Solar Radiation and Climate Experiment

Project Description
The Solar Radiation and Climate Experiment (SORCE) is a NASA-sponsored
satellite mission that will provide state-of-the-art measurements of
incoming x-ray, ultraviolet, visible, near-infared, and total solar
radiation. The measurements provided by SORCE specifically address
long-term climate change, natural variability and enhanced climate
prediction, and atmospheric ozone and UV-B radiation. These
measurements are critical to studies of the Sun; its effect on our
Earth system; and its influence on humankind.

SORCE was successfully launched on January 25, 2003 on a Pegasus XL
launch vehicle to provide NASA's Earth Science Enterprise (ESE) with
precise measurements of solar radiation. It was launched into a 645
km, 40 degree orbit and will be operated by the Laboratory for
Atmospheric and Space Physics (LASP) at the University of Colorado
(CU) in Boulder, Colorado, USA. It will continue the precise
measurements of total solar irradiance (TSI) that began with the ERB
instrument in 1979 and has continued to the present with the ACRIM
series of measurements. SORCE will also provide the measurements of
the solar spectral irradiance from 1nm to 2000nm, accounting for 95%
of the spectral contribution to TSI. SORCE will carry four instruments
including the Total Irradiance Monitor (TIM), Solar Stellar Irradiance
Comparison Experiment (SOLSTICE), Spectral Irradiance Monitor (SIM),
and the XUV Photometer System (XPS).

For more information, see:

For more information on the Earth Observing System, see: