Only 6,000 years ago the world was warmer and the Sahara was lush, green and wet

[rangerrebew]

Only 6,000 years ago the world was warmer and the Sahara was lush, green and wet
By Joanne Nova |July 3rd, 2023

During the hottest part of the Holocene, for thousands of years, there were deep lakes filled with water in the middle of the Sahara Desert. From 9,500 years ago to 6,000 years ago the monsoons rained on the Sahara, freshwater plankton frolicked in the lakes, and greenery grew far and wide. The wetter conditions made it possible for  “widespread human occupation and the development of agriculture across North Africa”. Amazingly, that last quote comes from Kuper and Kropelin fully seventeen years ago. Strangely the UN experts don’t mention very often that in the warmer world not that long ago, the hyperarid Sahara desert was rich, green and filled with water? We wouldn’t want people to start wondering if climate change might mean Chad and Libya could be nicer places for Africans to live? Instead we’re told that global warming will turn into our whole world  into the Saharan desert, only to find out that in a warmer world even the Sahara didn’t turn into the Saharan Desert.

There once was a lake here…

Yacoub et al. Paleolake, Chad. Holocene.
Era Kohor, northern Chad.

The new study by Yacoub et al shows how the water came and went in more detail, in the Tibesti Volcanic Massif (TVM) of northern Chad, but they cite twenty years of other studies that show a lost rich Saharan wilderness. The period is quietly known in academic circles as the African Humid Period (AHP).

So yet again we find that the climate on Earth has always changed, that lakes, forests, and rainfall came and went without any input from coal fired plants or SUV’s and that solar panels probably would not have saved the once great green Sahara from turning into a hyperarid desert. We claim to have expert climate models, but we don’t really know why these big shifts happen, or how fast they occurred or what caused them — they are vaguely “linked” to the changes in sunshine that happen due to our orbit.

https://www.cfact.org/2023/07/03/only-6000-years-ago-the-world-was-warmer-and-the-sahara-was-lush-green-and-wet/

[rangerrebew]

Hottest day “in human history” was cooler than most of the holocene
By Jo Nova

The “hottest day” is not that hot, and very irrelevant
So the news cycle went hyperbolic over a single dubious hot day in records that only go back 0.01% of human existence. Remember when “30 year trends” were all that mattered?

Let’s ignore for the moment that the error bars on measurements of global temperature in 1899 would make any normal scientist blush. Who believes for one minute even today we can measure the global surface temperature to one hundredth of a degree? The cringeworthy insignificant digits were everywhere.  On Monday the Earths surface was supposedly 17.01 degrees Celsius for the first time in “human history”. Then Tuesday it was 17.18C, Hallelujah.  Who are we kidding?

Probably the biggest lie was to call this “human history” as if the ancient Egyptians were measuring the temperature on Earth and every day of the week. Are we really sure we know what the temperature was on July 3, 2201 BC? Maybe it was 17.31C that day — prove me wrong? We have no idea how hot the “hottest days” were for 99% of human civilization. The best proxies we have can’t tell us what the temperature was for 24 hour periods. We can’t compare 20 year smoothed averages with a single 24 hour snapshot. Well, scientific prostitutes can, but not real scientists.

https://joannenova.com.au/2023/07/hottest-day-in-human-history-was-cooler-than-most-of-the-holocene/

[Idiot]

Hottest day “in human history” was cooler than most of the holocene
By Jo Nova

The “hottest day” is not that hot, and very irrelevant
So the news cycle went hyperbolic over a single dubious hot day in records that only go back 0.01% of human existence. Remember when “30 year trends” were all that mattered?

Let’s ignore for the moment that the error bars on measurements of global temperature in 1899 would make any normal scientist blush. Who believes for one minute even today we can measure the global surface temperature to one hundredth of a degree? The cringeworthy insignificant digits were everywhere.  On Monday the Earths surface was supposedly 17.01 degrees Celsius for the first time in “human history”. Then Tuesday it was 17.18C, Hallelujah.  Who are we kidding?

Probably the biggest lie was to call this “human history” as if the ancient Egyptians were measuring the temperature on Earth and every day of the week. Are we really sure we know what the temperature was on July 3, 2201 BC? Maybe it was 17.31C that day — prove me wrong? We have no idea how hot the “hottest days” were for 99% of human civilization. The best proxies we have can’t tell us what the temperature was for 24 hour periods. We can’t compare 20 year smoothed averages with a single 24 hour snapshot. Well, scientific prostitutes can, but not real scientists.

https://joannenova.com.au/2023/07/hottest-day-in-human-history-was-cooler-than-most-of-the-holocene/