COMBINATION OF ECMWF REANALYZED DAILY RAINFALL AND PENTAD CMAP IN CHINA     

崔茂常  朱海 《中国海洋湖沼学报》2001,19(3):200-207

In this study, 16 combinations of the ECMWF (European Centre for Medium-Range Weather Forecast) reanalyzed daily rainfall and the pentad CMAP in China for the period 1980- 1993( 1May - 31 Dec. ) were calculated. Correlation analysis was used to roughly evaluate daily rainfall for the whole of China and a combination of RPC (rotated principal component) and wavelet analyses was applied to data on observed and combined daily rainfall to obtain a detailed evaluation of the quality of these combined datasets in 6 selected major rainfall regions of eastern China. The results showed that except for intraweekly fluctuation, the best combination was roughly similar to or accorded well with observation in the aspects of space variation patterns and long period rainfall fluctuations related to monsoon onset and serious meteorologic disasters, indicating that this combination yielded better values of long term daily mean and standard deviation through the pentad CMAP ( CPC Merged Analysis of Precipitation), and can also represent rainfall fluctuations through the reanalyzed daily rainfall.  相似文献   

Using ring width on sagittal plane of otolith to reveal the growth of antarctica fish species: A case study of Electrona antarctica          下载免费PDF全文

Wei Lian  Zhu Guoping  Duan Mi 《极地研究》1988,31(2):134

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An interior solution of the vector graviton gauge field     

Song Guo-xuan  Yan Hao-jian  Xu Tong-qi  Zhu Shi-chang 《Chinese Astronomy and Astrophysics》1981,5(3):332-336

We have found an interior solution of the Einstein equation containing a vector graviton field under a special mass distribution.  相似文献   

Bioclimatology of frost (Advances in Bioclimatology,Vol. 2)     

Zhu Rui-Zhao 《Boundary-Layer Meteorology》1994,68(3):329-330

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中国科学院地理研究工作方向和任务的初步设想(在1965年中国科学院地理工作会议上的报告)   总被引：2，自引：1，他引：1  

竺可桢 《地理研究》1984,3(1):1-7

竺可桢同志1965年在中国科学院地理工作会议上所作的报告,全面分析了我国地理工作的现状和任务,阐明了分工和实现这些任务的措施。竺可桢同志的报告虽然已经过去了近二十年,但现在看起来,仍然有很大的指导意义,本刊特予以刊登,供大家学习参考。虽然报告中有些提法是针对当时情况的,地理研究机构和名称也有调整和变动,但为了保持这个历史性文件的完整,本刊未加更动。  相似文献   

    

Lu Keli  Zhu Yongchun 《大气科学进展》1994,11(4):427-435

The wave rays and their seasonal variation of stationary and low-frequency Rossby waves are studied by using the Runge—Kutta scheme. The results show that for stationary waves the rays can reach lower latitudes in winter, and are limited in higher latitudes in summer. The main differences between the stationary and low-frequency wave rays are that low—frequency waves can propagate across the equator and the easterlies will not be an obstacle on their propagation. It explained to some extent the interaction of disturbances between the Northern and Southern Hemispheres. The lower wave frequencies and the stronger easterly flow are, the more difficult low—frequency waves will be to propagate across the equator. The waves with 20-day period are easier to propagate across the equator than that with 50—day period. The winter is the most favorable season for low—frequency waves to propagate into another hemisphere.  相似文献   

On the formation of void in the Universe     

Shi-Chang Zhu  Guo-Xuan Song 《Astrophysics and Space Science》1983,95(1):197-204

This paper deals with the void with a volume of ～10⁶ Mpc in the Universe. By using spherically-symmetric Einstein field equations the dynamics of void is studied. It seems to be possible that the void will decay in the radiation-dominated era so that the void will amplify and form in the matter-dominated era only.  相似文献   

Toxic effects of Zn2+, Cu2+, Cd2+ and NH3 on Chinese prawn     

Zang Weiling  Xu Xuancheng  Dai Xilin  Zhu Zhengguo  Xu Guirong  Xu Renguo 《中国海洋湖沼学报》1993,11(3):254-259

This study deals with the toxic effects of Zn²⁺, Cu²⁺, Cd²⁺ and NH₃ on Chinese prawn (Penaeus orientalis). The median lethal concentrations of the toxic matters on Chinese prawn were determined. Cd²⁺>Cu²⁺>Zn²⁺>NH₃-Nm is the toxic order of these chemicals to Chinese prawn. The toxic order of concentrated Zn²⁺ and Cd²⁺ in tissues and organs of Chinese prawn is in the order. gill>shell+appendage>viscera>muscle.  相似文献   

依巴谷参考架惯性特征     

朱紫 《天文学进展》2001,19(2):302-306

通过分析和比较依巴谷自行系统与FK2．0自行系统之间的关系，研究了依巴谷系统的惯性问题，指出该系统可能然存在较大的非惯性剩余旋转。  相似文献   

巴颜喀拉山地区第四纪冰期初步探讨     

朱建立 《青海国土经略》1992,(2)

依据地貌、孢粉、岩性沉积特征,划分巴颜喀拉山地区第四纪冰期。并与珠穆朗玛峰、唐古拉山、昆仑山地区进行对比。确定巴颜喀拉山地区第四纪以来有:哈拉滩冰期;巴颜喀拉山冰期;洛曲冰期;汪藏因姆措冰期;折尕考钦新冰期。  相似文献