Julie Edwards

Climate of the Common Era This session highlights recent work on all aspects of the climate of the last 2000 years (the Common Era), using new proxy records, data syntheses, reconstruction methodologies, proxy system modeling,...

If you have cool research about climate over the last 2000 years, consider submitting your abstract to our session Climate of the Common Era at the 2025 AGU Fall Meeting #AGU25 #paleoclimate. The abstract submission deadline is Wednesday, July 30 at 23:59 EDT.

agu.confex.com/agu/agu25/pr...

28.07.2025 18:34 — 👍 2    🔁 1    💬 0    📌 0

The Influence of Carbon Dioxide and Precession on Western North American Hydroclimate and Pacific Sea Surface Temperature During the Holocene A network of proxy records shows western North American hydroclimate and Pacific sea surface temperature co-evolved during the Holocene The western North America became wetter while the eastern e...

Excited to (finally) share my new paper on Pacific SST and western North America hydroclimate during the Holocene! TL;DR They are connected, CO2 and precession both affect hydroclimate. Thanks @xiaojingdu.bsky.social @meredithparish.bsky.social @baylorfk.bsky.social+others
dx.doi.org/10.1029/2024...

24.07.2025 13:37 — 👍 13    🔁 6    💬 2    📌 1

Contrasting effects of warming and drought on autumn phenology of photosynthesis and growth in white spruce Warming delays the autumn downregulation of photosynthesis in white spruce; however, local adaptation to photoperiod constrains the timing of growth cessat

The first chapter of my PhD thesis is officially published. If you're into conifers, climate change or cold acclimation then this paper is for you 🌿❄️

academic.oup.com/plphys/artic...

As I wrap up my PhD this year, I'm also beginning the search for postdoc opportunities so keep me in mind

25.07.2025 16:52 — 👍 16    🔁 8    💬 2    📌 0

Final fieldwork of the season at Big Rock Creek in SoCal was made much cooler by the monsoon rolling in! This site is part of my project using tree rings to reconstruct atmospheric rivers in SoCal, but maybe there’s a monsoon story hiding in the wood too 👀

19.07.2025 03:52 — 👍 9    🔁 1    💬 0    📌 0

A Nutrient Effect on the TEX86 Paleotemperature Proxy Nutrient stress alters GDGT distributions in marine sediments, resulting in elevated TEX86 ${\text{TEX}}_{86}$ values beyond those related to thermal effects Paleoclimate case studies from the Ar...

Now published in @agu.org Geophysical Research Letters!

What happens to marine archaea when they’re hungry? And what does that mean for the TEX₈₆ paleothermometer?

Full paper here: doi.org/10.1029/2025...

Thanks to my coauthors and mentors for their support — and stay tuned, more is coming!

21.06.2025 19:32 — 👍 28    🔁 15    💬 5    📌 2

Resolving troubling discord in Boreal versus Austral late Holocene temperature history | BOREAUSTRALIS | Projekt | Fact Sheet | HORIZON | CORDIS | European Commission According to temperature reconstructions based on natural climate proxy archives (ice cores, lake sediments, tree rings etc.), Northern and Southern Hemisphere (NH, SH) temperature histories differ in...

2 PhD positions in dendroclimatology! cordis.europa.eu/project/id/1...
The project is centered around working up millennium-long wood anatomical datasets to reconstruct temperature.
web103.reachmee.com/ext/I005/103...
Deadline 30th of June. For questions, contact: jesper.bjorklund@gu.se

16.06.2025 20:59 — 👍 9    🔁 12    💬 0    📌 1

Epic (hot!!) day on #MtFig coring bigcone Douglas-fir for @julieedtree.bsky.social amazing #NSF postdoc research! These ladies are such badasses (and such good vibes!). W/ @michelledmohr.bsky.social @olross.bsky.social Stay tuned for updates on historical patterns of atmospheric rivers in #socal!

12.05.2025 16:36 — 👍 10    🔁 2    💬 0    📌 0

Tree‐Ring Anatomy Improves the Reliability of Temperature Reconstructions Using Relict Wood Cell wall dimensions: Subfossil wood cell wall measurements are less affected by degradation than MXD from X-ray densitometry Identifying degradation: The holo-cellulose-to-wood ratio in low-dens...

