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#metrology — Public Fediverse posts

Live and recent posts from across the Fediverse tagged #metrology, aggregated by home.social.

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  1. ALEXBSR @alexbsr ·

    Calibration is priced by the work an instrument requires — bench time, test points, reference standards. It is not priced as a fraction of what the instrument is worth. That single fact reshapes what used test equipment is actually worth once it's tested across a price range.

    At one accredited lab, calibrating a $475 Keithley multimeter runs about 12.6% of its sale price, and closer to 23% at retail rates. Calibrating a $78,500 20 GHz oscilloscope runs about 1.2%. Same service, wildly different weight on the sale price.

    The counterpoint: large refurbishers like Keysight and Tektronix recalibrate everything on intake regardless of certificate status. For that channel a fresh certificate doesn't save the buyer a cost they'd pay anyway. What it does is narrow the risk that the unit turns out to be a repair job.

    What that means for sellers, and why installed options and probe accessories often move price more than the calibration sticker, is in the full piece on used test equipment value.

    buysellram.com/blog/what-is-us

    #testequipment #calibration #electronicstest #itad #oscilloscope #metrology
  2. 💧🌏 Greg Cocks @[email protected] ·

    [Open] Data Related To Flood Mapping [Canada]
    --
    natural-resources.canada.ca/sc <-- shared link to technical details
    --
    app.geo.ca/en-ca/map-browser/r <-- shared map/data-portal link, Canada Flood Map Inventory (CFM)
    --
    open.canada.ca/data/en/dataset <-- shared data-portal link, Canada Flood Susceptibility Index
    --
    doi.org/10.3390/ECWS-7-14235 <-- shared (2023) paper
    --
    doi.org/10.1002/2017WR020917 <-- shared (2017) paper
    --
    H/T @Michael DePue | VP & AtkinsRéalis Fellow for Water Resources Engineering | PE, PMP, CFM
    “At the Canadian Water Resources Association National Conference in Winnipeg, colleagues shared insights from Canada's Flood Hazard Identification and Mapping Program. This initiative has seen over 400 flood mapping projects and more than 1,000 flood hazard maps produced, supported by a substantial investment of $164.2 million from 2024 to 2028.
    Two key datasets:
    • The Canada Flood Map Inventory, which records the locations of flood hazard maps and provides information on how to access them.
    • The national Flood Susceptibility Index, a machine-learning assessment of flood-prone areas, including regions that have not been mapped in detail.
    When these two layers are combined on a single screen, it becomes clear where future mapping efforts should be directed — specifically, areas with high susceptibility that currently lack detailed maps…”
    #water #hydrography #flood #flooding #risk #hazard #model #modeling #fedscience #publicsafety #humaninpacts #opendata #Canada #GIS #spatial #mapping #damage #infrastructure #floodmapping #prediction #spatialanalysis #spatiotemporal #historic #current #future #preduction #extremeweather #metrology #rainfall #precipitation #atmosphericriver #FloodMapInventory #CFM #floodhazard #FloodSusceptibilityIndex #floodprone #research #susceptibility
    @NRCAN

    #water #hydrography #flood #flooding #risk #hazard
  3. 💧🌏 Greg Cocks @GregCocks ·

    [Open] Data Related To Flood Mapping [Canada]
    --
    natural-resources.canada.ca/sc <-- shared link to technical details
    --
    app.geo.ca/en-ca/map-browser/r <-- shared map/data-portal link, Canada Flood Map Inventory (CFM)
    --
    open.canada.ca/data/en/dataset <-- shared data-portal link, Canada Flood Susceptibility Index
    --
    doi.org/10.3390/ECWS-7-14235 <-- shared (2023) paper
    --
    doi.org/10.1002/2017WR020917 <-- shared (2017) paper
    --
    H/T @Michael DePue | VP & AtkinsRéalis Fellow for Water Resources Engineering | PE, PMP, CFM
    “At the Canadian Water Resources Association National Conference in Winnipeg, colleagues shared insights from Canada's Flood Hazard Identification and Mapping Program. This initiative has seen over 400 flood mapping projects and more than 1,000 flood hazard maps produced, supported by a substantial investment of $164.2 million from 2024 to 2028.
    Two key datasets:
    • The Canada Flood Map Inventory, which records the locations of flood hazard maps and provides information on how to access them.
    • The national Flood Susceptibility Index, a machine-learning assessment of flood-prone areas, including regions that have not been mapped in detail.
    When these two layers are combined on a single screen, it becomes clear where future mapping efforts should be directed — specifically, areas with high susceptibility that currently lack detailed maps…”

    @NRCAN

    #water #hydrography #flood #flooding #risk #hazard
  4. 💧🌏 Greg Cocks @[email protected] ·

