Direct Access to POES SEM data


These links will take you to all POES SEM data and products which are updated daily.

Jan 18, 2023: NCEI has reorganized the POES-SEM data by processing level and retired the URL satdat.ngdc.noaa.gov. These data are now hosted at this NCEI URL

May 2014: POES radiation belt indices describe the space weather hazard to low Earth orbiting satellites.


Products:
Product type Date range Description
Level 0b - version 1 1978 - 2014 poes_id_YYYYMMDD_raw.bin; Counts, full resolution; Binary format; Discontinued in 2014.
Level 1a 2012 - Present poes_id_YYYYMMDD_raw.nc; Counts, full resolution; NetCDF
Level 1b 2012 - Present poes_id_YYYYMMDD_proc.nc; Fluxes, full resolution; NetCDF (Green [2013a, 2013b, 2013c], Machol [2012])
Level 2 - cdf format 1998 - 2014 poes_id_YYYYMMDD.cdf; 16s averages; Count rates; CDF; SEM-2 Only; Discontinued in 2014.
Level 2 - txt format 1998 - 2014 poes_id_YYYYMMDD.txt; 16s averages; Count rates; ASCII; SEM-2 Only; Discontinued in 2014.
POES Radiation belt indices (beta) 2013 - Present bi_id_YYYY.txt; POES Radiation belt indices (beta)