#treering — Public Fediverse posts

@lauren @aeva

Useful brain fart...
I was thinking about tree ring counting and estimating the age of a wood thing.
It occurred that the farther away from the core of the tree a ring is, the shallower the arc over a given distance and angle and average distance between rings.
Extrapolating, it may not be necessary to count each and every ring of a tree to estimate it's age. It can even be used on furnature.
#treeRing #dendrochronology

@lauren @aeva

Useful brain fart...
I was thinking about tree ring counting and estimating the age of a wood thing.
It occurred that the farther away from the core of the tree a ring is, the shallower the arc over a given distance and angle and average distance between rings.
Extrapolating, it may not be necessary to count each and every ring of a tree to estimate it's age. It can even be used on furnature.
#treeRing #dendrochronology

@lauren @aeva

Useful brain fart...
I was thinking about tree ring counting and estimating the age of a wood thing.
It occurred that the farther away from the core of the tree a ring is, the shallower the arc over a given distance and angle and average distance between rings.
Extrapolating, it may not be necessary to count each and every ring of a tree to estimate it's age. It can even be used on furnature.
#treeRing #dendrochronology

@lauren @aeva

Useful brain fart...
I was thinking about tree ring counting and estimating the age of a wood thing.
It occurred that the farther away from the core of the tree a ring is, the shallower the arc over a given distance and angle and average distance between rings.
Extrapolating, it may not be necessary to count each and every ring of a tree to estimate it's age. It can even be used on furnature.
#treeRing #dendrochronology

I have written a small R-script to download all tree-ring data from the ITRDB (measurements and chronologies). Anyone can create a local copy, just in case the data might not be available anymore from @noaa.gov

https://github.com/RonaldVisser/Download_ITRDB

#dendrochronology #treering #opendata #share

A Fire Deficit Persists Across Diverse North American Forests Despite Recent Increases In Area Burned
--
https://doi.org/10.1038/s41467-025-56333-8 <-- shared paper
--
#GIS #spatial #mapping #spatialanalysis #spatiotemporal #fire #wildfire #bushfire #NorthAmerica #USA #Canada #management #planning #mitigation #climatechange #NAFSN #treering #firescar #forest #tree #vegetation #contemporary #model #severity #loss #cost #economics #ecosyastems #humanlife #infrastructure #risk #hazard #lossoflife #water #watersupply #waterresources

A Fire Deficit Persists Across Diverse North American Forests Despite Recent Increases In Area Burned
--
https://doi.org/10.1038/s41467-025-56333-8 <-- shared paper
--
#GIS #spatial #mapping #spatialanalysis #spatiotemporal #fire #wildfire #bushfire #NorthAmerica #USA #Canada #management #planning #mitigation #climatechange #NAFSN #treering #firescar #forest #tree #vegetation #contemporary #model #severity #loss #cost #economics #ecosyastems #humanlife #infrastructure #risk #hazard #lossoflife #water #watersupply #waterresources

A Fire Deficit Persists Across Diverse North American Forests Despite Recent Increases In Area Burned
--
https://doi.org/10.1038/s41467-025-56333-8 <-- shared paper
--
#GIS #spatial #mapping #spatialanalysis #spatiotemporal #fire #wildfire #bushfire #NorthAmerica #USA #Canada #management #planning #mitigation #climatechange #NAFSN #treering #firescar #forest #tree #vegetation #contemporary #model #severity #loss #cost #economics #ecosyastems #humanlife #infrastructure #risk #hazard #lossoflife #water #watersupply #waterresources

A Fire Deficit Persists Across Diverse North American Forests Despite Recent Increases In Area Burned
--
https://doi.org/10.1038/s41467-025-56333-8 <-- shared paper
--
#GIS #spatial #mapping #spatialanalysis #spatiotemporal #fire #wildfire #bushfire #NorthAmerica #USA #Canada #management #planning #mitigation #climatechange #NAFSN #treering #firescar #forest #tree #vegetation #contemporary #model #severity #loss #cost #economics #ecosyastems #humanlife #infrastructure #risk #hazard #lossoflife #water #watersupply #waterresources

