Settled Science Update

James Hansen claims the climate has been “pretty constant” for the last 10,000 years

ScreenHunter_380 Oct. 22 18.20

Tom Nelson on Twitter: “James Hansen claims the climate has been “pretty constant” for the last 10,000 years (30 sec mark)”

What Homer meant by stable, is ice-free.

“Examination of several proxy records (e.g., sediment cores) of sea ice indicate ice-free or near ice-free summer conditions for at least some time during the period of 15,000 to 5,000 years ago”

– Walt Meier NSIDC

Experts say that an ice-free Arctic would be catastrophic and unrecoverable, which apparently is the same as stable.


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20 Responses to Settled Science Update

  1. Robertv says:

    Forests existed at elevations that were higher than today – in areas that are presently covered by glaciers.

  2. SMS says:

    Mini ice age? Minoan Warm Period? Roman Warm Period? Medieval Warm Period? Holocene? All in the last 10,000 years. Earth’s climate has seen a lot of variation in the last 10,000 years, including the warm periods where we were hotter than we are now, without going Venusian. You have to bury your head in the sand pretty deep to claim we are headed for a climatic disaster.

  3. geran says:

    I actually tried to listen to him. I got to about 9 minutes.

    I challenge anyone to go longer….

  4. Jimbo says:

    A stable Arctic.

    We therefore conclude that for a priod in the Early Holocene, probably for a millenium or more, the Arctic Ocean was free of sea ice at least for shorter periods in the summer. This may serve as an analogue to the predicted “greenhouse situation” expected to appear within our century.

    Arctic sea ice cover was strongly reduced during most of the early Holocene and there appear to have been periods of ice free summers in the central Arctic Ocean. This has important consequences for our understanding of the recent trend of declining sea ice, and calls for further research on causal links between Arctic climate and sea ice.

    Calcareous nannofossils from approximately the past 7000 yr of the Holocene and from oxygen isotope stage 5 are present at 39 analyzed sites in the central Arctic Ocean. This indicates partly ice-free conditions during at least some summers. The depth of Holocene sediments in the Nansen basin is about 20 cm, or more where influenced by turbidites.

    ….Nevertheless, episodes of considerably reduced sea ice or even seasonally ice-free conditions occurred during warmer periods linked to orbital variations. The last low-ice event related to orbital forcing (high insolation) was in the early Holocene,…

  5. gregole says:

    So when are we going to get the ice-free Arctic? I was so looking forward to it – more mineral extraction, human settlement, better all-around I’d say. It’s like a broken promise.

  6. Chewer says:

    At least the twisted and neurotic doomsayers have the ACA to access for their medications 😉

  7. Anto says:

    Nice hat, Homer. Those new-fangled enviro bulbs sure can give the old chrome-dome a nasty burn.

  8. Brian G Valentine says:

    Hansen was billed as Climate Prophet, who gave an opening speech for the theatre group’s performance of the play, “Extreme Weather.”

    The group’s website summarizes the play as follows:

    “A major climate scientist, his colleague and lover, an Arctic scientist, wage fierce battle with his twin sister, a publicist for the energy industry, and her husband, a lobbyist, over scientific truth and an inherited wilderness estate. His wise-child daughter and her side-kick Uncle work to protect the natural world and sabotage its abusers.”

    • Brian G Valentine says:

      By the way the in retirement Hansen seems to have gone in for a “homeless” look, which could mean fewer Congressional appearances etc

  9. KTM says:

    My favorite part was where he said that confiscatory taxes of $100 per ton of CO2, crippling energy use so badly that fossil fuel use will drop by 52%, will “stimulate the economy” (starts at 9:00).

  10. KTM says:

    The last ~10 minutes is mostly James Hansen squirming as the useful idiots in the audience pepper him with angry comments about the Republican House, the Tea Party and the Koch brothers.

    His comment that liberal politicians are doing more harm than the conservatives really set them off.

  11. darrylb says:

    Wow, 12,000 years ago, I would be sitting on a glacier in southern MN.
    10,000 or 9,000 years ago, I would be swimming in Lake Agassiz, which was much larger than the five great lakes combined. Thankfully the water drained through a couple of outlets, one the great River Warren and left me with the lake I live on and 9,999 other lakes Actually there are about 15,000 lakes in Minnesota.
    When that drainage took place the oceans did rise at an incredible rate. Now, after the little ice. the glaciers have been melting and oceans rising at a slow rate for the last several hundred years.

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