Solar Section        

 
 

September 1, 2019

A Short Summary of Carrington Rotation 2220

Carrington Rotation CR2220 covered the time period from 2019-07-26 1607 UT – 2019-08-22 2136 UT.
At the time of this writing 174 Images/Observations were submitted for the archives. The submissions can be viewed in ALPO’s Solar Archive for CR2220:
http://alpo-astronomy.org/gallery3/index.php/Solar-Observations-Archive/SolarImages2019/CR2220
The rotation brought us two short lived active regions, AR2746 and AR2747, each of which lasted only one day. In fact, AR2747 was already gone by the end of the day resulting in a recorded area of 0 millionths while AR2746 measured 10 millionths for one day only on August 6th. This also was the Total Rotation Active Region Area for CR2220. During the rotation we had 25 spotless days . The highest Wolf number for the rotation was 12 on August 8th. The Rotation continued the transition from C24 to C25 with a number of reverse polarized areas on August 18th. 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 528. Finally, the Sun produced 4 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, Howard Eskildsen, and Theo Ramakers. 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 CR2220.
Clear Skies,
Theo Ramakers
Assistant Coordinator, the ALPOSS

 

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