关键词: 中国北方, 典型强沙尘暴, 潜热通量, 感热通量

Abstract: In order to be better understanding the characteristics of surface heating field in typical severe dust-storms, the reanalysis grid data of NCEP/NCAR of global daily average are used to analyze the distribution characteristics of the sensible and latent heat flux fields for 16 typical severe dust-storms in northern China. Meanwhile, a comparative analysis of surface heating field is done among the different areas where the dust-storms occur. The results show that the positive sensible and latent heat flux usually appear in the areas of dust-storms occurring. The Nanjiang Basin, the east of Northwest China and the north of North China are areas where the dust-storms frequently occur, the surface heating fields in these areas are mainly appeared as the latent heat heating, the sensible heat heating, and the sensible and latent heat heating respectively. The occurrence of dust-storms in the areas of Nanjiang Basin and the east of Northwest China is influenced by the underlying surface more than that in the areas of the north of North China.

Key words: northern China, typical severe dust-storms, latent heat flux, sensible heat flux