Energetic Electron and Proton data measured by sensors on board Global Positioning Systems (GPS) satellites are hosted by NCEI. Data collected from the past two decades (2000-2023) are publicly available. Both GPS particle sensors Combined X-ray Dosimeter (CXD) and Burst Detection Dosimeter sensors for Block II-R (BDD-IIR) - were developed by Los Alamos National Laboratory to measure:
- Electrons: from 120 keV up to energies greater than 5 MeV with eleven channels (CXD) and from 77 keV to greater than 5 MeV with eight channels (BDD-IIR).
- Protons: from 6 MeV up to energies greater than 75 MeV with five channels (CXD) and from 1.3 MeV to greater than 54 MeV with eight channels (BDD-IIR).
Questions and comments may be directed to ncei.info@noaa.gov.
Data Access
Data files include measurements, derived quantities, and modeled parameters for in situ radiation environment monitoring performed on the Global Positioning System constellation.
GPS Energetic Charged Particle Data (2000–2023)
Documentation
READ ME file: description of the data including file contents and format - ASCII (JSON header)
This data is released to the public by the Intelligence and Space Research Division, Global Security Directorate, LANL through NCEI in accordance with the White House Executive Office 13744 (13 October 2016), “Coordinating Efforts to Prepare the Nation for Space Weather Events” of the President's National Science and Technology Council (NSTC).
Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
