光学遥感大气气溶胶和水汽的研究

本文用研制的辐射计(0.5—1.06微米七个波段),在北京地区进行了一年的观测,从中分析了大气气溶胶的特性、气溶胶粒子浓度和谱分布的变化规律及其和气象条件的关系。根据遥感大气水汽含量,和探空资料进行比较,取得了一致的结果。文中还讨论了气溶胶和水汽对大气光学厚度的影响以及在水汽吸收带中,大气光学厚度和大气水汽含量的关系。     

大气痕量气体NO_2的研究

为了测量大气中NO_2的含量,我们研制了自动太阳光谱光度仪。在地面遥感测量太阳直射光谱的4470—4490波段,从辐射传输方程及极大相似法,导出了大气中NO_2的含量。而大气中NO_2的浓度,在北京郊区测量了数月。本文对测量结果进行了讨论。     

STUDY ON ATMOSPHERIC TRACE GAS NO_2

The content of NO_2 in the atmosphere is one of the important factors for atmospheric environmental appreciation. An automatic solar spectrophotometer (ASS) system has been developed in order to observe the content of NO_2 in the atmosphere. The column content of atmospheric NO_2 has been obtained by use of radiative transfer equation and maximum resembled method, through the ground-based observation of direct solar radiative spectrum of 4470—4490. Some months' observations of NO_2 have been made in the suburbs of Beijing. The results have been discussed here.     

谈谈球状闪电

根据1984年9月25日北京晚报报道:“河北发生罕见雷电击人事件.九月十三日下午五时许,河北省肥乡县大寺二村贾朝元和贾雨同时被雷电击死.当时五十三岁的农民贾朝元和其子贾社平正在村北地里拉玉米.父子俩几乎同时发现一个直径约一尺左右的红火球向他们撞来,贾朝元前胸遭受火球轰击,立即死亡.贾社平被摔出一丈远.与此同时,二十一岁农民贾雨,正在家中冲门的椅子上坐着,一火球从门而入,立即将贾雨击死,并将其屋角击毁.贾雨的外祖母被巨响震聋.村中另外还有正在收看的四台电视机,两台开动的电动机,一台正在广播的扩大器被击毁.” 新闻报道当然不…     

STUDY ON OPTICAL REMOTE SENSING ATMOSPHERIC AEROSOL AND WATER VAPOUR CONTENT

With the multichannel radiometer of visible and infrared band, ground-based observationsof the intensity of solar spectrum and the atmospheric optical thickness have been made andthe method of remote sensing atmospheric aerosol and water vapour content have been studied.With the radiometer(seven channels of 0.5--1.06μ), observations have been made for morethan one year in Beijing. The atmospheric water vapour content obtained from remote sensingis in accord with that from radiosonde data. In this paper, the characteristics of atmosphericaerosol and total water vapour content are discussed, and the influences of aerosol and thewater vapour on the atmospheric optical thickness and the relationship between them in thewater absorption region are also treated with.