Bias in Q2

[Chetan]

Hello everyone,

I hope this message finds you well.
I am seeking your insights on an issue with the model’s Q2. It seems that Q2 (for single point comparison) is underestimating the input reanalysis data from ERA5. I have attached a figure for reference, which excludes the first day of the simulation to account for spin-up time.

For this simulation, I used a single domain with a 9 km horizontal resolution, initializing and providing boundary conditions with ERA5 reanalysis data at a 0.25-degree resolution.

Could anyone provide suggestions or potential reasons for this discrepancy? Your expertise and input would be greatly appreciated.

Thank you!
Best regards,
Chetan

 

[Ming Chen]

Chetan,
have you looked at the domian average situation? A single point may not be represenatative.
Also, it seems that OBS of LH is out of phase with WRF simulation. I am not sure yet what could be the possible reason.
Model performance can be affected by various factors, please refer to the literature for more information.

 

[Chetan]

Thank you @Ming Chen for your response. I will try to search the literature.