NSIDC Cheating Again

DMI shows Arctic sea ice extent increasing over the past three days.

Ocean and Ice Services | Danmarks Meteorologiske Institut

But NSIDC graphs show it declining.

Charctic Interactive Sea Ice Graph | Arctic Sea Ice News and Analysis

However, their maps show sea ice extent increasing.

Index of /DATASETS/NOAA/G02135/north/daily/images/2020/02_Feb/

I caught them cheating in 2012 as sea ice extent approached the mean. That time I got them to admit it.


NSIDC’s 2012 Nature Trick | Real Science

I’ve also caught them cheating with ice age in 2015.


NSIDC Caught Cheating – Yet Again | Real Climate Science

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4 Responses to NSIDC Cheating Again

  1. Steve Case says:

    Win the battles – lose the war. The climate wars and drum beating for democratic socialism is very depressing.

  2. Geez, how horrible. We PAY these guys to be truthful and accurate.

    Seems like the Climate Change Infrastructure is neither!!

    Great work Tony!! .. PJ

  3. Brian D says:

    These other 2 charts from other sources show meandering up and down the last few days. NSIDC lagging because of averaging method causing a lag? Bad data in the mix?


  4. wsb says:

    This May 2020 paper:
    analyses Antarctic Sea growth & melt cycles indicating “atmospheric pressure” is the driving variable;

    STATING “In each year of the satellite record, sea ice takes over 7 months to grow and less than 5 months to melt” with Fig#1 showing the rapid rate of melt in summer compared to relatively slow growth in autumn and winter.

    FURTHER “Melt rate is the characteristic of the annual cycle that varies the most between model years; the growth rate remains surprisingly consistent” ALTHOUGH “the differences are less than … the variability in SIE between different satellite products”.

    AND (discussion) “there are almost no atmospheric measurements over the sea-ice zone … we use climate model outputs to analyze the role of the CPT in driving the asymmetry in the annual cycle of SIE” AND “models show considerable deficiencies … they do tend to capture its asymmetric pattern … suggesting that the mechanisms driving the asymmetric cycle are already included in climate models”

    Given your comments about the accuracy of the data used in the Arctic Sea Ice Extent + NOAA Temp graphs, could your data trend software confirm or otherwise the accuracy of the data presented about Antarctica?

    Fig#1 [Nov-Dec] explains the repetitive tabloid December headline:
    “Record Melt in Antarctica: We Are in a Climate Emergency” https://www.newsweek.com/record-hit-ice-melt-antarctica-day-climate-emergency-1479326

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