American Association of Variable Star Observers (AAVSO)
Tue, 10/28/2014 - 19:40

Just wodering,
How can I access the Sunspot data from the Solar program?

David (JDAC)

Acessing sunspot data

Hi David,

Please describe your data request. We have raw group and sunspot counts from AAVSO solar observers going back to 2000 in the SunEntry database (see attached graph). We publish data every month to NOAA/NGDC, these include both American Relative sunspot numbers and VLF SID Events data:

Here are the references:

SSN -…

Bulletin -…

SID database -…

NGDC report -…

For raw data counts; Sara Beck, Matt Templeton, Kim Hay, or myself can dig these out of the SunEntry database, we just need to know what you want, and some idea about the purpose.

Also, here is a description of the SunEntry database tables (attached codebook).