This is a collection of nice sites that allow you to do online calculation about aerosols and clouds.
- University of Manchester, Multiphase system online property prediction
http://umansysprop.seaes.manchester.ac.uk/ - Harvard University, Single particle calculator
http://aerosolcalculator.seas.harvard.edu/webMathematica/SingleParticle.jsp - Harvard University, Particle Population
http://aerosolcalculator.seas.harvard.edu/webMathematica/ParticlePopulation.jsp - University of East Anglia, Aerosol Inorganics Model
http://www.aim.env.uea.ac.uk/aim/aim.php - Online Mie calculator
http://omlc.org/software/mie/ - Another online Mie Calculator
http://www.lightscattering.de/MieCalc/ - Nice set of tools in Python to run a cloud parcel model
http://web.mit.edu/~darothen/parcel_model/index.html - Sun position in the sky
https://www.sunearthtools.com/dp/tools/pos_sun.php