WRF
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
Help on using NCL with ARW WRF is available from the user forum at:
http://forum.mmm.ucar.edu/phpBB3/viewforum.php?f=49
| 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) (deprecated). |
| 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 (deprecated). |
| wrf_map | Creates a map background for ARW WRF model data. |
| wrf_map_overlay | Overlays WRF plot(s) on a WRF-ARW map background (deprecated). |
| wrf_map_overlays | Overlays contour and vector plots on a WRF-ARW map background. |
| wrf_map_resources | Sets map plotting resources based on an input WRF-ARW file. |
| wrf_map_zoom | Zooms into a portion of the ARW WRF model domain, and creates a map background (deprecated). |
| wrf_mapres_c | Sets the appropriate geographical mapping resources based upon WRF file contents. (deprecated) |
| wrf_omega | Calculates approximate omega in C, given vertical velocity, water vapor mixing ratio, temperature, and pressure from WRF model output. |
| wrf_overlay | Overlays multiple plots created from other WRF-ARW plot functions (deprecated). |
| 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 WRF-ARW model grid indexes (deprecated). |
| wrf_user_interp_level | Interpolates a horizontal slice from a three-dimensional WRF-ARW field at the given vertical level(s). |
| wrf_user_interp_line | Interpolates a two-dimensional WRF-ARW field along a line. |
| wrf_user_intrp2d | Interpolates ARW WRF 2D model data along a given line (deprecated). |
| wrf_user_intrp3d | Interpolates ARW WRF model data vertically or horizontally (deprecated). |
| wrf_user_latlon_to_ij | Finds the nearest WRF-ARW model grid indexes (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 WRF-ARW model grid indexes (i,j) to the requested longitude and latitude locations (deprecated). |
| wrf_user_ll_to_xy | Finds the nearest WRF-ARW model grid indexes (0-based) that are the closest to the requested longitude and latitude locations. |
| wrf_user_unstagger | Unstaggers an input variable along a specified dimension. |
| wrf_user_vert_cross | Interpolates a vertical cross-section from a three-dimensional WRF-ARW field at the given vertical level(s). |
| wrf_user_vert_interp | Vertically interpolates ARW WRF variables given the type of surface and a set of new levels. |
| wrf_user_xy_to_ll | Finds the nearest longitude, latitude locations to the specified WRF-ARW model grid indexes. |
| wrf_uvmet | Rotates u,v components of the wind to earth coordinates. |
| wrf_vector | Creates a vector plot from ARW WRF model output. |
| wrf_virtual_temp | Calculates virtual temperature, given temperature and mixing ratio from WRF model output. |
| wrf_wetbulb | Calculates wet bulb temperature in K, given pressure in temperature in K and mixing ratio in kg/kg from WRF model output. |
| wrf_wps_close_int | Closes a currently open WPS intermediate file. |
| wrf_wps_open_int | Opens a WPS intermediate file and returns a status. |
| wrf_wps_rddata_int | Reads a 2D field from an open WPS intermediate file. |
| wrf_wps_rdhead_int | Reads header information for the current field of an open WPS intermediate file. |
| wrf_wps_read_int | Reads data from a WPS intermediate file. |
| wrf_wps_write_int | Writes data to a WPS intermediate file. |