home.social

#comparasion — Public Fediverse posts

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

fetched live
  1. 💧🌏 Greg Cocks @[email protected] ·

    Global Performance of #RemoteSensing Based and Reanalysis-Driven Models to Estimate Open Water Evaporation
    --
    doi.org/10.1029/2025WR042363
    --
    “ABSTRACT: Evaporation plays an essential role in the water cycle, influencing local and regional climates while directly impacting water availability in lakes. However, directly measuring evaporation over water bodies remains challenging due to the high costs of installing and maintaining the required in situ instrumentation. Although several remote sensing algorithms have been providing evaporation estimates, the lack of a global validation hinders our understanding of their relative uncertainties and performances across different regions. Here, [they] analyze[d] the performance of a suite of models that leverage satellite data and meteorological reanalysis to estimate evaporation over lakes worldwide. [They] compare[d] three remote sensing-based models, one reanalysis-driven model and one ensemble approach, using in situ observations from 27 lakes representing a diverse range of geographic and climatic regions. [Their] results demonstrate that, overall, the ensemble outperformed any individual model in terms of accuracy, with a RMSE and a bias of 1.3 and 0.3 mm/day, respectively. These findings highlight the benefits of using an ensemble approach to estimate open water evaporation with satellite-based models at the global scale, leveraging the unique strengths of each model. For the individual models, differences in the representation of heat storage changes and advection effects led to lower values of RMSE and bias, depending on the location and depth of the lakes. This study sets the path for future improvement of open water evaporation algorithms globally, while remote sensing techniques are proven satisfactory to monitoring of water loss in lakes globally, an essential step toward effective large-scale water resources management.
    PLAIN LANGUAGE SUMMARY: Water loss through evaporation in lakes and reservoirs directly affects water availability, which highlights the need to monitor these losses. However, measuring evaporation in situ is challenging and expensive. An alternative is to estimate evaporation using remote-sensing models and compare these estimates with in-situ data to verify their accuracy. Here, [they] evaluated four models and their ensemble (the models' mean value) using measurements from 27 lakes and reservoirs worldwide. [They] found that the ensemble presented higher accuracy and consistency than any individual model because it benefits from the strengths of each model. This approach can guide future improvements in estimating open-water evaporation, which is essential for large-scale water-resource management…”
    #global #mapping #earthobservation #GIS #spatial #spatialanalysis #spatiotemporal #model #modeling #water #hydrology #surfacewater #waterbody #lake #reservoir #evaporation #evapotranspiration #watercycle #weather #meteorology #usecase #waterresources #watermanagement #waterloss #regional #estimate #policy #planning #instrumentation #comparasion

    #remotesensing #global #mapping #earthobservation #gis #spatial
  2. 💧🌏 Greg Cocks @GregCocks ·

    Global Performance of Based and Reanalysis-Driven Models to Estimate Open Water Evaporation
    --
    doi.org/10.1029/2025WR042363
    --
    “ABSTRACT: Evaporation plays an essential role in the water cycle, influencing local and regional climates while directly impacting water availability in lakes. However, directly measuring evaporation over water bodies remains challenging due to the high costs of installing and maintaining the required in situ instrumentation. Although several remote sensing algorithms have been providing evaporation estimates, the lack of a global validation hinders our understanding of their relative uncertainties and performances across different regions. Here, [they] analyze[d] the performance of a suite of models that leverage satellite data and meteorological reanalysis to estimate evaporation over lakes worldwide. [They] compare[d] three remote sensing-based models, one reanalysis-driven model and one ensemble approach, using in situ observations from 27 lakes representing a diverse range of geographic and climatic regions. [Their] results demonstrate that, overall, the ensemble outperformed any individual model in terms of accuracy, with a RMSE and a bias of 1.3 and 0.3 mm/day, respectively. These findings highlight the benefits of using an ensemble approach to estimate open water evaporation with satellite-based models at the global scale, leveraging the unique strengths of each model. For the individual models, differences in the representation of heat storage changes and advection effects led to lower values of RMSE and bias, depending on the location and depth of the lakes. This study sets the path for future improvement of open water evaporation algorithms globally, while remote sensing techniques are proven satisfactory to monitoring of water loss in lakes globally, an essential step toward effective large-scale water resources management.
    PLAIN LANGUAGE SUMMARY: Water loss through evaporation in lakes and reservoirs directly affects water availability, which highlights the need to monitor these losses. However, measuring evaporation in situ is challenging and expensive. An alternative is to estimate evaporation using remote-sensing models and compare these estimates with in-situ data to verify their accuracy. Here, [they] evaluated four models and their ensemble (the models' mean value) using measurements from 27 lakes and reservoirs worldwide. [They] found that the ensemble presented higher accuracy and consistency than any individual model because it benefits from the strengths of each model. This approach can guide future improvements in estimating open-water evaporation, which is essential for large-scale water-resource management…”

