I have wind data，I want to calculate surface u momentumstress in roms_frc.nc in roms-tools，its unit is N/m2,I use smith equation to calculte wind stress
DA=1.23 %% aie density
DO J=1,JM
DO I=1,IM
WINDV=SQRT(u(I,J)**2+v(I,J)**2 )
CF=(0.61+0.063*WINDV)*1.E-3 !Smith wind stess drag coefficent
WUSURF(I,J)=-CF*DA*u(I,J)*WINDV
WVSURF(I,J)=-CF*DA*v(I,J)*WINDV !?why divided 1000 and mutiply(-1)
ENDDO
ENDDO
i regard it as input of surface u momentumstress in roms_frc.nc file
however 16m/s wind can get 1m/s current in bohai. i think is two large
so i divide 1025(rhoo),the current is very small.
I will really appreciate if anyone woulfd help me solve this problem. Thank you.
surface u momentumstress
Re: surface u momentumstress
no negative sign in equation