3 urban classes and WUDAPT

[Din19]

Dear WRF community,

I would appreciate it if someone could explain me the differences in using the simple 3 urban classes and WUDAPT generated LCZ. I understand that WUDAPT provides more detailed information about urban area providing around 10 urban classes.
However, I would like to understand some moments.
(1) In which cases is it better to use WUDAPT rather than 3 urban classes?
(2) In the case of default 3 urban classes, is there a document based on which these 3 urban classes were proposed?
(3) In the WRF simulations, which steps should I take to activate WUDAPT integrated LCZs?

Thank you.

 

[kwerner]

Hi,
This feature was given to us by an outside source, so we don't have a great deal of experience with it; however, below is the snippet of information that was included with the release note for this scheme. There are a couple links that should direct you to publications and additional information. Hopefully that will be helpful.

• Implementation of Local Climate Zone (LCZ using WUDAPT (31-41) landuse classes, along with standard urban classes (31-33). (Ref: Stewart, I.D. and Oke, T.R. (2012) Local Climate Zones for Urban Temperature Studies. Bulletin of the American Meteorological Society, 93, 1879-1900. Local Climate Zones for Urban Temperature Studies). More information can be found at https://ral.ucar.edu/sites/default/...model/WRF_urban_update_Readme_file_WRF4.3.pdf. Data from World Urban Database – World Urban Database and Access Portal Tools is required. Note that the parameters in the new urban table, URBPARM_LCZ.TBL, may vary greatly from city to city. The default values are probably not appropriate for any given city. Users should adapt these values based on the city they are working with.

 

[Din19]

Thank you for your reply @kwerner .