NASA’s Jay Zwally Does The Dirty Cherry Picking Deed

Jay Zwally (of ice-free Arctic in 2012 fame) is back at it. Look at what he told Fox News :

NASA chief cryospheric scientist H. Jay Zwally told that the melting has been increasing as the temperatures in Greenland have been increasing.

“Climate in the Arctic has been warming about three to four times more than the global average, and Greenland surface temperatures (observed by satellite and surface instruments) have been increasing about 2 degrees Celsius per decade during about the last 20 years,” he said.

Skeptics put the freeze on NASA ‘hot air’ about Greenland ice 

Why did he pick the last 20 years?  Because twenty years ago was the coldest period on record in Greenland.

Data.GISS: GISS Surface Temperature Analysis

Top scientist Zwally forgot to mention that current temperatures are cooler than the 1930s and that the long term trend since the 1920s is downward.

In 2007 he predicted an ice-free Arctic in 2012

This week, after reviewing his own new data, NASA climate scientist Jay Zwally said: “At this rate, the Arctic Ocean could be nearly ice-free at the end of summer by 2012, much faster than previous predictions.”

Arctic Sea Ice Gone in Summer Within Five Years?

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11 Responses to NASA’s Jay Zwally Does The Dirty Cherry Picking Deed

  1. dmmcmah says:

    Chylek and others from Los Alamos showed the 1930s was comparable to recent warming in Greenland:

    Click to access Greenland_warming_of_1920%E2%80%931930_and_1995%E2%80%932005_Chylek.pdf

  2. The old Seadog. says:

    Seems stories by this bloke should start “Zwally Lally told….” like…..

    Chicken Licken told Ducky Lucky …..

  3. Imagine of a sceptic cherry picked like that… you would never hear the end of it from Warmists.

  4. Brian G Valentine says:

    Mr Zwally is a little bit old to do this kind of thing. Someone in their 20’s – and this is explained by immaturity. Over 50+ years of age and questions about never having any judgement arise.

    Exceptions: If there is something in it for them.

    (Hansen – Loot. Gavin Schmidt – convincing Hansen that he is “SES material.”)

  5. Baa Humbug says:

    Here is a bit of Australianism for when you visit us Steve.

    An affable fool is called a WALLY.

  6. Vinnie says:

    I was amazed to see a totally misleading graphic on Fox last night that showed Greenland with “ice” and then the “Greenland melt”. Non-ice was shown as a dangerous, threatening pink. There was no clarification from the Fox talking head and the CLEAR message from the story as reported was that the ENTIRE Greenland ice sheet had melted down to bare rock.

    I knew there was a reason I had stopped watching The News. But I like to see Krauthammer on the Panel.

  7. Jay Zwally says:

    You guys got it wrong again about Greenland warming. And I see some of your comments are as nasty as before. I suppose you noticed sea ice minimum is record low in 2012.
    Jay Z

    • Hi Jay,

      It looks like Antarctica will likely break the record tomorrow for most sea ice ever recorded at either pole. It must be due to polar amplification.

    • chris y says:

      Jay Zwally-

      I faithfully supported your 2007 expert prediction of a ‘nearly’ ice-free Arctic this summer. That was a mistake. Or do you agree with Paul Ehrlich that your prediction was just a little scenario that you really didn’t say would come true? And if so, why should anyone ever listen to you again?

      It is staggering that, back in 2007, you were able to predict the Arctic summer storm that was responsible for much of the record (since 1979) sea ice minimum this year. This is a result worthy of a (real) Nobel prize.

      Please let us know when the definition of ‘nearly’ ice-free will be quantified into a falsifiable prediction, preferably in units that the public can understand, such as Manhattans, Rhode Islands or square furlongs.

      Please predict when you think the Arctic will be free of sea ice year-round.

      Please, please apply your storm prediction algorithm to tropical cyclones, where even month-ahead storm forecasts could save thousands of lives every year.

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