A research on the Stratosphereic Sudden Warming

In this dissertation, we described the basic measure of detecting atmosphere-the basic component of Radiosonde and it´s principle. With the definition of the Stratospheric Sudden Warming (SSW) and the measure of ascertaining the event of the Stratospheric Sudden Warming, my research are mainly focused on finding the case of SSW phenomenon from the Radiosonde data at Alaskan in American between 2001 and 2004, I studied the basic characters of the temperature field in Stratosphere in the high latitude area of Alaskan, In the high latitude region the temperature field´s changing regulation of the layer 30hpa height; And the temperature field´s changing regulation in the same station in 30hpa height in the whole year; And also I have simply discussed the cause of the Stratospheric Sudden Warming.