Abstract
The infrared radiation in the spectrum of MOS-1/ VTIR band 2 can not penetrate through the atmosphere because it is located at the strong absorption range by water vapor. The data, however, reflects some condition of the top atmospheric layers. In order to know the degree of penetration of the light of VTIR band 2, we have done the evaluation of transmittance using the high mountain range data. A knowledge has been obtained that this light is transmitted from an altitude of at most 3000 meters to the satellite position. Based upon this fact, some vertical movements of water vapor are estimated using VTIR band 2 data. The results are compared with the direct measurement data obtained by radio-sonde and proved to be true. Third, we investigated some characteristics of the area where such water vapor depression occurs. The area is situated just north side along the jet axis. And the farther adjacent area northwestward from the water vapor depression area is covered with progressive high pressure. These phenomena are reasoned from the viewpoint of fluid dynamics in the earth rotational field.
