大气物理参数对漓江水位的影响分析与预测

大气物理参数是影响漓江的水位变化的主要因素,对2000～2006年连续各月桂林市的大气温度、大气相对湿度、降水量、日照时数等大气物理参数和桂林水文站漓江水位数据,使用相关分析法分析大气物理参数对漓江水位变化的影响程度,并应用径向基人工神经网络由大气物理参数对漓江水位变化进行预测。结果表明,造成漓江水位变化的最重要大气物理参数是降水量,次之为大气温度;正常气象情况下,根据降水量和大气温度利用径向基神经网络可较为准确地预测漓江年最低水位和年最高水位,预测最低水位的误差小于5%,预测最高水位的误差略大于5%,预测最低水位比最高水位更准确,可为漓江流域可能发生的旱情、洪水等问题提供科学的决策数据。     

欢迎订阅2020年《大学物理》

正《大学物理》是中国物理学会主办的、以高校物理教学研究为主要内容的学术性刊物,《大学物理》的办刊宗旨是:紧密结合我国高等院校物理教学实践,开展学术交流,报导物理教学研究成果,介绍物理学在技术领域和交叉学科的应用及物理学前沿进展,以提高我国高校物理教学质量和教学研究水平.主要栏目有教学研究、教学讨论、物理实验、教学改革、基础物理教学现代化问题、物理教育与科学素质培养、前沿综述、专论、物理学史、     

中国现场统计研究会气象、水文、地质统计专业委员会计算物理计算大气物理专业委员会2004年学术年会会议纪要

2005年1月25～26日，由中国现场统计研究会气象、水文、地质统计专业委员会暨计算物理学会计算大气物理专业委员会、中国气象科学研究院及国家气候中心、国家气象中心共同召开的2004年度中国现场统计研究会气象、水文、地质统计专业委员会、计算物理学会计算大气物理专业委员会两专业委员会学术论坛在北京召开。     

献身祖国核科技事业的一代先驱——纪念王淦昌先生诞辰100周年

王淦昌先生是我国著名核物理学家、中国科学院资深院士、“两弹一星”功勋奖章获得者、我国实验原子核物理、宇宙射线及粒子物理研究的主要奠基人和开拓者，享有国际盛誉。在70年科研生涯中，他始终活跃在科学前沿，孜孜以求、奋力攀登，取得了多项令世界瞩目的科学成就。     

大气电场及其对植物和农业的影响

介绍了大气电场的物理参数及其形成的物理机制,讨论了大气电场对植物和农业的影响.     

计算物理学会计算大气物理专业委员会暨中国现场统计研究会气象、水文、地质统计专业委员会会议纪要

2006年4月20~24日,由计算物理学会计算大气物理专业委员会暨中国现场统计研究会气象、水文、地质统计专业委员会、中国气象科学研究院及湖北省宜昌市气象局共同召开的2005年度计算物理学会计算大气物理专业委员会、中国现场统计研究会气象、水文、地质统计专业委员会两专业委员会学术论坛在湖北宜昌召开.参加会议的有:中国气象科学研究院、计算物理学会、北京工业大学应用数学研究所、北京应用物理与计算数学研究所、内蒙古自治区气象局、湖北省气象局、湖北省宜昌市气象局、中科院大气物理研究所、上海市气象局、浙江省气象局、南京信息工…     

欢迎订阅2012年《大学物理》

《大学物理》是中国物理学会主办的、以高校物理教学研究为主要内容的学术性刊物,连续多年被评为中文核心期刊.《大学物理》的办刊宗旨是:紧密结合我国高等院校物理教学实践,开展学术交流,报导研究成果,介绍物理学在技术领域和交叉学科的应用及物理学前沿进展,以提高我国高校物理教学质量和教学研究     

欢迎订阅2015《大学物理》

正《大学物理》是中国物理学会主办的、以高校物理教学研究为主要内容的学术性刊物,连续多年被评为中文核心期刊,《大学物理》的办刊宗旨是:紧密结合我国高等院校物理教学实践,开展学术交流,报导物理教学研究成果,介绍物理学在技术领域和交叉学科的应用及物理学前沿发展,以提高我国高校物理教学质量和教学研究水平,主要栏目有教学研究、教学讨论、物理实验、教学改革、基础物理教学现代化问题、物理教育     

她用物理的情趣,引我们科苑揽胜;她用知识的力量,助我们奋起攀登!——《现代物理知识》简介

《现代物理知识》创刊于1989年元月,是我国物理学界一份难得的优秀科普杂志。该刊主要介绍现代物理知识、物理学前沿的最新成果与发展动态、与物理学有关的交叉学科发展的     

欢迎订阅2015《大学物理》

正《大学物理》是中国物理学会主办的、以高校物理教学研究为主要内容的学术性刊物,连续多年被评为中文核心期刊.《大学物理》的办刊宗旨是:紧密结合我国高等院校物理教学实践,开展学术交流,报导物理教学研究成果,介绍物理学在技术领域和交叉学科的应用及物理学前沿发展,以提高我国高校物理教学质量和教学研究水平,主要栏目有教学研究、教学讨论、物理实验、教学改革、基础物理教学现代化问题、物理教育     

Electric field and Lorentz force contribution to atmospheric vortex phenomena

The physics that initiate and sustain tornados and dust devils is still under investigation. Forces that operate throughout a wide range of scales and could contribute to atmospheric vortex phenomena are the Lorentz force and the force of electric fields. The Lorentz force results in a circular motion of charged particles in a magnetic field. An electric field will pull or repel a charged particle in the direction of the field. This paper will demonstrate that the Lorentz force and the force of electric fields, acting on charged particles that exist in atmospheric vortex phenomena, plausibly contribute to the set of physics that will explain tornados and other atmospheric vortex phenomena.     

