Numerical Simulation of Surface Energy Fluxes over Heterogeneous Land Surfaces in HEIFE Area

Surface energy fluxes are simulated using 3D nonhydrostatistical RAMS over heterogeneous land surfaces in HEIE area. It is showed that the net radiation over oasis is larger than that over desert/Gobi. The Bowen ratios are 0.4 and 4.0 over oasis and desert respectively. Evaporation can last in the whole night and there is negative sensible heat flux over oasis. At the same time, simulations are compared with observations andsatellite remote sensing retrieval. The simulated surface latent heat fluxes are more consistent with observations than that of sensible heat fluxes over oasis. The simulated sensible heat fluxes are more consistent with observationsthan that of latent heat fluxes over desert/Gobi. In general, the simulated and satellite retrieved net radiation are both in agreement with the observations. On oasis, the error of surface sensible heat fluxes retrieved from satellite is smaller than the simulations, but the simulated latent heat fluxes are more consistent with observations than those retrieved. However, on desert/Gobi, the simulated sensible heat fluxes are more consistent with observations than those of satellite retrievd.