DOI: 10.7910/dvn/6f25mg
title: MDI active region evolution videos for BARD catalog

description: &lt;h2&gt;Citation and Acknowledgements&lt;/h2&gt;

&lt;p&gt;&lt;br&gt;Please cite both this database the paper describing it, as well as adding the following acknowledgement:

&lt;p&gt;&lt;br&gt;&lt;b&gt;"The BARD catalog of BMRs was downloaded from the solar dynamo dataverse (https://dataverse.harvard.edu/dataverse/solardynamo), maintained by Andrés Muñoz-Jaramillo." &lt;/b&gt;&lt;/p&gt;

&lt;p&gt;&lt;br&gt; Database citation format is shown at the top of this page, underneath the database title. It can be downloaded in a variety of formats directly from this page&lt;/p&gt;

&lt;p&gt;&lt;br&gt;The papers describing this database are&lt;/p&gt;

&lt;p&gt;&lt;br&gt;&lt;b&gt;S. Chatterjee, A. Munoz-Jaramillo, & D. Lamb. &lt;/b&gt;Human-efficient labeling of a solar flux emergence video dataset by a deep learning model, 27 May 2021, PREPRINT (Version 1) available at Research Square &lt;a href="https://doi.org/10.21203/rs.3.rs-366908/v1"&gt;https://doi.org/10.21203/rs.3.rs-366908/v1&lt;/a&gt;&lt;br&gt;
&lt;/p&gt;

&lt;p&gt;&lt;br&gt;&lt;b&gt;A. Munoz-Jaramillo, Z. A. Werginz, J. P. Vargas-Acosta, M. D. DeLuca, J. C. Windmueller, J. Zhang, D. W. Longcope, D. A. Lamb, C. E. DeForest, S. Vargas-Dominguez, J. W. Harvey, & P. C. H. Martens&lt;/b&gt; , IEEE International Conference on Big Data, 3194 (2016). &lt;a href="https://ieeexplore.ieee.org/document/7840975"&gt;https://ieeexplore.ieee.org/document/7840975&lt;/a&gt; &lt;br&gt;
&lt;/p&gt;

&lt;p&gt;&lt;br&gt;&lt;b&gt;A. Munoz-Jaramillo, B. Navarrete, & L. A. Campusano&lt;/b&gt; , The Astrophysical Journal, Volume 920, Issue 1, id.31, 11 pp. &lt;a href="https://ui.adsabs.harvard.edu/abs/2021ApJ...920...31M"&gt;https://ui.adsabs.harvard.edu/abs/2021ApJ...920...31M&lt;/a&gt;&lt;br&gt;
&lt;/p&gt;

&lt;h2&gt;Main Limitations&lt;/h2&gt;

&lt;p&gt;&lt;br&gt;The main limitations of these data are:&lt;/p&gt;

&lt;ol&gt;
&lt;li&gt;Videos are assembled in a constant Carrington rotation frame so, BMRs may drift within the video due to differential rotation.&lt;/li&gt;

&lt;li&gt;Many videos have gaps and thus, do not have a constant cadence. We addressed this by interpolating the missing frames. &lt;b&gt;In these videos we do not include interpolated frames&lt;/b&gt;&lt;br&gt;.&lt;/li&gt;


&lt;/ol&gt;

&lt;h2&gt;Description&lt;/h2&gt;

&lt;p&gt; The Active Region (AR) magnetic evolution videos are created by -
&lt;ol&gt;
 &lt;li&gt;Projecting full-disc line-of-sight magnetograms into Carrington grid&lt;/li&gt;
 &lt;li&gt; Dividing the projected maps into 15 degrees x 15 degrees non-overlapping patches. Each patch is sampled into 90 pixels x 90 pixels resulting into pixel scale of (1/6) degree &lt;/li&gt;
 &lt;li&gt; Stacking a set of consecutive frames covering about half a solar rotation tied to each AR from Bipolar Active Region Detection (BARD) catalogue &lt;/li&gt;
&lt;/ol&gt; 
A total of 2453 videos are available over the period 1996 - 2011 in 'fits' format. Within the 'fits' header-
 &lt;ol&gt;
 &lt;li&gt;'NAXIS1' represents number of x-pixels&lt;/li&gt;
 &lt;li&gt; 'NAXIS2' represents number of y-pixels&lt;/li&gt;
 &lt;li&gt; 'NAXIS3' represents number of frames&lt;/li&gt;
 &lt;li&gt; 'TIMEXXXX' represents the time stamp for frame XXXX in YYYY-MM-DDTHH:MM:SS format&lt;/li&gt;
 &lt;li&gt;'CRVAL1' represents the starting Carrington Longitude (degrees) for each video&lt;/li&gt;
 &lt;li&gt;'CRVAL2' represents the starting Latitude (degrees) for each video&lt;/li&gt;
&lt;/ol&gt; 
Each video is manually verified and a label of '0' or '1' is added to the name of video with '0' representing 'no new AR emergence within the video' and '1' representing 'AR emergence'.