    #remotesensing #global #mapping #earthobservation #gis #spatial
  3. 💧🌏 Greg Cocks @[email protected] ·

    The German Magazine Katapult Showed The Scale Of The Russian Occupation Of Ukraine On The Map Of Europe
    --
    koroldanylo.com.ua/en/news/nim <-- shared media post
    --
    [this is not intended as a political post; rather, an indication of why benchmarking spatial and indeed all data is useful - so that maybe people may better understand the scale of occupation based on spatial references they are more familiar with]
    #GIS #spatial #mapping #ukraine #russia #occupation #reference #spatialanalysis #comparasion #WesternAudience #infographic #Katapult #Europe #awareness #war #invasion #scale
    @katapultmagazin

    #gis #spatial #mapping #ukraine #russia #occupation
  4. 💧🌏 Greg Cocks @GregCocks ·

    The German Magazine Katapult Showed The Scale Of The Russian Occupation Of Ukraine On The Map Of Europe
    --
    koroldanylo.com.ua/en/news/nim <-- shared media post
    --
    [this is not intended as a political post; rather, an indication of why benchmarking spatial and indeed all data is useful - so that maybe people may better understand the scale of occupation based on spatial references they are more familiar with]

    @katapultmagazin

    #gis #spatial #mapping #ukraine #russia #occupation
  5. 💧🌏 Greg Cocks @[email protected] ·

    A Multi-Level, Multi-Scale Comparison Of Lidar- And LANDSAT-Based Habitat Selection Models Of Mexican Spotted Owls In A Post-Fire Landscape
    --
    doi.org/10.1016/j.ecoinf.2025. <-- shared paper
    --
    #GIS #spatial #mapping #Habitat #suitability #Megafire #Scaling #Habitatsuitability #selection #model #modeling #framework #Strixoccidentalis #Wildfire #bushfire #remotesening #LIDAR #elevation #ecosystem #LANDSAT #comparasion #mexican #spottedowl #avian #postfire #landscape #vegetation #ecosystem #damage #risk #hazard #earthobservation #scaling #scale #multifactor #homerange #microhabitat #ecology #recovery #spatialanalysis #spatiotemporal #modelperformance #reliability #accuracy #precision #forest #integration #conservation #landscape #fireaffected #spatialdisagreement

    #gis #spatial #mapping #habitat #suitability #megafire
  6. 💧🌏 Greg Cocks @GregCocks ·

    A Multi-Level, Multi-Scale Comparison Of Lidar- And LANDSAT-Based Habitat Selection Models Of Mexican Spotted Owls In A Post-Fire Landscape
    --
    doi.org/10.1016/j.ecoinf.2025. <-- shared paper
    --

    #gis #spatial #mapping #habitat #suitability #megafire
  7. 💧🌏 Greg Cocks @[email protected] ·

    OpenGeoAI - Artificial Intelligence for Geospatial Data
    --
    opengeoai.org/ <-- OpenGeoAI home page
    --
    github.com/opengeos/geoai <-- shared #GitHub #repository
    --
    “[A] powerful new capability is coming to the GeoAI Python package: finding similar features in remote sensing imagery with DINOv3.
    This feature leverages the DINOv3 pre-trained model to find similar features in remote sensing imagery with a single click…”
    #GIS #spatial #mapping #dinov3 #GeoAI #AI #python #library #github #remotesensing #processing #imagery #comparasion #machinelearning #LiDAR #pointcloud #vector #model #modeling #earthobservation #software #opensource #geoai

    #github #repository #gis #spatial #mapping #dinov3
  8. 💧🌏 Greg Cocks @GregCocks ·

    OpenGeoAI - Artificial Intelligence for Geospatial Data
    --
    opengeoai.org/ <-- OpenGeoAI home page
    --
    github.com/opengeos/geoai <-- shared
    --
    “[A] powerful new capability is coming to the GeoAI Python package: finding similar features in remote sensing imagery with DINOv3.
    This feature leverages the DINOv3 pre-trained model to find similar features in remote sensing imagery with a single click…”

    #github #repository #gis #spatial #mapping #dinov3
  9. 💧🌏 Greg Cocks @[email protected] ·

    Integrated Topographic Corrections Improve Forest Mapping Using Landsat Imagery
    --
    doi.org/10.1016/j.jag.2022.102 <-- shared 2022 paper
    --
    “HIGHLIGHTS:
    • [They] evaluated the impacts of topographic correction on forest mapping in the mountains.
    • The enhanced C-correction and the physical model reduced topographic effects.
    • The corrected Landsat imagery time series resulted in higher accuracy.
    • Terrain information improved classification but not as much as topographic correction.
    • [They] recommend using topographic correction for forest cover mapping..."
    #GIS #spatial #AtmosphericCorrection #IlluminationCondition #LandCover #ModelComparison #TimeSeries #TopographicCorrection #remotesensing #comparasion #topographic #correction #NDVI #forest #vegetation #model #modeling #spatialanalyis #accuracy #forestcover #Russia #Georgia #CaucasusMountains #spatiotemporal #landsat #elevation #DEM

