Julie Edwards
@julieedtree.bsky.social
Postdoc at UCSB, tree rings, paleoclimate
Reposted by Julie Edwards
An atmospheric river continues to drench the Pacific Northwest in heavy rainfall, resulting in a widespread flooding threat across western Washington.
This timelapse since the beginning of the week shows the relentless plume of moisture that has soaked the region.
This timelapse since the beginning of the week shows the relentless plume of moisture that has soaked the region.
December 10, 2025 at 11:40 PM
An atmospheric river continues to drench the Pacific Northwest in heavy rainfall, resulting in a widespread flooding threat across western Washington.
This timelapse since the beginning of the week shows the relentless plume of moisture that has soaked the region.
This timelapse since the beginning of the week shows the relentless plume of moisture that has soaked the region.
Reposted by Julie Edwards
Please contribute! We neex broad input, different forest types, and an array of natural disturbances to see how disturbance regimes are changing.
December 10, 2025 at 6:00 PM
Please contribute! We neex broad input, different forest types, and an array of natural disturbances to see how disturbance regimes are changing.
Reposted by Julie Edwards
Excited for this paper to be out! With the collaboration of met services from Central America, we evaluate in detail the biases in gridded products that arise from the underlying station data, and the effect this has on the apparent emergence of regional drying trends. Thanks to all the co-authors!
Rainfall data can be hard to come by in the tropics. @anaigmendez.bsky.social leads a new paper taking a deep dive into the quality and potential biases in gridded precipitation data in Central America. CHIRPS comes out ahead, but be wary of trends! agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Impacts of Spatial and Temporal Station Availability on Gridded Precipitation Products in Central America
There are significant differences between gridded precipitation products in Central America in both variability and trends CHIRPS consistently outperforms Global Precipitation Climatology Centre ...
agupubs.onlinelibrary.wiley.com
December 10, 2025 at 5:44 PM
Excited for this paper to be out! With the collaboration of met services from Central America, we evaluate in detail the biases in gridded products that arise from the underlying station data, and the effect this has on the apparent emergence of regional drying trends. Thanks to all the co-authors!
Reposted by Julie Edwards
Rainfall data can be hard to come by in the tropics. @anaigmendez.bsky.social leads a new paper taking a deep dive into the quality and potential biases in gridded precipitation data in Central America. CHIRPS comes out ahead, but be wary of trends! agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Impacts of Spatial and Temporal Station Availability on Gridded Precipitation Products in Central America
There are significant differences between gridded precipitation products in Central America in both variability and trends CHIRPS consistently outperforms Global Precipitation Climatology Centre ...
agupubs.onlinelibrary.wiley.com
December 10, 2025 at 2:13 PM
Rainfall data can be hard to come by in the tropics. @anaigmendez.bsky.social leads a new paper taking a deep dive into the quality and potential biases in gridded precipitation data in Central America. CHIRPS comes out ahead, but be wary of trends! agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Reposted by Julie Edwards
Disturbance interactions have profound consequences for forest health, yet remain poorly understood.
Here we use DAGs to differentiate #Synergisms, #CompoundDisturbances & #NetworkEffects and review the impacts of climate change.
Final version out now! 🧪🌐🍁🌱
www.annualreviews.org/content/jour...
Here we use DAGs to differentiate #Synergisms, #CompoundDisturbances & #NetworkEffects and review the impacts of climate change.
Final version out now! 🧪🌐🍁🌱
www.annualreviews.org/content/jour...
November 24, 2025 at 5:22 PM
Disturbance interactions have profound consequences for forest health, yet remain poorly understood.
Here we use DAGs to differentiate #Synergisms, #CompoundDisturbances & #NetworkEffects and review the impacts of climate change.
Final version out now! 🧪🌐🍁🌱
www.annualreviews.org/content/jour...
Here we use DAGs to differentiate #Synergisms, #CompoundDisturbances & #NetworkEffects and review the impacts of climate change.
Final version out now! 🧪🌐🍁🌱
www.annualreviews.org/content/jour...
Reposted by Julie Edwards
Join the Laboratory of Tree-Ring Research at the University of Arizona for our 2026 Dendrochronology Intensive Summer Course (DISC)! Spend 3 great weeks (May 18th to June 5, 2026) in the field, lab, and classroom learning first-hand how tree-ring research is done! ltrr.arizona.edu/summerschool
Dendrochronology Intensive Summer Course (DISC) 2026 | Laboratory of Tree-Ring Research
ltrr.arizona.edu
November 24, 2025 at 10:01 PM
Join the Laboratory of Tree-Ring Research at the University of Arizona for our 2026 Dendrochronology Intensive Summer Course (DISC)! Spend 3 great weeks (May 18th to June 5, 2026) in the field, lab, and classroom learning first-hand how tree-ring research is done! ltrr.arizona.edu/summerschool
Reposted by Julie Edwards
A devastating set of decisions on the part of UC leadership to withdraw support from our nationally recognized postdoc program that prioritizes research excellence combined with addressing our university public service mission. www.insidehighered.com/news/faculty...
UC to Stop Funding Systemwide Postdoc Program
Established in 1984 to encourage women and minority Ph.D.s to pursue academia, the program has attracted right-wing criticism for prioritizing diverse candidates.
www.insidehighered.com
November 5, 2025 at 6:53 PM
A devastating set of decisions on the part of UC leadership to withdraw support from our nationally recognized postdoc program that prioritizes research excellence combined with addressing our university public service mission. www.insidehighered.com/news/faculty...
