Like i said, the problem of AGW is so big we have not yet worked out a global response in how to combat it. We in general have all understood the situation, but depending on personalities (those that only care for themselves) and businesses involved (those that make the most increasing out CO2 output and/or environmental destruction), they find excuses to not act as they should. That is just the way it is right now.
Still having said that, in about the next 20 years those people that are slowing the actions we need to be taking down, will have no influence in the world (or very little). Things (environmentally) will be changing so hard and fast that only clinical idiots will be able to deny the problem. At that point we will have an opportunity to push our governments to act and it will be expensive and not without turmoil, but pretty much everyone is then going to be in a panic and willing to do what is needed to stop our eventual collapse (of civilization).
The complexities of life on this planet are such that taking any one equation (or even a few) and predicting a future outcome based on that is not going to give you a correct answer. The 'model' is too simple to address the complexity. So that is why i think we will see humanity 'muddle through' what i guess will be accepted as the Anthropocene in future text books (or hololens!). Rather than focus on the negative outcome of a few mathematical models, i'd think our energy will be better spent on solutions to the problems, because those do exist also. But for certain we are talking about a big change in how we think and how we do things, especially in the modern western industrialized world that drives most of the current problems (western investments in China and India are the drivers even if it happens in those particular countries). We are talking about needing a total cultural and social revolution in terms of capitalism (in particular) and industry and business. Science can (and does) give us the answers but the shift in thinking has to happen in each one of us so we arrive at a time and place when our governments think the same and act in a way that will provide for a future for humanity.
But in the meantime this is where we are:
'Global heating to inflict more droughts on Africa as well as floods':
New UK research predicts extremes of weather will hit food production
www.theguardian.com
Global heating could bring many more bouts of severe drought as well as increased flooding to Africa than previously forecast, scientists have warned.
New research says the continent will experience many extreme outbreaks of intense rainfall over the next 80 years. These could trigger devastating floods, storms and disruption of farming. In addition, these events are likely to be interspersed with more crippling droughts during the growing season and these could also damage crop and food production.
“Essentially we have found that both ends of Africa’s weather extremes will get more severe,” said Elizabeth Kendon of the Met Office’s Hadley Centre in Exeter. “The wet extreme will get worse, but also the appearance of dry spells during the growing season will also get more severe.”
We are still along way off from realizing the change needed in all of us to avoid things getting worse and worse, and we will have a few setbacks before we start to turn the corner and make real progress. If we want it we can make it happen, we just (mostly) don't yet realize how much we want it, but we will and soon (tm).