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Clanan | 7 years ago
1. Recent studies on current climate models show they consistently over-predict carbon impact on global warming (source: Nature, Nov 2017: Emission budgets and pathways consistent with limiting warming to 1.5 °C). The article shows that the previous carbon budget was off by a factor of 4 for the next few years, and always predicted higher temps. In other words, the models over-fit the data and thus lose predictive capabilities.
2. Increase/decrease in drought occurrence is inconclusive (Trenberth et al in Nature, 2013): "Two recent papers looked at the question of whether large-scale drought has been increasing under climate change. A study in Nature by Sheffield et al entitled ‘Little change in global drought over the past 60 years’ was published at almost the same time that ‘Increasing drought under global warming in observations and models’ by Dai appeared in Nature Climate Change (published online in August 2012)."
3. On storms, SREX p. 159: The present assessment regarding observed trends in tropical cyclone activity is essentially identical to the WMO assessment (Knutson et al., 2010): there is low confidence that any observed long-term (i.e., 40 years or more) increases in tropical cyclone activity are robust, after accounting for past changes in observing capabilities.
4. The greatest two-year cooling event of the last 100 years just occurred in Feb, per GISTEMP Team, 2018: GISS Surface Temperature Analysis data. Global avg temp dropped 0.56 deg C.
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