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Rachel Lupien @loopdlupien.bsky.social · 17/08/2026

A nice article about our new QSR paper on rapid precipitation, vegetation, and fire transitions in the Turkana Basin!

Rachel Lupien @loopdlupien.bsky.social · 13/07/2026

My postdoc, Julian Traphagan, has a new paper out in Organic Geochemistry! He performed a series of experiments on our GC-IRMS @au.dk and showed that spiking low-conc samples with standards could make some unobtainable compound-specific n-alkane dD measurements now obtainable. Check it out!

sciencedirect.com

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Rachel Lupien @loopdlupien.bsky.social · 06/07/2026

This paper is particularly exciting for me because it documents the first data actually measured in my lab at @au.dk. Also, the team had another paper come out the same day, also in QSR, led by Cat Beck: www.sciencedirect.com/science/arti...

sciencedirect.com

Pleistocene record of a dynamic, fluctuating lacustrine margin from the Turkana Basin, Kenya

Scientific drill cores from continental eastern Africa provide excellent archives of proxies that allow us to contextualize the paleoclimate and paleo…

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Rachel Lupien @loopdlupien.bsky.social · 06/07/2026

IF hominins were at all interacting with fire during this time, which we can't say with these data, it would have occurred during strong-monsoon, high-insolation (modulated by eccentricity) intervals. This has inspired work looking at even finer timescales throughout various insolation parameters.

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Rachel Lupien @loopdlupien.bsky.social · 06/07/2026

We find that the Turkana Basin was fuel-limited, much like during the African Humid Period, meaning that precipitation-fed vegetation is the limiting factor for fire activity. Once the monsoon strengthens in response to insolation change, fire activity increases, and dampens biomass growth. 🔥🌧️🌳

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Rachel Lupien @loopdlupien.bsky.social · 06/07/2026

📣 We have a new paper out in QSR on the high-resolution relationships between precipitation, vegetation, and fire across one precession cycle in the early Pleistocene in the Turkana Basin. Check it out! www.sciencedirect.com/science/arti...

sciencedirect.com

Rapid early Pleistocene climate, vegetation, and fire dynamics in the Turkana Basin

Rapid climate and ecosystem dynamics have been shown to affect evolutionary changes in hominins, including the development of stone tool technology. H…

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Rachel Lupien @loopdlupien.bsky.social · 24/06/2026

My colleague at @au.dk Geoscience has a PhD position open. Apply by August 1 if you like cosmogenic nuclides, paleoclimate, and desert (and/or dessert?) formation! Perfect for students who are looking for a combination of labwork and very exciting fieldwork... phd.nat.au.dk/for-applican...

phd.nat.au.dk

Constraining the temporal evolution of dust-generating deserts in northern China and South America

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Rachel Lupien @loopdlupien.bsky.social · 05/05/2026

Check out my postdoc's, Julian Traphagan, awesome isotope dilution work on n-alkane ẟD today at #EGU26! meetingorganizer.copernicus.org/EGU26/EGU26-...

meetingorganizer.copernicus.org

Abstract EGU26-7259

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Rachel Lupien @loopdlupien.bsky.social · 13/02/2026

Mads is pronounced just like mass of mass spec 😎

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Rachel Lupien @loopdlupien.bsky.social · 13/02/2026

I have 3 Danish instruments: Åse (ASE), Mads (GC-MS), and Irma (GC-IRMS)

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Rachel Lupien @loopdlupien.bsky.social · 16/01/2026

Join us this summer at @au.dk! @vivikathrine.bsky.social and I will be running our summer course, Interdisciplinary Perspectives on Climate Change, including bioscience, economy, consumer behavior, agroecology, public health and more! ☀️Apply by March 17th to join us from July 27th - August 9th☀️

international.au.dk

Interdisciplinary Perspectives on Climate Change

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Reposted by Rachel Lupien

Dan Lunt @climatesamwell.bsky.social · 25/11/2025

📢📢PhD position available!! 📢📢 "Improving future climate prediction through modelling and data of Earth’s past" At the University of Bristol, UK. More details and how to apply: shorturl.at/wKh2W ..or message me here directly.

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Rachel Lupien @loopdlupien.bsky.social · 09/10/2025

On my way back from @uio.no where I served (for the first time!) as a PhD opponent with new pal @sallieburrough.bsky.social. We dug deep into the work of @davidkwright.bsky.social's student (now) Dr. Aljasil Chirakkal on Central Asian Pleistocene paleo-environments. Learned a lot!

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Rachel Lupien @loopdlupien.bsky.social · 01/10/2025

Lucky to have gotten the chance to go to URI to see her speak. Because of you!

