The real cause of the little ice age

Apr 2013
36,150
24,583
Left coast
#1
So many people were killed when Europeans first conquered and settled the Americas that a large number of acres of cropland was allowed to revert to forest, pulling that much CO2 from the atmosphere that temperatures dropped. The Maunder Minimum didn't do dick.

Or so a new study from University College London, UK. says.

America colonisation ‘cooled climate’

Makes more sense to me. The article lists the reasoning and where the data comes from for those who want to dig.

Here's the actual paper. https://reader.elsevier.com/reader/...8F50F440DD34DE1E140401D9F53DF4031164E61BB0238
 

imaginethat

Forum Staff
Oct 2010
66,048
26,460
Colorado
#2
To not fall into the habit of the deniers who assume one cause at a time is responsible, perhaps the regrown forests and low sunspot activity combined to cool the climate.
 
Likes: roastpork
Apr 2013
36,150
24,583
Left coast
#3
To not fall into the habit of the deniers who assume one cause at a time is responsible, perhaps the regrown forests and low sunspot activity combined to cool the climate.
Wikipedia says that the most widely accepted reason for the little ice age is volcanic eruptions increasing atmospheric particulate concentrations.

The onset of the Little Ice Age also occurred well before the beginning of the Maunder minimum[15], and northern-hemisphere temperatures during the Maunder minimum were not significantly different from the previous 80 years,[17] suggesting a decline in solar activity was not the main causal driver of the Little Ice Age.
For those who mock Wikipedia, below are the source links.

Links:
Miller et al. 2012. "Abrupt onset of the Little Ice Age triggered by volcanism and sustained by sea-ice/ocean feedbacks" Geophysical Research Letters 39, 31 January; see press release on AGU website (retrieved 16 July 2015).

Was the Little Ice Age Triggered by Massive Volcanic Eruptions? ScienceDaily, 30 January 2012 (accessed 21 May 2012)

Owens; et al. (2017). "The Maunder Minimum and the Little Ice Age: An update from recent reconstructions and climate simulations". Space Weather and Space Climate. 7 (A33): A33. doi:10.1051/swsc/2017034
 

imaginethat

Forum Staff
Oct 2010
66,048
26,460
Colorado
#4
Wikipedia says that the most widely accepted reason for the little ice age is volcanic eruptions increasing atmospheric particulate concentrations.



For those who mock Wikipedia, below are the source links.

Links:
Miller et al. 2012. "Abrupt onset of the Little Ice Age triggered by volcanism and sustained by sea-ice/ocean feedbacks" Geophysical Research Letters 39, 31 January; see press release on AGU website (retrieved 16 July 2015).

Was the Little Ice Age Triggered by Massive Volcanic Eruptions? ScienceDaily, 30 January 2012 (accessed 21 May 2012)

Owens; et al. (2017). "The Maunder Minimum and the Little Ice Age: An update from recent reconstructions and climate simulations". Space Weather and Space Climate. 7 (A33): A33. doi:10.1051/swsc/2017034
Thanks, I had forgotten that theory. From the last link"

While the MM occurred within the much longer LIA period, the timing of the features are not suggestive of causation and should not, in isolation, be used as evidence of significant solar forcing of climate. Climate model simulations suggest multiple factors, particularly volcanic activity, were crucial for causing the cooler temperatures in the northern hemisphere during the LIA. A reduction in total solar irradiance likely contributed to the LIA at a level comparable to changing land use.

Fast forward to right now.

Spotless Days
Current Stretch: 3 days
2019 total: 17 days (50%)
2018 total: 221 days (61%)
2017 total: 104 days (28%)
2016 total: 32 days (9%)
2015 total: 0 days (0%)
2014 total: 1 day (<1%)
2013 total: 0 days (0%)
2012 total: 0 days (0%)
2011 total: 2 days (<1%)
2010 total: 51 days (14%)
2009 total: 260 days (71%)
2008 total: 268 days (73%)
2007 total: 152 days (42%)
2006 total: 70 days (19%)

A slight correlation of sunspots and temperature appears to exist ... sometimes. :)
 
Nov 2012
40,148
11,612
Lebanon, TN
#5
So many people were killed when Europeans first conquered and settled the Americas that a large number of acres of cropland was allowed to revert to forest, pulling that much CO2 from the atmosphere that temperatures dropped. The Maunder Minimum didn't do dick.

Or so a new study from University College London, UK. says.

America colonisation ‘cooled climate’

Makes more sense to me. The article lists the reasoning and where the data comes from for those who want to dig.

Here's the actual paper. https://reader.elsevier.com/reader/...8F50F440DD34DE1E140401D9F53DF4031164E61BB0238

American Colonizatin caused the Little Ice Age.. Hey Sherlock.. the Little Ice age began in the late 1200s early 1300s.. 192 years BEFORE the west discovered the Americas. Large Colonization did not begin until the 1600s
 
Dec 2016
4,800
2,469
Canada
#6
American Colonizatin caused the Little Ice Age.. Hey Sherlock.. the Little Ice age began in the late 1200s early 1300s.. 192 years BEFORE the west discovered the Americas. Large Colonization did not begin until the 1600s
Could you crack open a book or something for once! And I mean real history and science, not one that doesn't feature Adam and Eve riding dinosaurs!

