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Human Spaceflight - Increased crew radiation exposure risk


A screen capture from the COMESEP Alert System web page from 21 September 2015
shows the issued geomagnetic and SEP storm alerts following the detection of two
solar flares and a CME in the top part. A timeline of these alerts is shown in the
bottom part where the colours represent the expected risk level.

The service "Human Spaceflight: Increased crew radiation exposure risk" aims to provide information which can be used to help estimate the expected in-flight radiation dose. Radiation environments considered include solar energetic particles, galactic cosmic rays, and Earth's radiation belts. This service is made possible by providing forecasts of local area radiation fluxes combined with spacecraft and human phantom shielding geometry models. The service is intended for personnel involved in monitoring the expected radiation environment during crewed space missions.

This service is implemented through a combination of products, tools and alerts which can be found through the following tabs along with expert support provided by the teams constituting the SWE Network. Should you require further guidance in the use of this service, or have specific questions about any aspects of the service presented here, don't hesitate to contact the Helpdesk.

 

Near-Earth environment forecasts
Forecasts for near-Earth solar energetic particles and geomagnetic conditions are provided by these products:

  • COMESEP provides forecasts of geomagnetic storms and solar energetic particle (SEP) radiation storms;
  • Alert/E provides forecast of geomagnetic and solar radiation storms generated by the Met Office Space Weather Operations Centre (MOSWOC);
  • FORIND provides nowcasts and forecasts of geomagnetic and solar indices needed for modelling in support of atmospheric drag calculation;
  • UAH provides geomagnetic indices, Dst Forecast, geomagnetic conditions and a regional geomagnetically induced currents proxy;
  • IRF provides a forecast of geomagnetic indices: Kp, Dst and dB/dt;


Solar activity forecasts
Forecasts of solar activity and their propagation through the heliosphere are provided by these products:

  • ROB/SIDC provides probabilistic forecasts for the occurrence of X-ray flares determined by the Solar Influences Data Analysis Center (SIDC);
  • A-Effort is an on-line solar-flare prediction service that monitors, evaluates, and provides advance warning of intense solar flare activity;
  • UKMO provides the probability for the occurance of solar flares generated by the Met Office Space Weather Operations Centre (MOSWOC);
  • Flarecast is a fully automated forecasting system for solar flares;
  • Enlil/E provides predictions of CME arrival times and solar wind speed and density near Earth based on the Enlil 3d heliospheric model;
  • DBM provides CME near-Earth arrival time predictions based on the magnetohydrodynamical drag;
  • DBEM provides CME arrival time predictions based on ensemble runs of the DBM model;
  • PROPTOOL allows users to propagate CMEs, corotating structures and SEPs through the interplanetary medium;


This service page is curated by the ESC Space Radiation. For further information, please contact SSCC Help-desk.

Particle radiation in the form of Solar Energetic Particles and Galactic Cosmic Rays is considered the main hazard for human spaceflight, specifically when considering a potential return trip to the Moon or interplanetary travel in general. Even at Low Earth Orbit (LEO) like the International Space Station, particle radiation poses a risk as energetic particles can penetrate deep into the magnetosphere, in particular in the polar regions. Furthermore, spacecraft passing the Van Allen radiation belts need to take into account the increased radiation levels in these regions. Forecasting the space environment to evaluate the possible health effects of space particle radiation on humans is therefore necessary.

Near-Earth environment forecasts

Forecasts for solar proton events are provided by the COMESEP and Alert/E products. The COMESEP Alert System delivers fully automated alerts for the risk of an SEP event with protons energies >10 MeV and >60 MeV following the obervation of a M- or X- class flare. Alert/E provides the probability for a solar radiation storm of protons with energies >10 MeV for the next 4 days and is updated twice daily by the forecaster of the Met Office Space Weather Operations Centre (MOSWOC). Forecasts for geomagnetic storms in terms of indices are provided by the UAH, IRF, COMESEP, ALert/E and FORIND products.

Solar Activity forecasts and propagation through the heliosphere

Solar Flares are forecasted by various products: ROB/SIDC, A-Effort, Flarecast, and UKMO. The CME propagation times are provided by DBM (near Earth), DBEM, and Enlil/E. To track CMEs, corotating streams and energetic particles in the heliosphere, the tool PROPTOOL can be used. The SIDC also provides a daily space weather bulletin.