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Rachel Lupien @loopdlupien.bsky.social · 02/09/2025

I'm looking for a driven PhD student to join us at @au.dk and to both generate new paleoclimate data in the lab and work on computational problems to understand climate relationships across timescales. Get in touch if you'd like to hear more, and apply by Nov 1! phd.nat.au.dk/for-applican...

phd.nat.au.dk

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Rachel Lupien @loopdlupien.bsky.social · 04/08/2025

We’ve just started the second week of our summer course ‘Climate Change: Cross-Disciplinary Challenges and Solutions’! We have experts from different fields visit each day to provide new perspectives on the climate crisis, and students work in groups on case studies from different sectors 🌍 @au.dk

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Rachel Lupien @loopdlupien.bsky.social · 28/07/2025

Thrilled (and honored!) that Prof. Cat Beck from Hamilton College visited me at @au.dk during her sabbatical in Cologne. Cat and I have worked in Turkana, specifically on the HSPDP Lake Turkana drill core, for many years. It was great to catch up and talk about fun new things!

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Rachel Lupien @loopdlupien.bsky.social · 03/06/2025

We’re in Azerbaijan for field work! I’m collecting biomarker samples from a beautiful sediment sequence in the Azykh cave, where hominins lived over hundreds of thousands of years (we think, lol 😝). Downright honored to be a part of this team in this stunning landscape.

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Rachel Lupien @loopdlupien.bsky.social · 21/05/2025

... and will get reviews on their proposals before their 'interview'. I've been taking the very intense @au.dk pedagogy course this semester, which has taught me the power of constructive alignment, feedback, scaffolding, and more. I can't wait to see what the students come up with!

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Rachel Lupien @loopdlupien.bsky.social · 21/05/2025

This semester, the students have been performing one big 'literature review', and will now put their new skills in identifying knowledge gaps to the test by writing and defending a grant proposal. They did a 'pitch session' with their classmates, sent the 'program manager' (me) a 'one-pager', ...

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Rachel Lupien @loopdlupien.bsky.social · 15/05/2025

And that's a wrap! We finished up Cenozoic Paleoclimate in the last millennium with @kimcobb.bsky.social's coral records and @michaelemann.bsky.social's temperature compilations 📈 It is inspirational to see paleoclimatologists be politically active, standing up for what the data show. #receipts 🌡️

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Reposted by Rachel Lupien

Nina Rønsted @ninaronsted.bsky.social · 02/05/2025

We are hiring. The Natural History Museum Denmark seeks a Tenure-track Assistant Professor and Curator in Vertebrate Paleontology. Duties are collection-based research, curation of collections, teaching and public engagement. Deadline: 18 May 2025. View full job posting: bit.ly/3XPIQcg

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Rachel Lupien @loopdlupien.bsky.social · 02/05/2025

Climate Change - Cross-disciplinary Challenges and Solutions 🌱 No matter what you study, this course will give you fresh perspectives on climate change 🌍 📅 July 28 – August 10, 2025 🚨 Non-AU students can sign up now until June 2nd! @au.dk international.au.dk/education/ad...

international.au.dk

Climate Change - Cross-disciplinary Challenges and Solutions

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Rachel Lupien @loopdlupien.bsky.social · 30/04/2025

It was a beautiful day today at @au.dk, so we took our paper discussion outside ☀️ We’ve transitioned now to the tropics to learn about sapropels, monsoons, landscape feedbacks, threshold responses, and more! 🌱 I try not to pick favorites, but my excitement was hard to hide 🌍

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Reposted by Rachel Lupien

Jens-Christian Svenning @jcsvenning.bsky.social · 24/04/2025

🚨Postdoc opportunity @econovoau.bsky.social 🌍 Help forecast how rising ecological novelty reshapes #biodiversity & #vegetation 🌿 Work at the interface of species distribution models & dynamic global vegetation models 🌐🍃♨️- based in Aarhus, Denmark shorturl.at/t45JT #ecology #ecologyjob #macroecology

shorturl.at

2-yr postdoc on Forecasting Biosphere-Scale Effects of Ecological Novelty Using Species Distribution and Vegetation Models - Vacancy at Aarhus University

Vacancy at Department of Biology - Ecoinformatics and Biodiversity, Aarhus University

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Rachel Lupien @loopdlupien.bsky.social · 24/04/2025

In the last few weeks, we’ve gone deeper into triggers, processes, and responses of the Pleistocene, with lessons from the MPT (including a lovely virtual visit from @jfarmersalmanac.bsky.social!) and the ice core records. A highlight for me was stepping through the logic of Shakun et al 2012 🙌🏻

