Hi all! I am interested in using the tracer_opt = 2 in WRF to eventually model the emissions of a custom aerosol. I have been using WRFv4.7.1 with WPSv4.6.0, but have come across the same error in WRFv4.3.3 with WPSv4.3.1, so I don't believe that it is a version issue.
I have been able to successfully run WRF without setting tracer_opt = 2. Since I am just doing a test case, I did not add any new tracers (i.e., I am only using the tr17_1, tr17_2, etc. tracers that are already within the tracer_opt = 2 package in Registry.EM). I did not modify module_initialize_real.F, since there is already a template present in that file for an 8x8 grid for tracers tr17_1 through 4.
This version of WRF is compiled with WRF_CHEM == 1, since that is recommended for tracer runs past WRFV3.2, but no chemistry options were enabled. When I run with tracer_opt = 2, though, I get an error opening the auxinput5 file-- I believe this is for anthropogenic emissions, which I have not enabled. To my knowledge, tracer_opt should be able to work independently of the chem_opt choice (0, in my case). I have also tried running specifying io_style_emissions and emiss_opt = 0 to disable emissions (same error). I am asking for advice on troubleshooting this error, but I also have the following questions if they are able to be answered:
I have been able to successfully run WRF without setting tracer_opt = 2. Since I am just doing a test case, I did not add any new tracers (i.e., I am only using the tr17_1, tr17_2, etc. tracers that are already within the tracer_opt = 2 package in Registry.EM). I did not modify module_initialize_real.F, since there is already a template present in that file for an 8x8 grid for tracers tr17_1 through 4.
This version of WRF is compiled with WRF_CHEM == 1, since that is recommended for tracer runs past WRFV3.2, but no chemistry options were enabled. When I run with tracer_opt = 2, though, I get an error opening the auxinput5 file-- I believe this is for anthropogenic emissions, which I have not enabled. To my knowledge, tracer_opt should be able to work independently of the chem_opt choice (0, in my case). I have also tried running specifying io_style_emissions and emiss_opt = 0 to disable emissions (same error). I am asking for advice on troubleshooting this error, but I also have the following questions if they are able to be answered:
- Does setting tracer_opt > 1 require the simulation to be run with WRF-Chem? I am compiled with WRF_CHEM, but I was running without chemistry as it was a test option (and I hope to eventually use my own emissions inventory to guide the release of tracers).
- Does auxinput5 influence non-smoke tracer emissions?
- If I must run with WRF-Chem, can I use my own static netCDF emissions inventories to guide tracer emissions?