PX LSM soil nudging

[panting]

Hello!

I am currently learning how to run an assimilation experiment of indirect soil nudging with the Pleim-Xiu Land Surface Model in WRFv4.4.2. There is very little information available online about soil nudging. I have only found a document related to the PX LSM:https://www2.mmm.ucar.edu/wrf/users/docs/PX-ACM.pdf, but after reading it, I am still confused about what observational data to download before performing indirect soil nudging, how to use OBSGRID to preprocess the data, and other related issues. Could you recommend any learning or training materials related to this topic? I would greatly appreciate any help you can provide!

Sincerely,
Pan.

 

[kwerner]

Hi Pan,
I'm not sure what resources you've already tried, but the WRF Users Guide has a section dedicated to the OBSGRID program. Additionally, you may find this presentation useful. I'm not sure any of it specifically mentions soil-nudging, but I would assume that would be done similarly to nudging other variables.

 

[panting]

Hi Pan,
I'm not sure what resources you've already tried, but the WRF Users Guide has a section dedicated to the OBSGRID program. Additionally, you may find this presentation useful. I'm not sure any of it specifically mentions soil-nudging, but I would assume that would be done similarly to nudging other variables.

Hi！

Thank you very much for your help! I will check the files you mentioned!

Wish you all the best.