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Post by P London on Jan 29, 2018 11:54:55 GMT -5
In the shout-box there was a discussion about what the world climate was like during the last glacial period. However I was thinking why not extend it to posting climate maps, articles on the history of Earth's climate? Here is good old Britain & Ireland during various periods of time from 16,000 years ago.  Discuss. |
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Post by Deleted on Jan 29, 2018 11:57:26 GMT -5
If doggerland still existed the UK's climate would be much more interesting. Bigger temp swings, bigger cold/heatwaves and more intense thunderstorms.
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Post by P London on Jan 29, 2018 12:00:10 GMT -5
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Post by Donar on Jan 29, 2018 12:37:07 GMT -5
47 million years ago (Eocene Epoch), my area was at 40 °N with a tropical rainforest climate. That was during the later period of the Paleocene–Eocene Thermal Maximum. Many details are known about that time in my area because of a very rich fossil site (the whole ecosystem is more or less preserved): en.wikipedia.org/wiki/Messel_pit |
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Post by Babu on Jan 29, 2018 12:44:03 GMT -5
Supposedly, Sweden had a subtropical/mediterranean/warm temperate climate 3000 years ago with wild grapes growing.
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Post by Babu on Jan 29, 2018 12:47:27 GMT -5
Fun fact: This map shows the exact location of Owen's hill.  |
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Post by Lommaren on Jan 29, 2018 12:50:15 GMT -5
Supposedly, Sweden had a subtropical/mediterranean/warm temperate climate 3000 years ago with wild grapes growing. Must be a warm oceanic climate in Scania? Something akin to Lorient of today rather than having hot summers? Maybe Lund resembled Le Mans though. I assume those warm periods have been more about weak winters than anything else up here  |
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Post by P London on Jan 29, 2018 13:13:35 GMT -5
Apparently not so long ago there were Hippos in the Thames. I'll get up an article later on.
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Post by P London on Jan 29, 2018 13:21:30 GMT -5
Elephants, rhinoceroses and aurochs (an extinct species of cattle) once roamed the forests of Europe, while hippopotamuses lived in the Thames and the Rhine, according to research. Studies on the fossils of dung beetles have revealed that temperate ecosystems in Europe consisted of a mosaic of forest and parkland, rather than just dense forest as originally believed. Dr Sarah Elton of Hull York Medical School said: "It was a bit warmer, maybe a Mediterranean climate". www.ibtimes.co.uk/hippos-thames-dung-beetle-fossils-reveal-elephants-rhinoceroses-roamed-prehistoric-europe-1438715 |
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Post by grega94 on Feb 2, 2018 6:57:43 GMT -5
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Post by Nidaros on Feb 5, 2018 16:15:04 GMT -5
A recent find in Norway (well, 2012) is acually slightly shocking: In the midst of the last ice age, spruce trees (or bushes) were growing at least two places in Norway: At Andøya in the far north (N of Lofoten) and in the Trondheim region (Trøndelag). Evidence is from DNA found in lake sediments. It even seems the spruce trees far North and West in Scandinavia are different from other spruce trees. So they might have survived here all through the ice age. It seems completely at odds with the most common theory about a large ice sheet covering pretty much all of Scandinavia. We might need to rethink the ice age in Scandinavia, or at least along the Norwegian coast. Link in Norwegian: forskning.no/skog-botanikk-dna-planteverden/2012/02/traer-i-norge-under-siste-istid |
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Post by Babu on Feb 13, 2018 6:01:58 GMT -5
Scientists have just found evidence supporting a theory which says that the last ice age was caused by a huge 100km diameter comet fragmenting, causing a bunch of meteorites that fell onto earth and created a huge fire covering 9% of the earth's surface. I.e. very similar to what killed the dinosaurs.