The 12 and 1300's were the Medieval Warming Period for Europe...and no doubt much of the rest of the world...though a big caution flag needs to be thrown down every time these terms are used because they are discussing records kept almost exclusively in Europe and the North Atlantic/not the whole world. During that period of time, many viking adventurers like Lief Ericson pushed further west than ever before....discovering "Greenland"....disingenuously named because at that time it was mostly covered in ice sheets, but the Southwest Greenland was still habitable for the simple farmers from Scandinavia who established settlements and a few venturers moved on to Labrador and "Vineland"....believed to be somewhere in New England according to notes and records, but never discovered.

The problem was the weather started changing and the Medieval Warming turned into the 'Mini Ice Age' -- England had to permanently give up its vineyards and wine industry, year-round frosts destroyed crops and caused famines, riots and revolutions and the Viking settlements in Newfoundland and Greenland all had to be abandoned because of the extreme cold...the end.

The only thing new in these recent findings is that western anthropology is finally putting to rest the long discredited notion that America was only 'sparsely' settled...a myth that's usually concocted by colonizers (same shit gets told by Afrikaanders in South Africa and Euro-Jews who moved into Palestine) to excuse genocides caused by mass starvation, disease-spread and direct mass killing. And the full implications of the much more eco-friendly agriculture that was going on in most of North America back then meant higher carbon levels than after a population crash that ended farming and also forest management that was done for controlled hunts.
 
Likes: Clara007
Apr 2015
1,769
2,042
Stockport. UK
#7
American Colonizatin caused the Little lce Age
No it didn't. I have no idea if the theory is true or not, but colonisation was not the main cause of the depopulation.
The main cause was first contact between Europeans and Americans, this was enough to introduce the diseases into the continent wherein it then spread through the local population killing around 9 in 10 even before the overwhelming majority had ever seen a European.
 
Nov 2012
40,148
11,612
Lebanon, TN
#8
Could you crack open a book or something for once! And I mean real history and science, not one that doesn't feature Adam and Eve riding dinosaurs!

The 12 and 1300's were the Medieval Warming Period for Europe...and no doubt much of the rest of the world...though a big caution flag needs to be thrown down every time these terms are used because they are discussing records kept almost exclusively in Europe and the North Atlantic/not the whole world. During that period of time, many viking adventurers like Lief Ericson pushed further west than ever before....discovering "Greenland"....disingenuously named because at that time it was mostly covered in ice sheets, but the Southwest Greenland was still habitable for the simple farmers from Scandinavia who established settlements and a few venturers moved on to Labrador and "Vineland"....believed to be somewhere in New England according to notes and records, but never discovered.

The problem was the weather started changing and the Medieval Warming turned into the 'Mini Ice Age' -- England had to permanently give up its vineyards and wine industry, year-round frosts destroyed crops and caused famines, riots and revolutions and the Viking settlements in Newfoundland and Greenland all had to be abandoned because of the extreme cold...the end.

The only thing new in these recent findings is that western anthropology is finally putting to rest the long discredited notion that America was only 'sparsely' settled...a myth that's usually concocted by colonizers (same shit gets told by Afrikaanders in South Africa and Euro-Jews who moved into Palestine) to excuse genocides caused by mass starvation, disease-spread and direct mass killing. And the full implications of the much more eco-friendly agriculture that was going on in most of North America back then meant higher carbon levels than after a population crash that ended farming and also forest management that was done for controlled hunts.

I did crack open the history book... 1492 Columbus sailed the Ocean blue.

James town settled in 1610

Cortez did not come to Cuba until 1518
Little Ice Age
The Little Ice Age was a period of regionally cold conditions between roughly AD 1300 and 1850.


1518-1300 =218 years

1610 - 1300 = 310 years


So if it was the COLONIZATION OF THE NEW WORLD THAT CAUSED THE LITTLE ICE AGE....

Now the Native Americans colonized the Americas committing genocide of the pre- Clovis people about 10-15000 years ago.. so are you saying that the Native American's are the cause of the Little Ice age? and it took them 10,000+ years to create it?

The CAuse of the little ice age was 2 yes 2 major solar minimums, combined with 3 MAJOR volcanic eruptions.
 
Nov 2012
2,615
1,604
Rhondda
#9
The thing that bothers me is that everything suggests that a great number of Europeans 'discovered' America before Columbus. Were Spaniards peculiarly infected with disease? I don't doubt that meeting them killed of millions and millions, but I wonder what happened before!
 
Nov 2012
40,148
11,612
Lebanon, TN
#10
The thing that bothers me is that everything suggests that a great number of Europeans 'discovered' America before Columbus. Were Spaniards peculiarly infected with disease? I don't doubt that meeting them killed of millions and millions, but I wonder what happened before!
Yes, diseases were exchanged between both cultures.

but the colonization did not begin until the 1500s. 200 years after the beginnings of the little ice age.

There is evidence that the Vikings discovered the Americas few 100 years before Columbus.

The Vikings could not colonize the Americas because the fall of the Nordic sea power ended with the Little Ice age..