大气窗区

8&13微米大气窗区水汽吸收系数的观测分析

Experimental study of the water vapor continuum in the 8-13 μ m window region

本文提出了利用3.7μm～4.0μm大气窗区内两个通道的同时测值和多项式拟合法计算短波红外大气窗区亮度温度的一种公式。计算误差小于±0.4K。

Presented in this paper is a formula of calculating brightness temperature in short .

云的增加对大气窗区也起着屏蔽作用，因而使额外的长波辐射返回地面。

Increased cloud also blocks the atmospheric window and returns additional long-wave radiation to the ground .

由卫星测值计算短波红外大气窗区亮度温度的一种方法

A method of determining the brightness temperature in short-wave IR atmospheric spectral window from satellite measurement

在大气窗区，大气气溶胶和水汽的连续吸收对长波冷却率的影响是同等重要的。

The effects of the atmospheric aerosol and continuum absorption on longwave cooling can be of equal importance .

结果表明：在近地面层，大气窗区（730&1200cm~（-1））（主要是水汽连续吸收）对总的冷却率贡献很大，在1公里处大约占72%；

It is shown that the atmospheric window region ( 730-1200 cm-1 ) ( mainly water vapor continuum ) has a significant contribution to the total cooling near the surface , with 72 % at the level of 1 km ;

对于热红外通道来说虽然处在大气窗区，但仍存在大气影响（主要表现为水汽吸收），使得到达星载传感器的下垫面热红外辐射能量受到了大气削弱。

For the thermal infrared channels , although they are in an atmosphere window , the atmosphere effects still exist ( mainly presented as the water absorption ), so as to weak the thermal infrared radiation energy received by the satellite sensor .

她说完这些话，那长了角的牡牛回答道：鼓起勇气，姑娘，不要害怕大海的波滔。云的增加对大气窗区也起着屏蔽作用，因而使额外的长波辐射返回地面。

So spake she , and the horned bull made answer to her again : Take courage , maiden , and dread not the swell of the deep . Increased cloud also blocks the atmospheric window and returns additional long-wave radiation to the ground .

在8～13μm大气红外窗区，大气透过率τ（？）主要取决于大气气柱水汽总含量W。

In 8-13 μ m atmosphere infrared window , the atmosphere transmissivity (τ _o ) is dependent upon the total moisture content of atmosphere air column ( W ) .

分析给出了该地区太阳可见光和近红外波段的行星反射率以及大气红外窗区亮度温度的空间变化；

The spatial variations of the visible and near-infrared reflectances and the brightness temperatures in the infrared window are analyzed ;

结果表明，在大气低层窗区e型吸收的冷却率小于非窗区的水汽冷却率，约占总冷却率的1／3；

The results show in the lower atmosphere , the cooling rate of the water vapour e-type absorption of window region is less than that of non - window region and is about 1 / 3 of the total water vapour cooling rate .

由海面大气参数直接计算大气红外窗区透过率

Direct calculation of atmosphere transmissivity for infrared window from atmosphere parameters above sea surface

将上述两个方程联用，可以方便地由海面大气参数测值直接计算大气红外窗区的大气透过率值。

Combining the two equations , τ _a in infrared window can be calculated conveniently and directly from the measured values of atmosphere parameters above sea surface .