atmos:citation:research:north_dakota_cloud_modification_project-ndarb-hail_project:testing_wrfv4.0.0_for_ndarb_wrf_runs
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atmos:citation:research:north_dakota_cloud_modification_project-ndarb-hail_project:testing_wrfv4.0.0_for_ndarb_wrf_runs [2024/04/25 17:10] – [Comparing Plots made with WRF 3.7 vs. 4.0] alex.troxel | atmos:citation:research:north_dakota_cloud_modification_project-ndarb-hail_project:testing_wrfv4.0.0_for_ndarb_wrf_runs [2024/05/10 20:42] – [Tips for building WRF] alex.troxel | ||
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- | ===== WRFV3.7 vs WRF4.0 ===== | + | ===== WRFV3.7 vs WRF4.0 |
The following was taken from the README files for each version. Most of the specifics have remained the same but there are two primary differences that are used in 4.0 but not 3.7: the Hybrid-sigma vertical coordinate coordinates and flux-adjusting surface data nudging. | The following was taken from the README files for each version. Most of the specifics have remained the same but there are two primary differences that are used in 4.0 but not 3.7: the Hybrid-sigma vertical coordinate coordinates and flux-adjusting surface data nudging. | ||
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*digital filter initialization | *digital filter initialization | ||
*WENO advection options | *WENO advection options | ||
- | ***WRF4.0 ONLY Hybrid sigma-pressure vertical coordinate (since V3.9)** | + | ***WRF4.0/4.2 ONLY Hybrid sigma-pressure vertical coordinate (since V3.9)** |
**Two-way nesting:** | **Two-way nesting:** | ||
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*observation nudging | *observation nudging | ||
*spectral nudging | *spectral nudging | ||
- | ***WRF4.0 ONLY flux-adjusting surface data nudging** | + | ***WRF4.0/4.2 ONLY flux-adjusting surface data nudging** |
+ | |||
+ | **Thompson Microphysics options: | ||
+ | ***WRF 4.2 ONLY significant alteration is introduced for diagnosing the Y-intercept parameter for the one- | ||
+ | moment graupel. A few adjustments made for rain number concentration tendencies, two of which are bug fixes. | ||
+ | Also a minor adjustment for consistency to minimum cloud ice size in event a balance of ice number is needed. | ||
+ | Lastly a bug fix for partly-melted snow. The most notable changes are: (1) a larger mean rain size from cloud | ||
+ | water to rain autoconversion that helps to produce a stronger leading edge of convective squall lines; (2) | ||
+ | partly-melted snow was falling too rapidly while this fix produces very realistic progression of melting snow | ||
+ | falling gradually toward rain velocity as it melts.** | ||
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- | ====9. Automation==== | ||
- | Within the ' | ||
- | |||
- | */ | ||
- | */ | ||
- | */ | ||
- | */ | ||
- | |||
- | --------------------------------------- | ||
=====Other Information===== | =====Other Information===== | ||
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- | ====Tips for building WRF==== | ||
- | |||
- | *Use the instructions found at https:// | ||
- | *To download files onto a server use the command ' | ||
- | *Always make sure the environmental variables are defined everytime you try to run WRF! | ||
- | *Don't use the command, export PATH=$DIR/ | ||
- | *I used the Linux x86_64 option '32. (Serial)' | ||
- | *A complete guide to WPS's namelist can be found here, https:// | ||
- | *Download WPS so it is in the same directory as WRF. Don't put WPS inside the WRF directory. | ||
- | *If you would like to learn more about WRF, check out this User's Guide, https:// | ||
- | =====Comparing Plots made with WRF 3.7 vs. 4.0===== | ||
atmos/citation/research/north_dakota_cloud_modification_project-ndarb-hail_project/testing_wrfv4.0.0_for_ndarb_wrf_runs.txt · Last modified: 2024/05/10 20:42 by alex.troxel