Community activities

  • Initiated the RISE (Radiative Inputs of the Sun to Earth) Program at the National Science Foundation to coordinate funding for studies of solar irradiance variation. A first workshop was held at the National Center for Atmospheric Research (NCAR) in Boulder, CO, in 1987. A research plan proposed to the National Science Foundation with a total budget of $11.1M was accepted in 1991 and continued to provide funding through 2004. A key part of RISE was a network of Precision Solar Photometric Telescopes (PSPT’s). One (see figure at right) has been operated at Mauna Loa, Hawaii, since 1998 by the High Altitude Observatory of NCAR.

RISE Cover
Advances Telescope
  • Organized the first workshop on “Advances in Absolute Radiometry” in Cambridge, Massachusetts in June 1985. This brought together about 35 laboratory metrologists and solar and atmospheric physicists from around the world. Later namedĀ  “NewRad”, it has since become the premier international radiometry meeting, attracting over 200 participants triennially to host national labs like NIST, NPL and PTB. The most recent NewRad was held virtually in Boulder, Colorado in June 2021.

  • Organized numerous workshops and special sessions of the Solar Physics Division of the American Astronomical Society (including the first AAS poster session, at the 1977 meeting inĀ  Atlanta, GA), and of the American Geophysical Union.

  • Served as President of Division 2 of the International Astronomical Union and as member or chairman of numerous panels and committees of the National Academy of Science (NAS), NSF and NASA.