#variability — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #variability, aggregated by home.social.
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Which traits matter for linking individuals to ecology? Rota et al. reveal that behavior and physiology often outpace form in predicting ecological responses from individual performance to community and ecosystem levels.
Available now ahead of print!
https://www.journals.uchicago.edu/doi/10.1086/740828 -
I never realized there was so much variation in wine's alcohol content. The range varies from almost 16% to just below 9%. 🤯
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Upstream Hydrology And The Importance Of Snowmelt In Buffering Droughts In The Karnali Basin In Nepal
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https://doi.org/10.3389/frwa.2025.1720178 <-- shared paper
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https://nepalitimes.com/banner/a-karnali-portrait <-- shared media article
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https://youtu.be/ns7jytSwpng?si=rGm90l9FC_ahHum5 <-- shared video, Megh Ale, Nepal River Conservation Trust on the Karnali R.
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#water #hydrology #hydrography #surfacewater #catchment #waterresources #Nepal #Karnali #snowmelt #drought #SPHY #model #modeling #ERA5 #Himalya #river #basin #fluvial #pluvial #precipitation #rainfall #discharge #history #record #weather #climate #snow #climatechange #watersecurity #watersupply #conservation #planning #risk #hazard #rain #runoff #baseflow #waterbalance #evapotranspiration #ET #variability #spatiotemporal #change #time #streamflow #resilience -
Upstream Hydrology And The Importance Of Snowmelt In Buffering Droughts In The Karnali Basin In Nepal
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https://doi.org/10.3389/frwa.2025.1720178 <-- shared paper
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https://nepalitimes.com/banner/a-karnali-portrait <-- shared media article
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https://youtu.be/ns7jytSwpng?si=rGm90l9FC_ahHum5 <-- shared video, Megh Ale, Nepal River Conservation Trust on the Karnali R.
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#water #hydrology #hydrography #surfacewater #catchment #waterresources #Nepal #Karnali #snowmelt #drought #SPHY #model #modeling #ERA5 #Himalya #river #basin #fluvial #pluvial #precipitation #rainfall #discharge #history #record #weather #climate #snow #climatechange #watersecurity #watersupply #conservation #planning #risk #hazard #rain #runoff #baseflow #waterbalance #evapotranspiration #ET #variability #spatiotemporal #change #time #streamflow #resilience -
Upstream Hydrology And The Importance Of Snowmelt In Buffering Droughts In The Karnali Basin In Nepal
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https://doi.org/10.3389/frwa.2025.1720178 <-- shared paper
--
https://nepalitimes.com/banner/a-karnali-portrait <-- shared media article
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https://youtu.be/ns7jytSwpng?si=rGm90l9FC_ahHum5 <-- shared video, Megh Ale, Nepal River Conservation Trust on the Karnali R.
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#water #hydrology #hydrography #surfacewater #catchment #waterresources #Nepal #Karnali #snowmelt #drought #SPHY #model #modeling #ERA5 #Himalya #river #basin #fluvial #pluvial #precipitation #rainfall #discharge #history #record #weather #climate #snow #climatechange #watersecurity #watersupply #conservation #planning #risk #hazard #rain #runoff #baseflow #waterbalance #evapotranspiration #ET #variability #spatiotemporal #change #time #streamflow #resilience -
Upstream Hydrology And The Importance Of Snowmelt In Buffering Droughts In The Karnali Basin In Nepal
--
https://doi.org/10.3389/frwa.2025.1720178 <-- shared paper
--
https://nepalitimes.com/banner/a-karnali-portrait <-- shared media article
--
https://youtu.be/ns7jytSwpng?si=rGm90l9FC_ahHum5 <-- shared video, Megh Ale, Nepal River Conservation Trust on the Karnali R.
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#water #hydrology #hydrography #surfacewater #catchment #waterresources #Nepal #Karnali #snowmelt #drought #SPHY #model #modeling #ERA5 #Himalya #river #basin #fluvial #pluvial #precipitation #rainfall #discharge #history #record #weather #climate #snow #climatechange #watersecurity #watersupply #conservation #planning #risk #hazard #rain #runoff #baseflow #waterbalance #evapotranspiration #ET #variability #spatiotemporal #change #time #streamflow #resilience -
Upstream Hydrology And The Importance Of Snowmelt In Buffering Droughts In The Karnali Basin In Nepal
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https://doi.org/10.3389/frwa.2025.1720178 <-- shared paper
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https://nepalitimes.com/banner/a-karnali-portrait <-- shared media article
--
https://youtu.be/ns7jytSwpng?si=rGm90l9FC_ahHum5 <-- shared video, Megh Ale, Nepal River Conservation Trust on the Karnali R.