    Impact Of Reservoir Storage On Propagation From Meteorological To Hydrological Drought
    --
    doi.org/10.1016/j.jhydrol.2026 <-- shared paper
    --
    H/T @DrAjayGupta | Post Doctoral Fellow, IIT Bombay | Ph.D. in Hydrology, IIT Roorkee | Commonwealth Split-site Fellow, University of Birmingham I M.Tech in Water Resources Engineering, NIT Silchar | B.E. in Civil Engineering, PCE Nagpur.
    “🌍 Why is this important?
    While reservoirs are widely recognized for mitigating drought impacts, their role in controlling how drought propagates through the hydrological cycle has remained largely unexplored. In this study, [the authors] investigate how reservoir storage influences the transition of drought from meteorological to agricultural to reservoir to streamflow drought across the semi-arid Krishna River Basin, India.
    🔍 THIS STUDY ADDRESSES TWO KEY RESEARCH QUESTIONS:
    ✅ How do drought propagation time (initiation, peak, and termination) change from meteorological to agricultural, reservoir, and streamflow droughts across different timescales and threshold values?
    ✅ How does reservoir storage influence drought propagation between upstream and downstream reservoirs using the Downstreamness concept?
    📌 KEY FINDINGS
    🔹 Drought propagation differs substantially across drought types because each component of the hydrological system responds at different rates.
    🔹 Reservoirs significantly delay the propagation of drought by buffering water deficits, particularly between agricultural and streamflow drought.
    🔹 Mild and moderate upstream reservoir droughts rarely propagate downstream, whereas severe upstream droughts consistently transmit downstream, leading to longer duration, greater severity, and delayed onset.
    🔹 The downstreamness analysis reveals dynamic shifts in water storage between upstream and downstream reservoirs throughout drought development and recovery, providing valuable insights for reservoir operation and basin-scale drought management…”
    --
    “HIGHLIGHTS
    • Reservoir storage impact on drought propagation from meteorological-to-hydrological drought.
    • Drought propagation timeframe: initiation, peak and termination are checked.
    • Impact assessment using hydrological connection: upstream to downstream reservoirs.
    • Severe upstream droughts propagate downstream with increased duration and severity.
    • During drought periods water-storage concentration shifts from downstream to upstream..."
    #Drought #DroughtPropagation #Reservoirs #WaterResources #WaterManagement #RiverBasinManagement #KrishnaRiverBasin #Downstreamness #India #climatechange #reservoir #storage #hydrology #water #hydrologiccycle #watersecurity #planning #policy #KrishnaRiver #weather #climate #metrology #agriculture #farming #streamflow #model #modeling #spatiotemporal #spatialanalysis

    #drought #droughtpropagation #reservoirs #waterresources #watermanagement #riverbasinmanagement
  5. 💧🌏 Greg Cocks @GregCocks ·

    Impact Of Reservoir Storage On Propagation From Meteorological To Hydrological Drought
    --
    doi.org/10.1016/j.jhydrol.2026 <-- shared paper
    --
    H/T @DrAjayGupta | Post Doctoral Fellow, IIT Bombay | Ph.D. in Hydrology, IIT Roorkee | Commonwealth Split-site Fellow, University of Birmingham I M.Tech in Water Resources Engineering, NIT Silchar | B.E. in Civil Engineering, PCE Nagpur.
    “🌍 Why is this important?
    While reservoirs are widely recognized for mitigating drought impacts, their role in controlling how drought propagates through the hydrological cycle has remained largely unexplored. In this study, [the authors] investigate how reservoir storage influences the transition of drought from meteorological to agricultural to reservoir to streamflow drought across the semi-arid Krishna River Basin, India.
    🔍 THIS STUDY ADDRESSES TWO KEY RESEARCH QUESTIONS:
    ✅ How do drought propagation time (initiation, peak, and termination) change from meteorological to agricultural, reservoir, and streamflow droughts across different timescales and threshold values?
    ✅ How does reservoir storage influence drought propagation between upstream and downstream reservoirs using the Downstreamness concept?
    📌 KEY FINDINGS
    🔹 Drought propagation differs substantially across drought types because each component of the hydrological system responds at different rates.
    🔹 Reservoirs significantly delay the propagation of drought by buffering water deficits, particularly between agricultural and streamflow drought.
    🔹 Mild and moderate upstream reservoir droughts rarely propagate downstream, whereas severe upstream droughts consistently transmit downstream, leading to longer duration, greater severity, and delayed onset.
    🔹 The downstreamness analysis reveals dynamic shifts in water storage between upstream and downstream reservoirs throughout drought development and recovery, providing valuable insights for reservoir operation and basin-scale drought management…”
    --
    “HIGHLIGHTS
    • Reservoir storage impact on drought propagation from meteorological-to-hydrological drought.
    • Drought propagation timeframe: initiation, peak and termination are checked.
    • Impact assessment using hydrological connection: upstream to downstream reservoirs.
    • Severe upstream droughts propagate downstream with increased duration and severity.
    • During drought periods water-storage concentration shifts from downstream to upstream..."

