Running WPS with ERA5 input

qingling

New member
I have a other question that SM007028 appear negative values in met_em.d0* files using ERA5 after metgrid.exe run successfully. How can soil moisture be negative? This is unreasonable.
Hi,
If Vtable.ERA-interim.pl works for you, I don't think you need to switch to Vtable.ECMWRF.
1656748874911.png
 

Ming Chen

Moderator
Staff member
Can you identify the points where soil moisture is negative? And what are the landuse type at these points? Do the negative soil data exist in original ERA5 data?
 

qingling

New member
Can you identify the points where soil moisture is negative? And what are the landuse type at these points? Do the negative soil data exist in original ERA5 data?
I think the points of negative vaules can not identified, because the resolution of pixel is so high about 5 km. However, I can check the ERA5 data for its soil data to check if exist negative values.
 

deva_wrf

New member
error while running ungrib.exe

ihave attached the screen shot of namelist.wps and data the dates are correct and i have linked the Vtable of Era_intrim_pl
 

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marose

New member
Hi all, I came across this thread and it's been very useful. But could you kindly let me know whether I need to download the ERA5 daily sfc and pl datasets for a seasonal WRF run? If not, please link me to where I can obtain the seasonal atmospheric data for ERA5.

Thanks.
 

Ming Chen

Moderator
Staff member
Please see the attached file that describes how to download ERA5 data. Hope this is helpful for you.
 

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marose

New member
Please see the attached file that describes how to download ERA5 data. Hope this is helpful for you.
Thanks for the link Ming. But could you or anyone else tell me if I need monthly ERA5 data for monthly simulations? Or I could still use the daily ERA5 data for the monthly simulations. Thanks.
 

Ming Chen

Moderator
Staff member
Please download ERA5 data at 6-hour intervals. This is because WRF lateral boundary needs to be updated as frequently as possible.
Even if you are running WRF for long-term simulation, e.g., monthly, seasonal or multi-year, you still need 6-hour interval data to update the lateral boundary.
 

marose

New member
Please download ERA5 data at 6-hour intervals. This is because WRF lateral boundary needs to be updated as frequently as possible.
Even if you are running WRF for long-term simulation, e.g., monthly, seasonal or multi-year, you still need 6-hour interval data to update the lateral boundary.
Thank you Ming. This is very helpful.
 

fipoucat

Member
Did you managed to run with success grib files from above mentioned data link? I downloaded both sfc and pl data for my simulation window but getting error:
End-of-record mark (7777) not found-796733309
 
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