SOME IMPORTANT CHARACTERISTICS OF SURFACE ALBEDO OF CHINA IN RECENT YEARS

Key words: 
• surface albedo /
• time variation /
• influence factor

Abstract: Based on the radiation data from 14 representive stations from 1986 to 1990 and the distribution situations of vegetetion and soil, come new characteristics of surface albedo in China are analysed. In different regions, surface albedo is different due to difference of surface features. Even though in the same region, surface albedo varies with seasonal variation. However, in the seasons and regions without snow cover, the long-term and interannual variation of surface albedo is not obvious.On the viewpoint of climate, the values of surface albedo mainly depend on whether there is snow cover or not. The interannual variation of surface albedo is greater to the north of 50°N, with a variation range of 5%. The influences of geographical conditions, such as latitude, elevation and air pollution, are also analysed.