    #drought #droughtpropagation #reservoirs #waterresources #watermanagement #riverbasinmanagement
  6. 💧🌏 Greg Cocks @[email protected] ·

    Watching A #NOAA #Webinar on Flash Droughts
    --
    noaaresearch.webex.com/wbxmjs/ <-- shared NOAA Summer Science Series individual webinar
    --
    drought.gov/what-is-drought/fl <-- shared NOAA overview technical article
    --
    star.nesdis.noaa.gov/star/NOAA <-- subscribe to the NOAA Summer Science Series
    --
    doi.org/10.1038/s41612-024-006 <-- shared paper
    --
    communities.springernature.com <-- shared technical article (derived from paper above)
    H/T @Jeffrey Basara PhD, MBA | Chair and Professor - Department of Environmental, Earth, and Atmospheric Sciences, University of Massachusetts Lowell | Co-Founder - American Prime Sustainable Solutions
    [Flash floods? not TOO hard to conceptualise.
    Flash drought? harder to 'get my head around', but H/T / presenter does an excellent job!]
    "Not all droughts are the same. In some cases, drought rapidly intensifies at subseasonal to seasonal scales with significant impacts to agriculture and water resources along with the increased propensity for heatwaves and wildfires. Like all droughts, flash drought begins with a precipitation deficit. However, both evaporative demand and soil moisture are critical flash drought variables, and identifying and monitoring the desiccation of the terrestrial surface is key for determining flash drought development and associated impacts. While recent advances in knowledge and monitoring of flash drought have occurred, fundamental questions remain in the state of the science. What are the overall mechanistic relationships between atmospheric demand, evaporative stress, terrestrial desiccation, and precipitation that drive the progression of flash drought? Do regional characteristics of the environment impact the evolution of flash drought? What are the scales of predictability for flash drought? Finally, how will flash drought frequency and intensity evolve in a changing climate system"
    --
    "Flash drought intensifies rapidly due to changes in precipitation, temperature, wind, and radiation. These changes in the weather increase evapotranspiration and lower soil moisture. Flash droughts can cause extensive damage to agriculture, economies, and ecosystems if they are not predicted and discovered early..."
    #water #hydrology #fedscience #publicgood #hydrologicdrought #waterdeficit #spatialanalysis #spatiotemporal #watersecurity #risk #hazard #humanimpacts #streamflow #riverflow #groundwater #surfacewater #climate #weather #climatechange #extremeweather #atmosphere #metrology #regional #global #farming #agriculture #fluvial #pluvial #rainfall #precipitation #cloudcover #energy #heat #temperature #ET #evapotranspiration #farming #agriculture #foodsecurity #waterresources #dynamicsystems #watermanagement #flashdrought #drought #susceptibility #monitoring #prediction #model #modeling
    @noaa

    #noaa #webinar #water #hydrology #fedscience #publicgood
  7. 💧🌏 Greg Cocks @GregCocks ·

    Watching A on Flash Droughts
    --
    noaaresearch.webex.com/wbxmjs/ <-- shared NOAA Summer Science Series individual webinar
    --
    drought.gov/what-is-drought/fl <-- shared NOAA overview technical article
    --
    star.nesdis.noaa.gov/star/NOAA <-- subscribe to the NOAA Summer Science Series
    --
    doi.org/10.1038/s41612-024-006 <-- shared paper
    --
    communities.springernature.com <-- shared technical article (derived from paper above)
    H/T @Jeffrey Basara PhD, MBA | Chair and Professor - Department of Environmental, Earth, and Atmospheric Sciences, University of Massachusetts Lowell | Co-Founder - American Prime Sustainable Solutions
    [Flash floods? not TOO hard to conceptualise.
    Flash drought? harder to 'get my head around', but H/T / presenter does an excellent job!]
    "Not all droughts are the same. In some cases, drought rapidly intensifies at subseasonal to seasonal scales with significant impacts to agriculture and water resources along with the increased propensity for heatwaves and wildfires. Like all droughts, flash drought begins with a precipitation deficit. However, both evaporative demand and soil moisture are critical flash drought variables, and identifying and monitoring the desiccation of the terrestrial surface is key for determining flash drought development and associated impacts. While recent advances in knowledge and monitoring of flash drought have occurred, fundamental questions remain in the state of the science. What are the overall mechanistic relationships between atmospheric demand, evaporative stress, terrestrial desiccation, and precipitation that drive the progression of flash drought? Do regional characteristics of the environment impact the evolution of flash drought? What are the scales of predictability for flash drought? Finally, how will flash drought frequency and intensity evolve in a changing climate system"
    --
    "Flash drought intensifies rapidly due to changes in precipitation, temperature, wind, and radiation. These changes in the weather increase evapotranspiration and lower soil moisture. Flash droughts can cause extensive damage to agriculture, economies, and ecosystems if they are not predicted and discovered early..."

