On Apr 24, 5:39 pm, Zeke Hausfather <[EMAIL PROTECTED]> wrote:
> I'm somewhat curious about the relationship between sunspots and TSI.
> Browsing the Lockwood paper, its clear that there is a strong
> correlation between sunspot counts and TSI, and I imagine sunspot
> counts are used as proxies for TSI reconstructions like Lean et al.
>
> In an era where we have direct satellite measurements of TSI, however,
> what is the point of the incessant comparison between temperature and
> sunspot counts in some quarters? Shouldn't they be using TSI data? I
> realize that there are are still some issues with reconciling PMOD and
> ACRIM datasets, but I imagine it can't be that big a barrier.
>
> Sunspots can probably be a useful tool in predicting the evolution of
> solar cycles (e.g. sunspot counts could provide better information
> than TSI measurements regarding the beginning of a new solar cycle).
> Still, I'm puzzled why we see so many graphs of sunspot counts and so
> few of TSI in climate change discussions.
We have sunspot records going back hundreds of years. The TSI records
only go back a few tens of years.
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