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.
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)Facular data (see HMIDDformat.txt): Full-disk catalogue of continuum faculae (txt) / Graphical presentation of faculae of the year
- Images of sunspot groups (jpg) / Images of sunspot groups (fits)
|DATA BY DAILY-1 OBSERVATIONS (QUICK-LOOK)|
SDO | Solar Dynamics Observatory - satellite based data
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.
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
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]tigris.unideb.hu); Requests, comments, questions or bug-reporting are welcome.