In recent years ,jewelry industry in China is rapidly developing,which enriches the domestic market increases export as well,However,due to reasons such as policy system and market ,there are still many aspects to be ...In recent years ,jewelry industry in China is rapidly developing,which enriches the domestic market increases export as well,However,due to reasons such as policy system and market ,there are still many aspects to be completed and improved At present,China’s gold market will be gradually opened up ,In particular,when the negotiation of WTO membership of China has made great breakthrough ,it becomes a key issue how to deal with the relationship between taking over the domestic market and developing the international market,and etc. From a macro point of view,the author dicussed the relationships to be treated by the China’s jewelry industry in order to improve the market and operation of the gold jewelry industry in China,and compete against world jewelry enterprises ,This is a special recommendation for our readers to share its展开更多
基于WRF模式构建了Hybrid En SRF-En3DVar同化系统,该系统使用En SRF方案直接更新集合扰动。利用构建的同化系统针对台风"桑美"分别进行集合协方差权重敏感性试验和同化雷达不同观测资料的敏感性试验。集合协方差权重敏感性...基于WRF模式构建了Hybrid En SRF-En3DVar同化系统,该系统使用En SRF方案直接更新集合扰动。利用构建的同化系统针对台风"桑美"分别进行集合协方差权重敏感性试验和同化雷达不同观测资料的敏感性试验。集合协方差权重敏感性试验发现:当集合协方差权重分别为0.25、0.5和0.75时,同化效果优于3DVar试验,其中0.75的集合协方差权重试验得到了分析场的最优估计;当集合协方差权重为1.0时,分析场最差。同化雷达不同观测资料的敏感性试验表明,联合同化雷达径向风及反射率能有效改善大气湿度场和风场,但对风场的改善效果不如仅同化雷达径向风好。将En SRF集合扰动更新方案与扰动观测方案综合分析发现,扰动观测方案集合离散度较小,计算代价大,En SRF方案优于扰动观测方案。展开更多
文摘In recent years ,jewelry industry in China is rapidly developing,which enriches the domestic market increases export as well,However,due to reasons such as policy system and market ,there are still many aspects to be completed and improved At present,China’s gold market will be gradually opened up ,In particular,when the negotiation of WTO membership of China has made great breakthrough ,it becomes a key issue how to deal with the relationship between taking over the domestic market and developing the international market,and etc. From a macro point of view,the author dicussed the relationships to be treated by the China’s jewelry industry in order to improve the market and operation of the gold jewelry industry in China,and compete against world jewelry enterprises ,This is a special recommendation for our readers to share its