Asymptotic solving method for a seaben air oscillator model of atmospheric physics

In this paper, a class of coupled system for the El Ni no/La Ni na southern oscillation (ENSO) atmospheric physics oscillation model is considered. We propose an ENSO atmospheric physics model using a method from the asymptotic theory. It is indicated from the results that the asymptotic method can be used for analyzing the sea surface temperature anomaly and the thermocline depth anomaly of the atmosphere-ocean oscillation for the ENSO model in the equatorial Pacific.     

The physics of lightning

Despite being one of the most familiar and widely recognized natural phenomena, lightning remains relatively poorly understood. Even the most basic questions of how lightning is initiated inside thunderclouds and how it then propagates for many tens of kilometers have only begun to be addressed. In the past, progress was hampered by the unpredictable and transient nature of lightning and the difficulties in making direct measurements inside thunderstorms, but advances in instrumentation, remote sensing methods, and rocket-triggered lightning experiments are now providing new insights into the physics of lightning. Furthermore, the recent discoveries of intense bursts of X-rays and gamma-rays associated with thunderstorms and lightning illustrate that new and interesting physics is still being discovered in our atmosphere. The study of lightning and related phenomena involves the synthesis of many branches of physics, from atmospheric physics to plasma physics to quantum electrodynamics, and provides a plethora of challenging unsolved problems. In this review, we provide an introduction to the physics of lightning with the goal of providing interested researchers a useful resource for starting work in this fascinating field.     

Existence and asymptotic estimates of periodic solutions of El Nio mechanism of atmospheric physics

This paper is devoted to studying the El Nin o mechanism of atmospheric physics. The existence and asymptotic estimates of periodic solutions for its model are obtained by employing the technique of upper and lower solution, and using the continuation theorem of coincidence degree theory.     

One-dimensional time-dependent capacitor model of breakdown in DBDs at atmospheric pressure

Breakdown in a dielectric barrier discharge (DBD) at atmospheric pressure is shown computationally to closely resemble breakdown in a series of small capacitors, which can be described by simple analytic equations. The ‘time-dependent capacitor model’ captures the physics of breakdown and is an accurate and efficient simulation tool.     

Nonaccelerator neutrino physics

The subject of these lectures is experimental nonaccelerator neutrino physics. We discuss experiments on solar and atmospheric neutrino flux measurements, as well as experiments devoted to recording the antineutrino on nuclear reactors in the context of determining the parameters of neutrino oscillations. Neutrino geophysics, a new field of science, is overviewed.     

部分相干涡旋光束通过大气湍流上行和下行传输的比较研究

基于广义惠更斯-菲涅耳原理,以高斯-谢尔模型(GSM)涡旋光束作为典型的部分相干涡旋光束,推导出GSM涡旋光束通过大气湍流斜程传输的平均光强、均方根束宽和交叉谱密度函数的解析表达式,并用以研究了大气湍流中上行和下行对GSM涡旋光束传输和对相干涡旋的影响.结果表明,在相同条件下,GSM涡旋光束下行传输受大气湍流的影响要小于上行传输,下行传输时相干涡旋拓扑电荷守恒距离要长于上行传输.对所得结果做了物理解释. 关键词： 部分相干涡旋光束 相干涡旋 大气湍流 上行和下行传输     

辐射传输中的一个伪极限问题及其数学物理原理

当太阳入射角度和观测角都趋向于水平时,由平面平行大气辐射传输方程计算得到的大气顶的反射辐射值不唯一,其值依赖于太阳和观测角的趋近于水平方向的路径曲线,即从数学角度称为出现极限的不唯一或极限不连续.事实上这违背了辐射场物理原理,这种不连续是由于常规算法中忽略了大气辐射传输中一个隐含的物理原理而导出的.在极限条件下必须引入满足Snell光学定律的界面边界条件,否则会导致错误的结论. 关键词： 辐射传输 局地热力学平衡 大气光学 Snell定律     

Three flavour neutrino oscillations in models with large extra dimensions

The key challenges for models with large extra dimensions, posed by neutrino physics are: first to understand why neutrino masses are small and second, whether one can have a simultaneous explanation of all observed oscillation phenomena. There exist models that answer the first challenge by using singlet bulk neutrinos coupled to the standard model in the brane. Our goal in this paper is to see to what extent the simplest versions of these models can answer the second challenge. Our conclusion is that the minimal framework that has no new physics beyond the above simple picture cannot simultaneously explain solar, atmospheric and LSND data, whereas there are several ways that it can accommodate the first two. This would suggest that confirmation of LSND data would indicate the existence of new physics either in the brane or in extra dimensions or both, if indeed it turns out that there are large extra dimensions.     

MiniBooNE overview and status

Recent discoveries in the neutrino sector have opened a new frontier in highenergy physics and cosmology. Evidence from neutrino oscillation experiments from around the world indicate that neutrinos oscillate between their different flavours and therefore may have mass. In addition, results from solar and atmospheric neutrino experiments as well as the accelerator neutrino experiment, LSND, cannot all be explained with the three standard model neutrinos. Is this new physics or is there some other explanation? The MiniBooNE experiment presently taking data at Fermilab is designed to address the LSND signal and answer this question. Progress on the MiniBooNE experiment will be presented and prospects for the future will be discussed.