    @noaa

    #noaa #webinar #water #hydrology #fedscience #publicgood
  8. 💧🌏 Greg Cocks @[email protected] ·

    Why The Media Keep Quoting The Same Climate Scientist
    (Daniel Swain has a knack for breaking down the complexities of climate and weather into precise but accessible ideas.)
    --
    theatlantic.com/science/2026/0 <-- shared media article
    --
    doi.org/10.1038/s43017-024-006 <-- shared paper example, “Hydroclimate Volatility On A Warming Earth”
    --
    youtube.com/@weatherwest <-- Shared YouTube channel: Weather West
    --
    H/T @DanielSwain
    "The success of the climatologist Daniel Swain rests on a simple foundation: His specialty has long been how global climate change messes with local weather. Many climatologists focus on subjects that seem arcane: mean global temperatures registered in Celsius, radiative forcing, the reflectivity of clouds. Swain, in contrast, talks in plain English—constantly, really, in interviews with CBS, NBC, the Weather Channel, and The Washington Post, as well as on his own blog and YouTube channel, Weather West—about the wind and the rain and the temperature outside, and how they are influenced by the larger forces of the atmosphere.
    “He uses language that is both precise and deep but very accessible, and that’s why you see him quoted everywhere,” Mark Hertsgaard, a longtime climate journalist who is the executive director of Covering Climate Now, told [the Atlantic]. According to Swain’s own tally, he does more than 200 media interviews a year; he is, in other words, about as omnipresent as a weather guy can be in people’s lives. A climate scientist at the University of California Agriculture and Natural Resources’ research unit, Swain is not exactly a “weather influencer,” that breed of streamer who delivers breathless updates about the next big storm. But he has become one of the country’s most influential explainers of the weather’s relationship to the climate; you’ve almost certainly heard from him if you consume just a scintilla of climate-related news…”
    #global #climatechange #extremeweather #climatescientist #climate #scientist #media #hydroclimate #whiplash #WeatherWest #weather #localweather #metrology #connection #relationship #education #publicscience #extremeweather #climatology #wind #rainfall #precipitation #temperature #atmosphere
    @TheAtlantic

    #global #climatechange #extremeweather #climatescientist #climate #scientist
  9. 💧🌏 Greg Cocks @GregCocks ·

    Why The Media Keep Quoting The Same Climate Scientist
    (Daniel Swain has a knack for breaking down the complexities of climate and weather into precise but accessible ideas.)
    --
    theatlantic.com/science/2026/0 <-- shared media article
    --
    doi.org/10.1038/s43017-024-006 <-- shared paper example, “Hydroclimate Volatility On A Warming Earth”
    --
    youtube.com/@weatherwest <-- Shared YouTube channel: Weather West
    --
    H/T @DanielSwain
    "The success of the climatologist Daniel Swain rests on a simple foundation: His specialty has long been how global climate change messes with local weather. Many climatologists focus on subjects that seem arcane: mean global temperatures registered in Celsius, radiative forcing, the reflectivity of clouds. Swain, in contrast, talks in plain English—constantly, really, in interviews with CBS, NBC, the Weather Channel, and The Washington Post, as well as on his own blog and YouTube channel, Weather West—about the wind and the rain and the temperature outside, and how they are influenced by the larger forces of the atmosphere.
    “He uses language that is both precise and deep but very accessible, and that’s why you see him quoted everywhere,” Mark Hertsgaard, a longtime climate journalist who is the executive director of Covering Climate Now, told [the Atlantic]. According to Swain’s own tally, he does more than 200 media interviews a year; he is, in other words, about as omnipresent as a weather guy can be in people’s lives. A climate scientist at the University of California Agriculture and Natural Resources’ research unit, Swain is not exactly a “weather influencer,” that breed of streamer who delivers breathless updates about the next big storm. But he has become one of the country’s most influential explainers of the weather’s relationship to the climate; you’ve almost certainly heard from him if you consume just a scintilla of climate-related news…”

    @TheAtlantic

    #global #climatechange #extremeweather #climatescientist #climate #scientist
  10. Steve Woods @[email protected] ·

    The changing world of #metrology.

