

The results of numerical experiments, using the four-dimensional variational data assimilation system of the nonhydrostatic mesoscale model MM5, show that: the tangent linear model and adjoint model conducted by keeping the "on-off" switches the same as the basic state, can provide a good approximation of the first-order information to the NLM perturbation and a good descent direction for the minimization procedure; switching on and off at every other time step in the Kuo cumulus parameterization scheme don"t impact the convergence rate of cost function; the existence of the switches don"t impact improvement to the MM5 model rainfall prediction because that not only specific humidity ,but also wind, temperature and pressure are assimilated into the model.

非静力中尺度数值模式MM5的四维变分资料同化系统进行的数值试验结果表明:"开关"变量保持与基态一致,所构造的切向线性模式能够提供关于非线性模式扰动的一阶近似,伴随模式所计算的梯度值能够为最小化过程提供较好的下降方向;郭氏降水参数化方案中对流每隔一个积分步的交替发生并不影响目标函数最小化的收敛速度;"开关"变量的存在也不影响将风、温度、气压和比湿结合起来同化对MM5降水预报准确性的提高。

Ladies and Gentlemen, Today's world is an open, multi-polarization and with common economic interests world. No country can exist in isolation, the common economic interests, let the fate of the world be tightly together. When last year's U.S. sub-loan financial crisis began, this crisis soon spread to all countries in the world, no country has been able to shake off the impact of financial crisis . This sounds the alarm that if the world want to develop, Asia want to develop, we must take the path of global integration together.And the world's financial system must establish a more transparent and global open joint coordination mechanism.

女士们、先生们,当今的世界是开放的、多极化、经济利益共同化的世界,任何一个国家都不能孤立的存在,经济利益的共同化,把世界各国的命运紧紧地联系在一起,从去年美国的资贷金融风暴开始,很快这种危机就波及到世界各国,没有任何一个国家能够摆脱金融危机的影响,这就更进一步向世界各国发出了长期的警钟,世界要发展,亚洲要发展,就必须联合起来走全球经济一体化的道路,世界各国的金融系统也必须建立一个全球性的更加透明联合协调的开放机制。

Considerable differences were found to be present among silkworm races with different voltinism and between the stock seed and the hybrid silkworm egg of the same race in their diapause characters and tolerance to cold storage.

不同化性的蚕品种之间以及同品种的原种和杂交种之间其滞育性及耐冷藏能力有较大的差异,一般来说,含多化性血缘蚕品种的滞育性低于二化性,二化性低于一化性,原种和原原种的耐冷藏能力低于杂交种,在作长期保存时应分别处理。

This is not only a little part of my life story but a small mirror of society or education system. By mirroring these labeled classification rules in society and the process of separation and assimilation in education system, I resist to be assimilated into so-called mainstream value and to correspond to the label of non-mainstream value. I am trying to do myself in two way classification.

这是我生命里的一小段故事,却也是社会的一面小镜子,映照出社会粗浅化约的标签归类规则,映照出教育体制切割与同化的过程,我抗拒被同化与归顺所谓的「主流」价值,也不想符应「非主流」的标签,而能在二分法之外,走出自己的路。

But insisting on creedal rather than cultural assimilation at least gives them a chance, which they certainly need.

可是强调信条同化,而不是文化同化,至少给这些新移民一个机会,一个他们无疑亟需的机会。

It has been suggested that the genotypical difference of 14C assimilation and its regulation should be considered in the practice of wheat management.

开花期增施氮素能继续提高莱州953的CO2同化能力,但不能有效地增加鲁麦14CO2同化能力。14C同化及其调节特征的品种间差异,应在栽培措施上有所考虑。

the development period of over-wintering larvae of three voltinisms asian corn borer in langfang,hengshui,fuxin,gongzhuling,shuangyashan,haerbin from resuscitation to pupation was studied. the results showed that the development period was different among the different voltinism groups,and it was same within the same voltinism groups.

通过对廊坊、衡水、阜新、公主岭、双鸭山和哈尔滨6个地区3种化性的玉米螟越冬幼虫复苏后发育至化蛹历期的研究,得出3种不同化性种群间的玉米螟幼虫复苏后发育至化蛹的历期有明显差异,而相同化性种群间的玉米螟幼虫复苏后发育至化蛹的历期无明显差异。

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