View Full Version : Convention for winds and currents (in ocean) are confusing mee..!

14th September 2010, 10:44 AM
Dear All

This is a very basic question. We all know to resolve winds into u and v components if speed (ff) and direction (dd) are given

zonal component : u = -ff sin (dd)
meridional comp : v= -ff cos (dd)

right.. then what is the convention for resolving ocean currents ... as winds are those from where they are coming from .. and the currents are those towards where they are going... !

If at all ... the convention of currents are opposite to winds... can we use
u = ff sin (dd) & v = ff cos(dd) .. just I multiplied these two with -1 to change the notation. Or should I correct this ...

Am I correct... please give reply...

thanks in advance...


18th October 2010, 10:10 AM
Vector direction does not change, whether you consider wind direction or ocean circulation direction.

If winds are from west to east we call it westerly, however for ocean we call it eastward, but the vectors are from west to east only. So, convention to get vector components is remains same.

Hope it helps ...