Read the following article to understand just how uncertain the underlying science of climate really is. Western governments are currently spending trillions of dollars based on very incomplete understanding. The IPCC reports are clearly politically based.
Atmospheric Fingerprint – Watts Up With That?
Summary
The debate about the cause of recent global warming of Earth’s surface remains unresolved. There are several reasons why current observations, including stratospheric cooling, are inconclusive. First, the total radiation imbalance, or “forcing,” required to warm Earth’s surface one degree over the past few hundred years is extremely small, just 3-4 W/m2. This is undetectable with current technology; so, our measurements are inconclusive. As was true in 1995, when SAR was being written, we still do not know the magnitude of natural variability. Unless we know what nature can do, and is doing to our climate, we cannot detect a human influence.
Attempts to model natural climate change all assume that there is no long-term natural warming or cooling, and all warming is assigned to human influences. The huge variations in climate before humans evolved belie this assumption.
The second serious problem is we do not know what the long-term trend is in the Sun. Is it increasing its radiation output? Or is it decreasing, or staying flat? Our observations of solar output are not accurate enough to tell. Further, we do not know how the Sun affects our climate. Is the total radiation output the only thing that matters? Unlikely. Undoubtedly the solar magnetic field, the frequency mix of the solar output must matter, and the solar wind surely has an influence. But we lack the ability to model these effects as discussed in Connolly, et al.
One thing is for sure, assuming the Sun and solar variability don’t affect our climate, is foolish. Yet, this assumption underlies the IPCC’s conclusion that humans are causing global warming.
via climate science
March 28, 2022 at 02:54AM
Iowa Climate Science Education 