Quantitative wood anatomy measurements for the win! This time when using subfossil wood - 'Tree-Ring Anatomy Improves the Reliability of Temperature Reconstructions Using Relict Wood' agupubs.onlinelibrary.wiley.com/doi/full/10....

25.04.2025 15:06 — 👍 18    🔁 7    💬 0    📌 0

Olivia coring a large big-cone Douglas fir tree on a shady slope with smaller firs, oaks, and cedars in the surrounding area.

A vista of the Peninsular Ranges in northern San Diego County near Palomar Mountain, an oak woodland is in the foreground.

Olivia cores a big-cone Douglas fir tree on a shady slope. Leaf litter covers the ground and small oaks are in the background

Dervla smiles while coring a big-cone Douglas fir tree on a rocky slope. Large granite(?) rocks covered in moss are behind her

Fieldwork this past weekend with the AMAZING @olross.bsky.social and Dervla Meegan-Kumar in the Cleveland National Forest. NSF-funded, I’m using tree-ring width to reconstruct atmospheric river variability in Southern California, which will help us better prepare for future storms in the region.

21.04.2025 17:22 — 👍 13    🔁 3    💬 0    📌 1

Global Warming Is Likely Affecting Regional Drought Across Eurasia Rigorous climate change detection and attribution is possible without the use of general circulation model simulations 21st century Eurasian hydroclimate patterns are incompatible with pre-indust...

Can we use paleo for detection and attribution of drought without a climate model? Yes!

New work led by @drkatemarvel.bsky.social, with me and some old guy.

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

13.02.2025 20:38 — 👍 54    🔁 19    💬 1    📌 1

Tree-ring evidence of the elusive 1959 summer cold event in northwestern North America Tree-ring records in northwestern North America suggest that the year 1959 was anomalously cold relative to the last several centuries. Here, we investigate the spatial characteristics, specific ti...

And in another new paper out today, lead author Cari Leland shows how tree-ring proxies and wood anatomy track a transient synoptic scale cold snap across northwestern North American in the late summer (late July to early August) of 1959 www.tandfonline.com/doi/full/10....

12.02.2025 15:41 — 👍 25    🔁 13    💬 0    📌 1

Climate Variability in the Gulf of California Over the Last 1,300 years Sea surface temperatures in the Gulf of California (GoC) have varied on multidecadal to multicentennial time scales over the Common Era There is no one-to-one relationship between reconstructed S...

Congratulations to @kiradharris.bsky.social who leads a new paper in Paleoceanography and Paleoclimatology on last millennium SSTs in the Gulf of California and leaf wax evidence for North American Monsoon variability agupubs.onlinelibrary.wiley.com/doi/full/10....

12.02.2025 15:00 — 👍 17    🔁 5    💬 0    📌 0

National Science Foundation suspends salary payments, leaving researchers unable to pay their bills An NSF online payment system remained down after the federal funding freeze was lifted, leaving early-career scientists scrambling to pay bills

National Science Foundation suspends salary payments, leaving researchers unable to pay their bills www.statnews.com/2025/01/30/t...
Story by @ericboodman.bsky.social

30.01.2025 22:53 — 👍 1469    🔁 1017    💬 60    📌 116

Refining past climate records with wood anatomy Nature Reviews Earth & Environment - Julie Edwards explains how quantitative wood anatomy helps refine records of past climate.

I got to write a 'Tools of the Trade’ article about quantitative wood anatomy a little bit ago. Check it out for an accessible summary of how measuring wood cells is improving our understanding of past climate!

30.01.2025 21:52 — 👍 19    🔁 4    💬 0    📌 1

Please repost! We're recruiting our second cohort (3-5) of #GlobalChangePostdocs @ucsantabarbara
Join our vibrant and inspiring community of #interdisciplinary scholars (we love it here:)!

Apply:
globalchangepostdoctoralfellowship.com
UCSB is an EOE, including disability/vets

22.11.2024 21:33 — 👍 12    🔁 16    💬 2    📌 1