2.2.1 spase://VITMO/NumericalData/TIMED/SEE/L2B_EGS TIMED SEE Level2B EGS Occultations Data 2011-10-21T12:00:00.000 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. 4x per year, in-between direct solar measurements, the SEE instrument has opportunities to observe the solar irradiance transmitted through the atmosphere. The Level 2B EGS Occultation data is time averaged over each measurement and divided by the average of the previous and next solar observations. The EGS resolution is about 0.4 nm, but the data product is sampled at 0.1 nm with valid data ranging from ~27-190 nm. NASA, Thomas N. Woods spase://SMWG/Person/Thomas.N.Woods PrincipalInvestigator L2B EGS Data Information http://lasp.colorado.edu/see/l2b_egs_data_page.html spase://SMWG/Repository/TIMED/SEE_POC Online Open SEE Data Products web page http://lasp.colorado.edu/see/see_data.html This web page allows the request of data files for this product. To request data: for the EGS_2B data type of interest, click the year of interest to go the the ftp directory of files and download the desired day-long file by clicking on it. NetCDF None NASA, Thomas N. Woods Calibrated SEE Level 2B EGS Occultation data Level 2B 10 spase://SMWG/Instrument/TIMED/SEE Irradiance 2002-04-25T00:00:00.000 P2Y Sun TIMED SEE EGS Sun EGS Atmospheric transmission through the tangent ray point TRANSMISSION Atmospheric transmission through the tangent ray point (Note that due to finite and variable instrument precision, this value may exceed 1.) Transmissions are calculated by averaging 6-8 transmission measurements and dividing by the average of approximately 20 direct solar measurements from the previous orbit with 20 additional direct solar measurements from the next orbit. unitless -1 Electromagnetic Wavelength 26.05 194.95 nm