use sfc_diag to diagnose 2m t/q inside NoahMP#43
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The test with this proposed change is running. I have rerun p8c 5-day forecasts (P8F) with the old way to calculate 2m T/Q. The difference can be see here |
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It looks that t2m is interpolated from tv and sfctmp? Is it done over vegetated part and bare part separately? |
wzzheng90
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p8c uses the latest update code of NoahMP. So the 2-meter temperature and humidity over land are derived from NoahMP two-tile values instead of using sfc_diag. The diurnal variability becomes too large (too warm daytime and too cold night time) from this change. Now we would like to test using sfc_diag approach to calculate 2-meter temperature and humidity inside NoahMP.