I want to see the effect of outer scale turbulence parameter(L0) on phase fluctuation in different atmospheric turbulence regimes. For that i want to know the value of L0 in different situation.
What do you mean exactly for "decide"? Then, if you are considering the integral scale it is a consequence of the flow structure and you can determine it. Are you considering the quasi-2D atmospheric turbulence problem or are you considering the ABL?
I am considering quasi-2D atmospheric turbulence problem for which what will be the value of outer scale turbulence sizes (L0) in different turbulence strength (weak , medium and strong)