Solar Section        

 
 

September 27, 2019

A Short Summary of Carrington Rotation 2221

Carrington Rotation CR2221 covered the time period from 2019-08-22 2136 UT – 2019-09-19 0347 UT.
At the time of this writing 167 Images/Observations were submitted for the archives. The submissions can be viewed in ALPO’s Solar Archive for CR2221:
http://alpo-astronomy.org/gallery3/index.php/Solar-Observations-Archive/SolarImages2019/CR2221
The rotation brought us one short lived active region, AR2748, which lasted two days. The region covered an area of 20 millionths on its second day on September 3rd. During the rotation we had 26 spotless days . The highest Wolf number for the rotation was 12 on September 3rd. The Rotation continued the transition from C24 to C25 with a number of reverse polarized areas. See our .pdf of the Reverse Polarized Areas Overview which includes the latest updates by clicking here:
http://www.alpo-astronomy.org/solarblog/wp-content/uploads/2019/04/2019-04-xx-RevPolarized.pdf .
Overall Solar Activity remained Very Low and the rotation increased the spotless days count since solar maximum to 553. Finally, the Sun produced 1 A-class, and no B, or C-class flares during the rotation.
This time we would like to feature some images submitted by, David Teske, a composite with a reverse polarized area by Theo Ramakers and a nice WL image, as Howard Eskildsen captured a plane flying through his field of view. Please click the thumbnails below to see the full image. Thanks to all contributors for another great rotation. Please take a look at all the drawings/images by clicking on the link above which will bring you to our archive for CR2221.
Clear Skies,
Theo Ramakers
Assistant Coordinator, the ALPOSS

 

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