A Fire Deficit Persists Across Diverse North American Forests Despite Recent Increases In Area Burned
--
https://doi.org/10.1038/s41467-025-56333-8 <-- shared paper
--
#GIS #spatial #mapping #spatialanalysis #spatiotemporal #fire #wildfire #bushfire #NorthAmerica #USA #Canada #management #planning #mitigation #climatechange #NAFSN #treering #firescar #forest #tree #vegetation #contemporary #model #severity #loss #cost #economics #ecosyastems #humanlife #infrastructure #risk #hazard #lossoflife #water #watersupply #waterresources

Cool study using #treering analysis to study precipitation variability over the past 4 centuries and aiding in the prediction of #extreme precipitation events and #droughts under future climate scenarios
https://www.sciencedirect.com/science/article/pii/S003101822500183X

New view on #treering analysis: Shining a new light on the classical concepts of carbon‐isotope dendrochronology https://nph.onlinelibrary.wiley.com/doi/10.1111/nph.20258

New publication. Risk of inflating correlation for repeated regressions in tree-ring reconstructions #research #treering

https://urldefense.com/v3/__https://link.springer.com/article/10.1007/s11676-024-01799-3__;!!KGKeukY!3wMt0DLmMGMurGOBB11tVBJz0KS4teG8sRCq8fXqbJIH77UAsAF3_MRYkYW-ZqW4xHHzr-MSr-htkFIrh2NfNwFsPwHGtyg$

"Forests moderate local climate by keeping their local environments cool. They do this partly by shading the land, but also by releasing moisture from their leaves. This process, called transpiration, requires energy, which is extracted from the surrounding air, thus cooling it. A single tree can transpire hundreds of liters of water in a day. Each hundred liters has a cooling effect equivalent to two domestic air conditioners for a day, calculates Ellison."

https://e360.yale.edu/features/how-deforestation-affecting-global-water-cycles-climate-change

It's now part of my new #Tegtmeier project: figure out how much eg. European and American land use change has impacted local, regional and continental weather. See above posting where I asked this question, too.

So I plot #treering widths alongside d18O from #speleothem (eg. stalagmite). Both proxies are precisely dated and (can) have annual resolution.

I would expect to see a warming =
trees grow more when, at locations from where "their weather comes", other forests are felled .
And a drying =
d18O increase in speleothems.

I use #GoogleEarth and my rudimentary history knowledge to determine certain locations in Australia, New Zealand, USA and Europe. tbc.🍿

#paleoclimate #ECS #climateModel

"Forests moderate local climate by keeping their local environments cool. They do this partly by shading the land, but also by releasing moisture from their leaves. This process, called transpiration, requires energy, which is extracted from the surrounding air, thus cooling it. A single tree can transpire hundreds of liters of water in a day. Each hundred liters has a cooling effect equivalent to two domestic air conditioners for a day, calculates Ellison."

https://e360.yale.edu/features/how-deforestation-affecting-global-water-cycles-climate-change

It's now part of my new #Tegtmeier project: figure out how much eg. European and American land use change has impacted local, regional and continental weather. See above posting where I asked this question, too.

So I plot #treering widths alongside d18O from #speleothem (eg. stalagmite). Both proxies are precisely dated and (can) have annual resolution.

I would expect to see a warming =
trees grow more when, at locations from where "their weather comes", other forests are felled .
And a drying =
d18O increase in speleothems.

I use #GoogleEarth and my rudimentary history knowledge to determine certain locations in Australia, New Zealand, USA and Europe. tbc.🍿

#paleoclimate #ECS #climateModel

#treering #18O #VPD #human #atmosphere #dry #forestry #agricultural #health #climatechange #drought
here is the link for full access: https://rdcu.be/duzAw

Recent human-induced atmospheric drying across Europe unprecedented in the last 400 years - combined #treering #18O analyses, Earth System model simulations and observations of the water vapour pressure deficit (#VPD) of the air show that this is due to #human influence. If the #atmosphere continues to #dry, impacts on natural ecosystem services, the #forestry and #agricultural sector and human #health are anticipated.

