I have made many experiments about East-Asia precipitation of summer. But there are grid-point storms and the rain belt is at north partially. I have no ways to solve the above problems. So I ask for helps here. And I find RegCM3 can do one-way nest experiment. But the RegCM3's guide don't explain how to do one-way experiment. If someone know how to solve this problem, please tell me. My email is ljy_926@126.com.