For further information, please contact SSCC Help-desk

Solar Activity: (Near-) Real-time Measurements

10.7cm Solar Radio Flux (F10.7)

    Solar Activity: Forecasts

    Solar Flares
    • FLARECAST Solar flare forecast
    • A-EFFort Solar flare forecast
    • SIDC Latest Solar flare forecast
    • SIDC Latest daily space weather bulletin
    • UKMO Latest Solar flare forecast
       UKMO
    CMEs
    • SIDC Latest daily space weather bulletin
    CME propagation forecast
    • Heliospheric solar wind forecasts for Venus
    • Near-Earth CME arrival predictions (WSA-Enlil + Ensemble)
    • Heliospheric solar wind forecasts for Mercury
    • Heliospheric solar wind forecasts for Mars
    • CME near-Earth arrival time predictions (DBM)
       DBM
    • CME arrival time predictions (DBEM)
       DBEM
    • H-ESC product assessment report
    • Heliospheric propagation tool
    Coronal Holes
    • SIDC Latest daily space weather bulletin
    Solar Disc Magnetic Fields
      International Sunspot number
      • SIDC/SILSO Latest sunspot number forecast
      • Sunspot Number Forecast SC 12-month
         FORIND
      • Sunspot Number Forecast CM 12-month
         FORIND
      • Sunspot Number Forecast ISM 12-month
         FORIND
      • Sunspot Number Forecast ICM 12-month
         FORIND
      • Sunspot Number Forecast IMLM 12-month
         FORIND
      • Sunspot Number Forecast multi-year
         FORIND
      Sunspot Group Data
        Solar Filament Data
          10.7cm Solar Radio Flux (F10.7)
          • SIDC Latest 10.7cm Solar radio flux (F10.7) forecast
          • F10.7 Index Forecast 27-day/BGS
             FORIND
          • F10.7 Index Forecast multi-year
             FORIND
          • F10.7 Index Forecast 27-day/SWPC
             FORIND
          • F10.7 Index Forecast 45-day
             FORIND
          • F10.7 Index Forecast 30-day Absolute
             FORIND
          • F10.7 Index Forecast 30-day Adjusted
             FORIND
          Solar EUV Index (S10.7)
            Solar EUV Index (E10.7)
              Solar FUV Index (M10.7)
                Solar X-ray & UV Index (Y10.7)
                  Ionospheric Index (IG12)
                  • IG12 Index Forecast multi-yeart
                     FORIND
                  EUV Images of Sun
                    White Light Solar Imaging
                      Soft X-ray Images of the Sun
                        Solar EUV Images Outside of Sun-Earth Line
                          Solar Coronagraphic Images Outside of Sun-Earth Line
                            White-light wide-angle Coronagraph Images
                              Solar X-ray Flux
                                Solar EUV Integrated Flux
                                  Solar UV Flux

                                    Interplanetary Medium at L1: Forecasts

                                    High Energy >10 MeV Protons
                                    • Near-Earth space weather notifications
                                    High Energy >10 MeV/nuc Ions
                                      1-10 MeV Protons
                                        1-10 MeV/nuc Ions
                                          0.03-1 MeV/nuc Ions
                                            2-50 MeV Solar Electrons
                                              30 keV-8 MeV Electrons
                                                Interplanetary Magnetic Field (IMF)
                                                  Solar Wind Bulk Velocity
                                                  • SIDC Latest daily space weather bulletin
                                                  • Near-Earth solar wind forecasts (WSA-Enlil + Ensemble)
                                                  • Empirical solar wind speed forecast
                                                     ESWF
                                                  • Solar wind speed forecast (STEREO-A persistence model)
                                                     STA+CH
                                                  • AWARE_NEXT Enhanced 24 hour solar wind forecast
                                                  Solar Wind Bulk Density
                                                  • Near-Earth solar wind forecasts (WSA-Enlil + Ensemble)

                                                  Interplanetary Medium Outside L1: Forecasts

                                                  Solar Energetic Particle Events
                                                  • SIDC Latest daily space weather bulletin
                                                  Interplanetary Medium Data
                                                  • Heliospheric solar wind forecasts for Venus
                                                  • Heliospheric solar wind forecasts for Mercury
                                                  • Heliospheric solar wind forecasts for Mars
                                                  • Solar wind propagation tool