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Post by Nidaros on Feb 13, 2018 12:25:35 GMT -5
Scientists have just found evidence supporting a theory which says that the last ice age was caused by a huge 100km diameter comet fragmenting, causing a bunch of meteorites that fell onto earth and created a huge fire covering 9% of the earth's surface. I.e. very similar to what killed the dinosaurs. Can you provide a link about this? Would be interesting to see. Don't know if you are serious or joking, although that scenario you described is plausible. You know there have been a whole succession of ice-ages? Three ice-ages the last 300,000 years and many more before that. |
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Post by P London on Feb 13, 2018 12:40:22 GMT -5
Scientists have just found evidence supporting a theory which says that the last ice age was caused by a huge 100km diameter comet fragmenting, causing a bunch of meteorites that fell onto earth and created a huge fire covering 9% of the earth's surface. I.e. very similar to what killed the dinosaurs. Can you provide a link about this? Would be interesting to see. Don't know if you are serious or joking, although that scenario you described is plausible. You know there have been a whole succession of ice-ages? Three ice-ages the last 300,000 years and many more before that. We're still currently in an ''Ice Age'' Our current climate set up alternates between Glacial periods (like the one that ended 10,000 years ago) and glacial periods like the one we're currently in. en.wikipedia.org/wiki/InterglacialI read somewhere (probably Wikipedia or some other site) that interglacial periods are short lasted around 10,000 years so we should be slowly cooling. Glaciation should be increasing... www.theguardian.com/environment/2016/jan/13/fossil-fuel-burning-postponing-next-ice-ageI fail to believe that Humans are capable of halting a Glacial period for 100,000 years... |
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Post by Babu on Feb 13, 2018 12:40:49 GMT -5
Scientists have just found evidence supporting a theory which says that the last ice age was caused by a huge 100km diameter comet fragmenting, causing a bunch of meteorites that fell onto earth and created a huge fire covering 9% of the earth's surface. I.e. very similar to what killed the dinosaurs. Can you provide a link about this? Would be interesting to see. Don't know if you are serious or joking, although that scenario you described is plausible. You know there have been a whole succession of ice-ages? Three ice-ages the last 300,000 years and many more before that. I wouldn't have specified the "last" ice age would I? www.svt.se/nyheter/vetenskap/kosmisk-krock-tande-eld-pa-jorden This is where I read it |
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Post by Nidaros on Feb 13, 2018 15:10:50 GMT -5
Aha, according to your link, the comet fragments crashing into Earth might have caused the Younger Dryas at the end of the Ice Age. A period 12,800 years ago when the melting of Ice, which was in full swing, suddenly halted and the glaciers started growing again for a thousand year, before finally melting. Interesting stuff. Jury still out though. This might relieve us humans of some guilt about killing off the megafauna, as the comet fragments must share the blame, if indeed that happened.
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Post by grega94 on Feb 15, 2018 10:37:34 GMT -5
Aha, according to your link, the comet fragments crashing into Earth might have caused the Younger Dryas at the end of the Ice Age. A period 12,800 years ago when the melting of Ice, which was in full swing, suddenly halted and the glaciers started growing again for a thousand year, before finally melting. Interesting stuff. Jury still out though. This might relieve us humans of some guilt about killing off the megafauna, as the comet fragments must share the blame, if indeed that happened. I was about to say that baba was most likely referring to the Younger Dryas period. I heard of this theory quite a while ago, however there are other theories proposed as to why the trend reversed so quickly. One that is brought quite prevalently is that the influx of melted fresh water entering the arctic disrupted ocean currents, preventing warm tropical water reaching the northern regions and thus significantly cooling the planet. I think this explanation is very viable considering that there were two other Dryas events, also known as stadials preceding this one as the globe was slowly warming. Oldest Dryas 16,050-13,050 BCE, Older Dryas 14,000-13,700 BP and of course as you mentioned Younger Dryas 12,900 to 11,700 BP. Like wise there were interstadials, Bølling oscillation 14,700 and 14,100 BP, Allerød oscillation 13,900 to 12,900 BP, and then of course the current Holocene starting 11,700 BP. However even within the Holocene there were some notable periods such as the warmer Holocene climatic optimum 9,000 to 5,000 years BP. |
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Post by Donar on Oct 21, 2022 8:21:55 GMT -5
A recent study has reconstructed the climate of Frankfurt in the Pliocene era (~3 million years ago) based on a reassessment of detailed leaf fossils found in a clay lense. The flora had a high diversity of conifers and consisted of many genera now extinct in Europe due to the ice age, such as Magnolia, Ginkgo, Sequoia, Hickory or Cephalotaxus . Apparently, this flora was most similar to modern vegetation in East Asia. Compared to present-day Frankfurt this flora required a warmer and wetter climate without a drying trend in summer akin to present European climates of Lugano or Udine.
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