EXPERIMENTAL STUDY ON REMOTE SENSING OF ATMOSPHERIC SOUNDING BY MEANS OF MULTIFREQUENCY MICROWAVE RADIOMETERS

In this paper, the principle and method of microwave remote sensing atmospheric sounding are described. In order to carry out the experimental study, the 4 channels in 5mm—1.35 cm band microwave radiometers have been constructed. The field experiment in September-October 1981 was carried out. In this paper, the results obtained by different inversion methods are compared with each other. The experimental result shows that it will be satisfactory, if the temperature profile and inversion of lower atmosphere are derived from remote sensing of 2 channels (frequencies: 52.8 Gc and 54.4. Gc) in 5 mm band. The atmospheric humidity can be obtained from the remote sensing of 1.35 cm band. While the change of air mass exists, signal reveals itself significantly in the atmospheric microwave radiation. The variations of atmospheric temperature and humidity have been analysed and compared with those obtained from radiosonde.     

“科学”号海洋科学综合考察船

2012年9月,我国海洋领域第一个国家重大科技基础设施——“科学”号海洋科学综合考察船在青岛交付入列,它引领了我国新一代科学考察船的设计与建造,开启了我国深远海科学考察跨越式发展的新时代。“科学”号运行八年来,聚焦西太平洋深远海研究,开展了卓有成效的基础调查,显著提升了我国深海大洋的综合探测能力与研究水平,为推进我国海洋强国战略提供了有力的科技支撑。     

数学习题课的导学功能初探——以“平行四边形复习课”为例

在数学的教学过程中,习题课教学是必不可少的.那么,数学习题课教学,应该如何进行,又应该让学生通过习题课学到什么呢？笔者认为,数学习题课的功能不仅是对数学概念、命题的复习巩固,也应该是对数学解题方法的总结提炼,甚至应该起到对学生后续学习的引导作用.     

硼酸铅晶体的热学特性

给出了在室温下用光热偏转技术测量的新型PbB₄O₇晶体的热扩散系数,实验结果表明,该晶体沿三个主轴方向的热扩散系数呈各向异性;对0^oY切割晶片,在X-Z平面内,热扩散系数随角度的变化关系呈椭圆分布,这与理论估算结果相符合。     

多频段微波遥感大气层结的实验研究

本文概述了微波遥感大气温度、湿度层结的原理和反演方法.为了进行实验,研制和改善了5mm—1.35cm波段中4个频段的微波辐射计.本文讨论了1981年9—10月,多频段微波遥感大气层结的实验结果,并用不同的反演方法进行了比较.实验结果表明,用5mm波段 52.8Gc和 54.4 Ge两频段遥感大气温度层结,反映低空大气温度和低空逆温性能良好.用1.35cm波段可遥感大气湿度状况.当气团变化时,在微波遥感信息中有所反映,并和无线电探空仪测量结果是一致的。