Test a modified surface wind interpolation scheme for complex terrain in a stable atmosphere

This study proposes a modified scheme for surface wind interpolation respective to stable atmospheres. A potential flow concept is applied to the simple 1/r2 interpolation to handle direct terrain effects. A procedure is designed to pretreat digital terrain data. Numerical tests are made for the Hong Kong area with a diagnostic wind field model to compare the influences of the modified interpolation. The effects of the adjustment factor α in the diagnostic model are also discussed.