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NCAR / hrldas

HRLDAS (High Resolution Land Data Assimilation System)
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bug fix for LW calculation in SLUCM #167

Closed cenlinhe closed 8 months ago

cenlinhe commented 8 months ago

This is a bug fix for the longwave radiation calculation in single-layer urban canopy model (SLUCM). The bug was originally reported and fixed in this WRF issue: https://github.com/wrf-model/WRF/issues/2011 The fix was proposed by the user in this WRF PR: https://github.com/wrf-model/WRF/pull/2016

tslin2 commented 8 months ago

Based on the paper and information that I see, yes, this is the bug fix. I may give a quick test to see how much that can influence the 2m temperature.

This bug fix shows improvement in 2m temperature bias and RMSE compared to observations for my 7-day case study at 1-km in urban grid cells of Atlanta city. (left) original one, (right) bug fix simulation image

The below figure shows the difference of 2m temperature in the urban grids. The y axis (bug fix run minus original one) and x axis (original one)

image