Determine the answer of the following question

Question- A pair of cyclonic and anticyclonic vortices is observed in the atmosphere at 43 degrees north. Both vertices have the same area averaged value of relative vorticity=1 x 10^-5. Suppose that a uniform horizontal convergence and divergence associated with the cyclonic and anticyclonic vortices, respectively, persists during an entire day with equal magnitudes ( |del dot v|= 2 x 10^-6).

Part 1- Estimate the respective changes in voticity as a consequence of this circumstance.

I need experts help to calculate the respective changes in voticity.