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#water #hydrology #hydrography #surfacewater #catchment #waterresources #Nepal #Karnali #snowmelt #drought #SPHY #model #modeling #ERA5 #Himalya #river #basin #fluvial #pluvial #precipitation #rainfall #discharge #history #record #weather #climate #snow #climatechange #watersecurity #watersupply #conservation #planning #risk #hazard #rain #runoff #baseflow #waterbalance #evapotranspiration #ET #variability #spatiotemporal #change #time #streamflow #resilience -
Showers bring early pop of colour to #Singapore cityscape through buds, #blossoms
"plants have evolved to respond physiologically to changes in the #environment,” said Mr Oh, adding that “flowering patterns will change in line with increased #climate #variability”. Other environmental factors include #temperature, light and #moisture levels, he said. The #public can visit trees.sg to find out where #flowering #trees can be seen"
#nature #climatechange
https://www.straitstimes.com/singapore/showers-bring-early-pop-of-colour-to-singapore-cityscape-through-buds-blossoms -
☕ Sociology, meet ecology: How the variability of coffee harvests can teach us about sustainable farming
https://phys.org/news/2025-11-sociology-ecology-variability-coffee-harvests.html
#coffee #agriculture #farming #argonomy #ecology #harvests #variability
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Kingman
Wenn Variabilität auf 100 % Auslastung trifft, explodieren die Wartezeiten – selbst kleine Störungen bringen das System zum Stillstand. Nicht die Variabilität ist das Problem, sondern Systeme ohne Puffer: Wer ohne Slack plant, plant den Stillstand.
https://no-bullshit-agile.de/wip/
#Kingman #Variability #Utilization
5/x
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Embrace the uncertainty
Ever since Werner Heisenberg formulated the uncertainty principle, physics has been grappling with the unsettling realization that the universe does not function like clockwork—a metaphor Newton introduced and which held sway for centuries. In a world where predictability and uncertainty intertwine, interpretations range from die-hard determinists, who reject quantum events despite the mounting evidence, to more esoteric merchants of doubt who exploit the ambiguity.
If Werner Heisenberg […]
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In case anyone's keeping score, the idea that JFETs have hugely variable properties and that this problem cannot be - or at least has not been - fixed with different design or manufacturing practices, this batch showed it pretty clearly to me.
20 J113s, minus 1 fake, equals 19 devices. I measured the Vgs / pinch-off voltage and the Id / drain current in my test rig. The result?
6 very distinct bins with between 2 and 6 devices in each. Vgs overall varied from (-) 1.30 V to 2.11 V (variance is 38% of the larger value, or 62% of the smaller...), and Id from 5.7 mA to 12.8 mA, a spread of 125% (!) of the smaller value.
No wonder so many JFET circuits just don't work if you don't hand-match the devices.
#variance #variability #characteristics #measure #measurement #match #JFET #tolerance
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In case anyone's keeping score, the idea that JFETs have hugely variable properties and that this problem cannot be - or at least has not been - fixed with different design or manufacturing practices, this batch showed it pretty clearly to me.
20 J113s, minus 1 fake, equals 19 devices. I measured the Vgs / pinch-off voltage and the Id / drain current in my test rig. The result?
6 very distinct bins with between 2 and 6 devices in each. Vgs overall varied from (-) 1.30 V to 2.11 V (variance is 38% of the larger value, or 62% of the smaller...), and Id from 5.7 mA to 12.8 mA, a spread of 125% (!) of the smaller value.
No wonder so many JFET circuits just don't work if you don't hand-match the devices.
#variance #variability #characteristics #measure #measurement #match #JFET #tolerance
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In case anyone's keeping score, the idea that JFETs have hugely variable properties and that this problem cannot be - or at least has not been - fixed with different design or manufacturing practices, this batch showed it pretty clearly to me.
20 J113s, minus 1 fake, equals 19 devices. I measured the Vgs / pinch-off voltage and the Id / drain current in my test rig. The result?
6 very distinct bins with between 2 and 6 devices in each. Vgs overall varied from (-) 1.30 V to 2.11 V (variance is 38% of the larger value, or 62% of the smaller...), and Id from 5.7 mA to 12.8 mA, a spread of 125% (!) of the smaller value.
No wonder so many JFET circuits just don't work if you don't hand-match the devices.
#variance #variability #characteristics #measure #measurement #match #JFET #tolerance
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In case anyone's keeping score, the idea that JFETs have hugely variable properties and that this problem cannot be - or at least has not been - fixed with different design or manufacturing practices, this batch showed it pretty clearly to me.
20 J113s, minus 1 fake, equals 19 devices. I measured the Vgs / pinch-off voltage and the Id / drain current in my test rig. The result?
6 very distinct bins with between 2 and 6 devices in each. Vgs overall varied from (-) 1.30 V to 2.11 V (variance is 38% of the larger value, or 62% of the smaller...), and Id from 5.7 mA to 12.8 mA, a spread of 125% (!) of the smaller value.
