Mushroom
Gold Member
Regional mush not pertinent to "manmade climate disasters in the world today."
"Regional". Yet there are known impacts on all 7 continents.
Simply denying without providing actual evidence is almost always a fail.
As is using Wikipedia. That is almost always a failure as a reference.
A new study published in Geophysical Research Letters shows that the so-called Little Ice Age—a period stretching from 1500 to 1850, during which mean temperatures in the northern hemisphere were considerably lower than present—exerted effects on the climate of South America.
Research shows how the Little Ice Age affected South American climate
A new study published in Geophysical Research Letters shows that the so-called Little Ice Age—a period stretching from 1500 to 1850, during which mean temperatures in the northern hemisphere were considerably lower than present—exerted effects on the climate of South America.
During the last glacial cycle low gradient glaciers repeatedly drained north-eastward into the Strait of Magellan and dammed extensive proglacial lakes in the central section of the strait. This paper focuses on the two most recent glacial advances in the strait, culminating over 150 and 80 km from the present ice limits. The timing of the first of the two advances has, up to now, been ambiguous and depended on the interpretation of anomously older dates of 16,590–15,800 yr BP for deglaciation at Puerto del Hambre. Here, we show there is evidence from seismic data and truncated shorelines that the Puerto del Hambre basin has been tectonically displaced and that the dates do not represent minimums for deglaciation. Several other dates show that the advance occurred sometime before 14,260 yr BP. The timing of the second advance has been investigated using a refined tephrochronology for the region, which has also enabled a palaeoshoreline and glaciolacustrine sediments to be linked to a moraine limit. 14C dating of peat and a key tephra layer, above and below the glaciolacustrine deposits, respectively suggest that the advance culminated in the Strait of Magellan between 12,010 and 10,050 yr BP.
The research, published in Quaternary Science Reviews, suggests that eastern Australia, including Melbourne, Sydney and Brisbane, was much drier after 1890 than the Little Ice Age period that preceded it.
"We found that the Little Ice Age, which lasted from about 1500-1850, was much wetter than periods before or after it," says lead researcher Associate Professor John Tibby, from the University of Adelaide's Department of Geography, Environment and Population.
"This extended period of wetness is likely to have had a fundamental impact on the way Indigenous people occupied and used the landscape, the nature of ecosystems encountered by early European settlers, and in particular, the nature and magnitude of the impact of European occupation," he says.
Rethinking Australia's climate history
Researchers at the University of Adelaide have found evidence of climate change that coincided with the first wave of European settlement of Australia, which effectively delivered a double-punch of drying and land clearance to the country.
The Little Ice Age (LIA) is one of the most prominent climate shifts in the past 5000 yrs. It has been suggested that the LIA might be the most recent of the Dansgaard–Oeschger events, which are better known as abrupt, large scale climate oscillations during the last glacial period. If the case, then according to Broecker (2000a, 2000b) Antarctica should have warmed during the LIA, when the Northern Hemisphere was cold. Here we present new data from the Ross Sea, Antarctica, that indicates surface temperatures were ~ 2 °C colder during the LIA, with colder sea surface temperatures in the Southern Ocean and/or increased sea-ice extent, stronger katabatic winds, and decreased snow accumulation.
See that? That's known as "research" and using "references".
If you want to be seen as somebody other than one who lives under a bridge, you need to learn how to actually back up your claims with research and references. Simply shaking your head and ignoring anything you do not like is a guaranteed failure.