    "Scientists said the region was missing about 650,000 sq kilometres (250,000 sq miles) of sea ice, compared with the average between 1991 and 2020. That is an area about the size of France and almost 10 times the size of Tasmania."

    What! No Wales?

    theguardian.com/world/2026/jun

    #metrology
  11. Steve Woods @[email protected] ·

    The changing world of #metrology.

    "Scientists said the region was missing about 650,000 sq kilometres (250,000 sq miles) of sea ice, compared with the average between 1991 and 2020. That is an area about the size of France and almost 10 times the size of Tasmania."

    What! No Wales?

    theguardian.com/world/2026/jun

    #metrology
  12. Dr. John Barentine FRAS @[email protected] ·

    #LightPollution research spans many fields, but progress is slowed because astronomers, ecologists, and lighting engineers use different rulers to measure the same night sky. This communication breakdown complicates how we manage outdoor lighting as a shared public resource.

    Read more about why clearing up these discrepancies eliminates misunderstandings and gives city planners the precise data needed for better policy: darkskyconsulting.com/blog/the

    #DarkSkies #Metrology #Standards

    #lightpollution #darkskies #metrology #standards
  13. Dr. John Barentine FRAS @[email protected] ·

    #LightPollution research spans many fields, but progress is slowed because astronomers, ecologists, and lighting engineers use different rulers to measure the same night sky. This communication breakdown complicates how we manage outdoor lighting as a shared public resource.

    Read more about why clearing up these discrepancies eliminates misunderstandings and gives city planners the precise data needed for better policy: darkskyconsulting.com/blog/the

    #DarkSkies #Metrology #Standards

    #lightpollution #darkskies #metrology #standards
  14. James Logan @[email protected] ·

    #science #metrology #electronics #retrocomputing What do we think this instrument measures? Maybe an old voltmeter? Spotted at an open-house in #SomervilleMA

    #science #metrology #electronics #retrocomputing #somervillema
  15. James Logan @[email protected] ·

    #science #metrology #electronics #retrocomputing What do we think this instrument measures? Maybe an old voltmeter? Spotted at an open-house in #SomervilleMA

    #science #metrology #electronics #retrocomputing #somervillema
  16. TKSST • seethis.tv 🌈🪐✨ @[email protected] ·

    🧲❓ The gravitational constant “Big G” has been part of #physics since 1687, but after 17 modern measurements, scientists still can’t agree on its exact value.

    At #NIST in #Maryland, physicist Stephan Schlamminger spent a decade trying – even resorting to a sealed-envelope #experiment to avoid subconscious bias. His team’s result slightly disagrees with the accepted value, keeping the #mystery alive.

    👉 space.com/science/one-of-the-g

    #gravity #newton #science #metrology #space #education #stem

    #physics #nist #maryland #experiment #mystery #gravity
  17. TKSST • seethis.tv 🌈🪐✨ @[email protected] ·

    🧲❓ The gravitational constant “Big G” has been part of #physics since 1687, but after 17 modern measurements, scientists still can’t agree on its exact value.

    At #NIST in #Maryland, physicist Stephan Schlamminger spent a decade trying – even resorting to a sealed-envelope #experiment to avoid subconscious bias. His team’s result slightly disagrees with the accepted value, keeping the #mystery alive.

    👉 space.com/science/one-of-the-g

    #gravity #newton #science #metrology #space #education #stem

    #physics #nist #maryland #experiment #mystery #gravity
  18. Sofia Florina @[email protected] ·

    This year's theme emphasises the that accurate, internationally recognised measurements provide the vital, objective scientific evidence that governments need to make informed, transparent, and enforceable public policies.

    #worldmetrologyday #metrology #metreconvention #measurements #measurement #measurementscience #internationalsystemofunits #systèmeinternationaldunités #metricsystem #raiseawareness #raisingawareness #sofiaflorina #ソフィアフロリナ

    #worldmetrologyday #metrology #metreconvention #measurements #measurement #measurementscience
  19. Sofia Florina @[email protected] ·

    Happy World Metrology Day, 20 May, 2026. 2026 Theme: "Metrology: Building Trust in Policy Making". This year, we celebrate the 151st anniversary of the signing of the Metre Convention - a milestone that underscores a century and a half of international collaboration in measurement science.

