SDO/HMI - Debrecen Sunspot Data (HMIDD)

Images are available by courtesy of NASA/SDO and the AIA, EVE, and HMI science teams.
Győri, L., Baranyi, T., Ludmány, A.

The aim of this project is to produce space-borne sunspot databases with hourly time resolution and user-friendly tools by using the images of HMI on board NASA's Solar Dynamics Observatory (SDO).

Data and Image Products: (All ftp) Additional tables: tilt angles of sunspot groups derived from SDO.

Description of the rainbow-colored columns:

Graphical presentation of sunspots of the year
Selected original Level 1.8. full-disk images(file name: TAI): Continuum intensity (jpg) / Magnetograms (jpg)
Processed full-disk images (file name: UT) (solar north at the top): Contrast enhanced intensity images (jpg) / Sunspot polarity drawings (jpg)
Sunspot and sunspot group data (see HMIDDformat.txt):
- Full-disk catalogue of sunspots (txt) / Catalogue of sunspot and sunspot group data (txt)
- Images of sunspot groups (jpg) / Images of sunspot groups (fits)
Facular data (see HMIDDformat.txt): Full-disk catalogue of continuum faculae (txt) / Graphical presentation of faculae of the year
2010 2010I_jpg 2010M_jpg 2010fd_jpg 2010dr_jpg fdHMIDD2010 HMIDD2010 2010group_jpg 2010group_fits facHMIDD2010 2010
2011 2011I_jpg 2011M_jpg 2011fd_jpg 2011dr_jpg fdHMIDD2011 HMIDD2011 2011group_jpg 2011group_fits facHMIDD2011 2011
2012 2012I_jpg 2012M_jpg 2012fd_jpg 2012dr_jpg fdHMIDD2012 HMIDD2012 2012group_jpg 2012group_fits facHMIDD2012 2012
2013 2013I_jpg 2013M_jpg 2013fd_jpg 2013dr_jpg fdHMIDD2013 HMIDD2013 2013group_jpg 2013group_fits facHMIDD2013 2013
2014 2014I_jpg 2014M_jpg 2014fd_jpg 2014dr_jpg fdHMIDD2014 HMIDD2014 2014group_jpg 2014group_fits facHMIDD2014 2014
2014 2015 2016
Daily refresh

SDO | Solar Dynamics Observatory - satellite based data

Click here to see the explanation to the "Study tool of sunspot groups" available inside the graphical presentation at the link “See sunspots with tool" below the images in the pages of sunspot groups. This simple tool is useful to study positions and polarities of sunspots by completing the sunspot group images in that page with additional images in high resolution and polarity drawings.

Note: The assignment of spots to sunspot groups is processed with an automatic method. This method is mainly based on the information on sunspots and sunspot groups listed in DPD. That spot which is not included into DPD is assigned to the closest group of DPD if their distance is smaller than 5 degrees. If there are no DPD groups within this distance, the spot or the cluster of nearby spots is assigned to a newly created sunspot group with a name created from an existing NOAA active region number by adding a previously not used letter to it.

DATA POLICY: If the HMIDD data or any related on-line tools are used in any publications, please refer to these papers:
Baranyi, T., Győri, L., Ludmány, A., On-line Tools for Solar Data Compiled at the Debrecen Observatory and their Extensions with the Greenwich Sunspot Data, Solar Physics, 291, 3081-3102, 2016, DOI: 10.1007/s11207-016-0930-1
Győri, L., Ludmány, A., Baranyi, T., Comparative analysis of Debrecen sunspot catalogues, Monthly Notices of the Royal Astronomical Society, 465 (2), 1259-1273, 2017, DOI: 10.1093/mnras/stw2667
If the HMIDD tilt angle data are used in any publications, please also refer to this paper:
Baranyi, T.: 2015, Comparison of Debrecen and Mount Wilson/Kodaikanal sunspot group tilt angles and the Joy's law, MNRAS, 447, (4): 1857-1865, DOI:10.1093/mnras/stu2572

ACKNOWLEDGEMENTS The data production for 2013-14 and additional tools (full-disc and sunspot group polarity drawings as well as tilt angles for 2010-14) has received funding from the European Community's Seventh Framework Programme (FP7/2012-2015) under grant agreement No. 284461 (EHEROES, Mar. 2012 - Feb. 2015).
The data for 2010-2012 were produced within the frame of ESA PECS project No. C98081 (2009-2012) "Production and cross-­calibration of space-borne sunspot data".

Contact person: Tünde Baranyi (e-mail:baranyi[at]; Requests, comments, questions or bug-reporting are welcome.

Related sites:

- Helioseismic and Magnetic Imager - HMI
- Solar Dynamics Observatory - Main page - NASA
- Solar Dynamics Observatory - Wikipedia

Solar Dynamics Observatory - SDO

Thanks to all for support!

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