摘要
介绍一种测量大气水汽总量的方法和仪器。仪器测量出通过大气的太阳（或月亮）光谱水汽吸收带带心（吸收带心波长取９３５ｎｍ，参考波长８８９ｎｍ）的剩余强度Ｒ，按相关式Ｒ＝０．５９求出测量程上大气的水汽总量Ｗ，垂直气柱上的水汽总量Ｗ０由Ｗ０＝Ｗ／ｍ求出，ｍ为观测方向对应的大气光学质量．仪器观测结果和气象部门的探空资料符合得较好，平均误差为５７％．
A method and an instrument for measuring the total precipitable water of the atmosphere is described. The instrument monitors the central residual intensity of the water vaper absorption band of the atmosphere R. The central wavelength of the absorption band is 935nm and the reference wavelength is 889nm.The total precipitable water W(cm) can be decided by R=0.59.The total precipitable water of the vertical atmosphere column W0 can be obtained from W0=W/m, where m represents the optical air mass in the direction of the observation.The observation result of the instrument corresponds fairly to that of the radiosonde evaluation (mean error is 5.7%).
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
1996年第2期195-198,共4页
Journal of Beijing Normal University(Natural Science)
关键词
水汽
剩余强度
吸收带
大气
光学法
total precipitable water
residual intensity
absorption band
