How does the WRF BEP/BEM considers urban Anthropogenic heat?

[Tony]

Dear community,

To the best of my knowledge, I think the SLUCM considers anthropogenic heat by giving a heat source term to each urban category(e.g., 20W/m2 for subruban category). and the BEP/BEM calculate the heat emission from air conditioner (AC).

My questions are:
1. Does BEP/BEM considers other source of anthropogenic heat? like traffic and domestic heat other than AC.
2. if not. Can I add a spatial varying anthropogenic heat term into simulation or urban-category-dependent term like the ones in SLUCM?

Thanks for your attention and time.

Best,
Tony

 

[fenlin]

Hello, to my understanding, the BEM only takes into account the anthropogenic heat from air conditioning and human metabolism, and does not consider the heat emissions from traffic. To export traffic heat emissions, it is necessary to modify the BEM code to include the hourly emission of traffic heat. Have you resolved this issue?

 

[Tony]

Hello, to my understanding, the BEM only takes into account the anthropogenic heat from air conditioning and human metabolism, and does not consider the heat emissions from traffic. To export traffic heat emissions, it is necessary to modify the BEM code to include the hourly emission of traffic heat. Have you resolved this issue?

Not yet. I think it is possible but unfortunately I did not find practical guidelines for applying traffic emission into simulation
Also I am not so sure if the current WRF version considers the human metabolism.

 

[Ming Chen]

@ Tony,
I am not that sure about details of AH in BEM. I will talk to our expert and we will get back to you.

 

[cenlinhe]

1. BEP/BEM does not consider anthropogenic heat from traffic or other types of domestic heat.
2. Yes, you can add a input map of anthropogenic heat term into the SLUCM to replace the current table-based value, which requires some code updates in the I/O part. You could probably look at how urban fraction variable is input from wrfinput and use it as an example to follow the code changes of adding a new input anthropogenic heat variable.