WPS Output for EQUATES

EQUATES
1

Hi CMAS forum,

I’m trying to run CMAQ by using EQUATES with my own meteorology data. I should use MCIP to generate the meteorology input for CMAQ. But MCIP need the WPS output file (geoxx.nc). I would like to ask if we have WPS output for me to download?

Thanks!!!

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Hi, I’m still waiting for the help, is it possible to get those WPS output files? :smiling_face_with_tear:

3

@joshun,

Can you please verify if you ran WRF or another meteorology model?

If you ran WRF, I suggest outputting the “LANDUSEF” variable in your WRF run to keep things consistent – which should remove the need for a geogrid file. For instructions on what additional meteorology information MCIP would need from WRF, other than the default, can be found here: CMAQ/DOCS/Users_Guide/Appendix/CMAQ_UG_appendixE_configuring_WRF.md at main · USEPA/CMAQ · GitHub.

Additionally, resources on how to configure your WRF simulations to output those fields is found here: WRF Output — WRF Users Guide documentation.

If you are not using WRF or cannot rerun WRF, we can certainly provide a geogrid file that was used for EQUATES, but note that this may be inconsistent with how you ran your meteorology model (i.e., the meteorology solutions generated are based off your landuse setup). This can lead to results that are hard to interpret, so if you can avoid it I would.

1 Like
5

Hi Sidi,

I’m planning to use Regcm4 data to generate the MCIP input for CMAQ running.

Now, I’m trying to transfer the Regcm4 data to EQUATES WRF out file format. And then I guess I can use MCIP to generate the CMAQ input. So, I guess maybe I can directly use the geogrid file as the MCIP input to generate the input of CMAQ by using Regcm4 data.

Thanks!!!

6

@joshsun,

Apologies for the late reply. We are still trying to track down our geogrid file.

A cursory search of RegCM4 seems to suggest that the meteorological core of the model is based on MM5 (the predecessor to WRF). If that’s correct, then you should be able to extract “LANDUSEF” information that is consistent how that model was run, instead of hacking it with landuse information from our meteorology run. Additionally, I suggest looking at MCIPv3.6 which supported MM5. This may help you understand how you can extract MM5 type of information to generate meteorology inputs for CMAQ.

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You are totally fine. That’s help a lot. I’ll try to understand MCIP v3.6. Thank you!

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@joshsun here is the geogrid file for the EQUATES 12US1 WRF simulations: AWS S3 Explorer