Influences of Lake—Sand Dune Landscape on Local Microclimate in Badain Jaran Desert
By observing meteorological elements of lakes and sand dunes in Badan Jaran Desert hinterland over the same period,authores made comparative analysis on radiation characteristics,energy balance,albedo,divergence and sand environment differences between the lake and desert surface.The results showed that the air pressure of lake surface was higher than that of the desert area,with an average of about 2.43 kPa.The drag velocity was 0.31 m/s on dune surface,while it was 0.24 m/s on lakes.The divergence field(D) had a good correlation with the vertical velocity at lake center.In the evening,when D was greater than zero,the center of the lake airflow was sinking,and the vertical velocity was negative; while in the daytime,when D was less than 0,the center of the lake flow was rising,and vertical wind speed was positive,indicating that there was a certain amount of local circulation.
国家科技期刊平台
NSTL
万方数据
