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Let's be clear about facts here. Thus far, every reasonably scientifically based prediction for the past two decades has consistently been conservative. The I
by xorcist 6y ago
Let's be clear about facts here.
Thus far, every reasonably scientifically based prediction for the past two decades has consistently been conservative.
The IPCC has existed for about 30 years now. We are now starting to have data to compare their climate reports with. Independently of how you look at the data, we are mostly tracking the worst expected outcome. Everyone has a duty to do this for themselves. All the data is public.
- irthomasthomas 6y agoIt is a too large field for one to research alone, but I am familiar with the effort to track global leaf area and desertification. So here is my small contribution to the discussion: 2013: "Desertification is a fancy word for land that is turning to desert" begins Allan Savory in this quietly powerful talk. And terrifyingly, it's happening to about two-thirds of the world's grasslands, accelerating climate change and causing traditional grazing societies to descend into social chaos." https://m.youtube.com/watch?v=vpTHi7O66pI https://m.youtube.com/watch?v=vpTHi7O66pI 2014: Global Greening Is Firm, Drivers Are Mixed - Harvard "Evidence for global greening is converging, asserting an increase in CO2 uptake and biomass of the terrestrial biosphere. Evidence for these trends comes from firm empirical data." http://adsabs.harvard.edu/abs/2015AGUFM.B31A0515K http://adsabs.harvard.edu/abs/2015AGUFM.B31A0515K 2016: Greening of the globe and its drivers - Nature "Satellite records from 1982–2009 show a persistent and widespread increase of leaf area (greening) over 25% to 50% of the global vegetated area, whereas less than 4% of the globe shows decreasing leaf area (browning)." https://www.nature.com/articles/nclimate3004 https://www.nature.com/articles/nclimate3004 Elevated CO2 as a driver of global dryland greening - Nature "Recent regional scale analyses using satellite based vegetation indices such as the Normalized Difference Vegetation Index (NDVI), have found extensive areas of “greening”" https://www.nature.com/articles/srep20716 https://www.nature.com/articles/srep20716 Rise in CO2 has 'greened Planet Earth' http://www.bbc.co.uk/news/science-environment-36130346 http://www.bbc.co.uk/news/science-environment-36130346 "Prof Judith Curry, the former chair of Earth and atmospheric sciences at the Georgia Institute of Technology, added: "It is inappropriate to dismiss the arguments of the so-called contrarians, since their disagreement with the consensus reflects conflicts of values and a preference for the empirical (i.e. what has been observed) versus the hypothetical (i.e. what is projected from climate models)."