    #gis #spatial #atmosphericcorrection #illuminationcondition #landcover #modelcomparison
  10. 💧🌏 Greg Cocks @GregCocks ·

    Integrated Topographic Corrections Improve Forest Mapping Using Landsat Imagery
    --
    doi.org/10.1016/j.jag.2022.102 <-- shared 2022 paper
    --
    “HIGHLIGHTS:
    • [They] evaluated the impacts of topographic correction on forest mapping in the mountains.
    • The enhanced C-correction and the physical model reduced topographic effects.
    • The corrected Landsat imagery time series resulted in higher accuracy.
    • Terrain information improved classification but not as much as topographic correction.
    • [They] recommend using topographic correction for forest cover mapping..."

    #gis #spatial #atmosphericcorrection #illuminationcondition #landcover #modelcomparison
  11. 💧🌏 Greg Cocks @[email protected] ·

    Performance And Accuracy Of Cross-Section Tracking Methods For Hydromorphological Habitat Assessment In Wadable Rivers With Sparse Canopy Conditions
    --
    doi.org/10.1002/rra.4252 <-- shared research article
    --
    #GIS #spatial #mapping #water #hydrology #streams #depth #bathymetry #RTK #GNSS #GPS #CPGPS #hydromorphological #hydromorphology #riverrestoration #monitoring #research #corrleation #metrics #turbidity #wadeable #canopy #vegetation #watermanagement #survey #efficient #lowcost #robust #methodology #comparasion #interpolation #SarineRiver #Fribourg #Switzerland #biodiversity #habitat #ecosystem #waterdepth #manual #treecanopy #tree #streamgaging #streamgauging #remotesensing #stream #topobathy

    #gis #spatial #mapping #water #hydrology #streams
  12. 💧🌏 Greg Cocks @GregCocks ·

    Performance And Accuracy Of Cross-Section Tracking Methods For Hydromorphological Habitat Assessment In Wadable Rivers With Sparse Canopy Conditions
    --
    doi.org/10.1002/rra.4252 <-- shared research article
    --

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

    How Many Rhode Islands, The ‘Standard’ US Spatial Size Metric?
    --
    xkcd.com/1257/ <-- link to XKCD cartoon
    --
    “It was finally destroyed with a nuclear weapon carrying the destructive energy of the Hiroshima bomb…”
    #GIS #spatial #mapping #mappymeme #RhodeIsland #comparasion #humour #humor #XKCD
    @xkcd

    #gis #spatial #mapping #mappymeme #rhodeisland #comparasion
  14. 💧🌏 Greg Cocks @GregCocks ·

    How Many Rhode Islands, The ‘Standard’ US Spatial Size Metric?
    --
    xkcd.com/1257/ <-- link to XKCD cartoon
    --
    “It was finally destroyed with a nuclear weapon carrying the destructive energy of the Hiroshima bomb…”

    @xkcd

    #gis #spatial #mapping #mappymeme #rhodeisland #comparasion
  15. 💧🌏 Greg Cocks @[email protected] ·

    How [They] Found A New Home Online At Mastodon, After Giving Up On Twitter
    --
    newscientist.com/article/mg258 <-- shared article
    --
    “More like a village than a city, Mastodon has less cruelty and bad-faith debates than Twitter, in my experience Could it be a social media platform to trust?
    IT HAS been nearly six months since Twitter’s transformation from iconic social media platform into the eccentric personal project of tech billionaire Elon Musk. [The author] abandoned [their] account last November, save for work announcements – [they] didn’t want to stick around and watch the place fall apart. Still, [they] craved a digital hangout where [they] could connect with friends and colleagues, test out [their] half-baked ideas and look at cute pictures of capybaras…”
    #socialmedia #Twitter #change #Mastodon #difference #home #community #badfaith #trust #monitoring #comparasion #anecdotal

    #socialmedia #twitter #change #mastodon #difference #home
  16. 💧🌏 Greg Cocks @GregCocks ·

    How [They] Found A New Home Online At Mastodon, After Giving Up On Twitter
    --
    newscientist.com/article/mg258 <-- shared article
    --
    “More like a village than a city, Mastodon has less cruelty and bad-faith debates than Twitter, in my experience Could it be a social media platform to trust?
    IT HAS been nearly six months since Twitter’s transformation from iconic social media platform into the eccentric personal project of tech billionaire Elon Musk. [The author] abandoned [their] account last November, save for work announcements – [they] didn’t want to stick around and watch the place fall apart. Still, [they] craved a digital hangout where [they] could connect with friends and colleagues, test out [their] half-baked ideas and look at cute pictures of capybaras…”

    #socialmedia #twitter #change #mastodon #difference #home