John Kennedy

@micefearboggis

Climate scientist, diagram monkey, probabilistic historian. All views and opinions are my own. This is not, sadly, a promise of novelty: it's a disclaimer.

diagrammonkey.wordpress.com
Joined July 2012
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  1. Pinned Tweet
    27 Nov 2014

    List of climate monitoring resources: If you know of any not on the list, let me know!

    10 replies 42 retweets 51 likes
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  2. 9 hours ago

    For comparison here's AR5 WG1 "Continuing the trends reported in AR4, the annual Arctic sea ice extent decreased over the period 1979–2012. The rate of this decrease was very likely between 3.5 and 4.1% per decade (0.45 to 0.51 million km2 per decade)."

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  3. 9 hours ago

    I'm intrigued by the IPCC SROCC SPM conclusion A1.4: "Between 1979 and 2018, Arctic sea ice extent has very likely decreased for all months of the year." Does that mean that there's a non-zero chance that it has increased over that time frame in one month or more?

    3 replies 2 likes
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  4. 9 hours ago

    The IPCC Special Report on the Ocean and Cryosphere in a Changing Climate is out. It's available here: It's nice to have to hand when reading popular distillations and tweet thread summaries of the content.

    2 retweets 4 likes
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  5. Retweeted
    14 hours ago

    In an hour special report on + will hit the streets (so to speak); on Monday issued their five year summary. As it may have got a bit lost here is a brief (hopefully) thread of some of those "highlights" to set the context for

    3 replies 38 retweets 56 likes
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  6. 11 hours ago

    If I have 24 temperature readings taken hourly (units °C) through the course of a single day and I take their mean to get a daily-average temperature, what units does the daily-average temperature have?

    11 replies 2 retweets 1 like
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  7. Retweeted
    Sep 23

    Carbon is one of the most important elements on the planet. I’ve just found a bunch of great infographics on the carbon cycle published by The UK Geological Society for the 2019 year of and I have to share them

    4 replies 58 retweets 98 likes
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  8. Retweeted
    Sep 21

    Johann Pachelbel's Canon in D, performed on rubber chicken, has renewed my faith in mankind.

    1,482 replies 32,692 retweets 93,796 likes
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  9. Retweeted
    Sep 22

    what is the best tool/interactive/website online you are aware of?

    16 replies 16 retweets 79 likes
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  10. Retweeted
    Sep 19

    New post. European Meteorological Society Meeting highlights on station data quality and communication (now with working link)

    1 reply 3 retweets 1 like
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  11. Retweeted
    Sep 18

    Decadal average global mean temperature anomalies from HadCRUT4.6.0.0 relative to 1961-1990. Since the 1980s, each successive decade has been warmer than the last, with the 2010's the warmest on record.

    Decadal average global mean temperatures from the HadCRUT4 data set. Each successive decade from the 80s to the 00s was warmer than the last and the most recent decade 2010-2019 is the warmest decade on record.
    3 replies 38 retweets 35 likes
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  12. Sep 18

    You can see that HadCRUT4 is on the cooler side. Two reasons: sea-surface temperature biases (since fixed in HadSST4) and the hole-at-the-pole.

    2 retweets 2 likes
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  13. Sep 18

    A similar plot also shows the decadal averages for GISTEMP, NOAAGlobalTemp and BerkeleyEarth.

    1 reply 2 retweets 2 likes
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  14. Sep 18

    Some previous discussion of this plot:

    1 reply 2 likes
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  15. Sep 18

    Note that the latest decade is still a few months short. The uncertainty range is slightly expanded to account for this.

    1 reply 3 likes
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  16. Sep 18

    Decadal average global mean temperature anomalies from HadCRUT4.6.0.0 relative to 1961-1990. Since the 1980s, each successive decade has been warmer than the last, with the 2010's the warmest on record.

    Decadal average global mean temperatures from the HadCRUT4 data set. Each successive decade from the 80s to the 00s was warmer than the last and the most recent decade 2010-2019 is the warmest decade on record.
    3 replies 38 retweets 35 likes
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  17. Retweeted
    Sep 15

    New paper published: Development of Surface Drifting for Fiducial Reference Measurements of Sea-Surface Temperature

    , , and 4 others
    1 reply 11 retweets 21 likes
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  18. Retweeted
    Sep 16

    As a reminder, is having a climate change visualization contest (deadline Sept. 20). I'm planning to toss in a few of my favorite animations and would encourage other climate graphics people to do that same.

    Today we're launching a visualization competition in support of the movement. Share your latest & greatest visualization projects that help make sense of the ! 🦋 🌏 Details & submission:
    2 replies 8 retweets 32 likes
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  19. Retweeted
    Sep 16

    June-August 2019: the planet's warmest Northern Hemisphere summer for at least 140 years, and likely much, much longer.

    3 replies 128 retweets 191 likes
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  20. Retweeted
    Sep 16

    New HadSST4 page improves our discussion of the latest global, long-term SST datasets. Valuable dataset with impressive documentation of uncertainties. Thanks to for expert guidance.

    1 reply 7 retweets 20 likes
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  21. Sep 15

    11/8 It’s Monday.

    3 likes
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