Seasonal Variation on Land Surface Energy Budget and Energy Balance Components in the Northern Tibetan Plateau

It is very important to study the regional heat fluxes in the Tibetan Plateau Area.Using CAMP/Tibet(CEOP,Coordinated Enhanced Observing Period) Asia-Australia Monsoon Project(CAMP) on the Tibetan Plateau(CAMP/Tibet,2001-2005)) data,land surface heat fluxes are analyzed.Those are the net radiation flux(R_(n))、sensible heat fluxes(H)、latent heat fluxes((E) and soil heat fluxes(G_(0)).Some new results are gotten in the Northern Tibetan Plateau.1) In the Tibet plateau,the yearly variations of downward shortwave and long-wave radiation,upward shortwave and long-wave radiation,net radiation fluxes are clearly,its July numerical values are larger than January.Their eigenvalueas are 230,245,53,345 and 95 W\5m~(-2);2) In the Tibetan Plateau,the diurnal variations of net radiation,sensible,latent and soil heat fluxes are clearly.They increase with the increasing of solar altitude angle after the sunrise in the morning,and the maximum appears around the noon then they decrease with the decreasing of solar altitude angle.3) Latent heat flux is the main point in summer and sensible heat flux is the main point in winter.In June latent heat flux and sensible heat flux is almost equality.At the beginning of July the latent heat flux is the main aspect until September,then sensible heat flux is the main aspect until the coming year if May.4) The variation of soil heat flux is slow and its value is very small.