Monthly Newsletter

July 2003

The scientific organizing committee members are Judith Lean from NRL, Peter Pilewskie from NASA Ames Research Center, and Doug Rabin from GSFC. They are putting together an exciting agenda and everyone anticipates a very interesting meeting. We encourage your attendance and hope that you will share this announcement with colleagues. It is available with additional information on the SORCE website at Dec03ScienceMeeting.html
Complete meeting information will be available in early August and will include an agenda, abstract forms, registration forms, and meeting logistics. The final meeting announcement will be distributed by e-mail and on the SORCE website. For additional information, contact Vanessa George at

Special Session at AGU Meeting –
A special session relevant to SORCE has been accepted for the AGU Fall Meeting in San Francisco, December 8-12. Falling under the Solar and Heliospheric Physics (SPA) section, the session (SH09) is called The Sun’s Spectrum and Life on Earth. Conveners are Gary Rottman (LASP, SORCE Principal Investigator), Robert Cahalan (NASA GSFC, SORCE Project Scientist), and Judith Lean (NRL, SORCE Co-Investigator). Following is the abstract for this session.
Earth receives its primary energy from the Sun in the form of electromagnetic radiation that spans a wide range of wavelengths, from the ultraviolet to the infrared. The atmosphere, surface and oceans transmit, absorb, reflect and scatter this radiation in different ways depending on wavelength. Changes in the Sun’s radiation spectrum, whose integral defines the total solar irradiance, are potential causes of climate and global change via radiative and dynamical processes that may include direct surface heating, altered circulation patterns and cloud formation, modulation of ozone and the North Atlantic oscillation. As a result, understanding and modeling a multitude of terrestrial processes and their temporal variations depend upon reliable knowledge of the Sun’s spectrum and its variability. A new generation of instrumentation that includes, for the first time, the capability to measure the entire solar spectral irradiance simultaneously with total irradiance, was launched recently on the Solar Radiation and Climate Experiment (SORCE). NPOESS will continue operational measurements of TSI including the new spectral capability, but

not before 2012. One aim of this session is to convey the new solar spectrum and variability results emerging from SORCE, in the context of lessons learned from past and on-going solar monitoring, and future needs. Equally important, the session aims to bring together research from a wide variety of disciplines, which require precise solar spectrum measurements.
If you are interested in submitting a paper to this session, AGU abstract submission forms will be available by August 1. For more information, the upcoming AGU Fall Meeting website is You can also reach the AGU Meetings Department by calling 1-800-966-2481, ext. 333 or by e-mailing

Upcoming Meetings
SORCE scientists plan to present papers or attend the following 2003 meetings:

  • IUGG Assembly 2003, June 30-July 11, Sapporo, Japan
  • Intl. Geoscience and Remote Sensing Symposium, July 21-25, Toulouse, France
  • SPIE - Optical Science and Technology, Aug. 3-8, San Diego, California
  • Characterization and Radiometric Calibration for Remote Sensing, Sept. 15-18, Logan, Utah
  • SORCE Science Team Meeting, Dec. 4-6, Sonoma, California
  • AGU Fall Meeting, Dec. 8-12, San Francisco, California

To submit information to this newsletter, please contact:

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