Dr. Paul Swarztrauber passed away in Boulder, Colorado on August 8, 2011. He was known internationally, having made invited presentations to universities and computing research centers in several countries. During his 41-year career at the National Center for Atmospheric Research, he emphasized computer-aided weather and climate prediction. Math libraries fishpack, fftpack, and spherepack demonstrate this emphasis, as do his 60+ journal articles. He worked with numerous scientists and numerical analysts, and mentored several mathematicians in their early careers. Aside from these efforts, Paul developed parallel communication algorithms on various network topologies, particularly for FFTs and array transpose. He holds two US patents on the "Communication Machine", which orchestrates communication between an unlimited number of processors. He continued his academic and technical interests until the very end of his life. You may visit his full obituary and publication list at these sites http://www.dailycamera.com/obits/ci_18708995 and http://www.cisl.ucar.edu/css/staff/pauls/papers/pubs.ps. A memorial service and celebration of Paul's life will be held at the NCAR Mesa Lab on Sunday, 18 September, 2-5 PM.