Katrin Haettig

💼 I’m seeking a position in Scientific Coordinator/Outreach, laboratory/analytical Research & Development (R&D), or as a Project Manager.

🧭 I love organizing things – whether it’s in the lab, managing projects, engaging in science communication, or working out in the field.

I’m currently looking for a new professional opportunity in the Bremen area – maybe you can help me with that. If you hear of any suitable positions or just want to reconnect, I’d be happy to hear from you or see a comment below.

#OpenToWork

This post deserves to join a few relevant Bluesky feeds. 👇🏻
🧪 ⚒️
#PaleoSky

Timeseries of global average air temperature back to the 1780s

How did global air temperatures vary before 1850?

We can now answer this from direct instrumental observations.

The new GloSAT dataset is under review!

Morice et al.: essd.copernicus.org/preprints/es...

Controls on the composition of hydroxylated isoprenoidal glycerol dialkyl glycerol tetraethers (isoGDGTs) in cultivated ammonia-oxidizing Thaumarchaeota Abstract. Membrane lipids of ammonia-oxidizing Thaumarchaeota, in particular isoprenoidal glycerol dialkyl glycerol tetraethers (isoGDGTs) and hydroxylated isoGDGTs (OH-isoGDGTs), have been used as bi...

Nice new work on OH-GDGT by NIOZ crew lead by ECR Devika Varma and not so ERC Stefan Schouten.

bg.copernicus.org/articles/21/...

Our @natureportfolio.bsky.social Climate Change paper that describes the science behind the Ocean Alkalinity Enhancement Atlas has now been published. 🌊

Free Link: www.nature.com/articles/s41...

Choices

With @geochem-nicole.bsky.social
🧪

But for now - I am on maternity leave till begin 2025👶👶😇😇

Project 4 and 5 go deeper in time - stay tuned for more hydrogen isotope records of alkenones.

agupubs.onlinelibrary.wiley.com/doi/10.1029/...

My 3. Paper spans the Mid Miocene, one of my favorite record so far, proud that I was able to measure so many samples manually during covidlabrestrictions. For this open-ocean North Atlantic core site we are confident in our surface seawater isotope reconstruction which fits recent publications.

Large variability and 2H-depletion of Middle Miocene to Pleistocene alkenone hydrogen isotopes in the Equatorial Pacific reflect subsurface, low light haptophyte growth Hydrogen isotope ratios of haptophyte derived long-chain alkenones (δ2HC37:2) have shown to be a useful tool for reconstructing past isotopic composit…

www.sciencedirect.com/science/arti...

My 2. Paper spans the Pliocene-Miocene, interesting Equatorial Pacific core and time period but it turned out that we are not able to interpret the surface seawater isotopes based on allenones here. But we learned more about the proxy 🤷‍♀️

Glacial–interglacial seawater isotope change near the Chilean Margin as reflected by δ2H values of C37 alkenones Abstract. Stable hydrogen isotopic compositions of long-chain alkenones with 37 carbon atoms (δ2HC37) have been shown to reflect seawater salinity in culture and environmental studies, and this potent...

cp.copernicus.org/articles/19/...

My 1. PhD Paper spans the last 20.000 years and we demonstrate that the d2HC37 proxy is reproducible and we provide an interpretation on the surface seawater isotope change.

Past ocean and climate by analysing sediment cores from the seafloor

My PhD project focuses on d2H of alkenones and I tried to combine it to inorganic d18O records and other proxies 🤓 And applied it to different marine sediment cores from different locations and different timespans of the Cenozoic (thousand to million years)

Since my Bachelor I am fascinated by isotopes and marine geochemistry. My first proxy project back then was on oxygen isotopes of 🦈teeth then I discovered the world of foraminifera (e.g. 14C, d18O, d13C) and meanwhile digged into the organic geochemistry world.

Prof. is not an official titel in Germany. Only Dr. can be put onto ID as part of your name and thus was/ is part when addressing a name on letters ect.

Hello, I am new to this space and want to introduce myself the next few weeks.
After my Geoscience Master in Bremen, I started my PhD project march 2020, 2 weeks before lockdown as I use to say 😅, at NIOZ on the beautiful island of Texel 🏖️🦭

Top panel shows two black wiggly lines going up and down in parallel- one is CO2 the other is global temperature. They cover the last 485 million years. Panel on the bottom left shows a x-plot of CO2 vs Global Temperature- the data are beautifully correlated implying an Earth System Sensitivity of around 8 oC per CO2 doubling. Not sure what the figure in the bottom right panel shows but it looks cool!

The past IS the key to the future. Fantastic effort - 485 million years of global temperature correlating with atmospheric CO2 in this new paper by Judd and others www.science.org/doi/10.1126/... . 🧪⚒️

« Choosing Suitable Color Palettes for Accessible and Accurate Science Figures » by @fabiocrameri.ch, G. E. Shepard, and P. J. Heron 👇🏻

This piece of work definitely deserves to appear in the Science Feed! 🧪