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Dear all, I am performing WRF-Chem v3.9.1 simulations using the CBMZ-MOSAIC chemistry option (chem_opt=32). My parent domain simulation was completed successfully. But, after using ndown to generate boundary conditions for the nested domain files, I gave a run for the nested domain, and the...

HI @peng, I couldn't solve the problem while using chem_opt=202. So, I switched to other chemistry options. I think you can ask the question separately in this forum, as per your case. Maybe someone with expertise can help you. With regards, Ankan

Dear everyone, I ran WRF-Chem successfully with the RADM2-MADE/SORGAM chemistry option (chem_opt=11) using MOZART4 data to include chemical IC/BC in the wrfbdy and wrfinput files. But the MOZART4 data is not available after January 21, 2018. So, to simulate the recent periods, I have to use the...

Dear all, I have a small query regarding the computation of the perturbation in atmospheric variables due to aerosol-cloud interaction (ACI) using the WRF-Chem model. In the case of aerosol-radiation interaction (ARI), the perturbation in atmospheric parameters can be computed by taking the...

Hello all, I want to plot vectors of vertical circulation along the cross-section just like figure_03 shared by @vrojas, but I am getting weird vectors. The details of my problem is posted at the end of the gitub page (Wrong wind direction of vertcross · Issue #143 · NCAR/wrf-python). Can anyone...

Dear @Ming Chen, A screenshot of my domain is attached in the previous message. As you can see, my domain is Indian region including the surrounding Himalayas and ocean region. The values of geopotenial height at 850 hPa are NaN over the Himalayas and some high terrain regions of north-east...

Dear everyone, I want to extract some WRF variables (e.g., Geopotential height, wind variables, etc.) at a specific pressure level (e.g., 850 hPa). For extracting Geopotential Height at 850 hPa, I used the following WRF-Python code: # Extract pressure and z/height variables for time index 0 pres...

Dear all, I used the Goddard scheme for SW Radiation and the RRTMG scheme for LW Radiation while running WRF-Chem using RADM2-MADE/SORGAM chemistry options. I want to calculate the net SW radiative flux in the atmosphere using this formula:ΔFatm = ΔFTOA - ΔFsurf However, I noticed that only the...

Dear @jordanschnell, Thank you so much for your response. I will check then. With regards, Ankan

Dear @jordanschnell, Thank you for providing the formula. My region of interest is Indian region. Do you know any observation or reanalysis dataset of BC concentration for this region? With regards, Ankan

Hi @imy, Did you try after adding &chem mozart_ph_diag=1 in the namelist for your version of WRF-Chem? Please run the model after adding this and let me know if it works or not for your version of WRF-chem. With regards, Ankan

Dear everyone, I have some doubts about the unit conversion of aerosol species. I ran WRF-Chem using the RADM2-MADE/SORGAM chemical mechanism. I viewed the output using the MATLAB command ncdisp. Some portions of the displayed lines are as follows: eci Size: 405x415x34x217...

Hello @k.kedia, No, I haven't been able to solve this problem yet since I didn't get any reply after that (as you can see above). I strongly suspect that there is some bug present in the case of chem_opt=202 that may be related to glyoxal chemistry. Are you performing simulations with WRF-Chem...

Dear everyone, After giving so many test runs, I learned that only by setting 'aer_op_opt = 0' did all the above warning messages and errors vanish. And, the simulation is also going on. I also tried by 'aer_op_opt' to 1, 2, 3, 4, and 5. But none of this worked. I was following the tutorial...

Dear all, I gave a fresh run again but this time I set emiss_opt = 0, bio_emiss_opt = 0, biomass_burn_opt = 0, seas_opt = 0, dust_opt = 0, dmsemis_opt...

Hello @Catalyst26, If this kind of error is coming, then maybe it is related to the date and datesec variables that you have to change. Just look online, and maybe you will find any useful information regarding this that can help you out. Best wishes, Ankan

Hello everyone, I gave a WRF-Chem run of the direct effect using the RADM2-MADE/SORGAM chemistry option. The thing is, the simulation of the parent domain was completed successfully without throwing any errors or warnings. But when I gave a simulation for the nested domain after including...

Hello @Catalyst26, Did you set "data_yrs_offset" to 1? It should work. Best wishes, Ankan

Hello @Catalyst26, First of all, if you are using the EDGAR v5.0 emissions inventory speciated for the MOZART chemical mechanism, then this emission dataset is for the year 2015. So, if your study year is 2016, then 'data_yrs_offset' should be 1. And, 'serial_output' specifies whether or not the...

Hello @bhanubuchi, I haven't considered CBMZ-MOSAIC because of some issues I faced. So, sorry, I can't help you. I suggest that you ask this question as a separate one in this forum. Maybe someone will help you with this. Best wishes, Ankan