【摘 要】
：
Evaporation plays an important role in water balance on the land surface.In North China, the evaporation series of the recent 115 years was reconstructed on the
【机 构】
：
College of Water Resources and Environment,Hohai University,Nanjing 210098,China;Tianjin Institute o
论文部分内容阅读
Evaporation plays an important role in water balance on the land surface.In North China, the evaporation series of the recent 115 years was reconstructed on the basis of Ththwaite evaporation formula.The characteristics of the reconstructed series were analyzed using 10-year running mean filter, power spectrum method, and running t-text of abrupt changes on the paper.The results showed that there were remarkable interannual fluctuations with timescales of about quasi-8-year, 3-4-year, and quasi-2-year, and interdecadal oscillations with timescales of 57.5-year, quasi-23-year, and 11.5-year.Meanwhile, the abrupt changes of the evaporation series were also of interdecadal timescale.Either interannual fluctuations or interdecadal oscillations of evaporation were closely related to variations in air temperatures and precipitation.
其他文献
A two-phase mixture model based on the solution for the Navier-Stokes equations has been utilized in calculating the hydrodynamic characteristics of cavitating
类风湿关节炎（以下简称RA）是一种累及周围关节为主的多系统炎症性自身免疫病。患者症状以关节疼痛、僵硬和畸形为主、可累及多脏器，严重影响患者的工作和生活，给患者带来严重身心
The risk analysis of urban rainstorm water logging facing Tianjin city by using methods of probability, investigation and numerical simulation was carried out i
40岁左右的妇女，随着卵巢功能的退化，雌激素水平逐渐降低，开始进入了更年期，引起体内一系列平衡失调，使人的神经系统功能与精神状况稳定性减弱，对各项精神因素如躯体疾患非常敏感，以
一rn曾听人戏谑:到北京才知道自己的官小,到温州才知道自己的财商不高,而到了这滨海小城,才知道自己拜的鬼神太少.rn不错的,小城本土文化中极其夺目的一个部位就是这源乎信仰
Nowadays, the nested grid model is widely used to increase the resolution of numerical model.An attempt to investigate the influence of the newly developed nest
Background:Healthcare-associated pneumonia (HCAP) is associated with drug-resistant pathogens and high mortality,and there is no clear evidence that this is due
为探讨线粒体(mt)DNA4977bp大片段缺失和肿瘤间的相关性,我们检测了mt DNA4977bp大片段缺失在肺癌组织、癌旁正常组织及非癌患者肺组织的分布频率,并分析了缺失与患者年龄、