2.7.1 https://spdx.org/licenses/ SPDX CC0-1.0 https://spdx.org/licenses/CC0-1.0.html Creative Commons Zero v1.0 Universal CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions spase://NASA/NumericalData/TIMED/SEE/L2A_XPS NASA NumericalData TIMED SEE Level2A XPS Solar Irradiance Data 2025-12-04T13:32:06Z 2020-07-07T21:15:38Z Only known prior ReleaseDate of the metadata 2025-11-14T16:01:52Z Added PublicationInfo. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB 2025-12-04T13:32:06Z Added MetadataRightsList. Updated to 2.7.1. ZCB 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 (more info on XP coatings) and one other XP provides a hydrogen Lyman-alpha measurement (121.5 nm). The XPS Level 2A data is time averaged over each measurement, after being 1-AU corrected and removing flares. The 1-AU correction is provided. NASA, Thomas N. Woods Woods, Thomas N. 2025-11-14T16:01:52Z Johns Hopkins University Applied Physics Laboratory spase://SMWG/Person/Thomas.N.Woods PrincipalInvestigator L2A XPS Data Information http://lasp.colorado.edu/home/see/data/observational-averages/level-2a-xps/ spase://VITMO/NumericalData/TIMED/SEE/L2A_XPS spase://VSPO/NumericalData/TIMED/SEE/L2A_XPS spase://SMWG/Repository/TIMED/SEE_POC Online Open SEE Data Products web page http://lasp.colorado.edu/home/see/data/ This web page allows the request of data files for this product. To request data: for the XPS_2A 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 2A XPS Solar Irradiance data Level 2 10 spase://SMWG/Instrument/TIMED/SEE Irradiance 2002-01-22T00:00:00.000 P2D Sun TIMED SEE XPS Sun Date of observation DATE Date of observation YYYY-DOY 53 Dimensions: [Number_of_elements] - where Number_of_elements is the number of elements in the file. Other Channel index of the 12 XUV Photometers (1-12) CHANNEL Channel index of the 12 XUV Photometers (1-12) none 53 Dimensions: [Number_of_elements] - where Number_of_elements is the number of elements in the file. Other Bandpass wavelength range WAVE Bandpass wavelength range nm 53 2 Dimensions: [Number_of_elements, Number_of_wavelength_intervals] - where Number_of_elements is the number of elements in the file, and Number_of_wavelength_intervals is the number of wavelength intervals. Other XPS median solar irradiance FLUX_MEDIAN Solar irradiance - median for the day W / m^2 53 Dimensions: [Number_of_elements] - where Number_of_elements is the number of elements in the file. Electromagnetic Wavelength 0.1 122.0 nm Channel 1: Ti/C-14 coating 0.1 7 Channel 2: Ti/C-10 coating 0.1 7 Channel 3: Al/Sc/C-24 coating 17 23 Channel 5: Ti/Pd-17 coating 0.1 10 Channel 6: Ti/Zr/Au-04 coating 0.1 10 Channel 7: Al/Nb/C-03 coating 17 21 Channel 9: Al/Mn-06 coating 0.1 7 Channel 10: Cr/Al-07 coating 0.1 7.0 Channel : Lyman-alpha 121 122 Accuracy of solar irradiance averaged over the day ERR_TOT Accuracy of solar irradiance averaged over the day Fractional 53 Dimensions: [Number_of_elements] - where Number_of_elements is the number of elements in the file. Other Measurement precision averaged over the day ERR_MEAS Measurement precision averaged over the day Fractional 53 Dimensions: [Number_of_elements] - where Number_of_elements is the number of elements in the file. Other Standard deviation of median for good measurements STDEV_MEAS Standard deviation of median for good measurements Fractional 53 Dimensions: [Number_of_elements] - where Number_of_elements is the number of elements in the file. Other AU correction factor for date COR_1AU AU correction factor for date 1 / (AU^2) 53 Dimensions: [Number_of_elements] - where Number_of_elements is the number of elements in the file. Other Median of Total-Dark-Visible currents from level 1 with FOV and 1-AU corrections applied CURRENT Median of Total-Dark-Visible currents from level 1 with FOV and 1-AU corrections applied nanoAmps 53 Dimensions: [Number_of_elements] - where Number_of_elements is the number of elements in the file. Other Number of measurements used in daily average NUMPT Number of measurements used in daily average none 53 Dimensions: [Number_of_elements] - where Number_of_elements is the number of elements in the file. Other 0 means XPS measures flux greater than 3-sigma above the GOES XRS long channel correlation, 1 means the XPS is within 3-sigma of the expected value, 2 is indeterminate due to a lack of available GOES long channel correlation data QUALITY_FLAGS 0 means XPS measures flux greater than 3-sigma above the GOES XRS long channel correlation, 1 means the XPS is within 3-sigma of the expected value, 2 is indeterminate due to a lack of available GOES long channel correlation data none 53 Dimensions: [Number_of_elements] - where Number_of_elements is the number of elements in the file. Other Memory address of command, valid from 1-254 ODC_ID Memory address of command, valid from 1-254 none 53 Dimensions: [Number_of_elements] - where Number_of_elements is the number of elements in the file. Other UT time in seconds of day for start integration used in observation START_TIME UT time in seconds of day for start integration used in observation Seconds 53 Dimensions: [Number_of_elements] - where Number_of_elements is the number of elements in the file. Other UT time in seconds of day for the end integration used in observation STOP_TIME UT time in seconds of day for the end integration used in observation Seconds 53 Dimensions: [Number_of_elements] - where Number_of_elements is the number of elements in the file. Other Ratio of observation flux_median to daily flux_median FLARE Ratio of observation flux_median to daily flux_median none 53 Dimensions: [Number_of_elements] - where Number_of_elements is the number of elements in the file. Other