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Using ECMWF data in the WRF model

H

hakom5_

New member
Hi, I want to create a forecast by including the elevations shown in the visual, but I don't know how to do it. Some of the simulations I ran based on GFS data were not very successful in terms of precipitation. I am curious about how to use ECMWF data and how to produce a potential or max. temperature forecast with ECMWF, including the elevations as shown in the visual. I would be very grateful if you could help me with this. I need more parameters and more successful simulations.

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First of all, if the simulation is not as ideal as expected, it may possibly be due to physics/dynamics in the modeling system. Changing the forcing data can only lead to changes in the simulation to some extent.

which ECMWF data do you intend to use?
 
Ming Chen said:
First of all, if the simulation is not as ideal as expected, it may possibly be due to physics/dynamics in the modeling system. Changing the forcing data can only lead to changes in the simulation to some extent.

which ECMWF data do you intend to use?
Click to expand...
Thank you for your response. For example, I want to create a T2 or potential temperature and precipitation map using the GRIB2 data from this site: ECMWF Data Store (ECPDS), but I don't know how to do it. If you have a better data recommendation, that would also be welcome.

Do you have any physics/dynamics settings that you recommend for me?
 
WPS/ungrib includes a few Vtables that can be used to process various ECMWF data. Please take a look and see whether you can find a Vtable that works for ECPDS data. If not, I guess you will need to create a Vtable for this dataset. The document here describes in detail how to create Vtable. Please take a look and hope it is helpful for you.
 
Ming Chen said:
WPS/ungrib includes a few Vtables that can be used to process various ECMWF data. Please take a look and see whether you can find a Vtable that works for ECPDS data. If not, I guess you will need to create a Vtable for this dataset. The document here describes in detail how to create Vtable. Please take a look and hope it is helpful for you.
Click to expand...
Of the two available Vtable files, I get a negative result when trying the ECMWF one because the latest ECMWF data is now in GRIB2 format. I haven't tried the Hybrid one yet, but I think it might also
 

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In this case I would say that the Vatbles we provide for processing ECMWF data don't work for the ECPDS data you have. You will need to create a Vtable for the ECPDS data. Please see the document here regardiing how to create Vtable.
 
Ming Chen said:
In this case I would say that the Vatbles we provide for processing ECMWF data don't work for the ECPDS data you have. You will need to create a Vtable for the ECPDS data. Please see the document here regardiing how to create Vtable.
Click to expand...
None of the Vtables I created worked.
 
Would you please contact ECMWF and seek information of GRIB parameters used for the ECPDS data? Unfortunately we have no such information. Due to limited human power, we also cannot create Vtable for each individual datasets from various service centers.
 
The new EC data requires an additional step to convert EC grib2 data to grib2 data WPS supports. It requires installation of ecCodes library (available from ECMWF). Please see this post for conversion command.
 
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