Professor Benjamin Herman, PhD (deceased, 2018) was an Advisor to TI/IFAORS for many years, and presented popular Taksha seminars on Fundamentals of Atmospheric Radiation. After completing his PhD at the University of Arizona in 1963, his early research focused largely on the field of radiative transfer and the development of a radiative transfer code that included all orders of scattering, polarization, Mie as well as molecules, and absorption and emission.
Prof. Herman later played a role in developing software for the SAM-SAGE series of satellites to convert solar occultation measurements into vertical profiles of atmospheric aerosols, ozone, and water vapor, as well as the ozone monitoring satellites (TOMS) which used the spherical atmosphere geometry to help understand the corrections necessary in polar regions to accommodate the regions’ very low solar elevation angles.
More recently, Prof. Herman participated in the GPS/MET project, demonstrating how GPS measurements as made by a space-borne receiver could use special inversion techniques to recover vertical profiles of atmospheric temperature, density, and pressure, and with certain assumptions or additional data, water vapor profiles could also be recovered.
Prof. Herman retired in 2005 from the Faculty of the University’s Department of Atmospheric Science, but remained active in research and teaching.