Hi WRF community,
I was looking for how to vertically integrate variable in WRF (such as integrating QVAPOR to get integrated water vapor [IWV] ).
I have done some searching and came across the paper
CORDEX-WRF v1.3: development of a module for the Weather Research and Forecasting (WRF) model to support the CORDEX community
https://gmd.copernicus.org/articles/12/1029/2019/gmd-12-1029-2019.pdf
They provided the formula (equation 21)

Because I do not seem to find other topics or discussion on this, I want to ask if this is the correct integration formula?
I was looking for how to vertically integrate variable in WRF (such as integrating QVAPOR to get integrated water vapor [IWV] ).
I have done some searching and came across the paper
CORDEX-WRF v1.3: development of a module for the Weather Research and Forecasting (WRF) model to support the CORDEX community
https://gmd.copernicus.org/articles/12/1029/2019/gmd-12-1029-2019.pdf
They provided the formula (equation 21)

Because I do not seem to find other topics or discussion on this, I want to ask if this is the correct integration formula?