<grumble> why can't I find a high resolution record for #CO2 or CH4 from Greenland #icecore ? I mean, really... ~200 year resolution in the #Holocene is just not good enough. And output from a model (Kleinen) is not what I want. I want a Koehler-2017-equivalent for #Greenland ! #Followerpower

Art and science intersect: "Little pieces of Antarctica were melting: cross-sections of an ice core...Artist Porras-Kim found another kind of collection, at the Ice Core Facility, where about 25,000 meters of ice are neatly stashed in metal tubes within a giant freezer kept at -38 C. About 2,000 meters a year are deaccessioned to make room for new samples; this is how Porras-Kim was able to obtain the cores for her exhibition." https://www.nytimes.com/2024/04/05/arts/design/gala-porras-kim-denver.html?ugrp=m&unlocked_article_code=1.iE0.anoK.bJYOABOBZBCE&smid=url-share #art #science #climate #icecore #museum

Just remembered having read a paper this year where a team had drilled an #IceCore in the West of #Greenland and at the bottom of the core, where the drill had literally hit rock bottom, they ... found a plant leaf.
Indicating that West Greenland was not only ice free but ice free for long enough so soil for plant growth had existed.
The plant grew 400 thousand years ago in #MIS11 and the climate was 1.2C over pre industrial.

When I remembered, this paper just now, a plot occurred to me for a future novel on paleo climate scientists who look at West Greenland again. Like, maybe 400 thousand years into the future, when there will have been 3 more glacials with Greenland fully covered in ice. What will they find when their drill hits rock bottom?

We should place a #Tesla at the site where they found that plant leaf this year. Just put it on top of the still existing ice. It's heavy enough so it'll just sink lower and lower and also stay put once all ice has washed to the sea...

Does #Europe know just how awesome the #BeyondEPICA project is?
Drilling an *ancient* #iceCore in a very remote and very cold part of #Antarctica...
Good overview talk here at #ESSI

@DrEvanGowan posted a cool chart of 800 thousand years #PaleoClimate history https://fediscience.org/@DrEvanGowan/111375198866000253
His chart prompted me to update my girlie-coloured sheet with Rohling's #SeaLevel and Bereiter's CO2 from #IceCore . I usually plot Yamamoto's #CO2 from #LeafWax in the Gulf of Bengal because the time series is a few million years long, at lower resolution.
Picture 1 shows me how our Holocene compares with two contenders for the best-analogue-award, called MIS 11 (top) and MIS 5 (middle). The plots are centred on the deglaciation-trigger, the golden Precession cycle favouring the Northern Hemisphere. The lines are blue sea level, brown CO2, gold #SST in the #Atlantic between Ireland and Greenland, red SST South of Africa.
Picture 2 shows 800ky years of the same and tells me the broader context. I guess, the Holocene would have followed MIS 5 – a bit longer because the current precession cycle favouring Southern summer is still within the Tilt cycle. (also see ALT)

Ice Core From Secret Cold War Army Mission Reveals Greenland Melted Recently
A large portion of Greenland was an ice-free tundra landscape—perhaps covered by trees and roaming woolly mammoths—in the recent geologic past (about 416,000 years ago), a new study in the journal Science shows.
https://scitechdaily.com/ice-core-from-secret-cold-war-army-mission-reveals-greenland-melted-recently/ #greenland #IceCore #melting #warming

Interrupted holidays to give a quick talk at UTAS today, got an ice core lab tour in exchange! Worth it.

After #COVID delays, the #IceCore drilling camp ( @egripcamp ) in North East #Greenland is back up and running again this season and will soon hit the base of the
This is a cool thread showing how deep the core is from @agrinsted + @iceadvice

https://fediscience.org/@iceadvice/110436990668023814

Had not realised this one was out.

A new #IceCore is planned at #MullerIceCap on #AxelHeibergIsland and @agrinsted & Ann-Sophie Zinck have tried to estimate the thickness of the #IceCap, partly using our #HIRHAM5 simulations...

Will be interesting to see how close they are!
https://tc.copernicus.org/articles/16/1399/2022/

Writing up field notes, downloading data and backing up photos today. I've taken 790 photos and video over the last 12 days.
And probably collected enough data to keep me going for 2 years or so.

We're lucky to be working with local hunters, they are exceptionally helpful and do a lot of the practical on #ice work with us.

Also a whole bunch of new ideas to sort through and think about for next year.

#Antarctica #millionYearIceCore
#millionYear #IceCore #millionYearCore #coreSample #coreSamples #iceCoreSample #iceCoreSamples

#LivingTraverse #caravan #SoCold #stayWarm #ice #oldestIce

#science #research #scientificResearch #researcher #Antarctic #researchers #AntarcticResearch #AntarcticResearcher #AntarcticResearchers #study #samples #takeSamples #takingSamples #HistoryOfTheEarth #IceAges #warmPeriods #ClimateChange

https://www.antarctica.gov.au/news/2022/million-year-milestone-traverse-sets-course-toward-the-oldest-ice/

Fascinating talk from J P Steffensen of #nielsBohrInstitute on the ravages that a 2 year #COVID19 gap in visits to #EGRIPcamp.

The #icecore science trenches needed completely reconstructing, it took 2.mobths to dig out the camp, all done by hand!
Amazingly they even managed to start taking #EGRIP ice core again...
#DKviden #GreenlandIceSheet