TIMED SEE News

The composite Lyman-alpha time series has been updated to include the latest versions of the TIMED SEE and SORCE SOLSTICE solar irradiance measurements of the bright H I 121.5 nm emission. These TIMED and SORCE data are used in the 2003-present time range and are scaled to match the UARS reference level as discussed by Woods et al. [JGR, 2000]. The composite time series goes back to 1947 using a combination of measurements and modeling results, all referenced to the UARS reference level.

In addition to the new TIMED and SORCE data, the composite Lyman-alpha time series has been updated in the 2001-2003 time frame with just model results. There are some measurements during that time from UARS and TIMED, but degradation issues for both of those instruments in the 2001-2003 time period need to be addressed first.

The composite Lyman-alpha time series is updated daily and available from the SEE web site (http://lasp.colorado.edu/see) and also from the LISIRD web site (http://lasp.colorado.edu/lisird).

SEE Occultation Data Product Released. A new product containing atmospheric transmissions is now available for download via anonymous FTP. This one netcdf file contains the entire set of occultation data for the mission. Transmission measurements made by the TIMED-SEE EGS instrument range from 27-194 nm. The occultation data page has more details. Users are encouraged to view the README file.

SEE Flare Catalog Released. (Release information in PDF) The first version of the TIMED SEE flare catalog has been released and can be found at http://lasp.colorado.edu/see/see_flare_catalog.html. This catalog lists the solar flares that TIMED SEE has observed so far over its 6 years on orbit. Due to SEE's three percent duty cycle (only three minutes of observations every 96-minute orbit), it was originally expected that SEE would only observe about 1-2 GOES X-Class flares per year. SEE actually has measured the irradiance change for almost 100 flares to date, including observations during both the impulsive and gradual phases of the flares. SEE provides unique flare measurements over the entire vacuum ultraviolet (VUV) range from 0.1-193 nm at once, giving a complete spectral picture of the simultaneous increases of emissions formed throughout the solar atmosphere. These emissions range from the hot coronal X-ray ultraviolet (XUV, 0.1-10 nm), to the extreme ultraviolet (EUV, 10-120 nm) emissions that come from the cool corona and transition region, to the far ultraviolet (FUV, 121-193 nm) which are formed mainly in the chromosphere and upper photosphere. More... (~300k PDF)

SEE Version 9 Data Products Released

SEE Team Celebrates Halloween Again

Space Weather Data Products Released

September 17, 2005

Observations of the Sept. 2005 solar storm

June 14, 2005

SEE Version 8 Data Products Released

October 15, 2004

Successful Launch of Woods Rocket Flight - NASA 36.217

• Initial data
• Movies of launch

SEE Version 7 Data Products Released

SEE Team Celebrates 2 Years of Normal Operations

December 2, 2003

View Movie of the October and November Solar Flares

SEE Observes Portion of Largest Flare on Record

SEE Team Celebrates Halloween

SEE Observes Recent Solar Flares

Successful Launch of Woods Rocket Flight - NASA 36.205

SEE Observes X-Class Solar Flares

SEE Version 6 Data Products Released

SEE Observes X-Class Solar Flare

Woods Rocket Flight - NASA 36.192

SEE Begins Normal Operations

TIMED Launch