Paleoceanographer focused on abrupt climate change, ocean circulation, and the North Pacific.
Joined May 2019
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New paper! We look at ocean conditions in the Gulf of Alaska/N. Pacific during the last glacial/deglacial to try and discern whether certain time periods were more/less favorable for human movement along the coastal route from Beringia into N. America:
pnas.org/doi/10.1073/pnas.22…
Honored to be among this list of great writers and essays. Thanks to the editors @Longreads for the lovely words ❤️
Today as part of our "Best of" package, we're sharing the reported essays we loved in 2023. Read unforgettable work by @S_Praetorius, @JenSeniorNY, @npbowlin, Guy D. Middleton, and @tomvanderbilt longreads.com/2023/12/07/bes…
And of course thanks to the editors @NautilusMag for working with me on this piece! 🙏
Summer Praetorius retweeted
Today as part of our "Best of" package, we're sharing the reported essays we loved in 2023. Read unforgettable work by @S_Praetorius, @JenSeniorNY, @npbowlin, Guy D. Middleton, and @tomvanderbilt longreads.com/2023/12/07/bes…
Summer Praetorius retweeted
Check out my @Nature World View piece on the need for radical change within academic & scientific institutions to support deep and sustained public engagement so that we can rapidly increase our capacity for successful and equitable response to #ClimateChange!
Climate researchers need support to become scientist-communicators, says climate scientist Daniel Swain go.nature.com/3RwRYjm
Summer Praetorius retweeted
Attending #AGU23? There's a special After Dark event at the @exploratorium to celebrate the intersections between art and science - join us for a night of interactive creativity!
It was great to talk with @WeiPoints for this @nytimes piece on the new evidence that supports the 21,000-23,000 year age of the White Sands Footprints. Congratulations to @kathspringer and all the authors on their excellent work on this site!
nytimes.com/2023/10/05/scien…
I also thought I’d mention that the ages for human presence at @WhiteSandNps are compatible with one of our proposed ‘viable time windows’ for a coastal migration. We highlighted the interval between 24,500-22,000 yr ago as one such window.
pnas.org/doi/10.1073/pnas.22…
Summer Praetorius retweeted
Thousands of footprints pepper the salty expanse of White Sands National Park, preserving ancient vignettes in the sand. Now, a new study bolsters the controversial claim that humans left these tracks ~21,000-23,000 years ago!
My latest @nytimes
nytimes.com/2023/10/05/scien…
So excited to see this new paper out today in @ScienceMagazine by @kathspringer and many other @USGS scientists! These new dates support the LGM age (21,000-23,000 yr ago) of the White Sands Footprints.
science.org/doi/10.1126/scie…
Congratulations to my @USGS colleagues: @kathspringer, Jeff Pigati, Dave Wahl, Marie Champagne, and all the other coauthors on their excellent work in getting additional pollen and OSL dates on the White Sands Footprints! This is a game-changer!
Big news: USGS scientists & partners have confirmed, with 2 new lines of evidence, that human footprints found in White Sands Nat'l Park show that people lived in North America 21-23,000 yrs ago—much earlier than previously thought!
More here: ow.ly/9peJ50PTBGN
Imgs: NPS
ALT Human footprints at White Sands National Park. Image credit: NPS
ALT USGS scientist Jeff Pigati examines the layers of sediment while collecting pollen to help establish the age of the footprints. Image credit: NPS
ALT Scientists working in and near a trench at White Sands National Park, a sandy landscape with distant mountains in the background. Photo credit: NPS
ALT USGS scientists Kathleen Springer and Jeff Pigati work at the White Sands site, lying on the ground with their faces close to the ground. Photo credit: NPS
So excited to see what @SeaIceBeth and the science party aboard the @sikuliaq dig up from the #BeringLandBridge!
#Fieldwork: @USGS & @uafairbanks researchers are collecting sediment cores from shallow parts of the Bering Sea to reconstruct past #BeringLandBridge vegetation & sea ice and primary productivity as the ice age receded ~8,000-13,000 years ago. #ClimateR_D @NSF
ALT Two women are standing on the deck of a research vessel, wearing hard hats and water-safety gear smile for their picture while holding a sediment core. Credit: JR Ancheta, UAF
Two days left to submit an abstract to #AGU23!
Consider submitting to this session on Beringia and North Pacific paleoclimate:
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Summer Praetorius retweeted
Whooaaa check out this cool new paper out today in @NatureGeosci 😎 AND it's open access?! Absolutely thrilling.
If you're interested in the 100-kyr problem or orbital forcing on glacial cycles, please give it a read 👀
nature.com/articles/s41561-0…
Summer Praetorius retweeted
AGU abstracts are due next week! Consider submitting to our session focused on lakes and paleohydroclimate:
Lacustrine Records of Paleohydroclimate from the Last Glacial Maximum to Present @ AGU23 agu.confex.com/agu/fm23/prel…
@AGU_Paleo @theAGU @MkirbyE
Happening now!
Julie Brigham Grette, University of Massachusetts-Amherst, speaks today (VII/19) at 14:00 CEST. This #INQUARoma2023 Plenary talk will be livestreamed at this link:
youtube.com/live/Xg_B7_dYE-c
Those attending the Congress can register for a seat using the app.
Summer Praetorius retweeted
@BeringSea and I are looking for a post doc to work on N Pacific Paleoceanography at UCSC. Diatoms! Sea Ice! Geochemistry! Please circulate! recruit.ucsc.edu/JPF01575
Can't wait to visit Rome in a few days for #INQUARoma2023!
I'll be giving a talk on July 18th at 12:30pm (session 42): “Paleoceanographic insights on viable time periods for human migration along the Pacific coastal route during the late Pleistocene”
Who else is going?