Vertical atmospheric structure of the late summer clear days over the east Gansu loess plateau in China

In this paper, by using the sounding data collected in LOPEX05, we have analyzed the verticalatmospheric structure and boundary layer characteristics of temperature and humidity in the late summerover the east Gansu loess plateau. The results show that the bottom of the stratosphere is at about16500 m and varies between 14000 m and 18000 m above the ground. The center of the westerly jet islocated between 8300 m and 14300 m above the ground and its direction moves between 260^o and 305^o.There is an inverse humidity layer at about 3000 m height above the ground. The maximum of the airtemperature occurs at 1700 LST in the layer below 800 m above the ground. The inversion layer isrelatively thick. The time that the maximum of the vapor occurs is not the same for different layers.The depth of the atmospheric boundary layer can reach about 1000 m and the depth of the stable boundarylayer can be 650 m.