urban

Hello everybody If urban landuse does exist in the model domain(1 in USGS and 13 in MODIS),how wrf recognize 1-Low density residential, 2-High density residential, and 3- Commercial in the area? is it defined in land use?I would be grateful if anybody can help.

Dear WRF&MPAS experts, I am working with the MPAS model to run sensitivity experiments on urban effects. However, i am not sure how to modify the landuse in this model. In the WRF model, it's easy to change 'LU_INDEX' and 'LANDUSEF', but i can't find the equivalent variables in the MPAS model...

Hello Experts, I recently ran a simulation on WRF4.4 using SLUCM, initialized by ERA5 data, coupled with Noah LSM and the cglc_modis_lcz. Though my real.exe was successful, but my simulation keeps crashing without a specific reason, I also tried to run it on WRF version WRFV4.5 but the problem...

I am a graduate student in Japan, sorry for my poor English. As the title suggests, I'd like to assign BETR by urban category. Although I have rewritten module_sf_urban.F and URBPARM_LCZ.TBL as in the attached file and run the calculation, only BETR is not loaded. I've already confirmed that...

Hi everyone, This error is similar to those reported in several other cases over the past year ('WARNING, THE URBAN FRACTION WILL BE READ FROM URBPARM.TBL' occurred., Problems running Urban UCM and WUDAPT LCZ, cglc-modis-lcz_100m dataset " WARNING, THE URBAN FRACTION WILL BE READ FROM...

I am a graduate student in Japan, sorry for my poor English. As the title suggests, I'd like to assign BETR by urban category. Although I have rewritten module_sf_urban.F and URBPARM_LCZ.TBL as in the attached file and run the calculation, only BETR is not loaded. (I've already confirmed that...

Dear community, I am running wrf-chem 3.9.1 version with sfc_urban_physics=1. But it stops at the first running time when dealing with domain2. It shows forrtl: error (78) in rsl.error. However, it ran sucessfully with sfc_urban_physics=0. I tried some tests. when 4 nodes ,per nodes with 64...

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...

Hello experts, I ran two simulations with sf_urban_physics = 0 and sf_urban_physics = 1 (SLUCM), I coupled both with Noah LSM, Please I will like to know how Noah calculates the skin surface temperature for both. I took a look at the module_sf_noahlsm.F code but i do not have clarity on it, I...

Dear community, I have been trying to run WRF CHEM simulation using the single layer UCM (sf_urban_physics = 1), like the title says. However, no matter what I try the simulation stops after some period of time. I have conducted successful simulations using no urban (sf_urban_physics = 0) or...

Dear WRF Expert, I'm running the model over Cyprus using three one-way nested domains at 12, 3, and 1 km, respectively. I'm considering the sf_urban_physics = 2 and the hybrid 100-m global land cover dataset with Local Climate Zones. To use this dataset, I followed the instructions provided...

Hello everyone, I'm running some simulations with WRF version 4.5.1 coupled with sf_urban_physics = 2 and bl_pbl_physics = 8 for three one-way nested domains for a month. Initially, I defined the eta levels with auto_levels_opt = 2, dzbot = 35, dzstretch_s = 1.3, and dzstretch_u = 1.1. This way...

Hi all, I tried to run WRF-Chem with LCZ and urban canopy scheme, but it failed. The attachments are namelist.input, namelist.wps, and rsl.error.* files. Please note that: 1. I tried to run WRF-Chem with default land use and it was successful. 2. I tried to run WRF-Chem with LCZ land use...

Dear WRF community, I have a question about soil moisture in the green roof option. I would highly appreciate it if someone could help me. For single layer UCM (SLUCM), how can I change the initial soil moisture of green roofs? While green roof properties for SLUCM are specified in...

I am currently studying the heat island of Bangkok, Thailand as part of a Southeast Asian urban climate research. This study uses WRF versions 4.2.2 and 4.3.3. Also, Noah LSM and Single layer UCM are used. I have run simulations on many cases, but the simulations do not reproduce the daytime...

Hi, I have run WRF with the SLUCM and I am just interested in understanding the variable urban canopy Temperature (TC_URB)? and whether the 2m temperature is calculated the same way as without the urban canopy model?

Hi, I came across segfault for WRF 4.5 using the new modis-lcz dataset under SLUCM urban physics. The segfault always happen at 1 of the 72 cores in Cheyenne. From the error log it seems that the segfault happens during avgflx at solve_em.F. I cannot pinpoint how it happens without any...

Hi, everyone. Recently I have a question. That is, if I have a gridded dataset of urban building height. How can I use it when I run a WRF simulation? As I know, we re allowed to replace the land use and land cover (LULC) data. Is there a similar way to deal with urban 3D data? Now only...

Hello all, My name is Young. I'm a grad student who just started learning WRF. My goal is to analyze Urban Heat Island effect with WRF, and I recently installed WRF-ARW 4.5 in my Linux successfully i. I'm still figuring out the next step- preparing an LCZ map of my ROI and others that is...

Hello. I'm trying to run the latest version of the WRF model by implementing the hybrid 100-m global land cover coupled with the BEP urban parameterization. I have 3 nested domains with 12 km, 4km, and 1km horizontal resolution, respectively. Unfortunately, during the simulation of the first...