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Pete Puleo

@petepuleo.bsky.social
315 followers 502 following 23 posts

Assistant Professor in the Department of Geography, Geology, and Environmental Science at the University of Wisconsin - Whitewater. Paleolimnologist and paleoclimatologist. www.uww.edu/cls/cls-directory/profi…

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Pete Puleo @petepuleo.bsky.social · 10/04/2026
Cheers to all that I met at the WI AWRA meeting over the past couple days! I had a nice time and enjoyed sharing my reconstruction of European settlement, agriculture, and aquatic productivity using Gass Lake sediment chemistry (near Manitowoc, WI).
A pint glass with WI AWRA 50th anniversary printed on it.
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Pete Puleo @petepuleo.bsky.social · 24/01/2026
The current administration has fundamentally damaged scientific progress in the US in so many ways. eos.org/report/the-s...
eos.org
The State of the Science 1 Year On: The Federal Workforce - Eos
Thousands have left the federal workforce, and those who remain face significant uncertainty about their professional futures.
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Pete Puleo @petepuleo.bsky.social · 15/01/2026
2025 climate wrapped... www.carbonbrief.org/state-of-the...
carbonbrief.org
State of the climate: 2025 in top-three hottest years on record as ocean heat surges - Carbon Brief
The year 2025 was in the top-three warmest years on record
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Pete Puleo @petepuleo.bsky.social · 08/01/2026
Disappointing and unsurprising! www.bbc.com/news/article...
bbc.com
Trump withdraws US from key climate treaty and dozens of other groups
The White House says the decision was taken because those entities "no longer serve American interests".
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Reposted by Pete Puleo
Katharine Hayhoe @katharinehayhoe.com · 30/06/2025
Here is the web archive version of NCA5: web.archive.org/web/20250626...
web.archive.org
Fifth National Climate Assessment
The Fifth National Climate Assessment is the US Government’s preeminent report on climate change impacts, risks, and responses. It is a congressionally mandated interagency effort that provides the sc...
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Pete Puleo @petepuleo.bsky.social · 07/05/2025
Just finished the last lecture of my first year at UW-W! Feeling excited for a short break before digging into some research over the summer.
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Pete Puleo @petepuleo.bsky.social · 28/04/2025
2/2 Even though the grant has been cancelled, our efforts will remain. We know that making the geosciences more accessible to students is vital for recruiting and preparing an outstanding workforce.
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Pete Puleo @petepuleo.bsky.social · 28/04/2025
1/2 I'm sad to say that I have joined the ranks of many US scientists who have been impacted by NSF grants being rescinded. A few faculty at UWW were a part of the C-Change cohort, which aimed to build collaborations across universities to improve student experiences in the geosciences.
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Jacquelyn Gill @jacquelyngill.bsky.social · 25/03/2025
The @ncse.bsky.social has a new climate podcast, Safeguarding Sound Science! The first two episodes are interviews with @michaelemann.bsky.social and @naomioreskes.bsky.social on climate denial. Check it out -- NCSE is also a fantastic organization. Their mission is more important than ever.
ncse.ngo
Safeguarding Sound Science | National Center for Science Education
Safeguarding Sound Science, Climate Change EditionSafeguarding Sound Science combats misinformation, disinformation, and misconceptions about climate change with actual science.
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Karen James @kejames.bsky.social · 28/02/2025
I’m thinking we should spread this news about the firings at NOAA as far and wide as possible. Like cancer research, weather forecasting seems likely to be broadly popular across the political spectrum. apnews.com/article/nati...
apnews.com
Hundreds of weather forecasters fired in latest wave of DOGE cuts
Federal workers who were not let go said the afternoon layoffs included meteorologists who do crucial local forecasts in National Weather Service offices across the U.S.
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Pete Puleo @petepuleo.bsky.social · 27/02/2025
I wrote an Op-Ed that was published online Monday and in print Wednesday on the importance of scientific funding for Wisconsinites. Was inspired by @sciencehomecoming.bsky.social Check out the initiative (sciencehomecoming.com) and my article! madison.com/opinion/colu...
madison.com
Research cuts in Wisconsin hurt economy, environment, farmers | Pete Puleo
Federal funding for science must continue
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Pete Puleo @petepuleo.bsky.social · 14/02/2025
I also like describing the proxy materials with a time capsule analogy. They take a snapshot of water chemistry then are stored in sediments until we "open" them to learn about the past.
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Pete Puleo @petepuleo.bsky.social · 14/02/2025
