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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]
Earth's energy imbalance (EEI) was about 0.7 W/m 2 as of around 2015, indicating that Earth as a whole is accumulating thermal energy and is in a process of becoming warmer. [22]: 934 Over 90% of the retained energy goes into warming the oceans, with much smaller amounts going into heating the land, atmosphere, and ice. [51]
This is an accepted version of this page This is the latest accepted revision, reviewed on 22 November 2024. Gas in an atmosphere with certain absorption characteristics This article is about the physical properties of greenhouse gases. For how human activities are adding to greenhouse gases, see Greenhouse gas emissions. Greenhouse gases trap some of the heat that results when sunlight heats ...
From ancient times, people suspected that the climate of a region could change over the course of centuries. For example, Theophrastus, a pupil of Ancient Greek philosopher Aristotle in the 4th century BC, told how the draining of marshes had made a particular locality more susceptible to freezing, and speculated that lands became warmer when the clearing of forests exposed them to sunlight.
[7] ε=0.78 implies 22% of the surface radiation escapes directly to space, consistent with the statement of 15% to 30% escaping in the greenhouse effect. The radiative forcing for doubling carbon dioxide is 3.71 W m −2, in a simple parameterization. This is also the value endorsed by the IPCC.
British mobile phone company O2 has unveiled an “AI granny” called Daisy who is helping combat fraud by wasting scammers’ time with long phone calls.
The Planck response is the additional thermal radiation objects emit as they get warmer. Whether Planck response is a climate change feedback depends on the context. In climate science the Planck response can be treated as an intrinsic part of warming that is separate from radiative feedbacks and carbon cycle feedbacks.
The New York Times editorial board published an opinion piece on Saturday urging people not to vote for former President Trump. “You already know Donald Trump. He is unfit to lead. Watch him.