weiwangncar
commented
1 year ago @jbensabat Please post this question on the Forum: https://forum.mmm.ucar.edu/. It might also help to see tutorial talks on WPS (e.g. https://www2.mmm.ucar.edu/wrf/users/tutorial/tutorial_presentation_winter_2020.htm) or read the Users' Guide (https://www2.mmm.ucar.edu/wrf/users/docs/user_guide_v4/v4.4/users_guide_chap3.html).
Hello I am new to GEOGRID and WRF and I am trying to create a grid and a nested grid with a higher resolution the borders of the low resolution grid depend on the project (obviously). The problem is that I do not see an explanation on how to set the parameters for a specific projection For Example for Israel I use WGS84 with the following data
dx = 1000.0 dy = 1000.0 map_proj = 'mercator', ref_lat = 31.37, // lat of the domain center ref_lon = 34.93, // lon of the domain center truelat1 = 31.7343937, // true latitude of the origin truelat2 = 34.17, // not needed by mercator (according to the doc) stand_lon = 34.93, // suggested by doc to be equal to ref_lon
with these parameters I get that the left corner coordinates of the low resolution grid is different than the WGS84 bound coordinates this creates a problem for properly locating the (i,j) starting point of the child grid
also in this files there 4 coordinates CLONG,CLAT XLAT_C , XLONG_C XLAT_U, XLONG_U XLAT_V, XLONG_V XLAT_M, XLONG_M
Is there any doc explaining the differences and the puporse of these coordinates ? thanks jac