In August, I reported that the Kasitochi volcano in the Aleutian Island erupted over a million tons of sulfur dioxide (SO2) into the atmosphere over the Pacific Ocean, here is a satellite sounder derived image of the cloud that was released:
That was then. Since then, the SO2 has had about a month to disperse around the Northern Hemisphere. Now we can watch it occur, see the movie (animated GIF) below. It may take awhile to fully load on slow connections: Read the rest of this entry »
After the August 21st sunspot debacle where SIDC reported a spot and initially NOAA didn’t, mostly due to the report from the Catania Observatory in Italy, we have another similar situation. On September 11th, a plage area developed. Here is the SOHO MDI for 1323UTC:
Find the sunspot in this image – Click for a larger image
Here is another from a couple hours later, 1622UTC :
Find the sunspot in this image – Click for a larger image
Note that in the large versions of both the above images, you’ll see a tiny black speck. That’s NOT the “sunspot” but burned out pixels on the SOHO CCD imager.
To help you locate the area of interest, here is the SOHO magnetogram for the period, as close as one is available to the above image time. It shows the disturbance with the classic N-S polarity of solar cycle 23 close to the equator: Read the rest of this entry »
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