The impact of local advection on the accuracy of surface fluxes based on remote sensing

The theoretical explanation of energy "unbalance" phenomena is presented and local advection experiments executed over a farmland are introduced. The results show that, (1) the influence of local advection depends on wind speed, wind direction, fetch and temperature difference between two adjacent fields or pixels. (2) Because there is uncertainty in heat fluxes obtained by some micrometeorological methods (mainly caused by advection and instrumental precision), and the fluxes are often regarded as the calibrations of remote sensing fluxes, the accuracy of fluxes retrieved from remote sensing data will be affected.