Challenge Events

Challenge SEP Events (2023)

Please see the SEPVAL working meeting page for links to the most up-to-date challenge event lists, supporting information, and Rules of Participation. The suprathermal spectra provided below may still be used in the 2023 challenge. We will aim to provide spectra for all challenge event periods by the time of the working meeting.

Challenge SEP Events (2019/2021/2022)

These are the SEP events selected for the SHINE 2019/ISWAT 2021 challenges. See our Next Steps for a description of what is planned for a complete event list that will allow for a thorough validation.

Click on each SEP event below to see images, links to entries in databases, input parameters, plots of GOES proton flux, and proton flux values that will be used for comparison with models.

A single file containing all input parameters and >10, >100 MeV proton measurements for all SEP events can be found under the Model Input Parameters page (updated 2021-04-29).

All of the individual event json files and csv files containing values for >10, >100, >30, >50, and >60 MeV thresholds can be downloaded here - updated 2021-10-21 to reflect the files used for the ISWAT2021 validation presentation:

  • GOES integral fluxes (shown throughout this website and used for validation so far): json [ZIP] (with plots)
  • SEPEM RSDv2.0 background-subtracted (OpSEP method) and converted to integral fluxes: json [ZIP] (with plots)
  • GOES uncorrected differential fluxes with Sandberg et al. 2014 and Bruno 2017 energy bins applied, background-subtracted, then converted to integral fluxes: json [ZIP] (with plots)

Further information about these data sets can be found on the Data Sets page.

Model Input Parameters

Standard Input Parameters

Download an excel file containing all the flare and CME input parameters here [xlsx] (updated 2021-04-29).

Download images reporting all of the seed population input parameters here [zip].

Flare Information

Flare information taken from GOES X-ray measurements

SEP Event DateFlare Onset TimeFlare Peak TimeFlare End TimeFlare MagnitudeFlare LatFlare LonActive Region
March 7, 20122012-03-07 0:02:002012-03-07 0:24:002012-03-07 0:40:00X5.4N17E151429
May 17, 20122012-05-17 1:25:002012-05-17 1:47:002012-05-17 2:14:00M5.1N12W891476
July 12, 20122012-07-12 15:37:002012-07-12 16:49:002012-07-12 16:49:00X1.4S14W021520
April 11, 20132013-04-11 6:55:002013-04-11 7:16:002013-04-11 7:29:00M6.5N09E121719
January 6, 2014-------
January 7, 20142014-01-07 18:04:002014-01-07 18:32:002014-01-07 18:58:00X1.2S15W111944
July 14, 20172017-07-14 1:07:002017-07-14 2:09:002017-07-14 3:24:00M2.4S09W332665
September 4, 20172017-09-04 20:28:002017-09-04 20:33:002017-09-04 20:37:00M5.5S08W162673
September 6, 20172017-09-06 11:53:002017-09-06 12:02:002017-09-06 12:10:00X9.3S09W342673
September 10, 20172017-09-10 15:35:002017-09-10 16:06:002017-09-10 16:31:00X8.2S08W882673

CME Forecast Quality Parameters

NOAA or CCMC Forecaster near Real-Time CME Fits (ENLIL Inner Boundary) | CDAW LASCO CME Catalog Values |

SEP Event DateCME Time at 21.5RsunCME LatCME LonCME HACME 3D Velocity (km/s)SourceCME LASCO C2 First Look TimeCME Plane of Sky Velocity (km/s)
March 7, 20122012-03-07 1:59:0024-29502040NOAA (Hazel)2012-03-07 0:24:062684
May 17, 20122012-05-17 4:34:00-1771541263NOAA (Hazel)2012-05-17 1:48:051582
July 12, 20122012-07-12 19:35:00-17-6701400DONKI (Leila)2012-07-12 16:48:05885
April 11, 20132013-04-11 11:54:00-6-1748743NOAA (Hazel)2013-04-11 7:24:06861
January 6, 20142014-01-06 10:38:008110851200DONKI (Leila)2014-01-06 8:00:051402
January 7, 20142017-01-07 20:01:00-2121502048NOAA (Hazel)2014-01-07 18:24:051830
July 14, 20172017-07-14 5:29:00-94049750DONKI (Barbara Thompson)2017-07-14 1:25:411200
September 4, 20172017-09-04 23:10:00-243541323NOAA (Hazel)2017-09-04 20:36:051418
September 6, 20172017-09-06 14:57:00-1523341816DONKI (Andrea Minot)2017/09/06 12:24:051571
September 10, 20172017-09-10 17:36:00-986512087NOAA (Hazel)2017-09-10 16:00:053163

Suprathermal Seed Spectra

Please see the page dedicated to suprathermal seed spectra to get spectral functions that represent the seed population at 1 AU and guidance about how to scale these populations to radii closer to the sun.