    #worldmetrologyday #metrology #metreconvention #measurements #measurement #internationalsystemofunits #systèmeinternationaldunités #metricsystem #raiseawareness #raisingawareness #sofiaflorina #ソフィアフロリナ

    #worldmetrologyday #metrology #metreconvention #measurements #measurement #internationalsystemofunits
  20. Chirayu :verified: :twit: @[email protected] ·

    #metrology The Foundation of #Science
    youtube.com/watch?v=c_e1wITe_ig

    #metrology #science
  21. Chirayu :verified: :twit: @[email protected] ·

    #metrology The Foundation of #Science
    youtube.com/watch?v=c_e1wITe_ig

    #metrology #science
  22. ƧƿѦςɛ♏ѦਹѤʞ @[email protected] ·

    @nwarner
    You may also enjoy: youtube.com/watch?v=PWbfVcDcfFw

    🙂
    #units #metrology

    #units #metrology
  23. ƧƿѦςɛ♏ѦਹѤʞ @[email protected] ·

    @futurebird
    Yes we do. And I apologise.
    (Well, sort of.)
    🙂
    #units #measurement #metrology

    #units #measurement #metrology
  24. ƧƿѦςɛ♏ѦਹѤʞ @[email protected] ·

    @AaronDavid @HaraldKi
    youtube.com/watch?v=nROK4cjQVXM
    #temperature #metrology #units

    #temperature #metrology #units
  25. AKK @[email protected] ·

    New instance, new #introduction

    #science #physics
    since 2021 working on
    #fiberlinks #frequency #time #transfer #reference #quantum #metrology
    before that on
    #biophysics #raman #spectroscopy #microscopy #biofilm #bacteria #protein #microplastics

    #programming & #computing
    #python (#fortran #mathematica )
    #linux (not quite but almost still a newbie)
    #freesoftware

    Other interests:
    #plants #cats #sciencefiction #fantasy #reading #writing #audiobooks #asiandramas #unplugbigtech #diday

    #introduction #science #physics #fiberlinks #frequency #time
  26. AKK @[email protected] ·

    New instance, new #introduction

    #science #physics
    since 2021 working on
    #fiberlinks #frequency #time #transfer #reference #quantum #metrology
    before that on
    #biophysics #raman #spectroscopy #microscopy #biofilm #bacteria #protein #microplastics

    #programming & #computing
    #python (#fortran #mathematica )
    #linux (not quite but almost still a newbie)
    #freesoftware

    Other interests:
    #plants #cats #sciencefiction #fantasy #reading #writing #audiobooks #asiandramas #unplugbigtech #diday

    #introduction #science #physics #fiberlinks #frequency #time
  27. 💧🌏 Greg Cocks @[email protected] ·

    ‘On A Whole Other Level’ - Rapid Snow Melt-Off In American West Stuns Scientists
    --
    Experts say brutal March heat has left critical snowpack at record-low levels – and key basins in uncharted territory
    --
    theguardian.com/us-news/2026/a <-- shared media/technical article
    --
    nifc.gov/nicc-files/predictive <-- shared National Significant Wildland Fire Potential @ 04/01/26 (for the next four months)
    --
    [ extreme lack of snowfall already in the ‘25/’26 US West winter to begin with, and now this… ☹ ]
    #GIS #spatial #mapping #remotesensing #weather #metrology #climatechange #extremeweather #snowpack #USWest #USA #winter #heat #melting #snowmelt #risk #hazard #water #hydrology #waterresources #watersecurity #agriculture #wildfire #risk #hazard #firerisk #watersupply #watershed #management #planning #Colorado #Utah #California #earthobservation
    @the Guardian | @nasa | @California Department of Water Resources

    #gis #spatial #mapping #remotesensing #weather #metrology
  28. 💧🌏 Greg Cocks @GregCocks ·

    ‘On A Whole Other Level’ - Rapid Snow Melt-Off In American West Stuns Scientists
    --
    Experts say brutal March heat has left critical snowpack at record-low levels – and key basins in uncharted territory
    --
    theguardian.com/us-news/2026/a <-- shared media/technical article
    --
    nifc.gov/nicc-files/predictive <-- shared National Significant Wildland Fire Potential @ 04/01/26 (for the next four months)
    --
    [ extreme lack of snowfall already in the ‘25/’26 US West winter to begin with, and now this… ☹ ]

    @the Guardian | @nasa | @California Department of Water Resources

    #gis #spatial #mapping #remotesensing #weather #metrology
  29. Scientific Frontline @[email protected] ·

    Metrology is the scientific study of measurement. Its primary goal is to establish a common, globally understood foundation for units of measurement, ensuring that data is accurate, reliable, and consistent across all disciplines.
    #Metrology #sflorg
    sflorg.com/2026/03/cat03072603

    #metrology #sflorg
  30. Scientific Frontline @[email protected] ·

    Metrology is the scientific study of measurement. Its primary goal is to establish a common, globally understood foundation for units of measurement, ensuring that data is accurate, reliable, and consistent across all disciplines.
    #Metrology #sflorg
    sflorg.com/2026/03/cat03072603

