We are now in the Suicene
The Holocene is the geological epoch that started approximately 11,650 years ago. The demarcation point between the Holocene and the preceding Pleistocene is the end of the last Glacial Period, in line with variations in the Earth's orbit.
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Start of the Anthropocene
It makes sense to name an epoch after the dominant force shaping its climate. An earlier analysis concludes that, from the year 3480 BC, emissions by people have been higher than the amount it takes to negate the natural trend for the temperature to fall. From 3480 BC, forcing due to activities by people was stronger than the natural fall in temperature that would have eventuated in the absence of such activities. This makes the year 3480 BC most significant as a climate marker, and it makes sense to regard this both as the base for the temperature rise from pre-industrial and as the start of the Anthropocene.
End of the Anthropocene
At the Paris Agreement, adopted in 2015, nations pledged to limit the temperature rise to well below 2°C above pre-industrial levels, with efforts taken to limit it to 1.5°C above pre-industrial levels. The image below illustrates that, despite these pledges, these thresholds may already have been crossed.
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Humans are now functionally extinct
The situation is dire in many respects, including poor conditions of sea ice, levels of greenhouse gases in the atmosphere, extreme weather causing droughts, flooding and storms, land suffering from deforestation, desertification, groundwater depletion and increased salinity, and oceans suffering from ocean heat, oxygen depletion, acidification, stratification, etc. These are the conditions that we're already in now.
On top of that, the outlook over the next few years is grim. Circumstances are making the situation even more dire, such as the emerging El Niño, a high peak in sunspots, the Tonga eruption that added a huge amount of water vapor to the atmosphere. Climate models often average out such circumstances, but over the next few years the peaks just seem to be piling up, while the world keeps expanding fossil fuel use and associated infrastructure that increases the Urban Heat Island Effect.
http://arctic-news.blogspot.com/2023/03/we-are-now-in-the-suicene.html
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