Prof. Jason Box

@climate_ice

ice climatologist at Geological Survey of Denmark and Greenland, contemplating Greenland, Arctic and global climate issues. Views here my own. :-)

Copenhagen
Joined October 2008
1,026 Photos and videos Photos and videos

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  1. Pinned Tweet
    Jun 28

    How much does it actually snow in Greenland? A handful of hard numbers video [new version]

    3 replies 10 retweets 32 likes
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  2. Retweeted
    Sep 15

    The Rate of Global Warming During Next 25 Years Could Be Double What it Was In The Previous 50, a Renowned Climate Scientist Warns

    3 replies 21 retweets 46 likes
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  3. Retweeted
    Aug 31

    One ancient tree left standing alone in a massive clearcut. This is old-growth logging in British Columbia.

    29 replies 287 retweets 585 likes
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  4. Retweeted
    Sep 13

    From the Seattle Times

    5 replies 110 retweets 149 likes
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  5. Retweeted
    Sep 14

    Cryoconite holes in the surface of the ice sheet. Small, large, larger, largest. Dark particles and microbes absorbing solar radiation and melting into the ice surface creating pockets of water. They're great until you step in one.

    2 replies 11 retweets 71 likes
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  6. Retweeted
    Sep 12

    Update to my animation of COVID-19 spreading across the US, with more spikes smoothed out.

    35 replies 744 retweets 1,405 likes
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  7. Sep 12

    rewarding kayak to ascend 1750 m Illerfissalik, South Greenland

    3 replies 3 retweets 29 likes
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  8. Retweeted
    Sep 7

    Yesterday, - and 's - largest wind farm was inaugurated 💨 "Kriegers Flak" has a total capacity to cover the electricity consumption of approximately 600,000 Danish households 💡🏘️ A good day for the 🌿 Photos: Vattenfall

    , and
    37 replies 105 retweets 272 likes
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  9. Sep 6

    excellent overview of what's on the agenda for the Glasgow climate change summit follow

    2 replies 6 retweets 12 likes
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  10. Retweeted
    Sep 6

    The sheet experienced an odd melt season with low-melt conditions disrupted by the occasional extreme event. Melt measured at the ice sheet margin by was above average beyond uncertainty, but only in "the middle" -> not up north or down south.

    1 reply 20 retweets 43 likes
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  11. Retweeted
    Sep 2
    Replying to

    Most likely a mix of dust, microbes (algae, cyanobacteria.. ) and probably a bit of soot. The hydrophobic stuff stays on top when ice melts, increasing the melting further (feedback loop). It’s an ongoing research topic e.g. (or )

    1 reply 5 retweets 40 likes
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  12. Sep 2

    south Greenland ice as dark as ever this year

    3 replies 49 retweets 149 likes
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  13. Sep 2

    the bare ice in southern Greenland is as dark as I've seen

    29 replies 250 retweets 753 likes
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  14. Sep 2

    just completed major work for upkeep of QAS stations as part of the network on southern Greenland ice 😅

    3 replies 8 retweets 48 likes
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  15. Retweeted
    Aug 31

    "Between a third and half of the world’s wild tree species are threatened with extinction, posing a risk of wider ecosystem collapse"

    195 replies 2,147 retweets 5,800 likes
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  16. Aug 31

    serviced QAS_M today, southern Greenland ice, in the rain

    1 reply 21 retweets 87 likes
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  17. Retweeted
    Aug 27

    Our greenhouse in Narsaq, , is starting to take shape. Many thanks to all generous donors and those who helped with the build! Young trees will grow here to be replanted in the wild.

    1 reply 6 retweets 29 likes
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  18. Retweeted
    Aug 23

    Last week, we installed new weather stations on the ice sheet. For the first time, we are including gauges that measure rain. The recent rain event at Summit highlights the troubling urgency and timeliness of these measurements

    4 replies 56 retweets 169 likes
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  19. Aug 18

    the upper elevations of the Greenland ice sheet were considered the 'dry snow zone'. Yet, this year multiple rainfall and melt episodes are being recorded by new stations.

    From 2021, the Geological Survey of Denmark and Greenland (GEUS) is carrying forward the Greenland Climate Network (GC-Net), initiated in 1995 by Konrad Steffen at the University of Colorado under the support by NASA, NSF and later the Swiss Federal Institute for Forest, Snow and Landscape Research (WSL).
    6 replies 67 retweets 125 likes
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  20. Retweeted
    Aug 17

    Crazy amounts of wildfire smoke over the U.S. West from , and more 🔥

    2 replies 63 retweets 102 likes
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  21. Aug 17

    Farming squeezed out because laws give them a lower priority to water access than lawns video

    1 reply 4 retweets 14 likes
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