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The first chapter describes the expected effects of climate change with one degree Celsius (1 °C) increase in average global temperature since pre-industrial times.. The second chapter describes the effects of two degrees average temperature and so forth until Chapter 6 which shows the expected effects of an increase of six Celsius degrees (6 °C) average global temperature.
The IPCC Sixth Assessment Report (2021) included projections that by 2100 global warming is very likely to reach 1.0–1.8 °C under a scenario with very low emissions of greenhouse gases, 2.1–3.5 °C under an intermediate emissions scenario, or 3.3–5.7 °C under a very high emissions scenario. [89]
A short description of the RCPs is as follows: RCP 1.9 is a pathway that limits global warming to below 1.5 °C, the aspirational goal of the Paris Agreement. [29] RCP 2.6 is a very stringent pathway. [29] RCP 3.4 represents an intermediate pathway between the very stringent RCP2.6 and less stringent mitigation efforts associated with RCP4.5. [30]
The two atmospheric problems have achieved significantly different levels of understanding by the public, including both the basic science and policy issues. [16] People have limited scientific knowledge about global warming and tend to confuse it with [21] or see it as a subset of the ozone hole. [22]
Heaven and Earth: Global Warming — The Missing Science: Global warming: dispute of scientific consensus on climate change: Ian Plimer: 2009: ISBN 0-7043-7166-9: Hell and High Water: Global Warming — the Solution and the Politics — and What We Should Do: Global warming: evidence for dire consequences of inaction: Joseph J. Romm: 2006: ISBN ...
The Geological Society of America (GSA) concurs with assessments by the National Academies of Science (2005), the National Research Council (2006), and the Intergovernmental Panel on Climate Change (IPCC, 2007) that global climate has warmed and that human activities (mainly greenhouse‐gas emissions) account for most of the warming since the ...
Table of Historic and Prehistoric Climate Indicators - Temperature record of the past 1000 years - Temperature record since 1880 - Thermohaline circulation - Timeline of glaciation - TEX-86 - Thermocline - The Deniers - The Great Global Warming Swindle - The Republican War on Science - Timeline of environmental history - Tipping point (climatology)
This has led to increases in mean global temperature, or global warming. The likely range of human-induced surface-level air warming by 2010–2019 compared to levels in 1850–1900 is 0.8 °C to 1.3 °C, with a best estimate of 1.07 °C. This is close to the observed overall warming during that time of 0.9 °C to 1.2 °C.