#climatechange #drought

https://www.nature.com/articles/s41561-023-01335-8

Tree Rings Reveal A New Kind Of Earthquake Threat To The Pacific Northwest
--
https://phys.org/news/2023-09-tree-reveal-kind-earthquake-threat.html <-- shared technical article
--
https://doi.org/10.1126/sciadv.adh4973 <-- shared paper
--
[as someone who has dove many, many times in the PNW, I am not sure I want that collection task ~wink~ ]
#GIS #spatial #mapping #PNW #earthquake #fault #faulting #paleoseismology #PacificNorthwest #treering #dating #relativedating #shallowfaults #model #modeling #naturalhazard #engineeringgeology #seismicevent #PugetSound #treeringdating #hazard #riskhazard #hazardmodel #regionalhazard #threat

Tree Rings Reveal A New Kind Of Earthquake Threat To The Pacific Northwest
--
https://phys.org/news/2023-09-tree-reveal-kind-earthquake-threat.html <-- shared technical article
--
https://doi.org/10.1126/sciadv.adh4973 <-- shared paper
--
[as someone who has dove many, many times in the PNW, I am not sure I want that collection task ~wink~ ]
#GIS #spatial #mapping #PNW #earthquake #fault #faulting #paleoseismology #PacificNorthwest #treering #dating #relativedating #shallowfaults #model #modeling #naturalhazard #engineeringgeology #seismicevent #PugetSound #treeringdating #hazard #riskhazard #hazardmodel #regionalhazard #threat

Tree Rings Reveal A New Kind Of Earthquake Threat To The Pacific Northwest
--
https://phys.org/news/2023-09-tree-reveal-kind-earthquake-threat.html <-- shared technical article
--
https://doi.org/10.1126/sciadv.adh4973 <-- shared paper
--
[as someone who has dove many, many times in the PNW, I am not sure I want that collection task ~wink~ ]
#GIS #spatial #mapping #PNW #earthquake #fault #faulting #paleoseismology #PacificNorthwest #treering #dating #relativedating #shallowfaults #model #modeling #naturalhazard #engineeringgeology #seismicevent #PugetSound #treeringdating #hazard #riskhazard #hazardmodel #regionalhazard #threat

Tree Rings Reveal A New Kind Of Earthquake Threat To The Pacific Northwest
--
https://phys.org/news/2023-09-tree-reveal-kind-earthquake-threat.html <-- shared technical article
--
https://doi.org/10.1126/sciadv.adh4973 <-- shared paper
--
[as someone who has dove many, many times in the PNW, I am not sure I want that collection task ~wink~ ]
#GIS #spatial #mapping #PNW #earthquake #fault #faulting #paleoseismology #PacificNorthwest #treering #dating #relativedating #shallowfaults #model #modeling #naturalhazard #engineeringgeology #seismicevent #PugetSound #treeringdating #hazard #riskhazard #hazardmodel #regionalhazard #threat

Tree Rings Reveal A New Kind Of Earthquake Threat To The Pacific Northwest
--
https://phys.org/news/2023-09-tree-reveal-kind-earthquake-threat.html <-- shared technical article
--
https://doi.org/10.1126/sciadv.adh4973 <-- shared paper
--
[as someone who has dove many, many times in the PNW, I am not sure I want that collection task ~wink~ ]
#GIS #spatial #mapping #PNW #earthquake #fault #faulting #paleoseismology #PacificNorthwest #treering #dating #relativedating #shallowfaults #model #modeling #naturalhazard #engineeringgeology #seismicevent #PugetSound #treeringdating #hazard #riskhazard #hazardmodel #regionalhazard #threat

The #medieval warm period was clearly colder then present #climate - results from #treering anatomy time series dating back 1170 years covering Fennoscandia: https://www.nature.com/articles/s41586-023-06176-4

A new episode of Muskian Twitter destruction?

Dendrochronologists wanting to move to Mastodon? There is a list for dendrochronologists at

https://ronaldvisser.github.io/Mastodon-Dendrochronology/

Please add yourself! We can continue the dendro-community on Mastodon
#dendrochronology #treering

5/

Extreme events may also be studied from different perspectives, widening the options to assess uncertainty.

E.g. [5] used "#TreeRing records to show that summer temperatures in 2021, as well as the rate of summertime warming during the last several decades, are unprecedented within the context of the last millennium" in "Pacific Northwest region of North America (PNW)".

