This option can be used to specify the longitude of the location to simulate. (This option only has an effects, if latitude is specified, too.)
longitude deg [min] [sec]
where deg min sec is the position in degrees, arc minutes, and arc seconds east. deg might also be a float number. min and sec may be obmitted. The longitude information will be used for the following:

longitude in combination with latitude, time, and any map-option is used to select the location where to read the input data.

longitude in combination with latitude and time is used to calculate the solar zenith angle, if no sza is specified (see also time_interval).

longitude in combination with latitude and time is used to choose a suitable default atmosphere file, if no atmosphere_file is specified.





Arve Kylling 2010-03-10