Solar Section        


November 28, 2016

A short Summary of Carrington Rotation 2183

Carrington Rotation 2183 covered the time period from 2016-10-20 1024 UT until 2016-11-16 1739 UT.
367 Reports and images were submitted for our archive and can be viewed in ALPO’s Solar Archive for CR2183:
During the rotation, 9 Active Regions could be observed. The largest region, AR2607, reached its maximum area of only 100 millionths on November 12th. This is far smaller than the largest area in the previous rotation, and it is also the date where the total area for the Sun maxed out for the rotation at 120 millionths. The Wolf number reached its maximum one day later on November 13th when three regions were visible on the hemisphere for a Wolf number of 38. Carrington Rotation CR2183 showed again a quiet time for the Sun as it did have two days, November 3rd and November 9th, where the total active region area as well as the Wolf number were 0.
We thank all of those who did submit their data and continued their effort to record the solar activity over the years.
For this Rotation we are featuring three random images from our observers. Thanks to them as well as all other contributors for a great rotation. Please take a look at all their submission in our archive, by clicking the link above.

The ALPO Solar Team.


November 2, 2016

A short Summary of Carrington Rotation 2182

Carrington Rotation 2182 covered the time period from 2016-09-23 0334 UT until 2016-10-20 1024 UT.
610 Reports and images were submitted and all can be viewed in ALPO’s Solar Archive for CR2182:

A total of 8 Active Regions could be observed during the rotation, AR2593 and AR2596 thru 2602. This is less than half of the previous rotation. We had one day without a reported active region during the rotation on October 2nd. The largest region AR2599, maxed out with a region area of 470 millionths on October 6th. The highest “Total Daily Active Region Area” for the hemisphere was recorded on October 10th with 630 millionths with AR2599 being the dominant contributor with 400 millionths. The highest Wolf number of 64 was recorded on October 11th. The “total active region area” for AR2599 (sum of the daily active region area of an active region for the period the region was visible) is only 71% of the largest region during the previous rotation.
Below we feature images of October 6th and 11th of three of our contributors: Dave Tyler, David Teske and Guilherme Grassman. However, we would like to thank all that contributed to our archive and please take a look at them by clicking on the link above.
Your Solar Team

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