November 21, 2007 Space Weather Prediction Center (SWPC) GOES Energetic Particle and Electron Flux Data Lists =========================================================================== No GOES-10 X-ray and Proton Data for 6-8 Weeks November 21, 2007 -- GOES-10, the SWPC secondary GOES Satellite for X-ray and Proton data, is not being tracked at SWPC due to an antenna problem. GOES-10 data lists will continue to be written with missing data values. GOES-10 satellite tracking at SWPC is expected to resume in 6 to 8 weeks (January 2-16). =========================================================================== This directory contains GOES Energetic Particle and Electron Flux Data Lists with 5-min data for the SEC primary and secondary GOES satellites. Currently, for Energetic Particles, the primary and secondary satellites are GOES 11 and 10. For Electron Flux, the primary and secondary satellites are GOES 12 and 11. Therefore, data lists for GOES 12, 11, and 10 are now available. The files are updated every 5-minutes. Files with no date in the filename contain data for the last 2-hours. Users retrieving data frequently are asked to use these files. The daily files are named with the UT day of the data and the GOES satellite, i.e G12 refers to GOES 12. The file format follows a standard data list conventions where header lines start with either # or :. Date/times Dates are shown as year month day (2006 02 06) and an SWPC "Modified Julian Day (MJD). The SWPC MJD for Jan 1, 2004 is 53005 Time is shown as HourMin (1900) and seconds of the day (68400) See http://www.swpc.noaa.gov/Data/goes.html the SWPC GOES Satellite News web page GOES data are archived at the National Geophysical Data Center http://www.ngdc.noaa.gov/stp ****************************************************************** ** Please read the SWPC Disclaimer at http://www.swpc.noaa.gov/ ** ****************************************************************** SWPC provides near-real-time and recent data, solar and geomagnetic indices and solar event reports created from preliminary reports. Preliminary data may contain errors or be revised after further review. The historical products in this SWPC Warehouse are the preliminary reports as originally published. SWPC does not encourage the use of preliminary data for research purposes. Links to on-line data at SWPC and archive sites with final data: http://www.swpc.noaa.gov/Data/ ****************************************************************** Please send comments and questions to SWPC.Webmaster@noaa.gov Report problems to SWPC.CustomerSupport@noaa.gov ======================================================================== ======================================================================== OLD NOTICES ======================================================================== GOES 10 Energetic Proton Outages Expected June 26, 2006 -- GOES 10, SEC's secondary GOES satellite for energetic protons, will not be available at SEC for about two weeks beginning on June 23, because its telemetry frequency will be changed to avoid conflicting with GOES 11 transmissions. There will be two additional periods (approximately 10 - 14 days) when GOES 10 data will not be available, as GOES 10 drifts past GOES 13 and GOES 12. GOES 11, the primary SEC GOES satellite for Energetic Protons will be available throughout the GOES 10 outages. ======================================================================== SEC Secondary GOES Spacecraft Change At 1400UT, June 22, 2006 the SEC secondary GOES satellite for magnetometer, X-ray, and electron measurements changed from GOES 10 to GOES 11. GOES 12 remains the primary SEC GOES satellite. For energetic proton measurements there was no change; GOES 11 remains the primary SEC GOES satellite and GOES 10 the secondary. ======================================================================== June 19, 2003 -- To ensure continued operational monitoring of important energetic particle data, it is necessary to reassign primary/secondary designations for the GOES Space Environment Monitor (SEM) detectors. Beginning 1700 UTC on June 19, GOES 11 (105W) will become the primary satellite for protons. GOES 12 (75W) will continue as the primary satellite for magnetometer, X-ray, and electron measurements. GOES 10 (135W) will be the secondary satellite for all SEM sensors - magnetometer, X-ray, and energetic particles. Because of the degraded state of the proton data on GOES-10, its designation as the secondary source for proton data is a short-term solution. More permanent solutions have been identified and are being evaluated. Users will be notified when we define and schedule a permanent fix. ======================================================================== GOES 12/10 Designated SEC's Primary/Secondary GOES Satellites GOES 8 energetic protons available again May 15, 2003 -- GOES 12 is now SEC's primary GOES satellite, except for energetic proton detectors where GOES 8 is primary. GOES 10 is the backup. The GOES 10 energetic proton detectors are showing intermittent, high noise levels in the higher energy proton channels (greater than about 80 MeV). This problem was first noticed in data taken April 26, 2003 This pattern is similar to problems experienced on the GOES 12 EPS Dome detector prior its P6 and P7 channel failures earlier this year. The loss of the P6 and P7 channels significantly impacts SEC's integral proton flux products above about 10 MeV (e.g., >10 MeV, >50 MeV, and >100 MeV). Therefore, we are acquiring energetic proton data from old GOES 8 satellite. GOES 8 differential proton flux and integral proton flux data are available in the /lists/pchan and /lists/particle directories. GOES 8 is used in Proton Flux plots. The electron processing algorithm has been modified in response to the high noise level that recently developed in the GOES 12, P6 proton channel. Caution should be used when interpreting the GOES-10 and 12 energetic proton data. One indication of the presence of high noise levels in the absence of a true enhancement in the proton flux is that all of the integral flux products above about 10 MeV (e.g., >10 MeV, >50 MeV, and >100 MeV) show nearly equal values, due to the fact that all of these derived integral fluxes are being dominated by the same high noise levels in the highest energy measurements. ====================================================================== !!!!! NOTICE GOES Satellite Changes !!!!! !!!!! GOES 8 Ends, GOES 12 Begins !!!!! April 8, 2003 SEC stopped using GOES 8 data. GOES 10 is now SEC's primary GOES satellite, with GOES 12 the backup for magnetometer, XRS x-ray measurements, and energetic particle data. SEC tracks two GOES satellites and designates one as the primary and the other the secondary GOES satellite. With the switch from GOES 8 to GOES 12, the primary/secondary designations will change. GOES 10 will be the primary satellite and GOES 12 the secondary for magnetometer, XRS x-ray measurements, and energetic particles. This includes all of the GOES electron, proton, and alpha particle data. However, due to the failure of the P6 and P7 proton channels on GOES 12, no GOES 12 Intergral Proton or Electron Flux data is available. Users should be aware that GOES 10 data differ somewhat from GOES 8 data in two ways. First, the energetic particle detectors that are used for our operational products have a westward look direction on GOES 8 as opposed to an eastward look direction on GOES 10. Because of the different look directions, the flux measurements can differ during energetic particle events. The general flux profiles throughout particle events are similar in the GOES 8 and GOES 10 measurements; however, the GOES 10 measurements on average tend to show somewhat lower flux levels. For the largest events, the event starting times, peak flux levels, and times of the peak fluxes are similar. The electron measurements also differ somewhat between GOES 8 and GOES 10. This difference is due to the different geomagnetic latitudes of the two spacecraft. Both GOES 8 and GOES 10 are located on the geographic equator, but due to the tilt of Earth's dipole magnetic field, GOES 10 (at 135 degrees west longitude) is at a lower geomagnetic latitude than GOES 8 (at 75 degrees west longitude). Because of the different geomagnetic latitudes, GOES 10 on average measures a slightly larger electron flux than GOES 8. The relative variations in flux from time to time are roughly similar at the two spacecraft locations. ==============================================================================