No wonder so many JFET circuits just don't work if you don't hand-match the devices.
#variance #variability #characteristics #measure #measurement #match #JFET #tolerance
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In case anyone's keeping score, the idea that JFETs have hugely variable properties and that this problem cannot be - or at least has not been - fixed with different design or manufacturing practices, this batch showed it pretty clearly to me.
20 J113s, minus 1 fake, equals 19 devices. I measured the Vgs / pinch-off voltage and the Id / drain current in my test rig. The result?
6 very distinct bins with between 2 and 6 devices in each. Vgs overall varied from (-) 1.30 V to 2.11 V (variance is 38% of the larger value, or 62% of the smaller...), and Id from 5.7 mA to 12.8 mA, a spread of 125% (!) of the smaller value.
No wonder so many JFET circuits just don't work if you don't hand-match the devices.
#variance #variability #characteristics #measure #measurement #match #JFET #tolerance
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The Stream of Life sometimes glides smoothly on, through flowry meadows and enamell’d planes. At other times it draggs a winding reluctant Course through offensive Boggs and dismal gloomy Swamps. The same road now leads us thro’ a spacious Country fraught with evry delightful object, Then plunges us at once, into miry Sloughs, or stops our passage with craggy and inaccessible mountains. The free roving Songster of the forest, now rambles unconfin’d, and hopps from Spray to Spray but the next hour perhaps he alights to pick the scattered Grain and is entangled in the Snare. The Ship, which, wafted by a favourable gale, sails prosperously upon the peaceful Surface, by a sudden Change of weather may be tossed by the Tempest, and driven by furious, opposite winds, upon rocks or quicksands. In short nothing in this world enjoys a constant Series of Joy and prosperity.
John Adams (1735-1826) American lawyer, Founding Father, statesman, US President (1797-1801)
Diary (1756-03-27)Sourcing, notes: wist.info/adams-john/30195/
#quote #quotes #quotation #qotd #humancondition #struggle #change #difficulty #disaster #fortune #joy #life #metaphor #misfortune #problems #prosperity #troubles #variability
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A quotation from Nassim Nicholas Taleb
Don’t cross a river if it is four feet deep on average.
Nassim Nicholas Taleb (b. 1960) Lebanese-American essayist, statistician, risk analyst, aphorist
The Black Swan, Part 2, ch. 10 “The Scandal of Prediction” (2007)Sourcing, notes: wist.info/taleb-nassim-nichola…
#quote #quotes #quotation #qotd #blackswan #assumptions #average #danger #expectations #mean #variability #variance
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A quotation from Nassim Nicholas Taleb
Don’t cross a river if it is four feet deep on average.
Nassim Nicholas Taleb (b. 1960) Lebanese-American essayist, statistician, risk analyst, aphorist
The Black Swan, Part 2, ch. 10 “The Scandal of Prediction” (2007)Sourcing, notes: wist.info/taleb-nassim-nichola…
#quote #quotes #quotation #qotd #blackswan #assumptions #average #danger #expectations #mean #variability #variance
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A quotation from Nassim Nicholas Taleb
Don’t cross a river if it is four feet deep on average.
Nassim Nicholas Taleb (b. 1960) Lebanese-American essayist, statistician, risk analyst, aphorist
The Black Swan, Part 2, ch. 10 “The Scandal of Prediction” (2007)Sourcing, notes: wist.info/taleb-nassim-nichola…
#quote #quotes #quotation #qotd #blackswan #assumptions #average #danger #expectations #mean #variability #variance
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Centuries ago, I published a manuscript on BioRχiv about the love/hate relationship between variability and robustness in embryogenesis.
And now, it's published in Science! I am so proud 🥳
https://www.science.org/doi/10.1126/science.adh1145
We went through three (3!) rounds of revisions. Although we did not change a comma in the abstract, the revisions improved the quality of the work very much (we nearly doubled the sample size and added an entire figure).
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🥁🥁🥁Sim Alert! We are so excited to share Projectile Data Lab, where students can collect and analyze real-world data with #variability! Not only can Projectile Data Lab be used as a true virtual lab, students can also use it to explore fundamental concepts of measurement uncertainty, random variables in a system, and propagation of error. phet.colorado.edu/en/simulations/projectile-data-lab
#physics #chatphysics #projectileMotion -
An illusion of #predictability in scientific results: Even experts confuse #inferential uncertainty and outcome #variability
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The photometric #variability of massive #stars due to #GravityWaves excited by core convection: https://www.nature.com/articles/s41550-023-02040-7 -> What does a ‘twinkling’ star sound like? https://news.northwestern.edu/stories/2023/07/listen-to-a-star-twinkle/
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Past And Future Warming – Direct Comparison On Multi-Century Timescales
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https://doi.org/10.5194/cp-18-911-2022 <-- shared paper / technical note
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#GIS #spatial #mapping #anthropogenic #climatechange #humanimpact #global #temperature #millenia #centuries #model #modeling #spatialanalysis #IPCC #globalmeantemperatures #paleotemperature #reconstruction #warming #impacts #multicentury #greenhousegasemissions #emissions #holocene #spatiotemporal #variability -
#Orcas off #BritishColumbia coast have been #critically #endangered for many years & #scientists have found that a lack of #genetic #variability may be why.
