Software Version 4AOP2009v1.0 released Date: 2009, September What is new in 4AOP2009: Implementation of the limb viewing geometry:Refined geometry moduleOption for limb view simulationHeight dependence of gravity accelerationImplementation of the user…

Software Version 4AOP2012v1.0 released Date: 2012, March What is new since 4AOP2009v1.2: Added user option to simulate scattering effects of clouds (cirrus…)New atlases of pre-calculated optical thicknesses that include:an improvement for…

Software Version 4AOP2009v1.2 released Date: 2010, March What is new since 4AOP2009v1.0: Minor bug fixes in a few routines of the model and of the GUI and in the user installation…