Reposted by Julie Edwards
Dr. Julie Edwards (@julieedtree.bsky.social) leads a new paper showing that high-resolution cellular-scale measurements (Quantitative Wood Anatomy) yield better temperature signals in Alaskan tree rings than even conventional MXD across all frequencies agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Resolution and Frequency‐Dependent Climate Signals in an Arctic Tree‐Ring Temperature Reconstruction of the Last Millennium
Tree-ring density measurement resolution affects low-frequency trends in temperature reconstructions High-resolution anatomical maximum latewood density has stronger correlations with instrumenta...
agupubs.onlinelibrary.wiley.com
October 28, 2025 at 3:42 PM
Dr. Julie Edwards (@julieedtree.bsky.social) leads a new paper showing that high-resolution cellular-scale measurements (Quantitative Wood Anatomy) yield better temperature signals in Alaskan tree rings than even conventional MXD across all frequencies agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Reposted by Julie Edwards
Thrilled our #AREES review on #Disturbance #Interactions is out! #ClimateChange = MAJOR DISRUPTER, but not how you’d expect 👀
#NewFramework: #CC effects on interactions🧪🌐🍁🌱
HUGE🙏4 legendary efforts: @rupertseidl.bsky.social @brian-j-harvey.bsky.social @julieedtree.bsky.social
tinyurl.com/3p97ztr5
#NewFramework: #CC effects on interactions🧪🌐🍁🌱
HUGE🙏4 legendary efforts: @rupertseidl.bsky.social @brian-j-harvey.bsky.social @julieedtree.bsky.social
tinyurl.com/3p97ztr5
September 29, 2025 at 4:07 PM
Thrilled our #AREES review on #Disturbance #Interactions is out! #ClimateChange = MAJOR DISRUPTER, but not how you’d expect 👀
#NewFramework: #CC effects on interactions🧪🌐🍁🌱
HUGE🙏4 legendary efforts: @rupertseidl.bsky.social @brian-j-harvey.bsky.social @julieedtree.bsky.social
tinyurl.com/3p97ztr5
#NewFramework: #CC effects on interactions🧪🌐🍁🌱
HUGE🙏4 legendary efforts: @rupertseidl.bsky.social @brian-j-harvey.bsky.social @julieedtree.bsky.social
tinyurl.com/3p97ztr5
Reposted by Julie Edwards
Climate change increasingly alters the interactions between forest disturbances. Here we present a framework for quantifying dist. interactions and compile evidence for their impacts. Led by @dudney-joan.bsky.social with @brian-j-harvey.bsky.social & @julieedtree.bsky.social doi.org/10.1146/annu...
September 8, 2025 at 6:15 PM
Climate change increasingly alters the interactions between forest disturbances. Here we present a framework for quantifying dist. interactions and compile evidence for their impacts. Led by @dudney-joan.bsky.social with @brian-j-harvey.bsky.social & @julieedtree.bsky.social doi.org/10.1146/annu...
Reposted by Julie Edwards
It's been a blast kicking off my first research project in Yosemite this summer. I am so thankful to continue learning about the Sierra Nevada and for our outstanding team!
Wading through #highseverityfire shrub patches all day has its perks when it's in #Yosemite!!! @olross.bsky.social is pushing boundaries in the field and in her research designs! #womeninwilderness #thisladyisbadass 🍁🌱🧪🌍
August 6, 2025 at 3:55 PM
It's been a blast kicking off my first research project in Yosemite this summer. I am so thankful to continue learning about the Sierra Nevada and for our outstanding team!
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...
agu.confex.com/agu/agu25/pr...
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,...
agu.confex.com
July 28, 2025 at 6:34 PM
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...
agu.confex.com/agu/agu25/pr...
Reposted by Julie Edwards
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...
dx.doi.org/10.1029/2024...
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...
dx.doi.org
July 24, 2025 at 1:37 PM
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...
dx.doi.org/10.1029/2024...
Reposted by Julie Edwards
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
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
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
academic.oup.com
July 25, 2025 at 4:52 PM
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
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
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 👀
July 19, 2025 at 3:52 AM
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 👀
Reposted by Julie Edwards
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!
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!
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...
doi.org
June 21, 2025 at 7:32 PM
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!
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!
Reposted by Julie Edwards
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: [email protected]
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: [email protected]
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...
cordis.europa.eu
June 16, 2025 at 8:59 PM
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: [email protected]
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: [email protected]
Reposted by Julie Edwards
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!
May 12, 2025 at 4:36 PM
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!
Reposted by Julie Edwards
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....
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...
agupubs.onlinelibrary.wiley.com
April 25, 2025 at 3:06 PM
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....
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.
April 21, 2025 at 5:23 PM
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.
Reposted by Julie Edwards
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/...
New work led by @drkatemarvel.bsky.social, with me and some old guy.
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
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...
agupubs.onlinelibrary.wiley.com
February 13, 2025 at 8:38 PM
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/...
New work led by @drkatemarvel.bsky.social, with me and some old guy.
agupubs.onlinelibrary.wiley.com/doi/10.1029/...
Reposted by Julie Edwards
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....
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...
www.tandfonline.com
February 12, 2025 at 3:41 PM
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....
Reposted by Julie Edwards
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....
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...
agupubs.onlinelibrary.wiley.com
February 12, 2025 at 3:00 PM
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....
Reposted by Julie Edwards
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
Story by @ericboodman.bsky.social
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
www.statnews.com
January 30, 2025 at 10:53 PM
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
Story by @ericboodman.bsky.social
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!
Refining past climate records with wood anatomy
Nature Reviews Earth & Environment - Julie Edwards explains how quantitative wood anatomy helps refine records of past climate.
rdcu.be
January 30, 2025 at 9:52 PM
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!