Please refer to https://www.arl.noaa.gov/hysplit/cmapf- ... -routines/. The METPOINT program initializes the mapping routine and then converts latitude and longitude to grid indices by calling GBL2XY() or CLLX2XY() depending on the coordinate system and truncating the resulting X, Y coordinates into integers. The source code for the mapping routines including GBL2XY() and others may be downloaded from the website. A detailed description of coordinate transforms is given in an article under Answer #1.
Statistics: Posted by sonny.zinn — June 27th, 2024, 6:45 am