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GFS PBL

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Hello,

User's guide and tutorial presentations clearly state that GFS (hwrf) is NMM-only PBL scheme. However, once during testing different physics I set by mistake bl_pbl_physics = 3 and sf_sfclay_physics = 3 and got very good results, in fact best among all other PBL schemes I verified against surface observations. Then I discovered by reading User's guide that this is basically something that should not even work in ARW at all.

Basically, any time I test that scheme it produces superior results compared to pretty much any other PBL scheme. I'm confused. Is that a mistake in official documentation or it is really completely unsupported scheme in ARW but somehow works just fine?

Thank you!
 
The options bl_pbl_physics = 3 and sf_sfclay_physics = 3 work for WRF-ARW.
The document is kind of confusing. We will correct it soon.
 
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