The 2021 PNW summer conditions: "highly anomalous and of a magnitude with no comparable modern climatic analog" [5]

"Marking time.
Radiocarbon timestamps left in ancient tree rings by cosmic ray bombardments can date historical events with unprecedented precision"

This is a great read of how Miyake-events can be used to combine #dendrochronology and #14C for precise dating of historical events. The cosmic events lead to world wide records dated to a year.

https://www.science.org/content/article/marking-time-cosmic-ray-storms-can-pin-precise-dates-history-ancient-egypt-vikings

#archaeology #treering

Friend et al “Wood structure explained by complex spatial source-sink interactions” #TreeRing #WoodStructure https://www.nature.com/articles/s41467-022-35451-7

We have new paper out "Impacts of Climate and Tree Morphology on #TreeRing #Stable #Isotopes in Central Mongolia" lead by Caroline Leland of LDEO
https://academic.oup.com/treephys/advance-article/doi/10.1093/treephys/tpac142/6956957?utm_source=authortollfreelink&utm_campaign=treephys&utm_medium=email&guestAccessKey=dee526a1-75b4-4791-bad4-c74695852814

Wet while #treecoring Douglas fir near Mt Hood in 2020 with #idaho #treering lab #thicktrunktuesday

The list of #dendrochronologists on Mastodon is slowly growing.

Do you study #dendro #dendrochronology #treering #tree #growth #dendroecology #dendroprovenance or something else with tree rings?

@dendrochronology

Please go to: https://ronaldvisser.github.io/Mastodon-Dendrochronology/
and add yourself using the form

It would be great to continue growing the dendro-community here :)

The list of #dendrochronologists on Mastodon is slowly growing.

Do you study #dendro #dendrochronology #treering #tree #growth #dendroecology #dendroprovenance or something else with tree rings?

@dendrochronology

Please go to: https://ronaldvisser.github.io/Mastodon-Dendrochronology/
and add yourself using the form

It would be great to continue growing the dendro-community here :)

The list of #dendrochronologists on Mastodon is slowly growing.

Do you study #dendro #dendrochronology #treering #tree #growth #dendroecology #dendroprovenance or something else with tree rings?

@dendrochronology

Please go to: https://ronaldvisser.github.io/Mastodon-Dendrochronology/
and add yourself using the form

It would be great to continue growing the dendro-community here :)

The list of #dendrochronologists on Mastodon is slowly growing.

Do you study #dendro #dendrochronology #treering #tree #growth #dendroecology #dendroprovenance or something else with tree rings?

@dendrochronology

Please go to: https://ronaldvisser.github.io/Mastodon-Dendrochronology/
and add yourself using the form

It would be great to continue growing the dendro-community here :)

The list of #dendrochronologists on Mastodon is slowly growing.

Do you study #dendro #dendrochronology #treering #tree #growth #dendroecology #dendroprovenance or something else with tree rings?

@dendrochronology

Please go to: https://ronaldvisser.github.io/Mastodon-Dendrochronology/
and add yourself using the form

It would be great to continue growing the dendro-community here :)

Happy! Paper I wrote with Yardeni Vorst accepted! I received this message:

"I am pleased to inform you that the finalised version of your article entitled "Connecting ships: Using dendrochronological network analysis to determine the wood provenance of Roman-period river barges found in the Lower Rhine region and visualise wood use patterns" has now been accepted for publication in International Journal of Wood Culture. "

#archaeology #dendrochronology #tree #treering #Roman

The list of #dendrochronologists on Mastodon is slowly growing.

Do you study #dendro #dendrochronology #treering #Trees ?

Please go to: https://ronaldvisser.github.io/Mastodon-Dendrochronology/
and add yourself using the form

After a statistical crisis Friday afternoon and a weekend of work, I can replicate ALL of my results and my reconstruction is back on track. Now, time to take a break to play the new #Pokemon game. #paleoclimate #climate #geoscience #treering #hydroclimate #volcano #Atlantic

I have created a new list for dendrochronologists at https://ronaldvisser.github.io/Mastodon-Dendrochronology/

Please add yourself

#dendrochronology #treering @dendrochronology

Based on: https://github.com/nathanlesage/academics-on-mastodon