Changes between Version 2 and Version 3 of Ticket #916


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Timestamp:
05/16/22 17:13:52 (2 years ago)
Author:
arango
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  • Ticket #916 – Description

    v2 v3  
    8181Many thanks to my colleagues at Rutgers, John Wilkin, Julia Levin, and Travis Miles, for the discussions about WRF-ROMS coupling.
    8282
    83 The zero values in the sensible heat flux in the Mid-Atlantic Bight (MAB) can be corrected by commenting a limiter kluge in WRF modules **module_sf_sfclay.F** and **module_sf_sfclayrev.F**. Unfortunately, it has been there for years, and the WRF developers refuse to correct it. Specifically, we need to comment out these two lines:
     83----
     84
     85The zero values in the latent heat flux in the Mid-Atlantic Bight (MAB) were corrected by commenting a limiter kluge in WRF modules **module_sf_sfclay.F** and **module_sf_sfclayrev.F**. But unfortunately, it has been there for years, and the WRF developers refuse to correct it. Specifically, we need to comment on these two lines:
    8486 {{{
    8587!   line 898
    … …  
    9193    HFX(I)=AMAX1(HFX(I),-250.)
    9294}}}
     95
     96Furthermore, unlimited and limited latent heat flux and its difference (unlimited minus limited) values are shown below.  Notice the effects of the removing the limiters along the US East Coast, MAB, and the Gulf of Maine.
     97
     98[[Image(https://www.myroms.org/trac/wrf_irene_lhfU.png, center, 600)]]
     99
     100[[Image(https://www.myroms.org/trac/wrf_irene_lhfL.png, center, 600)]]
     101
     102[[Image(https://www.myroms.org/trac/wrf_irene_lhf_diff.png, center, 600)]]
     103
     104The resulting [[span(style=color: #FF0000,net heat flux)]] difference between using unlimited and limited latent heat fluxes yields:
     105
     106[[Image(https://www.myroms.org/trac/wrf_irene_nhflx_diff.png, center, 600)]]
     107
     108Therefore, users need to be aware of the latent heat flux **limiters** in the WRF modules mentioned above and experiment in their particular applications.