LelaCracks in time
#treerings
#treerings
ReDATA, University of Arizonaπ§Did you know that the single-year severe drought of 2002 was not unprecedented in comparison with multi-year persistent droughts? π³A tree-ring-based evaluation of water supply variability for the #SaltVerde River Basin by David Meko and Katherine Hirschboeck revealed that 28 other drought periods between 1814 and 2006 were continuously severe. Learn more from their dataset and report at https://doi.org/10.25422/azu.data.24783876 Image: David Meko (2023). CC0 #OpenData #OpenScience #TreeRings #Drought
Wanderin' Weeta πAnnual growth rings; a side view. New blog post: https://wanderinweeta.blogspot.com/2026/01/tide-blasted-log.html #VancouverIsland #Trees #TreeRings #NaturePhotography
Susannah πAnnual growth rings; a side view. New blog post: https://wanderinweeta.blogspot.com/2026/01/tide-blasted-log.html #VancouverIsland #Trees #TreeRings #NaturePhotography
π§π Greg CocksMulti-Disciplinary Reconstruction Of Debris Flow Events And Dynamics In The Northern Apennines, Italy - A Multiscale Approach Linking Ground Evidence With Climatic Triggers
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https://doi.org/10.1016/j.catena.2025.109708 <-- shared paper
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#GIS #spatial #mapping #engineeringgeology #massmovement #geology #landslide #debrisflow #multidisciplinary #geomorphology #pluvial #precipitation #dendrogeomorphological #treerings #dendrochronology #dating #chronology #reconstruction #geomorphmetry #processmodel #flowchart #spatialanalysis #spatiotemporal #mountains #orthophotos #historicphotos #geopedology #soil #hydraulic #alpedisucciso #trees #vegatation #downslope #risk #hazard #assessment #remotesensing #water #hydrology #rainfall #records #NorthernApennines #susceptibility #Italy
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https://doi.org/10.1016/j.catena.2025.109708 <-- shared paper
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#GIS #spatial #mapping #engineeringgeology #massmovement #geology #landslide #debrisflow #multidisciplinary #geomorphology #pluvial #precipitation #dendrogeomorphological #treerings #dendrochronology #dating #chronology #reconstruction #geomorphmetry #processmodel #flowchart #spatialanalysis #spatiotemporal #mountains #orthophotos #historicphotos #geopedology #soil #hydraulic #alpedisucciso #trees #vegatation #downslope #risk #hazard #assessment #remotesensing #water #hydrology #rainfall #records #NorthernApennines #susceptibility #Italy
earthlingTree Story by Valerie Trouet, 2020
The History of the World Written in Rings
Children around the world know that to tell how old a tree is, you count its rings. Few people, however, know that research into tree rings has also made amazing contributions to our understanding of Earth's climate history and its influences on human civilization over the past 2,000 years.
πβοΈ Did you know winter flow in #Siberiaβs Yenisei River has surged by 80% in just 25 years? Using tree rings to reconstruct 300 years of river history, Irina P. Panyushkina, David M Meko and co-researchers uncovered unprecedented increases in winter discharge, likely driven by permafrost thaw and #Arctic warming. Learn more from their dataset & article at https://doi.org/10.25422/azu.data.17086889 & https://doi.org/10.1088/1748-9326/ac3e20. Image: Panyushkina et al (2021). CC BY 4.0 #OpenData #OpenScience #ClimateChange #TreeRings
anlomedadI did something.
It's about the ColdBlob or SubPolarGyre or AMOC.
Specifically, about finding proxy locations on land for its annual evolution.
Taking SPG average sst in the months DJF and MAM, and computing also their year-on-year growth rate.
Then I computed the growth rate for DJF and MAM in all coordinates on land using Era5-Land 1951-2025.
And when the growthrate matches that of SPG within Β±0.5 Β°C, it gets a β
.
6 β
per decade gets a π΅ and counts toward selection.
Some more exclusion criteria applied, and I get a list of 315 locations on land for π΅matching DJF growthrate, and a whopping additional 11,460 locations for MAM
In a 0.1x0.1 grid.
All DJF locations are in Papua. No proxies I know of have been recovered from Papua yet. I know all speleothems / stalagmites in cavesπ΄ , and all treerings ever analyzedπ’ , thanks to #NOAA .
But MAM Β°C has more locations. All of Indonesia basically is THE SPG in terms of growthrate. A few trees and speleothems match, one cave covers the whole #Holocene ππ½
Large patches in Africa also match SPG in MAM. But only 2 short treering studies exist. No caves.
Middle and South America has plenty matching SPG MAM too, and a handful of trees and caves.
Yay.
#AMOC #climateChange #citizenscience #proxy #climateproxies #ColdBlob #SubPolarGyre
#Speleothem #treerings
~meoralis~Tell me Y
Ain't nothing like a heartwood ache
#wood #Holz #woodGrain #nature #Natur #tree #Baum #Baumstamm #treeTrunk #Baumstumpf #treeRings #growthRings #Jahresringe #TextureTuesday
Ain't nothing like a heartwood ache
#wood #Holz #woodGrain #nature #Natur #tree #Baum #Baumstamm #treeTrunk #Baumstumpf #treeRings #growthRings #Jahresringe #TextureTuesday
Clothing Sculptor D MelanderToday is the last day of the fundraiser I am holding for The Trevor Project, the leading suicide prevention organization for LGBTQ+ young people.
This one-time sale is available exclusively to subscribers of my newsletter. DM me and Iβll send you the link.
Among the works offered is this early drawing from 2005, Where I imagined every piece of clothing I ownβneatly folded, stitched end to end, and rolled into a dense spiral.
#textileart #clothingsculpture #fibreart #treerings