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Reposted by Rachel Lupien

Ruth Mottram @ruthmottram.eurosky.social · 10/04/2025

Who wants to work on the Arctic in Copenhagen? Super postdoc job going with our friends at Aarhus University* together with DMI on climate modelling and Arctic influences on the mid-latitudes: *at a campus not actually in Aarhus but just outside Copenhagen international.au.dk/about/profil...

international.au.dk

Postdoc in Climate Modelling and Arctic-Midlatitude Connections - Vacancy at Aarhus University

Vacancy at Department of Environmental Science - Atmospheric Emissions & Modelling, Aarhus University

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Rachel Lupien @loopdlupien.bsky.social · 31/03/2025

Celebrating lab group birthdays the Danish way: by cutting off the head of a cake woman covered in candy.

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Rachel Lupien @loopdlupien.bsky.social · 23/03/2025

My first conference, the northeast regional @geosociety.bsky.social, 13 years ago 😎 Why did I think an orange poster was a good idea? Why.

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Rachel Lupien @loopdlupien.bsky.social · 20/03/2025

To be fair, if you did become a crypto girlie, I might be convinced to buy in.

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Rachel Lupien @loopdlupien.bsky.social · 20/03/2025

After delving into the 57-record-stack of LR04 and more, we took a little journey through time over nearly 50 years from Hays, Imbrie, and Shackleton (1976) to the new Barker et al. (2025) on distinct roles for precession, obliquity, and eccentricity the 100-kyr world. 🌐 Literally so exciting.

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Rachel Lupien @loopdlupien.bsky.social · 20/03/2025

lab master Trine prepping fecal sterol/stanol samples 💯

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Rachel Lupien @loopdlupien.bsky.social · 07/03/2025

Over the past few weeks, we've traveled millions of years through time past the EOT, MMCO, and MPWP (students LOVE acronyms... not) with highlights from Goldner, Holbourn, Foster, Wara, Fedorov, Burls, and more. Next, we transition to the glacial-interglacial world of the Quaternary! 🧊🌍 #LR04

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Rachel Lupien @loopdlupien.bsky.social · 04/03/2025

My colleague Vivi Pedersen and I are teaching our summer course again! Climate Change: Cross-disciplinary Challenges and Solutions This Masters level course is 5 ECTS and the deadline for application to soak up the summer sun at @au.dk is on March 18th. ☀️ international.au.dk/education/ad...

international.au.dk

Climate Change - Cross-disciplinary Challenges and Solutions

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Rachel Lupien @loopdlupien.bsky.social · 13/02/2025

This week we tackled the PETM! 🌡️ Triggers, feedbacks, responses, oh my! I assigned Dickens et al 1995 and Zachos et al 2005, and the student leading the discussion chose to add Bowen et al 2004 for the terrestrial perspective.

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Rachel Lupien @loopdlupien.bsky.social · 07/02/2025

Reach out if you're interested in submitting a Marie Curie postdoc fellowship with me Aarhus University! @au.dk offers a fantastic masterclass program that guides applicants and supervisors through the process to maximize success in the end 🥂 medarbejdere.au.dk/administrati...

medarbejdere.au.dk

MSCA PF Masterclass 2025

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Rachel Lupien @loopdlupien.bsky.social · 06/02/2025

Had a fun lil photo shoot in our Biomarker Lab at @au.dk!

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Rachel Lupien @loopdlupien.bsky.social · 05/02/2025

Talked about Zachos et al 2001, Westerhold et al 2020, and CenCO2PIP 2023 today. A lot? Yes. Very exciting and fun imho? Also yes. This was a Cenozoic overview to kick us off. On to the PETM next week! 🧊🥵

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Rachel Lupien @loopdlupien.bsky.social · 29/01/2025

Today my new seminar course Cenozoic Paleoclimate begins! We'll be traveling through time(scale) from the PETM to ENSO reading foundational and state-of-the-art papers. Students will lead discussions and develop a project proposal to fill a knowledge gap 💡 Ooo goodness, I'm excited. @au.dk

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Rachel Lupien @loopdlupien.bsky.social · 17/01/2025

Two weeks left to apply to this very exciting (if I do so say myself) PhD position with Professor Mads Knudsen and me at @aarhusuni.bsky.social!

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Rachel Lupien @loopdlupien.bsky.social · 02/01/2025

Godt nytår! I'm hiring an isotope-loving postdoc with applications due January 15th 🇩🇰

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Rachel Lupien @loopdlupien.bsky.social · 15/12/2024

Highly recommend going to visit your mom and sleeping in your childhood twin bed to recover with 10 hours of sleep after #AGU24

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