More Detail On The NSIDC Disappearing Ice

From 1984 through 2011, the NSIDC new (left below) and old (right below) ice age versions were nearly identical.


Note the small discrepancy between the two versions in the graph below. The amount of five year old ice was almost identical between the two versions.


In 2012, the versions started to diverge. Four and five year old ice began to disappear from the new version,


By 2013, the new version had lost more than half of the five year old ice.


Their methodology is to track ice flows week to week.  The two versions tracked each other very closely for over 1,400 weeks, and then suddenly began to rapidly diverge. What scientific basis could this have? You don’t just lose 500 km² floes of thick multi-year ice.

The fact that they have a 100% discrepancy between the new and old versions in the amount of five year old ice, tells me that their data and graphs are completely worthless for doing year over year comparisons since 2011.

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9 Responses to More Detail On The NSIDC Disappearing Ice

  1. Doc B says:

    Artic sea ice looking good today. Will be interesting to see if these images get adjusted.

  2. Doc B says:

    That image is actually marked 4/20. These images were not available for a while, not sure how reliable it is.

  3. wert says:

    They kept digging and digging and found their Leader was right. There was no more ice and they could finally draw a linear regression to zero in 2015

  4. frederik wisse says:

    Will the next Snowdon please raise from his seat ?

  5. Jurg Burg says:

    I’m wondering what effect large scale ice-breaking has on the long-term ice growth? There are proposals to have icebreakers going for 10 months this year to keep shipping lanes open. Aside from the impact on Inuit communities and polar bears, surely this will have an impact on multi-year ice growth….?

    • Billy Liar says:

      I have long thought that the ice loss in the Arctic is directly related to the number of miles of smashing up the ice undertaken every summer by the icebreakers of various nations.

      • Jurg Burg says:

        Have there been any studies on this?

        • Billy Liar says:

          Not to my knowledge. Ice breakers of many nations seem to go to the pole simply because they can, unless of course they’re Russian and full of paying tourists.

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