I teach a physical geography course to many non-majors and like talking about the marine oxygen isotope records with a figure like this one. I find it helps students understand the directionality and how the proxy links to climate very directly. uwyodioramas.wordpress.com/wp-content/u...
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Marshall Shepherd @drshepherd2013.bsky.social · 10/12/2024
This is so spot on. As a climate scientist and public intellectual, I see or experience these often
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Pete Puleo @petepuleo.bsky.social · 08/12/2024
Please reach out if you are interested in using this proxy to reconstruct seasonal hydroclimate in one of your sediment archives! /6
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Pete Puleo @petepuleo.bsky.social · 08/12/2024
Last, we compare the δ18O values of consecutive aquatic moss segments that grew in spring vs. summer and summer vs. fall. We observe higher δ18O values during the fall compared to summer, likely due to evaporation and the 18O enriched precipitation in the late summer/fall. /5
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Pete Puleo @petepuleo.bsky.social · 08/12/2024
We infer weekly to monthly changes in lake water δ18O values from subsampled aquatic moss δ18O values through the summer and compare them with direct summer lake water δ18O measurements at 8 sites. We find similar increasing trends in both, showing the strength of the proxy. /4
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Pete Puleo @petepuleo.bsky.social · 08/12/2024
Given our interests in reconstructing precipitation δ18O values at a seasonal scale back in time, we set out to explore the potential of aquatic moss growth segments in northwest Greenland for reconstructing seasonal hydroclimate. /3
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Pete Puleo @petepuleo.bsky.social · 08/12/2024
Past researchers have described how some aquatic moss species in the Arctic have distinct seasonal growth patterns based on temperature. Generally speaking, summer aquatic moss stems were more dense with leaves and branches than cool season stems. /2
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Pete Puleo @petepuleo.bsky.social · 08/12/2024
Sad to be missing out on AGU this year! To try and feel connected, I'm sharing the manuscript associated with my talk last year that was published recently. Aquatic moss δ18O as a proxy for seasonally resolved lake water δ18O, northwest Greenland (www.sciencedirect.com/science/arti...). /1
sciencedirect.com
Aquatic moss δ18O as a proxy for seasonally resolved lake water δ18O, northwest Greenland
Reconstructing past climate seasonality is fundamental to understanding the nature of past climate changes. This is especially true in the Arctic, whe…
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Reposted by Pete Puleo
Yarrow Axford @yarrowaxford.bsky.social · 08/12/2024
Our group has lots on tap for #AGU24! Past big shifts in temperature, lake level, anoxia. Close looks at several water isotope methods. News from Greenland, New England, & the Midwest. A rundown:
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Pete Puleo @petepuleo.bsky.social · 06/12/2024
As the end of my first semester teaching wraps up, I'm wondering if anyone on here has advice for increasing course evaluation response rate? I'm at around a 50% response rate across my three courses after giving some time in class to complete them. #edusky #teachlearnsky
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Pete Puleo @petepuleo.bsky.social · 04/12/2024
Just gave the last lecture of my first semester! Woohoo!!! Now just a few exams, presentations, and papers to grade...
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Pete Puleo @petepuleo.bsky.social · 27/11/2024
Could I be added? I reconstruct climate and environmental change over the past ~15,000 years using lake sediment geochemistry.
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Pete Puleo @petepuleo.bsky.social · 27/11/2024
In terms of future research, I am working on generating oxygen isotope based records of Holocene and Younger Dryas climate change in the Midwest using lake sediments. Additionally, I am hoping to analyze modern oxygen and hydrogen isotopes in precipitation and surface waters. /4
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Pete Puleo @petepuleo.bsky.social · 27/11/2024
My past research involved investigating Holocene/Younger Dryas climate using oxygen isotope measurements on materials in lake sediments, testing novel oxygen isotope proxies with potential seasonally specific applications, and using lake sediment geochemistry to reconstruct glacier movement. /3
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Pete Puleo @petepuleo.bsky.social · 27/11/2024
I'm currently teaching classes on Physical Geography, Environmental Geology, and Environmental Science. I'm planning to develop courses on the Great Lakes and Midwest Climate Change. /2
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Pete Puleo @petepuleo.bsky.social · 27/11/2024
Hi all! I'm a new Assistant Professor at the University of Wisconsin - Whitewater in the department of Geography, Geology, and Environmental Science. I recently earned my PhD in Earth and Planetary Sciences from Northwestern University. /1
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