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Katrin Fridriks

earth temperature history timeline

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earth temperature history timeline

riversedge (author) from Delaware River Valley on July 11, 2008: That's precisely the concern that climate experts are worried about: whether we will act in time. This is known as the faint young sun paradox and is usually explained by invoking much larger greenhouse gas concentrations in Earth's early history, though such proposals are poorly constrained by existing experimental evidence. Before 1850 the temperature is an estimate based on the sources given. I'm starting to convert to the new, lower-energy, lower-emission lightbulbs. It is disgusted by the new changes and proclaims: Just below the previous entry also at 1200 BCE is the mentioning of the invasion of the. These classic myths were written more than 300 years after their supposed events. Now an atmospheric history lesson - Cambrian Oxygen 12.5% - Carbon Dioxide 0.45% - Average Temp. is 35% higher than when Industrial Revolution began, is higher than any period in last 420,000 years, is primary cause of temperature increase (not the other way around), may rise by 2-6°C ... 4-11°F in the 21st Century, in the last 10,000 years (Holocene Epoch) when we developed the foods that support us and the fruits of our civilization, since the middle Pliocene Epoch three million years ago when sea level may have been 25 meters or 80 feet higher than today. They feature in many xkcd comics, such as, [To the right of the dotted curve is an arrow pointing down and slightly left. The earlier Sturtian glacial maxima (~730 million years) may also have been a snowball Earth event though this is unproven. 17 °C - sea level 0 meters The colder years are referred to as periods of glaciation and the warmer years as periods of interglaciation. Or the file got renamed without updating the sites? Here is table including all elements in the chart with explanations including reading off temperature and year for each event from the curve. --JayRulesXKCD (talk) 11:56, 13 September 2016 (UTC), Maybe someone should add the fact that the transcript may be a reference to oxidation?Transuranium (talk) 19:21, 13 September 2016 (UTC)Transuranium, Is nobody else having a problem seeing the comic? T (°C) is the number of degrees Celsius above or below the 1961-1990 average, which on this graph is set to zero, (i.e. [9] Further information is given on the graph description page. [1]. Ice sheets retreat across the Canadian border. Another badly written piece to scare you. The first curve bending down before the others, and thus to the right of the other two reaches about 1.2°C above the 1961-1990 average and then goes straight down and stops at the 2100 line. This is not a fast warm up, especially not compared to the one we are currently experiencing (at the bottom of the chart). At some point, there must be an irreversible tipping into the world of 3 million years ago. 21 °C - sea level 30 - 90 meters Not convinced? Run, you clever boy (talk), I posted a question on Earth Sciences Stack Exchange about how the Younger Dryas fits into this comic: http://earthscience.stackexchange.com/q/9103/6973, There was also an existing question about the chart's general accuracy: http://earthscience.stackexchange.com/q/8746/6973, --Aaron Rotenberg (talk) 02:53, 14 November 2016 (UTC), The translation of the explanation in "Telegraph", written in Morse code, is: "Now, the mother of Samuel Morse always sent the lad out on a horse." The year zero has since been added for ease of mathematical and astronomical calculations. --- .-- --..-- / - .... . Current However, the URLs below in that linked Imgur gallery's first caption were rendered unclickable, probably for spam protection measures, so I reproduce them here: JSalsman (talk) 15:02, 22 September 2016 (UTC), - Frankie (talk) 23:41, 8 October 2016 (UTC), Hey, I had a great time scrolling down and watching the earth heat up :).108.162.245.115 19:47, 17 October 2016 (UTC), ICYMI, Cato provides an IPCC MAGICC climate model simulator for anyone to examine. And likewise into the future the three possible curves are also dotted to show that they are predictions, based on how seriously the population of Earth takes knowledge (and comics) like this. .-.. / -- --- .-. .-. The central part of the element has mainly been used. It will stay in this range for the next 2000 years. After one dot it splits in two and after the first two dots another split between them occurs forming three possible future dotted curves.]. 350 | Global Warming. This was a slow process that takes 10,000 years. Plastic bags were not outlawed, but carrying them became socially unacceptable. The image attributes climate data sources as "Shakun et al. Oxygen 15% - Carbon Dioxide 0.22% - Average Temp. (Old guy in Sumer: Kids these days with their new-fangled stone tablets, instead of using their memory...), Earliest human whose name we know (Pharaoh, The first named person we know of today! Both here and on XKCD I get an "Image not found" icon, a blue question mark. Very. Any money currently used for most plans to reduce CO2 (which usually fails to reduce CO2, not speaking about global warming, but succeed in their main goal, which is moving the money into pockets of their proponents) would be better spent on ADAPTING to the change. The time given here references when Christopher Columbus reached the, From here on, the chart has labels for each 100 year increment instead of 500, but the scale stays the same. But it was only 10,000 or so years ago that we learned how to grow our own food, a development that led to the creation of fixed communities, the division of labor and all the benefits of what we call civilization. This faux-extinction is likely a reference to the. The Boston image is directly taken from. Randall mentions this language family in many comics, such as, [To the right of the curve Ponytail holds up a hand towards Cueball.

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