Can we predict long-term solar variability?

By Andy May This post is a result of an online conversation with Dr. Leif Svalgaard, a research physicist at Stanford University. Leif knows a great deal about the Sun and solar variability and can explain it clearly. Our disagreement is over whether long-term solar variations could be large enough to affect Earth’s climate [...]

By |2021-07-24T14:06:41+02:0024 July 2021|News, USA|Comments Off on Can we predict long-term solar variability?

How to compare today to the past

In the last post, I discussed the problems comparing modern instrumental global or hemispheric average temperatures to the past. Ocean temperature coverage was sparse and of poor quality prior to 2005. Prior to 1950, land (29% of the surface) measurements were also sparse and of poor quality. Only proxy temperatures are available before thermometers were [...]

By |2021-06-24T16:06:52+02:0024 June 2021|News, USA|Comments Off on How to compare today to the past