The Solar Energetic Proton Flux tool
The Solar Energetic Proton Flux (SEPF) tool provides solar energetic proton fluxes at various locations in space using the count-rate measurements of the ESA Standard Radiation Environment Monitor (SREM) units on-board INTEGRAL, Herschel, Planck, and Rosetta spacecraft. The SEPF tool downloads SREM data, calculates the differential proton fluxes and displays derived results from past and current SREM measurements. The tool is based on the application of a linear algorithm solver for the inverse problem of calculating fluxes from the SREM count-rate measurements. The inverse method has been developed by IAASARS/NOA and has been validated by comparing results of selected number of past solar energetic particle events with measurements from other proton monitors.
If your browser supports Highcharts JavaScript library, you can navigate through the interactive proton flux plots:
- Interactive plots of latest SREM proton fluxes
- Interactive plots of annual SREM proton fluxes (Registration required)
For instructions about viewing the interactive plots see here. Users of non-supported browsers can view the SREM proton flux summary plots:
The SEPF tool is a European space weather asset developed and operated by the Space Research and Technology Group of the Institute for Astronomy, Astrophysics, Space Applications & Remote Sensing (IAASARS), National Observatory of Athens (NOA). The development of SEPF has been supported through the ESA Contract 21480/08/NL/NR “SREM Solar Particle Event Scientific Analysis”.
INTEGRAL/SREM Latest Proton Fluxes
Omnidirectional differential proton flux from the latest available measurements of the INTEGRAL/SREM. The INTEGRAL spacecraft is in an elliptical 72-hour orbit. The occasional sharp flux enhancements are attributed to radiation belt crossings. The available latest proton fluxes from operational SREM units can be viewed here.
For the use of the data, permission should be sought from the SREM PI: Petteri Nieminen
Development and operation of SEPF tool: Ingmar Sandberg
SEPF tool contact point: Ioannis A. Daglis