Seed population page

GOES Proton Measurements for >10 MeV, 10 pfu Threshold

Updated 2021-04-29

GOES Proton Measurements | Threshold: >10 MeV exceed 10 pfu

SEP Event DateOperational Satellite>10 MeV, 10 pfu exceeded>10 MeV Max Flux Time>10 MeV Max Flux (pfu)>10 MeV, 0.85*10 pfu End>10 MeV Duration (hours)>10 MeV Fluence (cm-2)>100 MeV Fluence (cm-2)
March 7, 2012GOES-132012-03-07 5:10:002012-03-08 11:15:006529.82012-03-12 22:55:00137.94.08E+096.80E+07
May 17, 2012GOES-132012-05-17 2:10:002012-05-17 4:30:00255.442012-05-18 17:45:0039.589.61E+074.12E+06
July 12, 2012GOES-132012-07-12 18:35:002012-07-12 22:25:0096.082012-07-14 23:00:0052.26.03E+078.94E+04
April 11, 2013GOES-132013-04-11 10:55:002013-04-11 16:45:00113.552013-04-13 0:50:0037.926.34E+079.54E+05
January 6, 2014GOES-132014-01-06 9:15:002014-01-06 16:00:0042.172014-01-07 19:30:0034.253.91E+071.33E+06
January 7, 2014GOES-132014-01-07 19:30:002014-01-09 03:40:001026.12014-01-11 20:35:0097.081.47E+092.25E+06
July 14, 2017GOES-132017-07-14 9:00:002017-07-14 23:20:0022.3742017-07-15 12:15:0027.251.50E+077.00E+04
September 4 and 6, 2017GOES-132017-09-05 0:40:002017-09-08 0:35:00844.382017-09-08 15:40:0087.174.15E+082.90E+05
September 10, 2017GOES-132017-09-10 16:45:002017-09-11 11:45:001493.52017-09-14 18:50:0098.081.89E+094.99E+07

GOES Proton Measurements for >100 MeV, 1 pfu Threshold

Updated 2021-04-29

GOES Protons | Threshold: >100 MeV exceeds 1 pfu

SEP Event DateOperational Satellite>100 MeV, 1 pfu exceeded>100 MeV Max Flux Time>100 MeV Max Flux (pfu)>100 MeV, 0.85*1 pfu End>100 MeV Duration (Hours)>10 MeV Fluence (cm-2)>100 MeV Fluence (cm-2)
March 7, 2012GOES-132012-03-07 4:05:002012-03-07 15:25:0069.2722012-03-10 14:30:0082.423.91E+096.77E+07
May 17, 2012GOES-132012-05-17 2:00:002012-05-17 2:30:0020.4452012-05-17 16:30:0014.57.43E+073.80E+06
July 12, 2012GOES-13N/AN/AN/AN/AN/AN/AN/A
April 11, 2013GOES-132013-04-11 9:40:002013-04-11 14:00:002.02972013-04-11 19:25:009.92.72E+077.11E+05
January 6, 2014GOES-132014-01-06 8:30:002014-01-06 10:05:004.0792014-01-06 18:50:0010.331.50E+071.03E+06
January 7, 2014GOES-132014-01-07 20:30:002014-01-07 22:40:004.26872014-01-08 12:45:0016.254.37E+081.84E+06
July 14, 2017GOES-13N/AN/AN/AN/AN/AN/AN/A
September 4 and 6, 2017GOES-13N/AN/AN/AN/AN/AN/AN/A
September 10, 2017GOES-132017-09-10 16:25:002017-09-10 22:15:0068.1282017-09-12 22:40:0054.251.75E+094.91E+07

Suprathermal Seed Populations

Download images reporting all of the seed population input parameters here [ZIP].

Guidance on how to use the seed populations will be added. The idea is that modelers may apply a radial scaling to seed populations measured at 1 AU in order to convert them to spectra closer to the sun. iPATH described their approach to using these seed populations in a presentation at ISWAT 2021.

The suprathermal seed populations have been derived at 1 AU using measurements during quite periods prior to each SEP event. Seed populations were derived at Earth using ACE/ULEIS, ACE/EPAM, and Wind data. Seed populations were also derived at STEREO-A and B, when available. The ACE/ULEIS detector experiences high background levels particularly obvious during quiet times, so it is recommended that the ACE/ULEIS spectra provided here are not used.

A spectral form of a power law with an exponential rollover was fit to the data to provide the spectra in a form that may be input into SEP models.

The spectra are shown here, but the spectra along with plots of the solar wind conditions used to derive the spectra are shown on each of the individual SEP event pages.

2012-03-07

/static/images/2012-03-07-SPECTRA-H.jpg

2012-05-17

/static/images/2012-05-17-SPECTRA-H0.jpg

2012-07-12

/static/images/2012-07-12-SPECTRA-H.jpg

2013-04-11

/static/images/2013-04-08-SPECTRA-h.png

2014-01-03 (for 2014-01-06 and 2014-01-07)

/static/images/2014-01-07-SPECTRA-H.jpg

2017-07-14

/static/images/2017-07-12-SPECTRA-h.png

2017-09-04

/static/images/2017-09-04-SPECTRA-H.jpg

2017-09-10

/static/images/2017-09-10-SPECTRA-H.jpg