Solar EUV Experiment (SEE) Data from the Thermosphere, Ionosphere, Mesosphere Energetics and Dynamics (TIMED) Mission

The Solar EUV Experiment (SEE) is one of four instruments that
constitute the TIMED spacecraft, the first mission of the NASA Solar
Connections program.

All SEE data products contain daily averaged solar irradiance data
with corrections applied for degradation, 1-AU, and atmospheric
absorption.

The SEE Level 2 data contains EGS and XPS solar irradiance data
averaged over the entire day, after being 1-AU corrected and removing
flares.

The EUV Grating Spectrograph (EGS) aboard SEE performs measurements of
the Sun for about 3 minutes every orbit (97 minutes) which usually
gives 14-15 measurements per day. The Level 2 data is time averaged
over the entire day, after being 1-AU corrected and removing
flares. The 1-AU correction is provided.

The 12 X-Ray Photometers (XP) aboard SEE perform full-disk irradiance
measurements of the Sun for about 3 minutes every orbit (97 minutes)
which usually gives 14-15 measurements per day. 8 of the XPs produce
XUV signals and one other XP provides a hydrogen Lyman-alpha
measurement (121.5 nm). The XPS Level 2 data is time averaged over the
entire day, after being 1-AU corrected and removing flares. The 1-AU
correction is provided.

SEE Level 3 data files contain one daily averaged solar irradiance
spectrum in 1 nm intervals extracted from the EGS Level 2 and XPS
Level 2 data products. Shortware of 27 nm, a solar model is scaled to
match the XPS broadband data. SEE Level 3 data files also contain 38
emission lines extracted from EGS Level 2 spectra, and the XPS Level 2
diode irradiances.

See http://lasp.colorado.edu/see/