Lim Hwee San is a lecturer at the school of physics, University Sains Malaysia, teaching courses in meteorology, geophysics and remote sensing. He obtained his B.Sc. from USM in Geophysics in 2001 and M.Sc. from USM in remote sensing in 2003. He obtained his Ph.D in environmental remote sensing from USM in 2006. His research interests are generally in the field of optical remote sensing - both passive and active - and digital image processing, particularly as it applies to spectral image data. In both cases, the primary applications are water quality monitoring, air quality monitoring, land cover/change detection, land surface properties and digital images classification. He has published more than 200 articles in these areas. He is a Member of the International Society for Optical Engineering, US.