For any lat-lon coordinates input to Smkinven (point-source locations, link coordinates, and area-to-point coordinates), SMOKE can optionally ensure that the longitude values are in the Western Hemisphere. In some cases, the data prepared for input to SMOKE do not contain the negative sign on the longitude value that indicates the Western Hemisphere. If the modeling domain is in the Western Hemisphere, then Smkinven will convert all positive longitudes to negative ones when the WEST_HSPHERE option is set to Y.