WRF
Special thanks to Cindy Bruyere of NCAR/MMM for her development of the WRF-NCL visualization scripts, and to her and Soyoung Ha, also of NCAR/MMM, for the addition, overhaul, and extensive testing of the WRF-NCL analysis scripts.Some of the functions below are built into NCL, while some of them are part of the WRFUserARW.ncl script, which is a library of functions and procedures written to help users plot ARW WRF model data.
Note: in most of the WRF data analysis functions (unless otherwise
specified), if any of the input arrays contain missing data, then the
function will take the missing data as regular values. Please confirm
that the input variable has no missing data with
More information on using NCL with ARW WRF is available from the ARW WRF Users Web site at http://www.mmm.ucar.edu/wrf/OnLineTutorial/Graphics/NCL/.
WRF-related questions should be sent to wrfhelp@ucar.edu.
| wrf_avo | Calculates absolute vorticity from WRF model output. |
| wrf_cape_2d | Computes maximum convective available potential energy (CAPE), maximum convective inhibition (CIN), lifted condensation level (LCL), and level of free convection (LFC). |
| wrf_cape_3d | Computes convective available potential energy (CAPE) and convective inhibition (CIN). |
| wrf_contour | Creates a contour plot from ARW WRF model output. |
| wrf_dbz | Calculates simulated equivalent radar reflectivity factor [dBZ] from WRF model output. |
| wrf_eth | Calculates equivalent potential temperature from WRF model output. |
| wrf_helicity | Calculates storm relative helicity from WRF model output. |
| wrf_ij_to_ll | Finds the nearest longitude, latitude locations to the specified model grid indices (i,j). |
| wrf_interp_1d | Linearly interpolates a one-dimensional variable in the vertical. |
| wrf_interp_2d_xy | Extracts a cross section from a given input field. |
| wrf_interp_3d_z | Interpolates to a specified pressure/height level. |
| wrf_latlon_to_ij | Finds the nearest model grid indices (i,j) to the specific location(s) in latitude and longitude (deprecated). |
| wrf_ll_to_ij | Finds the nearest model grid indices (i,j) to the specified location(s) in longitude and latitude. |
| wrf_map | Creates a map background for ARW WRF model data. |
| wrf_map_overlay | Overlays different plot id's over a map background (deprecated in version 5.1.0). |
| wrf_map_overlays | Overlays different contour and vector plots over a WRF-ARW map background. |
| wrf_map_zoom | Zooms into a portion of the ARW WRF model domain, and creates a map background (deprecated in version 5.1.0). |
| wrf_mapres_c | Sets the appropriate geographical mapping resources based upon WRF file contents. |
| wrf_overlay | Overlays multiple plots, created from other ARW WRF plot functions (deprecated in version 5.1.0). |
| wrf_overlays | Overlays multiple plots, created from other ARW WRF plot functions. |
| wrf_pvo | Calculates potential vorticity from WRF model output. |
| wrf_rh | Calculates relative humidity from ARW WRF model output. |
| wrf_slp | Calculates sea level pressure from ARW WRF model output. |
| wrf_smooth_2d | Smooths a given field. |
| wrf_td | Calculates dewpoint temperature in [C] from ARW WRF model output. |
| wrf_times_c | Converts WRF variable "Times" which is of type character to user specified numeric units. |
| wrf_tk | Calculates temperature in [K] from ARW WRF model output. |
| wrf_updraft_helicity | Calculates updraft helicity from WRF model output. |
| wrf_user_getvar | Extracts data from ARW WRF model output, and does basic diagnostics calculations. |
| wrf_user_ij_to_ll | Finds the nearest longitude, latitude locations to the specified model grid indices (i,j). |
| wrf_user_intrp2d | Interpolates ARW WRF 2D model data along a give line. |
| wrf_user_intrp3d | Interpolates ARW WRF model data vertically or horizontally. |
| wrf_user_latlon_to_ij | Finds the nearest model grid indices (i,j) to the specific location (deprecated). |
| wrf_user_list_times | Extracts the list of available times in the ARW WRF model output. |
| wrf_user_ll_to_ij | Finds the nearest model grid indices (i,j) to the specified location(s) in longitude and latitude. |
| wrf_user_unstagger | Unstaggers an input variable along a specified dimension. |
| wrf_uvmet | Rotates u,v components of the wind to earth coordinates. |
| wrf_vector | Creates a vector plot from ARW WRF model output. |