    #metrology #sflorg
  31. ƧƿѦςɛ♏ѦਹѤʞ @[email protected] ·

    @batkaren
    Just wait until you find out about Planck units.
    #metrology

    #metrology
  32. 💧🌏 Greg Cocks @[email protected] ·

    Changes In Dominant Streamflow Drivers As Network-Scale Flow Regime Shifts From Intermittent To Ephemeral Across A Multi-Year Drought
    --
    doi.org/10.1002/hyp.70413 <-- shared paper
    --
    #GIS #spatial #mapping #water #hydrology #fluvial #pluvial #precipitation #extremeweather #California #USA #semiarid #watershed #headwaters #weather #metrology #spatialanalysis #spatiotemporal #model #modeling #geostatistics #monitoring #sensors #instrumentation #insitu #drought #streamflow #ephemeral #intermittent #catchments #waterresources #watermanagement #watersecurity #planning
    #coast #coastal #hydrogeomorphic #geology #climate

    #gis #spatial #mapping #water #hydrology #fluvial
  33. 💧🌏 Greg Cocks @GregCocks ·

    Changes In Dominant Streamflow Drivers As Network-Scale Flow Regime Shifts From Intermittent To Ephemeral Across A Multi-Year Drought
    --
    doi.org/10.1002/hyp.70413 <-- shared paper
    --

    #gis #spatial #mapping #water #hydrology #fluvial
  34. 💧🌏 Greg Cocks @[email protected] ·

    From Space To Field - Putting satellite insights into growers’ hands [OpenET]
    --
    irrigationtoday.org/features/f <-- shared technical media article
    --
    etdata.org/ <-- shared OpenET home page
    --
    nasa.gov/image-article/openet- <-- shared NASA technical article
    --
    youtu.be/Rbobf6aurLs?si=Q0kN9e <-- shared OpenET overview video
    --
    #OpenET #openscience #opendata #publicgood #publicservice #nonprofit #fedscience #fedservice #evapotranspiration #ET #Landsat #OLI #OperationalLandImager #groundwater #water #hydrology #spatialanalysis #spatiotemporal #agriculture #USA #farming #waterresources #watermanagement #planning #watersecurity #satellite #remotesensing #earthobservation #model #modeling #irrigation #metrology #raster #cost #economics #efficiency #foodproduction #mobileapp #FARMS #view #download #usecase #reporting
    #OpenET #USGS #USDA @NASA #USGS_EROS

    #openet #openscience #opendata #publicgood #publicservice #nonprofit
  35. 💧🌏 Greg Cocks @GregCocks ·

    From Space To Field - Putting satellite insights into growers’ hands [OpenET]
    --
    irrigationtoday.org/features/f <-- shared technical media article
    --
    etdata.org/ <-- shared OpenET home page
    --
    nasa.gov/image-article/openet- <-- shared NASA technical article
    --
    youtu.be/Rbobf6aurLs?si=Q0kN9e <-- shared OpenET overview video
    --

    @NASA

    #openet #openscience #opendata #publicgood #publicservice #nonprofit
  36. Doktor Overcomma :vepi: @[email protected] ·

    25 kilometers of cake is my new unit of comparative measurement. The article is paywalled, but what you can see shows that I'm not hallucinating this.
    railwaygazette.com/passenger/r
    #cake #metrology

    #cake #metrology
  37. 💧🌏 Greg Cocks @[email protected] ·

    Remote Sensing and GIS Assessment of Drought Dynamics in the Ukrina River Basin, Bosnia and Herzegovina
    --
    doi.org/10.3390/atmos17020124 <-- shared paper
    --
    #GIS #spatial #mapping #drought #risk #hazard #remotesensing #MODIS #satellite #earthobservation #spatialanalysis #spatiotemporal #monitoring #Ukrina #RiverBasin #Bosnia #Herzegovina #BosniaHerzegovina #water #waterresources #socioeconomic #risk #hazard #cost #economics #agriculture #foodsecurity #watersecurity #landcover #vegetation #croplands #fruit #crops #metrology #hydrology #droughtexposure #basins #riverbasins #watersheds #monitoring #mitigation #planning #droughtrisk

    #gis #spatial #mapping #drought #risk #hazard
  38. 💧🌏 Greg Cocks @GregCocks ·

    Remote Sensing and GIS Assessment of Drought Dynamics in the Ukrina River Basin, Bosnia and Herzegovina
    --
    doi.org/10.3390/atmos17020124 <-- shared paper
    --

    #gis #spatial #mapping #drought #risk #hazard
  39. Paul Houle @[email protected] ·

    📏 Superconducting detector captures hot spots with submicron resolution

    phys.org/news/2026-01-supercon

    #sensors #superconductors #physics #science #instruments #metrology

    #sensors #superconductors #physics #science #instruments #metrology
  40. Paul Houle @[email protected] ·

