Rendering time: 08h 03m 45s

Command line parameters: `terra 640x480 T-a30-H3km-D3E-3-S1E-4.tga,1.2 . AR/NR azim=240 altit=30 height=3km X=-2702km Y=1574km upangle=+8 leftangle=-40 angle=50 atm clouds land nostars ASA=50 atm::density=8E-6 atm::steamness=1 atm::steps=-19 atm::extension=5 atm::steamgradient=6 clouds::low=4km clouds::high=5km clouds::density=3E-3 'clouds::scale=(1E-4,1E-4,1E-4)' clouds::octaves=3 stars::I0=200 stars::hw=1 EARTH::R=.4 EARTH::G=.4 EARTH::B=.4 time=1.5 '

A smaller scale length gives bigger clouds. This is quite senseful for night images.