Since most posters aren't aware of alternative theories for climate change or the flaws in the computer models to predict future climate, here is a quick primer. You can research this on your own in Bjorn Lomborg's book False Alarm or at Andrew Watts website wattsupwiththatDotCom.
One way, flawed to be sure, to test future computer model predictions is to see how well they worked in the past. CO2 emissions only began to increase dramatically after 1850. As such, they cannot explain the Roman Warm Period, the Maunder Minimum, the rise from 1650 to present day, the decline from 1940 to 1970, or the pause between 1997 and 2016. In fact, the 2009 Climategate email hack revealed the steps scientists took to "hide the decline" from 1940 to 1970, largely debunking Mann's hocky stick theory used by Al Gore in his Inconvenient Truth video.
In short, the models are not accurate. They cannot explain why temperature fluctuated in the past prior to the rise in CO2. After CO2 emissions began to rise, the models cannot explain the decline from 1940 to 1970 or the pause from 1997-2016.
Is there a theory that explains these fluctuations going back to 1600? Yes. Unfortunately, it doesn't generate any money for businesses or power grabs by politicians so it has been attacked by other scientists.
It's the cosmic ray affecting cloud cover theory advanced by Henrik Svensmark 20 years ago. It's too complex to explain in a few words, but here's a short version. Cosmic rays cause an increase in cloud cover. High sunspot activity increases solar wind, which in turn blocks cosmic rays from the atmosphere, which in turn reduces cloud format, which in turn heats the earth and importantly the oceans, which flow in a 20-30 year cycle.
Sunspot activity was very, very low in the Maunder Minimum, but it has been mostly high since 1700.
All the early IPCC climate change reports stated that cloud cover was not well understood. Interestingly, there is no reference to the uncertainties of cloud cover in the most recent IPCC report or a reference that it is understood. It's just omitted.
Cloud cover is also complex. Clouds at night keep heat in. Clouds in the day block heat. Clouds in polar regions keep heat in, etc.
Bottom line: The models don't even accurately predict what has happened in the past 100 years. They cannot be trusted to predict what will happen in the coming 100 years... certainly not to the point that we should be taking some of the actions that are being recommended.