PV parameterization in BEM

[Olvictors]

Good day, colleagues.
Please I would like to have answers to the following questions:

i. In the PV parameterization inside BEM, is there a space between the roof and the PV OR it is assumed that the PV is directly on the roof?
ii. Would setting PV_FRAC to 100% of the roof turn off roof effects?
iii. Is there a way to turn off wall effects in the UCM?
iii. Is there a documentation for the coupling of BEP_BEM (multilayer) to Noah-MP OR how can I find out how the UCM is linked to the Noah LSM?

Thank you for your help in advance

 

[Ming Chen]

I am sorry that I don't have immediate answers to your questions 1-3. Would you please take a look at the papers below? Hopefully you can find some helpful information.

(1) Salamanca, F., and A. Martilli, 2010: A new building energy model coupled with an urban canopy parameterization for urban climate simulations––part II. Validation with one dimension off–line simulations. Theor. Appl. Climatol., 99, 345–356.
doi:10.1007/s00704-009-0143-8

(2) Martilli A, Clappier A, and Rotach M.W., 2002: An urban surface exchange parameterization for mesoscale models. Bound.-Layer Meteorol., 104, 261–304.
doi:10.1023/A:1016099921195

(3) Chen, F., H. Kusaka, R. Bornstain, J. Ching, C.S.B. Grimmond, S. Grossman-Clarke, T. Loridan, K. Manning, A. Martilli, S. Miao, D. Sailor, F. Salamanca, H. Taha, M. Tewari, X. Wang, A. Wyszogrodzki, and C. Zhang, 2011: The integrated WRF/urban modeling system: development, evaluation, and applications to urban environmental problems. International Journal of Climatology, 31, 273-288. DOI: 10.1002/joc.2158.
doi:10.1002/joc.2158

To answer your question 4, please take a look at the codes module_sf_noahdrv.F, module_sf_noahmpdrv.F, and module_surface_driver.F, in which you can find conditional options like:

IF(SF_URBAN_PHYSICS.eq.1) THEN
....
IF((SF_URBAN_PHYSICS.eq.2).OR.(SF_URBAN_PHYSICS.eq.3)) THEN
.....

These codes deal with the coupling of urban physics with LSM scheme.