1. Remote Sensing Division; Naval Research Laboratory; Washington D. C. USA
2. Computational Physics, Inc.; Springfield Virginia USA
3. Jet Propulsion Laboratory; California Institute of Technology; Pasadena California USA
4. Cooperative Institute for Research in Environmental Sciences; University of Colorado; Boulder Colorado USA
5. Department of Chemistry; University of Waterloo; Waterloo Ontario Canada
6. Karlsruhe Institute of Technology; Institute for Meteorology and Climate Research; Karlsruhe Germany