The Siberian permafrost is melting, but that has been happening since
the end of the last ice age about 10,000 years ago.
Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt
end of the last ice age about 7,000 years ago marking the beginning of the modern climate era — and of human civilization.
It began at
the end of the last Ice Age about 11,500 years ago, and we are still in it.
According to the report, which follows a series of comprehensive reports from the IPCC in the past year on climate science and impacts, temperatures already have increased by 0.85 degrees Celsius since 1880, a more rapid shift in the climate than that which heralded
the end of the last ice age about 10,000 years ago.
Not exact matches
That's consistent with the fossil record, which shows glyptodonts evolved from medium - sized forms (
about 80 kilograms) to become true megafauna in the Pleistocene (reaching 2,000 kilograms) before their disappearance at the
end of the
last ice age.
Like many parts
of the world during the most recent
ice ages (the
last of which
ended about 12,000 years ago), Australia had its share
of weird giant animals, including a supersized relative
of the Komodo dragon, today's largest land lizard.
In the middle
of Lake Huron, however, such lanes could have been buried when lake water levels rose rapidly
about 7,500 years ago, after the
end of the
last ice age.
There is some debate
about when the «Little
Ice Age» — the
last time when global average temperatures were falling —
ended, but it is well documented that glaciers started receding around that time as a result
of the relative warming
of the planet.
Unvegetated terminal moraine from Nahanni National Park, NWT, Canada dating to the
end of the
last ice age (
about 13,800 years ago).
However, the big unknown remaining is whether corals can adapt to global warming, which is now occurring at an unprecedented rate — at
about two orders
of magnitude faster than occurred with the
ending of the
last Ice Age.
New discoveries
about the demise
of the
ice sheet that covered Western Canada at the
end of the
last ice age offer a preview
of what we can expect as
And there are plenty
of important questions to resolve
about the climate
of the Holocene — this comfy warm interval humans have enjoyed since the
end of the
last ice age — before the human influence on the system built in recent decades.
Global sea level rose by
about 120 m during the several millennia that followed the
end of the
last ice age (approximately 21,000 years ago), and stabilised between 3,000 and 2,000 years ago.
To figure that out, scientists have been looking back to the
end of the
last ice age,
about 11,000 years ago, when global temperatures stood at roughly their current levels.
The several - year figure is apropos
of the suddenness with which the
last ice age ended about 15,000 years ago in the Northern Hemisphere, e.g., «the
last ice age came to an abrupt
end over a period
of only three years.»
Human - forced warming is currently
about 20 times faster than warming at the
end of the
last ice age.
Concerns
about the origin
of melt water pulse 1A during the
end of the
last ice age led to investigation
of large Antarctic melt pulses as a potential source.
And with human warming now proceeding at a pace
about 20 times faster than the
end of the
last ice age, the risk for rapid melt has been greatly enhanced.
In fact, since the
end of the
last ice age, there were four periods — each
about 1,000 years long and peaking roughly every 3,000 years — that saw a substantial number
of much more intense, scouring floods.
AFAIK man was certainly on the planet long before the
end of the
last ice age, when there was an
ice cap covering a great deal
of the Northern hemisphere land mass (I don't know
about the Southern).
There is a new hockey stick in town, one with a shaft extending back all the way back to the
end start
of the holocene
about 12,000 years ago when the
last ice age ended:
The Harper government has tightened the muzzle on federal scientists, going so far as to control when and what they can say
about floods at the
end of the
last ice age.
Since the
last ice age, which
ended about 11,000 years ago, Earth's climate has been relatively stable, with an average global temperature
of about 14 °C.