Opening a can of worms. Met Mike, question on Global Warming
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Started by Jim_M - July 9, 2019, 3:51 p.m.

I saw an article the other day about some riverside civilization ruins were exposed because of a drought that lowered water levels to expose the village.  Now most Global Warming pundits would say that the city was exposed because of global warming.  But what was the reason the water levels were that low a couple hundred years ago.  I think you can figure out where I am going with this.

We hear these stories all the time.  Animals and people exposed in melted ice due to a thaw.  Cities and villages exposed because of drought.  All that tells me is that similar weather was experienced 100's if not thousands of years ago.  But you can't blame global warming on that.

By metmike - July 9, 2019, 4:11 p.m.
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Great observation Jim!

It was this warm 1,000 years ago during the Medieval Warm Period, then before that, the Roman Warm Period and before that, the Minoan Warm Period. 

Previous to that, between 5,000 to 9,000 years ago, it was MUCH warmer than this in the high latitudes during the Holocene Climate Optimum. 

Holocene climatic optimum


Temperature variations during the Holocene from a collection of different reconstructions and their average. The most recent period is on the right, but the recent warming is only seen in the inset.

The planet is greening up with the best weather and climate in at least 1,000 years for life and growing crops. The climate crisis does not exist in the real world. It only exists on speculative climate model computer simulations going out 100 years,  that have all been too warm and show no skill forecasting weather.........which so far, has been great for life.

We actually rescued the planet from extraordinarily low levels of beneficial CO2, with plants in a semi starvation mode 150 years ago. 

Carbon Dioxide Fertilization Greening Earth, Study Finds



From a quarter to half of Earth’s vegetated lands has shown significant greening over the last 35 years largely due to rising levels of atmospheric carbon dioxide, according to a new study published in the journal Nature Climate Change on April 25.

An international team of 32 authors from 24 institutions in eight countries led the effort, which involved using satellite data from NASA’s Moderate Resolution Imaging Spectrometer and the National Oceanic and Atmospheric Administration’s Advanced Very High Resolution Radiometer instruments to help determine the leaf area index, or amount of leaf cover, over the planet’s vegetated regions. The greening represents an increase in leaves on plants and trees equivalent in area to two times the continental United States.

globe of Earth from North Pole perspective
By metmike - July 9, 2019, 4:16 p.m.
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Here's one of my discussions that deal with previous warmings and has all the data/studies to prove it. Scroll down at that link to get it.

The rest of the discussions can be found here(I just added a new one last week):

By mcfarmer - July 9, 2019, 4:39 p.m.
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Ah, wasn’t it a reservoir, not a lake ?

By cutworm - July 10, 2019, 1:43 p.m.
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Worms , What kind of worms. I like worms. 

By Jim_M - July 10, 2019, 2:30 p.m.
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Rivers, lakes, ice, reservoirs….take your pick.  This was just a quick search.  But it's not hard to find stories about cities, villages, buildings, bodies, animals that have been exposed by receding water or melting ice.

By metmike - July 10, 2019, 3:07 p.m.
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Greenland's shrunken ice sheet: We've been here before

"What's really interesting about this is that on land, the atmosphere was warmest between 9,000 and 5,000 years ago, maybe as late as 4,000 years ago. The oceans, on the other hand, were warmest between 5-3,000 years ago," said Jason Briner, PhD, University at Buffalo associate professor of geology, who led the study."

Vikings grew barley in Greenland

Little Ice Age stopped corn cultivation

"The Greenland climate was a bit warmer than it is today (Medieval Warm Period), and the southernmost tip of the great island was luscious and green and no doubt tempted Eric the Red and his followers. This encouraged them to cultivate some of the seed corn they brought with them from Iceland.

The Vikings also tried to grow other agricultural crops. Their attempts to grow these crops and barley did not last long, however, as the climate cooled over the next couple of centuries until the Little Ice Age started in the 13th century.

“The Vikings couldn’t cultivate very much in the last decades they were in Greenland because the climate was too bad,” says Henriksen. “Corn needs a long growing season, and if that season is too short you can’t harvest seed for the next season.”

At some point the Vikings were no longer able to maintain the seed production for their food and drink, and that made it more difficult for them to survive."

By mcfarmer - July 10, 2019, 3:10 p.m.
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Big difference between an exposed city when a reservoir dries up than a lake.

Of course in the case of a reservoir drying up the city would have been on the banks of the river that was used to form the reservoir. 

By metmike - July 10, 2019, 3:46 p.m.
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Funny cutworm (-: