Problems for a 50-Year (2015-2065) WRF Dynamical Downscaling Simulation

[feifeiyu1225]

Hi everyone, I'm planning to conduct a 50-year (2015-2065) WRF dynamical downscaling simulation, and I have a few questions:

1. How should I divide the simulation period? Should I run it in smaller chunks, and if so, how long should each segment be?
2. What should be the spin-up time for such a long-term simulation?
3. My target region has latitude and longitude intervals of around 20°. Should I replace WRF's default data with 90m resolution SRTM data?

Thanks for your insights!

 

[Ming Chen]

Please see my answers below:

Hi everyone, I'm planning to conduct a 50-year (2015-2065) WRF dynamical downscaling simulation, and I have a few questions:

1. How should I divide the simulation period? Should I run it in smaller chunks, and if so, how long should each segment be?

There is no strict rule how long a segment should be. You can run year-by-year or month-by-month, using the restart capability of WRF.

1. What should be the spin-up time for such a long-term simulation?

For long-term simulation, lateral boundary forcing is more important. Therefore, the spin-up time of 9-12 hours will be enough.

1. My target region has latitude and longitude intervals of around 20°. Should I replace WRF's default data with 90m resolution SRTM data?

No, it is not necessary.

Thanks for your insights!