                                                  Magnetospheric Environment: (Near-) Real-time Measurements

                                                  Plasma Drift Velocity

                                                    Magnetospheric Environment: Forecasts

                                                    Geomagnetic Storm Condition
                                                      Geomagnetic Indices Kp and K
                                                      • SIDC Latest daily space weather bulletin
                                                      • Kp 3-hour Index Forecast 3-day
                                                         FORIND
                                                      • Wing 3-hour Kp Index Forecast 1-hour
                                                         FORIND
                                                      • Wing 3-hour Kp Index Forecast 4-hour
                                                         FORIND
                                                      • Largest Kp Index Forecast 27-day
                                                         FORIND
                                                      • Short term (1 hour) Kp forecast
                                                         TGO
                                                      • Forecast of Kp
                                                         IRF
                                                      Geomagnetic Index Ap and A
                                                      • SIDC Latest daily space weather bulletin
                                                      • ap index Forecast 27-day
                                                         FORIND
                                                      • ap index Forecast 3-day/SWPC
                                                         FORIND
                                                      • ap index Forecast 27-day/SWPC
                                                         FORIND
                                                      • ap index Forecast 45-day
                                                         FORIND
                                                      • 27 day global forecast issued every 24 hours
                                                         TGO
                                                      Geomagnetic Index Dst
                                                      • COMESEP Geomagnetic storm forecast
                                                      • Dst Index Forecast 1-hour
                                                         FORIND
                                                      • SolarHoldover
                                                         UAH
                                                      • Forecast of Dst
                                                         IRF
                                                      High Energy >10 MeV Protons
                                                      • GOES-15 Radiation Environment
                                                         SaRIF
                                                      • GOES-14 Radiation Environment
                                                         SaRIF
                                                      • GIOVE-A Radiation Environment
                                                         SaRIF
                                                      • Slot Region Radiation Environment
                                                         SaRIF
                                                      • COMESEP SEP forecast
                                                      High Energy >10 MeV/nuc Ions
                                                        1-10 MeV Protons
                                                          1-10 MeV/nuc Ions
                                                            0.03-1 MeV/nuc Ions
                                                              30 keV-8 MeV Electrons
                                                              • GOES-15 Radiation Environment
                                                                 SaRIF
                                                              • GOES-14 Radiation Environment
                                                                 SaRIF
                                                              • GIOVE-A Radiation Environment
                                                                 SaRIF
                                                              • Slot Region Radiation Environment
                                                                 SaRIF
                                                              • MOSWOC Forecast
                                                                 SaRIF
                                                              Thermal and Supra-thermal Electron and Ion Energy Spectra
                                                              • SWIFF Plasmasphere model (SPM)
                                                                 SPM
                                                              Thermal Ions Density and Temperature

                                                                Thermospheric and Atmospheric Conditions: Forecasts

                                                                Local External Magnetic Field on Ground
                                                                • Forecasts of dB/dt
                                                                   IRF

                                                                Spacecraft Effects and Anomolies: (Near-) Real-time Measurements

                                                                Spacecraft Radiation Monitors
                                                                • Radiation environment inside ISS
                                                                • PROBA-1/SREM dataset on SEDAT
                                                                   SEDAT
                                                                • Integral/SREM dataset on SEDAT
                                                                   SEDAT
                                                                • PROBA-1/SREM radiation rates
                                                                   SREM
                                                                • Integral/SREM radiation rates
                                                                   SREM

                                                                Spacecraft Effects and Anomolies: Forecasts

                                                                Orbital Data of Spacecraft Carrying Space Weather Instruments

                                                                  The propagation tool supports the assessment of CME (Coronal Mass Ejections) and CIR (Corotating Interaction Regions)and SEP (Solar Energetic Particle) arrival times at planets, spacecraft and other solar system objects such as comets. It supports the tracking of heliospheric structures using white light J-maps and has access to catalogues of CME/CIR trajectories. It is also connected to science archives of in-situ data (AMDA) and imagery data to assist with posteriori analysis.

                                                                  The Drag-Based Model (DBM) tool provides predictions of the interplanetary coronal mass ejection (ICME) travel and its arrival at an arbitrary ecliptic-plane location or at already listed planets and satellites in ecliptic-plane orbits. Calculations are based on the assumption that the dominant force in the heliospheric dynamics of ICMEs is the magnetohydrodynamical (MHD) equivalent of the aerodynamic drag.

                                                                  The Drag-Based Ensemble Model (DBEM) tool provides predictions of the Interplanetary Coronal Mass Ejection (ICME) travel and its arrival at an arbitrary ecliptic-plane location. Calculations are based on the standard DBM assumption that the dominant force is the MHD equivalent of aerodynamic drag. In the ensemble version the model is run multiple times by perturbing input parameters to build up a statistical view of the most likely outcome.

                                                                  All Quiet Alert

                                                                  SIDC Latest All quiet alert

                                                                  End-of-quiet Alert

                                                                  SIDC Latest All quiet alert

                                                                  This section provides links to web pages or resources that are not part of the SSA Space Weather Network or esa.int domain.  These sites are not under ESA control, and therefore ESA is not responsible for any of the information or links that you may find there. 

                                                                  Reference documents

                                                                  • Directive 2013/59/Euratom Basic safety standards for protection against the dangers arising from exposure to ionising radiation.
                                                                  • ECSS-E-ST-10-04C Space environment (15 November 2008)
                                                                  • ECSS-E-ST-10-12C Method for the calculation of radiation received and its effects, and a policy for design margins (issued on 15 November 2008)
                                                                  • ECSS-E-HB-10-12A Calculation of radiation and its effects and margin policy handbook (issued on 17 December 2010)