Paul Zander

Unraveling the mysteries of ancient solar storms and earthquakes Tree-ring and planetary scientists are preparing for the big natural events thanks to a Big Idea Challenge grant and a new laboratory.

Unraveling the mysteries of ancient solar storms and earthquakes using tree rings research.arizona.edu/news/unravel...

Postdoctoral Research Associate - Earth, Environmental, and Planetary Sciences Position Summary The Climate and Paleoclimate Lab in the Department of Earth, Environmental, and Planetary Sciences at WashU in St. Louis seeks a Postdoctoral Research Associate in tropical climate/pa...

We're hiring! I'm recruiting a Postdoctoral Research Associate in climate & paleoclimate modeling of the tropical Americas. Come obsess over the tropical rain belt with me! :) Please share w/folks who may be interested. Ad here: wustl.wd1.myworkdayjobs.com/en-US/Extern...

What a pleasure and a privilege to contribute to @pages-ipo.bsky.social magazine with @zanderland.bsky.social And, among the others, there is some Lake Żabińskie on the cover!

I am currently seeking a Lab Manager for our Organic Geochemistry Lab at the University of Arizona! Full time position with benefits. If you have a chemistry/biology/geology degree and like fixing things and working with students, this position could be for you! arizona.csod.com/ux/ats/caree...

Thats a lot of long term OC storage I bet

Is global warming just part of Earth’s natural cycle? In this episode of Weathered, we break down why that’s not the full story. From ice ages and Milankovitch cycles to the role of CO2 and fossil fuels, today’s climate change is unlike anything in Earth’s deep past. Learn why the speed of warming m Did Climate Skeptics Get THIS Right?!

We often hear folks skeptical of climate change claim that "the climate is always changing" or "temperatures rise before CO2" or "its the sun". In a new episode of PBS's Weathered, @leafwax.bsky.social and I try and address these questions: www.youtube.com/watc...

I think there's a decent argument that a lot more people in NY and CA would've voted for Kamala if they felt like their vote mattered at all

Just your regular reminder of where global CO2 emissions are tracking compared to scenarios that keep warming to below 1.5C in 2100, with "no or low overshoot" (maximum temperature around 1.6C).

journals.sagepub.com/doi/full/10....

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🚨 Junior Professorship Job Offer! 🚨
Join @cerege.bsky.social as a Junior Professor (CPJ) 2025 to study Pleistocene & Holocene paleoenvironments and human settlements. A unique opportunity to explore past landscapes and their impact on societies!

Job ad here : nuage.osupytheas.fr/s/GoSt7kcKMp...

Obviously complaints about free speech from the right meant their speech. They never cared about the principle.

Fascism is here.

The list of words Trump is banning from government is the most stunning document of our time. Click the image below to see how many words Trump and Musk have canceled as part of their new Reich.

🔗: www.nytimes.com/interactive/...

I am one of these NSF postdocs. NSF has frozen everyone’s access to their salaries and research stipends (that were already awarded) with no information about when they might be expected to be unfrozen. It still appears like we are expected to continue doing our work though.

LA is in a high fire risk region & fire weather conditions are complex. So we @wwattribution.bsky.social looked at many lines of evidence. All show: our burning of fossil fuels increased the likelihood of such extreme fire weather conditions www.worldweatherattribution.org/climate-chan...

Earth's temperature history for the past 500 million years

For my first scientific post here, I want to talk about the Phanerozoic temperature record we published last Fall, which unfortunately has been making rounds in the climate denier circuit 👀 First though hopefully you can appreciate the beauty of this reconstruction ✨...

Here's a schematic I published in this 2021 piece to illustrate how even a modest delay in onset of rainy season in Southern California can dramatically amplify wildfire risk by lengthening seasonal overlap between dry vegetation and strong offshore winds during Oct-Jan. #CAfire

Interesting that California is not a hot spot for increased hydro climate whiplash! Is CA already naturally above average for this metric?

Hydroclimate volatility on a warming Earth Nature Reviews Earth & Environment - Rapid transitions between extreme wet and extreme dry conditions — ‘hydroclimate whiplash’ — have marked environmental and societal...

Our paper on "Hydroclimate volatility on a Warming Earth" is out in Nature Reviews Earth & Environment. We assess existing scientific literature & conduct new analysis--concluding that "#HydroclimateWhiplash" is increasing due to #ClimateChange. [Thread] www.nature.com/artic...

Today I learned mine tailings can be laminated. But are they varves?

Remember that we have a Starter Pack for researchers who work(ed) with molecules, such as leaf wax, algal, archaeal, and bacterial lipids and pyrogenic compounds.

Featuring but not restricted to #GDGT lovers, #PaleoSky people, geologists ⚒️, and/or (pale)oceanographers 🌊

go.bsky.app/RC38uDF

In case you missed it, our insightful panel discussion on careers outside academia for paleo scientists is on youtube:

www.youtube.com/watch?v=hRjG...

Might be of interest to @loopdlupien.bsky.social @triptychphrases.bsky.social @sfeakins.bsky.social @climategordon.bsky.social

Plus... we show that the properties of alkane standards for GC-IRMS can make a big difference for measuring dD.

Large‐Volume Injection and Assessment of Reference Standards for n‐Alkane δD and δ13C Analysis via Gas Chromatography Isotope Ratio Mass Spectrometry Rationale Compound-specific stable isotope analysis of hydrogen (δD) and carbon (δ13C) in organic compounds is a valuable tool in biogeochemical research. A key limitation of this method is the rela.....

Ever wanted to get just a little bit more out of your lipid extracts when measuring compound specific isotopes?

If yes, here's a new paper that might be of interested to you:

analyticalsciencejournals.onlinelibrary.wiley.com/doi/10.1002/...

with @amglab.bsky.social

By now, I made three Earth ⚒️ and Marine 🌊 Sciences 🧪 Starter Packs:

Paleoenvironmental researchers:
bsky.app/starter-pack...

Scientific Drilling ( #IODP / #ICDP ) researchers:
bsky.app/starter-pack...

Marine biogeochemistry researchers:
bsky.app/starter-pack...

One of them may be interesting.

We also found that the rate of warming during the past 90 years is likely unprecedented in the past 10,800 years. 🌡️⬆️

Thanks if you read this far. Happy to discuss if you have questions.

This result agrees with modern data showing increased summer temperature variability in central Europe as the climate warms.

But our record is unique for its high-resolution, which allows us to investigate decadal-scale variability. We find higher decadal-scale temperature variability during the early Holocene, roughly during the warmest period.

Our temperature reconstruction agrees well with other paleoclimate records form the Northern Hemisphere.

We found a significant correlation between Ca/Ti and spring + summer temp spanning over 200 years even after accounting for age uncertainty.

3) A long historical instrumental temperature record extending back to 1779 that could be used to validate our temperature reconstruction