A new study out of #WashingtonState - published March 23 on the journal Nature, has found that $inbreeding depression — the reduced #survival & #fertility of offspring that are a product of inbreeding — is preventing the SouthernResident #KillerWhale #population from growing.
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Pacific Shoreline Erosion And Accretion Patterns Controlled By El Niño/Southern Oscillation
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https://doi.org/10.1038/s41561-022-01117-8 <-- shared paper
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#GIS #spatial #mapping #hydrology #hydrospatial #pacificocean #Pacific #marine #experience #event #future #planning #monitoring #ENSO #ElNino #SouthernOscillation #interannual #climate #variability #climatechange #shoreline #coast #coastline #shoreline #sandy #beach #beaches #erosion #accretion #remotesensing #Landsat #imagery #change #changemanagement #PacificRim #regional #model #monitoring #coastalengineering #coastalresilience #coastalerosion #water -
Pacific Shoreline Erosion And Accretion Patterns Controlled By El Niño/Southern Oscillation
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https://doi.org/10.1038/s41561-022-01117-8 <-- shared paper
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#GIS #spatial #mapping #hydrology #hydrospatial #pacificocean #Pacific #marine #experience #event #future #planning #monitoring #ENSO #ElNino #SouthernOscillation #interannual #climate #variability #climatechange #shoreline #coast #coastline #shoreline #sandy #beach #beaches #erosion #accretion #remotesensing #Landsat #imagery #change #changemanagement #PacificRim #regional #model #monitoring #coastalengineering #coastalresilience #coastalerosion #water -
Pacific Shoreline Erosion And Accretion Patterns Controlled By El Niño/Southern Oscillation
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https://doi.org/10.1038/s41561-022-01117-8 <-- shared paper
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#GIS #spatial #mapping #hydrology #hydrospatial #pacificocean #Pacific #marine #experience #event #future #planning #monitoring #ENSO #ElNino #SouthernOscillation #interannual #climate #variability #climatechange #shoreline #coast #coastline #shoreline #sandy #beach #beaches #erosion #accretion #remotesensing #Landsat #imagery #change #changemanagement #PacificRim #regional #model #monitoring #coastalengineering #coastalresilience #coastalerosion #water -
Pacific Shoreline Erosion And Accretion Patterns Controlled By El Niño/Southern Oscillation
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https://doi.org/10.1038/s41561-022-01117-8 <-- shared paper
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#GIS #spatial #mapping #hydrology #hydrospatial #pacificocean #Pacific #marine #experience #event #future #planning #monitoring #ENSO #ElNino #SouthernOscillation #interannual #climate #variability #climatechange #shoreline #coast #coastline #shoreline #sandy #beach #beaches #erosion #accretion #remotesensing #Landsat #imagery #change #changemanagement #PacificRim #regional #model #monitoring #coastalengineering #coastalresilience #coastalerosion #water -
Pacific Shoreline Erosion And Accretion Patterns Controlled By El Niño/Southern Oscillation
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https://doi.org/10.1038/s41561-022-01117-8 <-- shared paper
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#GIS #spatial #mapping #hydrology #hydrospatial #pacificocean #Pacific #marine #experience #event #future #planning #monitoring #ENSO #ElNino #SouthernOscillation #interannual #climate #variability #climatechange #shoreline #coast #coastline #shoreline #sandy #beach #beaches #erosion #accretion #remotesensing #Landsat #imagery #change #changemanagement #PacificRim #regional #model #monitoring #coastalengineering #coastalresilience #coastalerosion #water -
Who is here working on #EarthSystem #modeling #CarbonCycle #ClimateChange #ocean #biogeochemistry #predictability #variability?
I'd like to follow you. -
It rarely happens I am happy publishing a new blog post, but reading my old ones is really nice. If only because they are on topics I am really interested in 😊, like #variability & #nonlinearity.
This post from 2012 explains why cloud structure is important for radiative transfer (how solar radiation from the sun travels through the atmosphere). It thus describes why radiative transfer is so hard to do in climate & weather models.
Radiative transfer & cloud structure http://variable-variability.blogspot.com/2012/10/radiative-transfer-and-cloud-structure.html