Close colleagues at UMD include: Dale Allen, Asst. Research Scientist. allen@atmos.umd.edu John Burrows, Adjunct Professor (U Bremen). burrows@iup.physik.uni-bremen.de Timothy Canty, Assoc. Research Professor. canty@atmos.umd.edu Bruce Doddridge, Adjunct Professor. bruce@atmos.umd.edu Robert Hudson, Professor Emeritus. hudson@atmos.umd.edu Hao He, Asst. Research Professor. haohe@atmos.umd.edu Ken Pickering, Research Professor. pickering@atmos.umd.edu Ross Salawitch, Professor. rsalawit@umd.edu Xinrong Ren, Research Scientist. xinrong.ren@noaa.gov Anne Thompson, Adjunct Professor (PSU) anne.m.thompson@nasa.gov