    📏 Superconducting detector captures hot spots with submicron resolution

    phys.org/news/2026-01-supercon

    #sensors #superconductors #physics #science #instruments #metrology

    #sensors #superconductors #physics #science #instruments #metrology
  41. ƧƿѦςɛ♏ѦਹѤʞ @[email protected] ·

    1 deciputin = the manipulation of one foreign politician for a period of ten years

    #AltUnitsOfMeasurements
    #HashTagGames #units #metrology

    #altunitsofmeasurements #hashtaggames #units #metrology
  42. ƧƿѦςɛ♏ѦਹѤʞ @[email protected] ·

    1 microdonny = 1 lumen of facially reflected orange light per cm of palm width for an average human

    #AltUnitsOfMeasurements
    #HashTagGames #units #metrology

    #altunitsofmeasurements #hashtaggames #units #metrology
  43. ƧƿѦςɛ♏ѦਹѤʞ @[email protected] ·

    @shelldozer

    I always quite liked
    attoparsecs per microfortnight
    since it's roughly equivalent to
    inches per second.
    :-)

    #AltUnitsOfMeasurements
    #HashTagGames #units #metrology

    #altunitsofmeasurements #hashtaggames #units #metrology
  44. ƧƿѦςɛ♏ѦਹѤʞ @[email protected] ·

    The milli-Farage = The amount of ugliness required to repel 1 boat.
    cf. the 'milli-Helen'.

    #AltUnitsOfMeasurements #HashTagGames #units #metrology
    @openwarfare

    #altunitsofmeasurements #hashtaggames #units #metrology
  45. Scientific Frontline @[email protected] ·

    Researchers successfully demonstrated #quantum #metrology using spatially separated entangled atomic clouds to measure the gradients of electromagnetic fields.
    #QuantumScience #sflorg
    sflorg.com/2026/01/qs01242601.

    #quantum #metrology #quantumscience #sflorg
  46. Scientific Frontline @[email protected] ·

    Researchers successfully demonstrated #quantum #metrology using spatially separated entangled atomic clouds to measure the gradients of electromagnetic fields.
    #QuantumScience #sflorg
    sflorg.com/2026/01/qs01242601.

    #quantum #metrology #quantumscience #sflorg
  47. ƧƿѦςɛ♏ѦਹѤʞ @[email protected] ·

    @h4ckernews
    It's Mars Climate Orbiter all over again.
    #metrology #units #measurement

    #metrology #units #measurement
  48. 💧🌏 Greg Cocks @GregCocks ·

    Computing Discharge Using the Entropy-Based Probability Concept [#USGS]
    --
    doi.org/10.3133/tm3A26 <-- shared USGS publication
    --
    "... PLAIN LANGUAGE SUMMARY: This report describes the steps and the theory to compute the speed and flow of water in streams using the probability concept…”
    # computation
    @USGS

    #usgs #water #hydrology #monitoring #measurement #calculation
  49. Jorge Saturno @[email protected] ·

    Uncertainty propagation using the Monte Carlo method can be demanding in terms of computational resources.

    A team at PTB has developed an efficient alternative: the systematic sampling propagation and reconstruction convolution (SSPRC).

    Learn more: ptb.de/cms/en/ptb/fachabteilun

    #metrology

    #metrology
  50. Christopher Kyba 🇨🇦🇩🇪🇪🇺 @[email protected] ·

    A colleague of mine is offering a funded PhD position (4 years) in #Metrology of #Skyglow in Switzerland: live.solique.ch/metas/de/inter

    And at the same time I'm offering a PhD on #RemoteSensing using nighttime lights: jobs.ruhr-uni-bochum.de/jobpos

    It's great to see #LightPollution and #Night research being taken seriously by funding agencies!

    #AcademicJobs #PhysicsJobs #GeographyJobs #fedihired #getFedihired

    #metrology #skyglow #remotesensing #lightpollution #night #academicjobs
  51. 💧🌏 Greg Cocks @GregCocks ·

    BURGER - A Bottom-Up Regionalization Approach for Global Sub-Daily Intensity-Duration-Frequency Data
    --
    doi.org/10.1029/2024WR039773 <-- shared paper
    --
    zenodo.org/records/15473689 <-- shared dataset
    --
    "KEY POINTS
    • BURGER is the first global IDF data set derived from observations of sub-daily rainfall
    • Sub-daily rainfall intensities are computed with the Simplified Metastatistical Extreme Value (SMEV) approach for a range of return periods
    • BURGER intensities compare well with expected intensities, indicated by an interquartile range of the percentage bias between −5% and 5%..”
    # statistics

    #gis #spatial #data #mapping #global #exteremeweather